CN211492847U

CN211492847U - Nozzle device and three-dimensional forming equipment

Info

Publication number: CN211492847U
Application number: CN201921778104.XU
Authority: CN
Inventors: 彭方园
Original assignee: Zhuhai Sailner 3D Technology Co Ltd
Current assignee: Zhuhai Sailner 3D Technology Co Ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-09-15
Anticipated expiration: 2029-10-22

Abstract

The application discloses a spray head device and three-dimensional forming equipment, the spray head device comprises a spray head, an ink supply mechanism and a cleaning mechanism, the spray head is provided with an ink inlet, an ink outlet, a spray hole and an ink jet channel, the ink inlet and the ink outlet are respectively arranged at two ends of the ink jet channel, the ink inlet and the ink outlet are respectively communicated with the ink jet channel, the spray hole is arranged at the bottom wall of the ink jet channel, and the spray hole is communicated with the ink jet channel; the ink supply mechanism is connected with the ink inlet; the cleaning mechanism is connected with the ink outlet; this application is when wasing the shower nozzle, can make the liquid that supplies in the ink mechanism pass through in proper order advance the china ink mouth the inkjet passageway reaches go out the china ink mouth and get into in the wiper mechanism, perhaps, make the liquid that supplies in the ink mechanism pass through in proper order advance the china ink mouth the inkjet passageway reaches the orifice flows to make the inside deposit of shower nozzle from going out china ink mouth or orifice discharge, and then realized carrying out thorough washing to the shower nozzle, improved printing apparatus's printing effect.

Description

Nozzle device and three-dimensional forming equipment

Technical Field

The application relates to the technical field of three-dimensional forming equipment, in particular to a spray head device and three-dimensional forming equipment with the spray head device.

Background

In the inkjet printing technology, if the printing device is in an idle state for a long time, ink in the nozzle is in a static state, and if the ink in the nozzle is left for too long, additives such as color paste or titanium pigment in the ink are precipitated. When the print job is performed again, the ink discharge state of the head may become poor, resulting in a decrease in printing accuracy.

In the prior art, before printing is started, ink is forced out of a jet hole by increasing the pressure in an ink supply cavity of the jet head so as to dredge the jet hole, thereby realizing cleaning of the print jet head. However, this cleaning method merely unclogs the nozzle hole, and deposits at other positions in the head cannot be completely discharged due to the low fluidity of ink, and still affects the printing effect in the subsequent printing.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems of the prior art, the present application has a primary object to provide a nozzle device capable of completely cleaning a nozzle.

In order to achieve the above purpose, the following technical solutions are specifically adopted in the present application:

the application provides a shower nozzle device, this shower nozzle device includes:

the ink jet device comprises a nozzle, a liquid crystal panel and a liquid crystal panel, wherein the nozzle is provided with an ink inlet, an ink outlet, a jet orifice and at least one ink jet channel, the ink inlet and the ink outlet are respectively arranged at two ends of the ink jet channel, the ink inlet and the ink outlet are respectively communicated with the ink jet channel, and the jet orifice is arranged at the bottom wall of the ink jet channel and communicated with the ink jet channel;

the ink supply mechanism is connected with the ink inlet;

the cleaning mechanism is connected with the ink outlet;

when the nozzle is cleaned, liquid in the ink supply mechanism sequentially enters the cleaning mechanism through the ink inlet, the ink jet channel and the ink outlet.

Preferably, the cleaning mechanism comprises an ink storage box and a valve, an ink storage cavity is arranged in the ink storage box, and the ink storage cavity is connected with the ink outlet through the valve.

Preferably, the wiper mechanism still includes the row's ink pump, the lower part of holding ink chamber is provided with row's ink mouth, the inlet end of arranging the ink pump with arrange the ink mouth and be connected.

Preferably, the cleaning mechanism further comprises a waste ink tank, and the liquid outlet end of the ink discharge pump is connected with the waste ink tank; or the liquid outlet end of the ink discharge pump is connected with the ink supply mechanism.

