CN218080413U

CN218080413U - Device for washing and maintaining spray head of binder-jet 3D printer

Info

Publication number: CN218080413U
Application number: CN202221584622.XU
Authority: CN
Inventors: 蔡道生; 魏青松
Original assignee: Wuhan Easymade Technology Co ltd
Current assignee: Wuhan Easymade Technology Co ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2022-12-20
Anticipated expiration: 2032-06-23

Abstract

The utility model discloses a binder-jetting 3D printer nozzle flushing maintenance device, which comprises a water pump, a water inlet pipeline, a water outlet pipeline, a flushing ink channel branch, a flushing orifice branch, a spray-washing pipeline and a pressure gauge; the air pump, the air inlet pipeline, the air outlet pipeline, the small air volume residue discharge branch and the large air volume air drying branch, and the pressure regulating valve and the normally closed solenoid valve on each branch, and the PLC. The washing unit body can provide cleaning fluid and clean air, cooperation for the shower nozzle wash the ink channel branch road wash the orifice branch road the incomplete branch road is arranged to little amount of wind with the setting of pressure regulating valve and normally closed solenoid valve on the big amount of wind air-dries the branch road can form multiple washing combination mode, carries out corresponding washing mode selection according to the actual demand, can let the residue in the shower nozzle clean as far as possible in addition to air-dry, eliminate the material basis that probably causes the orifice to block up completely, the shower nozzle can be used or is deposited for a long time at ease.

Description

Device for washing and maintaining spray head of binder-jet 3D printer

Technical Field

The utility model relates to 3D printer technical field, concretely relates to binder sprays 3D print head and washes and maintain device.

Background

The adhesive-jetting 3D printer easily plugs the nozzle hole after the ink becomes viscous or dries because the ink used is a relatively high-viscosity adhesive. Maintaining the nozzle to ensure smooth nozzle holes is the basis for normal operation of the 3D printer. A small number of spray holes in the spray head are blocked, so that large defects can be generated on printed parts, and the printed parts can not be formed or can be easily cracked or even broken along defect lines generated by the defective spray holes even if the printed parts are formed.

One of the existing cleaning methods is: the method is characterized in that clean liquid is injected into the spray head by the injector and is extruded from the spray holes, the pressure generated in the spray head can be different from person to person, the glue is usually removed on the surface of the spray holes due to overlarge pressure, and the spray head is scrapped after the glue is removed.

In addition, a plurality of pipelines are arranged to be matched with pressure control for cleaning, and multiple cleaning functions are achieved, but the pipelines which are connected to the spray head for more than three times are needed for completing a plurality of functions, and the pipelines which are connected with the next function after one function are replaced.

Disclosure of Invention

The utility model aims at the problem that prior art exists, a binder sprays 3D print head and washes maintenance device is provided.

In order to achieve the purpose, the utility model adopts the technical proposal that:

binder sprays 3D print head washes and maintains device, including the washing unit body, the washing unit body includes: the washing device comprises a water pump, a washing nozzle branch and a washing nozzle branch, wherein the water pump is connected with a water inlet pipeline and a water outlet pipeline, the water outlet pipeline is provided with the washing ink channel branch and the washing nozzle branch which are arranged in parallel, and the end parts of the washing ink channel branch and the washing nozzle branch are converged to a spraying washing pipeline;

the air pump is connected with an air inlet pipeline and an air outlet pipeline, the air outlet pipeline is provided with a small air volume residue discharging branch and a large air volume air drying branch which are arranged in parallel, and the end parts of the small air volume residue discharging branch and the large air volume air drying branch are also converged to the spray washing pipeline;

the flushing ink channel branch, the flushing spray hole branch, the small air volume residue discharge branch and the large air volume air drying branch are respectively provided with a pressure regulating valve and a normally closed solenoid valve, and the spraying pipeline is provided with a pressure gauge;

the air pump is connected with the air pump through the normally closed electromagnetic valve, and the normally closed electromagnetic valve is connected with the PLC through the air pump.

This binder sprays 3D print head and washes maintenance device simple structure, and easy to use and regulation can wash and maintain the shower nozzle of 3D printer through multiple mode, and the sanitization does not have the residue, has still reduced manual intervention simultaneously, has reduced the possibility of making mistakes in the operator's busy, has alleviateed operator working strength, has improved work efficiency.

