Printing head with movement protection device and printing equipment
阅读说明：本技术 带移动保护装置的打印头及打印设备 (Printing head with movement protection device and printing equipment ) 是由 蒙南华 梁政权 周志军 刘轶 于 2019-11-30 设计创作，主要内容包括：一种带移动保护装置的打印头及打印设备,包括外壳、喷墨装置、保护装置；喷墨装置和保护装置并排设置在外壳中,所述外壳设置一个下开口,所述喷墨装置伸出所述外壳下开口进行打印工作,所述喷墨装置缩入所述外壳中与所述保护装置接触。将喷孔保护装置和喷墨装置集成在一起,且相互工作、互不影响,在打印头完成喷墨动作后,打印头迅速缩回至保护装置,保护装置可有效解决目前喷头喷孔堵塞问题,及时保护打印头,从而大幅提高设备打印头的寿命以及设备打印的精度,并且可以对设备工作的连续性提供比较大的保障。(A print head with a mobile protection device and a printing device comprise a shell, an ink jet device and a protection device; the ink jet device and the protection device are arranged in the shell side by side, the shell is provided with a lower opening, the ink jet device extends out of the lower opening of the shell to perform printing work, and the ink jet device retracts into the shell to be contacted with the protection device. The nozzle hole protection device and the ink jet device are integrated together, the nozzle hole protection device and the ink jet device work mutually and do not influence each other, after the ink jet action is finished by the printing head, the printing head is quickly retracted to the protection device, the protection device can effectively solve the problem that the nozzle hole of the existing spray head is blocked, the printing head is protected in time, the service life of the printing head of the equipment is greatly prolonged, the printing precision of the equipment is greatly improved, and great guarantee can be provided for the working continuity of the equipment.)
1. A printer head with a mobile protection device is characterized in that: comprises a shell, an ink jet device and a protection device; the ink jet device and the protection device are arranged in the shell side by side, the shell is provided with a lower opening, the ink jet device extends out of the lower opening of the shell to perform printing work, and the ink jet device retracts into the shell to be contacted with the protection device.
2. A printhead with motion protection according to claim 1, wherein: the lower opening of the shell is matched with the ink jet device, the ink jet device extends out of the ink jet port, and the lowest horizontal plane of the ink jet device when extending out is higher than the lowest horizontal plane of the lower opening.
3. A printhead with motion protection according to claim 1, wherein: the bottom surface of the shell comprises an inclined surface and a horizontal surface, the inclined surface is arranged on two sides of the horizontal surface, the horizontal surface is located on the plane where the lowest point of the inclined surface is located, and the lower opening of the shell is arranged on the horizontal surface.
4. A printhead with motion protection according to claim 1, wherein: the shell is closed, the inner wall of the lower opening of the shell is provided with a circle of sealing ring, the sealing ring is in sealing contact with the ink jet device, and the shell further comprises a closing plate which is used for closing or opening the lower opening of the shell.
5. A printhead with motion protection according to claim 1, wherein: the driving device is used for driving the ink-jet device to move to the protection device, so that the ink-jet device is in contact with the protection device; or the driving device drives the protection device to move to the ink jet device, so that the protection device is in contact with the ink jet device.
6. A printhead with motion protection according to claim 5, wherein: the driving device comprises a protection device driving assembly and an ink jet device driving assembly, the protection device driving assembly comprises a driving piece and a guide piece, the protection device is connected with the guide piece, and the driving piece drives the guide piece to drive the protection device to move in the horizontal direction; the ink jet device driving assembly comprises a driving portion and a moving portion, the driving portion is connected with the moving portion, the moving portion is connected with the ink jet device, and the driving portion drives the moving portion to drive the ink jet device to move in the vertical direction.
7. A printhead with motion protection according to claim 6, wherein: the ink jet device driving assembly further comprises a guide post and a sliding block, the guide post is arranged on the bottom surface of the shell and matched with the sliding block, the sliding block slides along the guide post, and the sliding block is connected with the ink jet device.
8. A printhead with motion protection according to claim 5, wherein: the driving device comprises an ink jet device driving piece, the ink jet device driving piece comprises an installation rack, a vertical driving block and a horizontal driving block, the vertical driving block is connected with the ink jet device and drives the ink jet device to move in the vertical direction, the vertical driving block is arranged on the installation rack, the horizontal driving block is connected with the installation rack and drives the installation rack to move in the horizontal direction.
9. A printhead with motion protection according to claim 8, wherein: the ink jet device drive assembly further comprises a guide block and a sliding block, the guide block is vertically arranged on the mounting rack, the sliding block is matched with the guide block, the sliding block slides along the guide block, and the sliding block is connected with the ink jet device.