Preferably, the plurality of ink jet channels are provided, two ends of each ink jet channel are respectively provided with one ink inlet and one ink outlet, and each ink outlet is connected with the ink storage cavity through one valve, or the ink outlets of the ink jet channels for jetting the same kind of materials are connected with the ink storage cavity through the same valve.

Preferably, a plurality of ink storage cavities are arranged in the ink storage box, and ink outlets of the ink jetting channels for jetting the same kind of materials are connected with the same ink storage cavity.

Preferably, the cross-sectional area of the ink storage chamber is gradually reduced from top to bottom in the vertical direction.

Preferably, the cleaning mechanism further comprises an atmospheric valve, and the atmospheric valve is connected with the ink storage cavity.

Preferably, the ink supply mechanism comprises an ink supply box and a pressure adjusting assembly, an ink supply cavity is arranged in the ink supply box, the ink supply cavity is connected with the ink inlet, and the pressure adjusting assembly is used for adjusting the pressure in the ink supply cavity.

Correspondingly, the application also provides three-dimensional forming equipment which comprises an equipment body and the spray head device, wherein the spray head device is arranged on the equipment body.

Compared with the prior art, the spray head device comprises a spray head, an ink supply mechanism and a cleaning mechanism, wherein the spray head is provided with an ink inlet, an ink outlet, a spray hole and at least one ink jet channel, the ink inlet and the ink outlet are respectively arranged at two ends of the ink jet channel, the ink inlet and the ink outlet are respectively communicated with the ink jet channel, and the spray hole is arranged at the bottom wall of the ink jet channel and is communicated with the ink jet channel; the ink supply mechanism is connected with the ink inlet, and the cleaning mechanism is connected with the ink outlet; when the spray head is cleaned, liquid in the ink supply mechanism sequentially passes through the ink inlet, the ink jet channel and the ink outlet to enter the cleaning mechanism, so that sediment in the spray head is discharged from the ink outlet, the sediment in the spray head is thoroughly cleaned, and the forming effect of the three-dimensional forming equipment is improved.

Drawings

Fig. 1 is a structural view of a head device according to an embodiment of the present application.

Fig. 2 is a structural view of a head device at another angle according to an embodiment of the present application.

Fig. 3 is a structural view of a head apparatus according to another embodiment of the present application.

Fig. 4 is a structural view of a head apparatus according to another embodiment of the present application.

Fig. 5 is a structural view of a head apparatus according to another embodiment of the present application.

Fig. 6 is a structural view of a head apparatus according to another embodiment of the present application.

Fig. 7 is a structural view of a three-dimensional molding apparatus according to an embodiment of the present application.

The attached drawings are as follows:

1. a spray head; 11. an ink ejection channel; 12. an ink inlet; 13. an ink outlet; 2. an ink supply mechanism; 21. an ink supply cartridge; 211. an ink supply chamber; 22. a pressure adjustment assembly; 3. a cleaning mechanism; 31. a valve; 32. an ink storage box; 321. an ink storage chamber; 33. an ink discharge pump; 34. an atmospheric valve; 35. a waste ink tank; 36. a multi-pass tube; 4. a leveling mechanism; 5. a curing device; 6. a printing platform.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application 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 present application and are not intended to limit the present application.

In the description of the present application, unless explicitly stated or limited otherwise, 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; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present application, it should be understood that the terms "upper" and "lower" used in the description of the embodiments of the present application are used in a descriptive sense only and not for purposes of limitation. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

Referring to fig. 1 and 2, an embodiment of the present application discloses a head apparatus including a head 1, an ink supply mechanism 2, and a cleaning mechanism 3. The head 1 has an ink ejection channel 11, an ink inlet 12, an ink outlet 13, and a nozzle hole, the ink inlet 12 and the ink outlet 13 are respectively disposed at both ends of the ink ejection channel 11, and the ink inlet 12 and the ink outlet 13 are respectively communicated with the ink ejection channel 11, the nozzle hole is disposed at a bottom wall of the ink ejection channel 11, and the nozzle hole is communicated with the ink ejection channel 11. The ink supply mechanism 2 is connected with the ink inlet 12, and the cleaning mechanism 3 is connected with the ink outlet 13. When the spray head 1 is cleaned, liquid in the ink supply mechanism 2 flows into the ink jet channel 11 from the ink inlet 12, and then the liquid in the ink jet channel 11 enters the cleaning mechanism 3 from the ink outlet 13, so that sediment in the spray head 1 is discharged from the ink outlet 13, and further the sediment in the spray head 1 is thoroughly cleaned, and the printing effect of the printing equipment is improved.

