CN102941738A

CN102941738A - Printing head

Info

Publication number: CN102941738A
Application number: CN2012104988213A
Authority: CN
Inventors: 苏健强
Original assignee: Print Rite Unicorn Image Products Co Ltd
Current assignee: Zhuhai Tianwei Additives Co ltd
Priority date: 2012-11-28
Filing date: 2012-11-28
Publication date: 2013-02-27
Anticipated expiration: 2032-11-28
Also published as: CN102941738B

Abstract

The invention discloses a printing head. The printing head comprises at least two material storage cavities used for storing printing materials in different colors, a material blending cavity selectively communicated with the at least two material storage cavities, a nozzle communicated with the material blending cavity and used for spraying printing materials, a cleaning cavity adjacent to the material blending cavity and communicated with the material storage cavity, and a switch assembly capable of switching on/off the communication between the material blending cavity and the cleaning cavity. In a printing process of a printing device, one or several materials in different colors can be blended in the material blending cavity of the printing head according to different proportions as required, so that products in rich colors are printed and personalized printing requirements can be well met.

Description

Printhead

Technical field

The present invention relates to a kind of printhead, the printhead in especially a kind of three-dimensional printing equipment.

Background technology

The PRN device that generally uses at present all carries out for various planes material surface, and such as paper, leather, plastics, glass, metal etc., this PRN device has been widely used in office and domestic use.Common printing type, motion (or printhead actual motion is done to carry by relative printhead in the surface that is printed on the one hand entity, it is static to be printed the surface), simultaneously printhead along be printed entity relative to carrying the motion vertical scanning direction to move, and print.These PRN devices all are to be applied to the plane print, and namely two dimension is printed.

For the surface coloring of 3 D stereo article, generally adopt the mode of craft or semi-hand, such as the mode of utilizing hot transfer printing, perhaps directly by hand colouring.But the production efficiency of these modes is very low, therefore carries out the demand of three-dimensional printing for the 3 D stereo article, and is very urgent in recent years.Three-dimensional printing equipment at first needs to possess rational frame for movement, guarantees that printhead can reach the optional position of 3 D stereo article surface, thereby sprays colouring work; Secondly rational control system must be arranged, the motion control that guarantees whole equipment with print control synchronously, accurately carry out; Rational 3 D stereo color computer Computer Aided Design and secondary process system also must be arranged simultaneously, guarantee to provide the essential movement locus planning of print job and synchronously color parsing; Also need at last to have accurately correcting mechanism, with repeatability and the uniformity of finishing multicolor spraying.

China's publication No. is that a kind of stereoscopic device has been announced in the application for a patent for invention of CN102173211A, this equipment is used for realizing the inkjet printing function of the three-dimensional solid object surface of Arbitrary 3 D, mainly comprise control system, mechanical movement structure and print system, wherein: control system is take the five-axle linkage motion control as the basis, realize synchronously motion control and print control, realize simultaneously 3 D stereo color computer Computer Aided Design and secondary process function, also realized the planning of five-axle linkage movement locus and synchronous color analytical capabilities that three-dimensional printing is essential; The mechanical movement structure adopts a kind of five-axle linkage frame for movement, has realized three rectilinear motions and two linkage functions that rotatablely move; Print system adopts four inkjet printing head part with independent telescope function to realize black, red, yellow, blue four look inkjet printing functions.But, four independently ink jet-print head only can realize deceiving, the printing of red, yellow, Lan Si kind color, if the client needs more abundant color effect, this printhead can't be realized.

Therefore, provide a kind of novel printhead real in necessary.

Summary of the invention

The purpose of this invention is to provide a kind of printhead that can realize that multicolour is printed.

For achieving the above object, the invention provides a kind of printhead, comprise at least two storage cavitys, described storage cavity accommodates the printed material of different colours; The batching chamber, described batching chamber and described selectable connection of at least two storage cavitys; Nozzle, described nozzle is communicated with the jet printing material with the batching chamber; Cleaning chambers, described cleaning chambers be in abutting connection with described batching chamber, and be communicated with described batching chamber; Being communicated with between batching chamber and the cleaning chambers can be opened/be blocked to switch module, described switch module.