10. A printhead with motion protection according to any one of claims 1 to 9, wherein: the protection device comprises an accommodating groove, a moisturizing strip and a wiping strip, wherein the moisturizing strip is arranged in the accommodating groove, the wiping strip is arranged on two sides of the accommodating groove and is arranged along the long axis, the length of the moisturizing strip is matched with that of the ink-jet device, and the length of the wiping strip is matched with that of the ink-jet device; the moisturizing strip is made of at least one material of sponge, felt or cotton cloth.
11. A printhead with motion protection according to any one of claims 1 to 9, wherein: the protection device comprises an accommodating groove and a sealing strip, wherein the accommodating groove is provided with an upper opening matched with the ink jet device, the accommodating groove is provided with a circle of sealing strip, and the sealing strip is in sealing contact with the ink jet device.
12. A printhead with motion protection according to claim 11, wherein: the protection device further comprises at least one of a negative pressure device and an atomizing device, the negative pressure device is communicated with the accommodating groove, and the atomizing device is arranged in the accommodating groove.
13. A printhead with motion protection according to claim 11, wherein: the protection device further comprises a splash guard, the splash guard is arranged in the accommodating groove and used for sealing the opening of the accommodating groove, and a through hole is formed in the splash guard.
14. A printing apparatus characterized by: a printhead comprising a tape movement protection device according to any one of claims 1 to 13.
Technical Field
The invention relates to the technical field of additive manufacturing, in particular to a printing head with a mobile protection device and printing equipment.
Background
For a 3DP type printer, a layer of powder granular material is paved on a working platform by a powder paving device, then, only the area covered by the surface of a workpiece slice in the layer of powder is molded and solidified by means of laser sintering or adhesive spraying, and the like, and the required workpiece is printed and accumulated to be molded layer by layer.
In the 3DP type printer, the liquid spraying of the printing head is intermittent in operation, and the printing head can start to move and spray after the powder spreading device finishes spreading, and in the waiting time, if the time is too long or the equipment is stopped accidentally, the printing head is in the air and does not spray ink for a long time, dust in the air can enter the spraying holes of the printing head, or the liquid in the spraying head can be solidified and dried, and the two conditions can block the spraying holes, influence the continuity of the printing operation and have great influence on the service life of the printing head.
Disclosure of Invention
The invention provides a printing head with a movement protection device and a printing device, aiming at overcoming the defects of the prior art, and solving a technical problem of better protecting the printing head so that the service life of the printing head is not influenced by dust blockage or drying.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a print head with a mobile protection device comprises a shell, an ink jet device and a protection device; the ink jet device and the protection device are arranged in the shell side by side, the shell is provided with a lower opening, the ink jet device extends out of the lower opening of the shell to perform printing work, and the ink jet device retracts into the shell to be contacted with the protection device.
The lower part of the ink jet device is a printing nozzle, the ink jet device and the protection device are integrated in the shell, the ink jet device is protected in time, the printing nozzle of the ink jet device cannot be dried and blocked, and meanwhile, the protection device is isolated from the external dust environment and is located in the clean environment of the shell, so that the ink jet device can be better cleaned and protected. When the ink jet device works, the ink jet device extends out of only one opening on the shell to perform ink jet work, and when the ink jet device does not work or stops working, the ink jet device retracts into the shell to be contacted with the protection device, and the protection device enables the ink jet device to be moisturized, so that the ink jet device cannot be dried to block the spray hole.
Preferably, the lower opening of the housing is matched with the ink jetting device, the ink jetting device extends from the ink jetting port, and the lowest horizontal plane of the ink jetting device when extending is higher than the lowest horizontal plane of the lower opening.
Because the distance between the shell and the printing surface is only a few millimeters, the lowest horizontal plane of the ink jet device is the plane where the spray holes of the spray head are located, when the ink jet device protrudes out of the lower opening of the shell, more dust is stained on the spray head, the blockage is easily caused, and along with the high-speed movement of the shell, ink sprayed by the protruding spray head can also deviate to a certain extent, so that the printing effect is influenced. The design is inwards sunken with ink jet set, and the minimum horizontal plane when general ink jet set stretches out is higher than the minimum horizontal plane of under shed 1 ~ 2 millimeters, can play dustproof effect on the one hand, and on the other hand can reduce the influence of air current to the ink.
Preferably, the bottom surface of the housing includes an inclined surface and a horizontal surface, the inclined surface is disposed on two sides of the horizontal surface, the horizontal surface is located on a plane where a lowest point of the inclined surface is located, and the lower opening of the housing is disposed on the horizontal surface.