In the present embodiment, the purge mechanism 3 includes a valve 31 and an ink tank 32, and an ink chamber 321 for storing ink is provided in the ink tank 32. When assembled, the valve 31 is disposed above the ink reservoir 32, and the ink outlet 13 is connected to the ink reservoir 321 through the valve 31. In the present embodiment, the valve 31 is disposed to control the opening or closing of the conduit between the ink outlet 13 and the ink storage cavity 321, and the valve 31 is disposed above the ink storage box 32 to facilitate the ink discharged into the valve 31 to flow into the ink storage cavity 321.

In this embodiment, the purge mechanism 3 may further include an ink discharge pump 33, an ink discharge port is disposed at a position near the bottom of the side wall of the ink storage cavity 321, and an inlet end of the ink discharge pump 33 is connected to the ink discharge port of the ink storage cavity 321. In this embodiment, the ink discharge port is provided at a position on the side wall of the ink storage cavity 321 near the bottom, so that the ink in the ink storage cavity 321 can be discharged by the ink discharge pump 33 conveniently. Simultaneously, through the inlet end with arrange the ink pump 33 with arrange the china ink mouth and connect, can realize the washing to a plurality of ink jet channel 11 through a row's ink pump 33 when shower nozzle 1 has a plurality of ink jet channel 11, and need not to set up a corresponding row's ink pump to each ink jet channel 11, be favorable to simplifying wiper mechanism 3.

In the present embodiment, an inclined surface may be disposed in the ink storage cavity 321, so that the cross-sectional area of the ink storage cavity 321 gradually decreases from top to bottom in a vertical direction, i.e., a vertical direction in the Z direction in fig. 1. In the embodiment, the cross-sectional area of the ink storage cavity 321 is set to be gradually smaller from top to bottom, so that when the ink pump 33 pumps the ink in the ink storage cavity 321, the liquid level of the ink in the ink storage cavity 321 drops faster, the liquid level of the ink in the ink storage cavity 321 is prevented from contacting the valve 31, and the ink in the ink storage cavity 321 is prevented from flowing back into the head 1.

In this embodiment, the purge mechanism 3 may further include a waste ink tank 35, and the liquid outlet of the ink discharge pump 33 is detachably connected to the waste ink tank 35. This embodiment is through being provided with waste ink tank 35 to can hold the ink liquid that row's ink pump 33 was taken out from holding chamber 321 through waste ink tank 35, can dismantle with waste ink tank 35 through the liquid outlet with row's ink pump 33 and link to each other, conveniently change and clear up waste ink tank 35.

In this embodiment, the purge mechanism 3 may further include an air valve 34, and the air valve 34 is disposed on a side wall of the ink storage cavity 321 near an upper portion, so that the ink storage cavity 321 can communicate with the atmosphere through the air valve 34. In the present embodiment, by providing the air valve 34, the ink in the ink storage chamber 321 can be drawn out without sucking the ink in the head 1.

In this embodiment, in order to realize the automation of the cleaning of the head 1, the cleaning mechanism 3 may further include a controller, and the controller is connected to the ink discharge pump 33, the valve 31 and the atmosphere valve 34, and further controls the opening or closing of the ink discharge pump 33, the valve 31 and the atmosphere valve 34 through the controller.