Printhead of the present invention has following beneficial effect: PRN device is in print procedure, can be as required, one or more colors are wherein mixed in the batching chamber of printhead by different proportion, thereby print the more abundant product of color, printing demand that therefore more can be satisfying personalized.

Printhead of the present invention further comprises waste chamber, and described waste chamber adjacency also is communicated with described batching chamber, and being communicated with between waste chamber and the batching chamber can be opened/be blocked to described switch module.Waste chamber can be used for reclaiming prints rear remaining printed material, with recycling, thereby saves cost.

In the printhead of the present invention, switch module comprises rotatable the first plate, the adjacent sidewalls of described the first plate and waste chamber, and described the first plate is provided with through hole; The second plate slidably; Mandrel, the first end of described mandrel is fixed in the center of described the first plate, and described the second sleeve-board is located on the mandrel; Spring, described spring are arranged between the first plate and the second plate.When printhead was worked, will the prepare burden chamber sealing of the first plate and the second plate prevented that printed material from leaking; When print head cleaning, the first plate makes the batching chamber be communicated with waste chamber, and the second plate makes the batching chamber be communicated with cleaning chambers, thereby realizes the purpose of cleaning.

In the printhead of the present invention, spring is rotatable to be arranged between the first plate and the second plate.Printhead is in print procedure, and spring is subjected to the driving of PRN device and rotates, thereby realizes stirring the purpose of printed material.

Description of drawings

Fig. 1 is the three-dimensional view that adopts the three-dimensional printing equipment of printhead of the present invention.

Fig. 2 is the three-dimensional view of printhead of the present invention.

Fig. 3 is the top view of printhead of the present invention.

Fig. 4 is the partial sectional view of printhead of the present invention, and this moment, printhead was in print state.

Fig. 5 is the partial sectional view of printhead of the present invention, and this moment, printhead was in the cleaning state.

The specific embodiment

The present invention is further described below in conjunction with drawings and Examples.

Referring to Fig. 1, three-dimensional printing equipment 1 comprises base plate 11 and the molding seat 12 that is arranged on the base plate.Be extended with straight up 4 screw rods 13 from base plate 11, framework 14 is set on the screw rod 13, and can do straight-line feed along the Z direction along screw rod 13.Further be provided with guide rod 15 on the framework 14, guide rod 15 can be done straight-line feed along Y-direction on framework 14.Printhead 16 is set on the guide rod 15, and can do straight-line feed along directions X.By the control of three-dimensional printing equipment 1, printhead 16 all can be realized feeding on X, Y, the last direction of Z, and then realizes the three-dimensional printing of expection.

Referring to Fig. 2 and Fig. 3, printhead 16 has four storage cavitys (161,162,163,164), accommodates respectively printed material black, red, yellow, Lan Si kind color in the storage cavity (41,42,43,44).Printhead further is provided with a cleaning fluid cavity volume 165, accommodates cleaning fluid in the cleaning fluid cavity volume 165, and the concrete effect of cleaning fluid cavity volume 165 is follow-up will to be further described.

Referring to Fig. 4, printhead 16 comprises that further batching chamber 166, the cleaning chambers 167 adjacent with these batching chamber 166 1 ends reach the waste chamber 168 adjacent with batching chamber 166 opposite sides, and the sidewall bottom of waste chamber 168 is provided with through hole 200.Storage cavity (161,162,163,164) and between the batching chamber 166 be provided with communicating passage (invisible among the figure), be provided with valve module (invisible among the figure) on the communicating passage, this valve module is by PRN device 1 control opened/closed, thereby realize storage cavity (161,162,163,164) with the batching chamber 166 between selectable the connection.The downstream in batching chamber 166 is provided with nozzle 169, and nozzle 169 is by playing PRN device 1 control, with the jet printing material.Batching is provided with switch module in the chamber, and this switch module comprises rotatable the first plate 21, the adjacent sidewalls of described the first plate 21 and

waste chamber

168, and 21 are provided with through hole 211 on described the first plate.Switch module comprises that further the first end of the second plate 22, mandrel 23 and spring 24. described mandrels 23 slidably is fixed in the center of described the first plate 21, and described the second plate 22 is set on the mandrel 21.Described spring 24 is arranged between the first plate 21 and the second plate 22, and spring 24 can receive the driving signal of PRN device 1 and rotate.