The washing unit body utilizes water pump place pipeline and air pump place pipeline, can provide cleaning fluid and clean air for the shower nozzle, the cooperation wash the ink channel branch road wash the orifice branch road the incomplete branch road is arranged to little amount of wind with the setting of pressure regulating valve and normally closed solenoid valve on the big amount of wind air-dries the branch road, just can form very many kinds and wash the combination mode, can carry out corresponding washing mode selection according to the actual demand, the abluent situation of needs that most of 3D printer shower nozzles of adaptation probably meet, and can guarantee that the sanitization is quick, can let the residual in the shower nozzle (including ink channel and orifice) clean as far as possible, and air-dry, eliminate the material basis that probably causes the orifice to block up completely, later the shower nozzle just can be used or deposited with ease, also can deposit for a long time.

The PLC is set and matched with a simple running program, so that the control of the water pump, the air pump and the normally closed electromagnetic valve can be realized, the aim of automatic cleaning is fulfilled, and the cleaning effect required by a user can be met.

The flushing device body can be an open type pipeline system, and can also be a structure with an external packaging entity in a shell, a box body, a bracket or the box body, and the like, pipelines of different types and different positions can be fixed through pipe clamps, and parts such as a water pump, an air pump and the like can be fixed through bolts and screws.

Furthermore, the water inlet pipeline is connected with an external purified water bucket and can supply water to the system, and the air inlet pipeline is communicated to the outside and pumps external air into the system; the spray rinsing pipeline is connected to an ink channel of the 3D printer nozzle.

Further, still include return line, 3D print head's ink way is connected to return line's one end, the other end is connected to the waste water dish, be equipped with the fifth normally closed solenoid valve on the return line.

Further, the fifth normally-closed electromagnetic valve is electrically connected with the PLC; the waste water tray is connected with the waste water barrel through a pipeline.

The arrangement of the backflow pipeline can collect the cleaned wastewater in a centralized manner, so that the wastewater can be conveniently treated in a centralized manner, pollution is avoided, and the fifth normally-closed electromagnetic valve is also controlled by the PLC.

Ultrapure water with the temperature of 40-50 ℃ is arranged in the water purifying barrel, and ink inlet columns are respectively arranged at two ends of the ink channel.

The ink inlet columns at two ends are respectively connected with the spray washing pipeline and the return pipeline to form a structure with one inlet and one outlet.

Further, still be equipped with a plurality of function button on the washing unit body, it is a plurality of the function button includes "automatic complete set washes" button, "cancellation" button, "washs fast" button, "circulation washing" button and "air-dries" button at least, and is a plurality of the function button all with the PLC controller electricity is connected. Through the selection of different function buttons, the system can perform corresponding cleaning work.

Further, the pressure of the cleaning liquid entering the 3D printer nozzle through the spray cleaning pipeline is not more than 30KPa, and the pressure of the cleaning air is not more than 90KPa. Avoid the too big damage to the orifice that causes of pressure.

Further, the pressure regulating valve is arranged at the upstream of the normally closed electromagnetic valve, and the pressure regulating valve can be a manual valve or an electric valve.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the binder-spraying 3D printer nozzle washing and maintaining device is simple in structure and easy to use and adjust, can clean and maintain the nozzle of the 3D printer in multiple modes, is clean and free of residues, reduces manual intervention, reduces the possibility of mistakes in busy work of operators, reduces the working strength of the operators and improves the working efficiency; 2. the flushing device body can provide cleaning liquid and clean air for the spray heads, and a plurality of cleaning combined modes can be formed by matching the arrangement of the pressure regulating valve and the normally closed solenoid valve on each branch, so that the flushing device can be adapted to the situations which can be met by most 3D printer spray heads and need to be cleaned, has cleaning and air drying functions, completely eliminates the material foundation which can cause spray hole blockage, and can be used safely or stored for a long time after being cleaned; 3. the PLC is set and matched with a simple operation program, so that the control of the water pump, the air pump and the normally closed electromagnetic valve can be realized, the aim of automatic cleaning is fulfilled, and the cleaning effect required by a user can be met.