Specifically, the atmospheric valve 34 is an electromagnetic valve, the valve 31 is a check valve, and the opening or closing of the check valve is controlled by controlling the pressure difference between the two ends of the check valve through the controller, so that the automatic cleaning operation of the spray head 1 can be realized without connecting the check valve with the controller, which is beneficial to simplifying the line connection of the spray head device. Further, controlling the pressure differential across the check valve comprises: the ink discharge pump 33 starts to pump the ink storage cavity 321 to reduce the air pressure in the ink storage cavity 321, so that the pressure difference between the end of the one-way valve connected with the nozzle head 1 and the end connected with the ink storage cavity 321 is greater than the opening pressure of the one-way valve, and at this time, the ink of the nozzle head 1 can flow into the ink storage cavity 321 through the one-way valve. After the ink discharge pump 33 stops operating, the pressure difference across the check valve gradually decreases until the pressure difference is smaller than the opening pressure of the check valve, and the check valve closes to cut off the flow path of ink from the ink outlet 13 of the head 1 to the ink storage cavity 321. It is understood that in other embodiments, the air valve 34 may be another type of valve, and the valve 31 may be any type of valve, such as a solenoid valve, which is connected to the controller when the valve 31 is selected as the solenoid valve, and the controller controls the opening or closing of the solenoid valve to implement the automatic cleaning operation of the spray head.

The ink supply mechanism 2 includes an ink supply cartridge 21 and a pressure adjustment member 22, an ink supply chamber 211 is provided in the ink supply cartridge 21, and the ink supply chamber 211 is used to store ink. When assembling, the ink supply cartridge 21 is disposed above the head 1, the ink supply chamber 211 is connected to the ink inlet 12, and the ink in the ink supply chamber 211 can flow into the head 1 by the action of gravity. The pressure regulating member 22 is connected to the ink supply chamber 211, and the pressure in the ink supply chamber 211 can be regulated by the pressure regulating member 22. In the embodiment, the pressure in the ink supply cavity 211 is adjusted by the pressure adjusting component 22, so that negative pressure is formed in the ink supply cavity 211 to keep ink in the spray head 1, and the ink in the spray head 1 is prevented from dropping from the spray holes due to the action of gravity in the normal printing process; the pressure adjusting component 22 can also adjust the pressure in the ink supply cavity 211 to form positive pressure in the ink supply cavity 211, so that ink in the nozzle 1 can be sprayed out from the nozzle holes at a high speed to dredge the nozzle holes, the cleaning effect of the nozzle 1 is further improved, and the printing equipment obtains a better printing effect.

In the present embodiment, the ink supply mechanism 2 further includes an ink cartridge and an ink supply pump, which are disposed away from the head 1, and the ink cartridge is connected to the ink supply chamber 211 by the ink supply pump, so that the ink in the ink cartridge can be quickly supplied into the ink supply chamber 211 by the ink supply pump.

In the present embodiment, the pressure adjustment assembly 22 of the ink supply mechanism 2 may also be connected to a controller, so that the operation of the pressure adjustment assembly 22 is controlled by the controller to form negative pressure or positive pressure in the ink supply chamber 211.

Specifically, in the present embodiment, the ink discharge pump 33 is arranged to suck the ink storage cavity 321 to reduce the air pressure in the ink storage cavity 321, so that a pressure difference exists between two ends of the valve 31, and further, the ink in the ink supply cavity 211 can flow into the ink storage cavity 321 through the ink ejection channel 11 and the valve 31, and the ink in the ink storage cavity 321 can be discharged in the process of sucking the ink storage cavity 321 to reduce the air pressure in the ink storage cavity 321, so as to ensure that the purging mechanism 3 can work normally. It is understood that, in other embodiments, the ink discharging pump may not be provided, but an air pump may be provided to pump the ink storage cavity 321 by the air pump to form a negative pressure, so that a pressure difference is formed between two ends of the valve 31, and the ink in the ink supply cavity 211 can flow into the ink storage cavity 321 through the ink ejecting channel 11 and the valve 31. Alternatively, the ink discharging pump 33 and the air pump are not required to be provided, and the pressure in the ink supply cavity 211 is adjusted by the pressure adjusting assembly 22 of the ink supply mechanism 2, so that the ink supply cavity 211 forms a positive pressure, and further, a pressure difference is provided at two ends of the valve 31, so that the ink in the ink supply cavity 211 can flow into the ink storage cavity 321 through the ink ejecting channel 11 and the valve 31. However, when an air pump is provided or the pressure difference across the valve 31 is obtained by the pressure adjustment assembly 22, an ink discharge mechanism may need to be additionally provided to discharge the ink in the ink reservoir 211, which may complicate the structure of the apparatus.