During work, the through hole 211 on the first plate 21 is in the state that staggers with the through hole of waste chamber 168 sidewalls, and the second plate 22 is subject to the elastic force of spring 24 and the sidewall of cleaning chambers 167 fits tightly.Batching chamber 166 is processed the state that disconnects with waste chamber 168, batching chamber 166 with cleaning chambers 167.After PRN device 1 sends print command, open one or more storage cavity (161,162,163,164) and be communicated with batching chamber 166, printed material is entered in the batching chamber 166.PRN device 1 simultaneously driving spring 24 rotates to stir printed material.In the process that stirs, PRN device 1 further applies high temperature to batching chamber 166, makes printed material liquefaction.After the printed material in the batching chamber 166 reached the standard of injection, PRN device 1 further Control Nozzle 169 formed printout with the printed material ejection behind the printed material cooling curing that ejects.

Referring to Fig. 5, after print job was finished, after the first plate 21 was subjected to PRN device 1 to drive rotation, through hole 211 was in side by side state with the through hole 200 of waste chamber 168 sidewalls.Cleaning fluid in the cleaning fluid cavity volume 165 is pressed in the cleaning chambers 167.The second plate 22 is slided to the first plate 21 along mandrel 23 by the pressure of cleaning fluid.In the second plate 22 sliding processes, batching chamber 166 interior remaining printed materials enter in the waste chamber 168.Simultaneously, in the second plate 22 sliding processes, cleaning fluid flows into batching chamber 166 and cleans the printed material that remains in the batching chamber 166, and the liquid after the cleaning is also discharged via nozzle 169.When batching after chamber 166 cleans up, 21 rotations of the first plate are to position shown in Figure 4, disconnect between batching chamber 166 and the waste chamber 168 being communicated with.The second plate 22 is subjected to the screen resilience effect of spring 24 to slide into position shown in Figure 4, disconnects between batching chamber 166 and the cleaning chambers 167 being communicated with.New printed material flows in the batching chamber 166 again, and repeats aforementioned activities, until finally finishing of printing.Printed material in the waste chamber 168 can be transmitted back to storage cavity (161,162,163,164) by recovery holes 300 and again print, thereby reduces cost, protection of the environment.

Printhead of the present invention not only can print black, the product of four kinds of colors of red, yellow, and green, can also be as required, the control PRN device mixes two kinds or more of colors wherein according to a specific ratio in batching chamber 166, thereby prints the product of various colors.

Claims

1. printhead comprises:

At least two storage cavitys, described storage cavity accommodates the printed material of different colours;

The batching chamber, described batching chamber and described selectable connection of at least two storage cavitys;

Nozzle, described nozzle is communicated with the jet printing material with the batching chamber;

Cleaning chambers, described cleaning chambers be in abutting connection with described batching chamber, and be communicated with described batching chamber;

Being communicated with between batching chamber and the cleaning chambers can be opened/be blocked to switch module, described switch module.

2. printhead according to claim 1 is characterized in that: also comprise waste chamber, described waste chamber is in abutting connection with also being communicated with described batching chamber, and described switch module can be opened/block waste chamber and prepare burden being communicated with between the chamber.

3. printhead according to claim 2, it is characterized in that: described switch module comprises:

Rotatable the first plate, the adjacent sidewalls of described the first plate and waste chamber, described the first plate is provided with through hole;

The second plate slidably;

Mandrel, the first end of described mandrel is fixed in the center of described the first plate, and described the second sleeve-board is located on the mandrel;

Spring, described spring are arranged between the first plate and the second plate.

4. printhead according to claim 3, it is characterized in that: described spring is rotatable to be arranged between the first plate and the second plate.

5. arbitrary described printhead according to claim 1-4, it is characterized in that: also comprise the cleaning fluid cavity volume, described cleaning fluid cavity volume is communicated with described cleaning chambers is selectable.