Drawings

Fig. 1 is a schematic overall layout of the binder-jetting 3D printer head washing and maintaining device of the present invention;

in the figure: 1. a flushing device body; 2. a water pump; 201. a water inlet pipe; 202. a water outlet pipeline; 3. flushing the ink channel branch; 4. flushing the spray hole branch; 5. spraying and washing the pipeline; 6. an air pump; 601. an air inlet pipeline; 602. an air outlet pipeline; 7. a small air quantity residue discharge branch; 8. a large air volume air drying branch; 9. a first pressure regulating valve; 10. a second pressure regulating valve; 11. a third pressure regulating valve; 12. a fourth pressure regulating valve; 13. a first normally closed solenoid valve; 14. a second normally closed solenoid valve; 15. a third normally closed solenoid valve; 16. a fourth normally closed solenoid valve; 17. a pressure gauge; 18. a PLC controller; 19. a function button; 20. an ink channel; 21. spraying a hole; 22. an ink inlet column; 23. a return line; 24. a fifth normally closed electromagnetic valve; 25. a wastewater pan; 26. and (4) a purified water bucket.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, a binder sprays 3D print head and washes maintenance device, includes washing device body 1, washing device body 1 includes: the washing device comprises a water pump 2, wherein the water pump 2 is connected with a water inlet pipeline 201 and a water outlet pipeline 202, the water outlet pipeline 202 is provided with a washing ink channel branch 3 and a washing spray hole branch 4 which are arranged in parallel, and the end parts of the washing ink channel branch 3 and the washing spray hole branch 4 are converged to a spray washing pipeline 5;

the air pump 6 is connected with an air inlet pipeline 601 and an air outlet pipeline 602, the air outlet pipeline 602 is provided with a small air volume residue discharging branch 7 and a large air volume air drying branch 8 which are arranged in parallel, and the end parts of the small air volume residue discharging branch 7 and the large air volume air drying branch 8 are also converged to the spray washing pipeline 5;

the flushing ink channel branch 3, the flushing spray hole branch 4, the small air volume residue discharge branch 7 and the large air volume air drying branch 8 are respectively provided with a pressure regulating valve (a first pressure regulating valve 9, a second pressure regulating valve 10, a third pressure regulating valve 11 and a fourth pressure regulating valve 12) and a normally closed solenoid valve (a first normally closed solenoid valve 13, a second normally closed solenoid valve 14, a third normally closed solenoid valve 15 and a fourth normally closed solenoid valve 16), and the spray washing pipeline 5 is provided with a pressure gauge 17;

the air pump is characterized by further comprising a PLC (programmable logic controller) 18, and the water pump 2, the air pump 6 and the normally closed electromagnetic valve are electrically connected with the PLC 18 respectively.

This binder sprays 3D print head and washes maintenance device simple structure, and easy to use and regulation can wash and maintain the shower nozzle of 3D printer through multiple mode, and the sanitization does not have the residue, has still reduced manual intervention simultaneously, has reduced the possibility that the operator makeed mistakes in busy, has alleviateed operator working strength, has improved work efficiency.

Washing unit body 1 utilizes water pump place pipeline and air pump place pipeline, can provide cleaning fluid and clean air for the shower nozzle, the cooperation wash the ink channel branch road 3, wash orifice branch road 4 the incomplete branch road 7 is arranged to little amount of wind and big amount of wind air-dries the setting of pressure regulating valve and normally closed solenoid valve on the branch road 8, just can form very many kinds and wash the combination mode, can carry out corresponding washing mode selection according to the actual demand, needs abluent situation that can most of 3D printer nozzle of adaptation probably meet, and can guarantee that the sanitization is quick, can let the residue in the shower nozzle (including ink channel and orifice) clean as far as possible, and air-dry, eliminate the material basis that probably causes the orifice to block up completely, later the shower nozzle just can be used or deposited with ease, also can deposit for a long time.

The PLC 18 is set and matched with a simple operation program, so that the control of the water pump 2, the air pump 6 and the normally closed electromagnetic valve can be realized, the aim of automatic cleaning is fulfilled, and the cleaning effect required by a user can be met.

Further, the water inlet pipe 201 is connected with an external purified water bucket 26 and can supply water to the system, and the air inlet pipe 601 is communicated to the outside and pumps external air into the system; the spray rinsing pipe 5 is connected to an ink channel 20 of a 3D printer head.

Further, the device also comprises a return pipeline 23, one end of the return pipeline 23 is connected with the ink channel 20 of the 3D printer nozzle, the other end of the return pipeline 23 is connected to a waste water tray 25, and a fifth normally-closed electromagnetic valve 24 is arranged on the return pipeline 23.

Further, the fifth normally closed electromagnetic valve 24 is electrically connected with the PLC controller 18; the wastewater tray 25 is connected with a wastewater barrel through a pipeline.

The arrangement of the backflow pipeline 23 can collect the cleaned wastewater in a centralized manner, so that the wastewater can be conveniently treated in a centralized manner, pollution is avoided, and the fifth normally-closed electromagnetic valve 24 is also controlled by the PLC.