In the present embodiment, only 1 inkjet head 1 is provided, four inkjet channels 11 are provided on the inkjet head 1, an ink inlet 12 and an ink outlet 13 are respectively provided at two ends of each inkjet channel 11, and each inkjet channel 11 can eject the same kind of material and/or different kinds of materials. The number of the valves 31 is equal to the number of the ink outlets 13, and only one ink storage chamber 321 is provided in the ink storage box 32. When connected, each ink outlet 13 is separately connected to the ink storage cavity 321 through a valve 31. It is understood that in other embodiments, the number of the heads is not limited to 1, and may be multiple, and the number of the ink jet channels 11 on each head 1 is not limited to 4, such as may be less than 4 or more than 4, and in addition, the present embodiment also does not limit the relative position relationship between different ink jet channels 11 on the head 1 and the relative position relationship between multiple heads 1, and may be specifically selected and set according to actual requirements.

During specific cleaning, the cleaning operation of the spray head 1 includes a first cleaning operation and a second cleaning operation, the first cleaning operation and the second cleaning operation may be performed separately and continuously or simultaneously, or may be performed selectively, and how to set the first cleaning operation and the second cleaning operation may be set according to the requirements of a user, which is not limited herein. In addition, the execution time of the first cleaning work and the second cleaning work can be set according to the requirement. For example, the controller may control the operation time of the ink discharge pump 33 and the pressure adjustment assembly 22 to control the execution time of the first cleaning operation and the second cleaning operation, and may further control the operation power of the ink discharge pump 33 and the pressure formed by the pressure adjustment assembly 22 in the ink supply chamber 211 by the controller to realize cleaning with different degrees of force, and how to select the execution time and the cleaning degree may be set according to the requirements of the user, for example, according to the cleaning interval, the detection result, or the type of the material used.

Specifically, the following description will be given by taking as an example that the first cleaning work and the second cleaning work are performed separately and continuously:

the first cleaning work includes: the controller controls the pressure adjustment assembly 22 to operate, so that a stable negative pressure state is maintained in the ink supply cavity 211, the ink discharge pump 33 is started to suck the ink storage cavity 321, and the atmospheric valve 34 is closed, at this time, the suction of the ink discharge pump 33 will cause the air pressure in the ink storage cavity 321 to decrease until the pressure difference between the end where the valve 31 is connected with the ink outlet 13 and the end where the valve 31 is connected with the ink storage cavity 321 is greater than the opening pressure of the valve 31, so that the valve 31 is opened, and the ink in the nozzle 1 will flow into the ink storage cavity 321 through the ink outlet 13 and the valve 31, that is, the ink flows from the ink inlet 12 to the ink outlet 13 through the action of the ink discharge pump 33, thereby realizing the cleaning operation of the interior of the nozzle 1.

The second cleaning work includes: the controller controls the pressure adjusting assembly 22 to work, so that positive pressure is formed in the ink supply cavity 211, at this time, the ink discharging pump 33 does not work, ink in the spray head 1 is sprayed out from the spray holes in the ink spraying channel 11 at a high speed, and dredging and cleaning work of the spray holes of the spray head 1 is realized.

During the operation of the second purging operation, since a positive pressure is formed in the ink supply chamber 211, that is, the pressure at the end of the valve 31 connected to the ink outlet 13 becomes large, it may cause the pressure difference across the valve 31 to be larger than the opening pressure thereof when the pressure in the ink storage chamber 321 is unchanged. This makes it possible that the valve 31 is opened during the second purging operation, so that the ink in the head 1 flows into the ink reservoir 321 through the valve 31, and at this time, the ink accumulates in the ink reservoir 321 because the ink discharge pump 33 is not operated. However, in order to reduce the volume of the head device, the space of the ink reservoir 321 is generally small, which causes the ink reservoir 321 to fill up quickly, causing the liquid level of the ink in the ink reservoir 321 to contact the valve 31. When the second cleaning operation is completed, the ink in the ink storage chamber 321 may flow back into the head 1 through the valve 31 during the pressure change process when the head 1 returns to the printing state, thereby causing contamination of the head.

In order to prevent the head 1 from being contaminated, in the embodiment, the air valve 34 is disposed on the sidewall of the ink storage cavity 321, and in the process of performing the second purging operation or after the second purging operation is completed, the air valve 34 is opened to communicate the ink storage cavity 321 with the atmosphere, and then the ink discharge pump 33 is opened to suck the ink storage cavity 321, so that the air pressure in the ink storage cavity 321 is not reduced, and the ink in the head 1 is not sucked, thereby reducing the ink loss of the head 1 in the purging process, avoiding the ink backflow caused by the excessively high ink level in the ink storage cavity 321, and preventing the head 1 from being contaminated.

In the following, the first cleaning operation and the second cleaning operation are performed simultaneously as an example:

specifically, the controller controls the pressure adjustment assembly 22 to operate, so that positive pressure is formed in the ink supply cavity 211, and the ink in the nozzle 1 is ejected from the nozzle holes in the ink ejection channel 11 at a high speed, and a first cleaning operation is performed; meanwhile, the controller controls the ink discharge pump 33 to open to suck the ink storage cavity 321, and the atmospheric valve 34 is closed, so that the ink flows from the ink inlet 12 to the ink outlet 13, and a second cleaning operation is performed;

in general, since the discharge speed of the ink in the first purging operation is much greater than that in the second purging operation, in order to reduce the waste of the material while achieving the cleaning effect, the duration of the first purging operation is shorter than the duration of the second purging operation, and specifically, the duration of the first purging operation may be generally set to 100ms "1 s, the first purging operation may be a continuous operation during the duration or may be an intermittent operation for a plurality of times during the duration, and the duration of the second purging operation may be generally set to 2 s" 5s, that is, the simultaneous execution of the first purging operation and the second purging operation may be a specific time period during which one of the purging operations is executed.

Based on the above embodiment, the present application further discloses another specific embodiment, which is different from the above embodiment in that in the present embodiment, the cleaning mechanism 3 further includes a multi-way pipe 36, and the number of the valves 31 is the same as the number of the types of the materials sprayed by the spray head 1. Specifically, when the four ink ejection channels 11 of the head 1 eject the same material, the ink outlets 13 of the 4 ink ejection channels 11 of the head 1 are respectively connected to the inlets of the multi-channel tube 36, and the outlet of the multi-channel tube 36 is connected to the ink storage cavity 321 through the valve 31, as shown in fig. 3. When 2 of the 4 ink jet channels 11 on the head 1 eject the same kind of material, and the other 2 ink jet channels 11 eject different kinds of material, the ink outlets 13 of the 2 ink jet channels 11 ejecting different kinds of material are connected to different valves 31, and the ink outlets 13 of the 2 ink jet channels 11 ejecting the same kind of material are connected to the same valve 31 through a multi-way tube 36, as shown in fig. 4. In the present embodiment, the ink outlets 13 of the ink jet channels 11 for jetting different types of materials are connected to different valves 31, so that the different types of materials are prevented from being mixed in the pipeline and flowing back to the head 1, and further the possibility of contamination of the head 1 is prevented, and meanwhile, the ink outlets 13 of the ink jet channels 11 for jetting the same type of materials are connected to the same valve 31, so that the number of the valves 31 is reduced, and the cost and the volume of the head device are reduced.

Based on the above embodiments, the present application further discloses another specific embodiment, which is different from the above embodiments in that in the present embodiment, the ink storage cavity 321 is connected to the ink supply mechanism 2 through the ink discharge pump 33, for example, the ink storage cavity 321 is connected to the ink supply cartridge 21 and/or the ink tank through the ink discharge pump 33, so as to recycle the ink discharged from the head 1, and avoid waste of the material discharged from the ink outlet 13 of the head 1, as shown in fig. 5 and 6. Specifically, the ink tank 32 may include a plurality of independent ink tanks 321, each ink tank 321 being used to contain the same kind of material, or each ink tank 321 being used to contain the material discharged from the same ink ejection channel 11, so that the material stored in the ink tank 321 is not mixed with other kinds of materials, so that the material in the ink tank 321 can be recycled. Accordingly, each ink storage cavity 321 needs to be provided with an ink discharge pump 33, so that materials in different ink storage cavities 321 can be pumped out for recycling, and waste of materials in the cleaning process is avoided.