Ultrapure water with an angle of about 45 degrees is arranged in the pure water barrel 26, and the two ends of the ink channel 20 are respectively provided with an ink inlet column 22.

The ink inlet columns 22 at two ends are respectively connected with the spray rinsing pipeline 5 and the return pipeline 23 to form a structure of one inlet and one outlet.

Further, be equipped with a plurality of function button 19, a plurality of through control panel on the washing unit body 1 function button 19 includes "automatic complete set washes" button, "cancel" button, "washs" button fast, "circulation washing" button and "air-dries" button at least, and is a plurality of function button 19 all with PLC controller 18 electricity is connected. Through the selection of different function buttons, the system can perform corresponding cleaning work.

Further, the pressure of the cleaning liquid entering the 3D printer nozzle through the spray cleaning pipeline 5 is not more than 30KPa, and the pressure of the cleaning air is not more than 90KPa. Avoid the too big damage to the orifice that causes of pressure.

The working principle of the flushing maintenance device is as follows:

(1) The ink-jet head can be washed without being detached from the 3D printer; the spray rinsing pipe 5 and the return pipe 23 of the flushing device are respectively connected to the ink inlet columns 22 at the two ends of the spray head.

(2) The control panel of the flushing device is provided with five functional buttons which are respectively 'automatic full flushing', 'cancel', 'quick cleaning', 'circular cleaning' and 'air drying'.

The automatic complete flushing executes the complete cleaning process of one spray head, starting from the step of discharging residual ink in the ink channel to the step of completely cleaning the spray head and then drying in the air; "Cancel" is the termination of any function that is being performed; the 'quick cleaning' is a quick version of an 'automatic complete set cleaning' function, each functional step is only executed for a short time, such as one minute, and the method is suitable for occasions needing only quick cleaning; "circulation cleaning" is suitable for clean but slightly blocked nozzles, and the nozzles can be circularly washed by using a suitable cleaning solution; the air drying can be matched with the rapid cleaning or the circular cleaning, and the cleaned spray head is dried in air.

(3) The corresponding trigger signals can be provided for the PLC in the device by pressing the inching switches on the control panel, which respectively correspond to the five function buttons, and the PLC executes the corresponding functions.

The work flow of the automatic complete flushing is as follows:

00. preparation work

Approximately 5L of ultrapure water was prepared and heated to about 45 degrees for use. The inlet pipe 201 (suction pipe) of the flushing device is inserted into ultrapure water. A waste water tray 25 is placed under the spray head and a drain pipe of the waste water tray 25 is connected to a waste water tub.

01. Ink channel

The water pump 2 is started, the first normally closed electromagnetic valve 13 is started, the fifth normally closed electromagnetic valve 24 is started, the first pressure regulating valve 9 is manually and slowly opened until the pressure gauge shows that the gauge pressure is less than or equal to 30KPa, the opening degree of the first pressure regulating valve 9 is locked after the regulation, the opening degree of the first pressure regulating valve does not need to be regulated again for the same sprayer, other pressure regulating valves which are described later also need to be regulated once to be locked, and the same sprayer does not need to be regulated again. The clean water flow will flow through the ink channel 20 in the nozzle to flush the residual ink in the ink channel 20, and stop after 2 minutes.

02. Punching hole

And (3) starting the water pump 2, starting the second normally closed electromagnetic valve 14, and manually and slowly opening the opening of the pressure second pressure regulating valve 10 until the display gauge pressure of the pressure gauge is less than or equal to 30KPa, and then locking. The water flow enters the spray head and flows out of the spray hole 21 and falls into a waste water tray 25 below the spray head, and the residual ink in the spray hole 21 is flushed out, and the process is stopped after 2 minutes.

03. Ink washing channel

The water pump 2 is started, the first normally closed solenoid valve 13 is opened, the fifth normally closed solenoid valve 24 is opened, and the flushing is performed for 5 minutes to clean the possible residual ink in the ink channel 20.

04. Washing spray hole

The water pump 2 is turned on, the second normally closed solenoid valve 14 is turned on, and flushing is performed for 10 minutes to clean the possible residual ink in the nozzle hole 21.

05. Air drying

And (3) starting the air pump 6, starting the third normally closed electromagnetic valve 15, and manually and slowly opening the opening degree of the third pressure regulating valve 11 until the gauge pressure displayed by the pressure gauge is less than or equal to 30KPa, and then locking. The air flow enters the head and discharges residual water in the ink channel 20 and the head 21 through the spray holes, and stops after 1 minute.