Correspondingly, the embodiment of the present application further discloses a three-dimensional forming device, please refer to fig. 7, which includes the nozzle device of the above embodiment, and the nozzle device includes the nozzle 1, the ink supplying mechanism 2 and the cleaning mechanism 3.

The three-dimensional forming equipment further comprises a leveling mechanism 4 and a curing device 5, wherein the leveling mechanism 4 comprises a leveling roller, a scraping blade and a waste ink groove. Wherein, shower nozzle 1 is used for spouting printing material to print platform 6, and levelling mechanism 4 is used for leveling the material layer that shower nozzle 1 jetted in order to guarantee the precision of material layer in the direction of height. Specifically, the leveling roller is used for scraping off excessive materials on the material layer, and two ends of the scraping blade are respectively contacted with the outer surface of the leveling roller and the waste ink groove, so that the materials attached to the outer surface of the leveling roller are scraped off, and the materials scraped off from the surface of the leveling roller flow into the waste ink groove along the surface of the scraping blade. In general, in order to avoid frequently disassembling and assembling the leveling mechanism 4 to clean the waste ink tank, a waste ink discharging mechanism is arranged on the waste ink tank of the leveling mechanism 4, and is used for timely cleaning the waste ink in the waste ink tank to avoid the problem that the waste ink overflows to pollute a machine, and the leveling mechanism 4 does not need to be frequently disassembled and assembled; in the present embodiment, the waste ink tank may also be used to serve as the waste ink tank 35 for containing ink discharged from the head 1 in the cleaning mechanism 3 in the head device, which is advantageous for simplifying the structure of the three-dimensional printing system. The curing device 5 is used for radiation curing of the material sprayed by the spray head 1, and specifically, the curing device 5 may be an ultraviolet curing device.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A spray head apparatus, comprising:

the ink supply mechanism is connected with the ink inlet;

the cleaning mechanism is connected with the ink outlet;

2. The ejection head device of claim 1, wherein the purge mechanism comprises an ink reservoir having an ink reservoir disposed therein and a valve connected to the ink outlet via the valve.

3. The head device as claimed in claim 2, wherein said purge mechanism further comprises an ink discharge pump, an ink discharge port is provided at a lower portion of said ink storage chamber, and an inlet end of said ink discharge pump is connected to said ink discharge port.

4. The head apparatus according to claim 3, wherein the purge mechanism further comprises a waste ink tank, and the liquid outlet end of the ink discharge pump is connected to the waste ink tank; or the liquid outlet end of the ink discharge pump is connected with the ink supply mechanism.

5. The head device as claimed in claim 2, wherein the ink ejecting channels are provided in plurality, each of the ink ejecting channels has an ink inlet and an ink outlet at its two ends, and each of the ink outlets is connected to the ink storing chamber through one of the valves, or the ink outlets of the ink ejecting channels for ejecting the same kind of material are connected to the ink storing chamber through the same one of the valves.

6. The head device as claimed in claim 5, wherein a plurality of ink storing chambers are provided in said ink storing box, and the ink outlets of said ink ejecting passages ejecting the same kind of material are connected to the same ink storing chamber.

7. The ejection head device according to claim 2, wherein the cross-sectional area of the ink reservoir is gradually smaller from top to bottom in a vertical direction.

8. The spray head device of claim 3, wherein the purge mechanism further comprises an atmospheric valve connected to the ink reservoir.

9. The nozzle device of claim 1, wherein the ink supply mechanism comprises an ink supply box and a pressure adjustment assembly, an ink supply cavity is arranged in the ink supply box, the ink supply cavity is connected with the ink inlet, and the pressure adjustment assembly is used for adjusting the pressure in the ink supply cavity.

10. A three-dimensional molding apparatus comprising an apparatus body and the head device according to any one of claims 1 to 9, the head device being mounted to the apparatus body.