And (3) starting the air pump 6, the third normally closed electromagnetic valve 15 and the fifth normally closed electromagnetic valve 24, enabling air flow to enter the spray head, discharging residual water in the ink channel 20, and stopping after 30 seconds.

And (3) starting the air pump 6, starting the third normally closed electromagnetic valve 15, enabling air flow to enter the spray head, discharging possible residual water in the spray head through the spray holes again, and stopping after 30 seconds.

And (3) starting the air pump 6, starting the fourth normally closed electromagnetic valve 16, manually and slowly adjusting the fourth pressure adjusting valve 12D until the pressure gauge display gauge pressure is less than or equal to 90KPa, locking, and enabling the air flow to flow out of the spray hole. And opening the fifth normally closed electromagnetic valve 24 after 30 seconds, enabling the air flow to flow through the ink channel 20 to drain out possible residual water in the ink channel 20, closing the fifth normally closed electromagnetic valve 24 after 1 minute, enabling the air flow to flow out of the spray hole 21, operating for 10 minutes, and completely drying the spray hole 21. So far, the whole set of cleaning process is finished.

The "quick wash" performs five steps of all the flow of the "full auto wash", but each step is performed for only 1 minute.

When in circulating cleaning, the water suction pipe of the water pump is inserted into the waste water tray below the spray head, and only the step of cleaning the spray holes of the full set of automatic cleaning is operated, wherein the waste water tray can be ultrapure water or specific cleaning liquid so as to achieve better cleaning effect.

"air drying" only performs the step of "full auto clean" 05 air drying.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Binder sprays 3D print head and washes and maintain device, including the washing unit body, its characterized in that, the washing unit body includes:

the washing device comprises a water pump, a washing nozzle branch and a washing nozzle branch, wherein the water pump is connected with a water inlet pipeline and a water outlet pipeline, the water outlet pipeline is provided with the washing ink channel branch and the washing nozzle branch which are arranged in parallel, and the end parts of the washing ink channel branch and the washing nozzle branch are converged to a spraying washing pipeline;

the air pump is connected with an air inlet pipeline and an air outlet pipeline, the air outlet pipeline is provided with a small air volume residue discharge branch and a large air volume air drying branch which are arranged in parallel, and the end parts of the small air volume residue discharge branch and the large air volume air drying branch are also converged to the spray washing pipeline;

the flushing ink channel branch, the flushing spray hole branch, the small air volume residue discharge branch and the large air volume air drying branch are respectively provided with a pressure regulating valve and a normally closed solenoid valve, and the spray washing pipeline is provided with a pressure gauge;

the air pump is connected with the air pump through the air pump, and the normally closed electromagnetic valve is connected with the PLC through the air pump.

2. The binder-spraying 3D printer head flushing maintenance device of claim 1, wherein the water inlet pipe is connected to an external clean water tank, and the air inlet pipe is connected to the outside; the spray rinsing pipeline is connected to the ink channel of the 3D printer nozzle.

3. The flushing and maintaining device for the 3D printer nozzle for jetting the bonding agent according to claim 1, further comprising a return pipe, wherein one end of the return pipe is connected with an ink channel of the 3D printer nozzle, the other end of the return pipe is connected with a waste water tray, and a fifth normally-closed electromagnetic valve is arranged on the return pipe.

4. The adhesive-jetting 3D printer head flushing maintenance device of claim 3, wherein the fifth normally-closed solenoid valve is electrically connected to the PLC controller; the waste water tray is connected with the waste water barrel through a pipeline.

5. The adhesive spraying 3D printer nozzle washing and maintaining device as claimed in claim 1, wherein a plurality of function buttons are further arranged on the washing device body, the function buttons at least comprise an automatic complete set washing button, a cancel button, a quick washing button, a circulating washing button and an air drying button, and the function buttons are all electrically connected with the PLC.

6. The adhesive jetting 3D printer head flushing maintenance device of claim 1, wherein a pressure of the cleaning liquid entering the 3D printer head through the spray cleaning pipe is not greater than 30KPa, and a pressure of the cleaning air is not greater than 90KPa.

7. An adhesive jetting 3D printer head flushing maintenance device according to claim 1, characterized in that the pressure regulating valve is arranged upstream of the normally closed solenoid valve.

8. The 3D printer nozzle flushing and maintaining device for adhesive spraying according to claim 2, wherein ultrapure water of 40-50 degrees is arranged in the clear water barrel, and ink inlet columns are respectively arranged at two ends of the ink channel.