Design into a cross section with the shell bottom surface and be trapezoidal form, this kind accords with hydrodynamics for the air current that acts on the ink is more stable, thereby reduces the ink skew, can also set up a plurality of guide plates that are parallel to each other on the inclined plane, and the guide plate parallels with printer head direction of motion, thereby passes through the air current of horizontal plane, and the air current that also acts on ink jet unit blowout ink droplet is more stable.
Preferably, the shell is closed, preferably sealed, the inner wall of the lower opening of the shell is provided with a circle of sealing ring, the sealing ring is in sealing contact with the ink jet device, and the shell further comprises a closing plate, and the closing plate is used for closing or opening the lower opening of the shell.
The shell is whole sealed, just can guarantee inside cleanliness factor, the sealing washer that sets up is guaranteed to beat inside the high-speed reciprocating motion in-process dust of printer head can not get into the shell, in the ink jet set retraction shell with the protection device contact, use the lower opening of closing plate closed shell and external intercommunication, so can be so that the inside leakproofness of shell all the time, this kind of leakproofness also has the guard action to ink jet set, because ink jet set belongs to accurate component, the integrated circuit board and the control card etc. that go up to set up all need clear operational environment, thereby guarantee normal stable work.
Preferably, the ink jet device is driven to move to the protection device by the driving device, so that the ink jet device is in contact with the protection device; or the driving device drives the protection device to move to the ink jet device, so that the protection device is in contact with the ink jet device.
The driving device is provided with an independent power supply device, so that the ink jet device can be still driven to be in contact with the protection device when the equipment is stopped or powered off, and the aim of protecting the ink jet device is fulfilled.
Preferably, the driving device comprises a protection device driving assembly and an ink jet device driving assembly, the protection device driving assembly comprises a driving piece and a guide piece, the protection device is connected with the guide piece, and the driving piece drives the guide piece to drive the protection device to move in the horizontal direction; the ink jet device driving assembly comprises a driving portion and a moving portion, the driving portion is connected with the moving portion, the moving portion is connected with the ink jet device, and the driving portion drives the moving portion to drive the ink jet device to move in the vertical direction.
The protective device and the ink jet device are each provided with a drive, wherein the ink jet device is moved only in a vertical direction, while the protective device is moved in a horizontal direction, so that the ink jet device retracted into the housing is first lifted to a certain height, and then the matching protective device is moved horizontally below the ink jet device, and then the ink jet device is moved downwards into contact with said protective device.
Preferably, the inkjet device drive assembly further comprises a guide post and a slider, the guide post is arranged on the bottom surface of the shell, the guide post is matched with the slider, the slider slides along the guide post, and the slider is connected with the inkjet device.
Because the long axis direction of the ink jet device is longer, the long axis direction can exceed one meter, so that the guide posts and the slide blocks are arranged at intervals of the extension shaft, the synchronism of the two ends of the ink jet device is limited and ensured, the deviation is avoided, and the stability of the vertical movement can be ensured.
Preferably, drive arrangement includes the inkjet device driving piece, the inkjet device driving piece includes mounting bracket, vertical drive piece, horizontal drive piece, vertical drive piece with the inkjet device is connected, and drives the vertical direction motion of inkjet device, vertical drive piece sets up on the mounting bracket, horizontal drive piece with the mounting bracket is connected, and drives the motion of mounting bracket horizontal direction.
As another embodiment of the driving device, the protection device is fixedly arranged in the shell, and the ink jet device is driven to move to the protection device, so that the movement action of the protection device is reduced, and the work can be completed only by moving the ink jet device. This time a closure plate is required to close the lower opening of the housing.
Preferably, inkjet device drive assembly still includes guide block and sliding block, the guide block is vertical to be set up on the mounting bracket, the sliding block with the guide block phase-match, just the sliding block is followed the guide block slides, the sliding block with inkjet device connects.
Preferably, the protection device comprises an accommodating groove, a moisturizing strip and a wiping strip, the moisturizing strip is arranged in the accommodating groove, the wiping strip is arranged on two sides of the accommodating groove and arranged along a long axis, the length of the moisturizing strip is matched with that of the ink jet device, and the length of the wiping strip is matched with that of the ink jet device; the moisturizing strip is made of at least one material of sponge, felt or cotton cloth.
The protection device utilizes the moisturizing strip in the holding tank to contact with ink jet device's jet orifice to can play the effect of moisturizing, when ink jet device needs work, the shower nozzle leaves the moisturizing strip, and through wiping the strip, clean the ink on the shower nozzle, then carry out subsequent print job.
Preferably, protection device includes holding tank, sealing strip, the holding tank upper shed with inkjet device phase-match, the holding tank upper shed sets up the round the sealing strip, the sealing strip with inkjet device sealing contact.
As another embodiment of the protection device, the liquid is placed in the containing groove, and the ink jet device is in sealing contact with the protection device, so that the sealing and moisturizing effects are achieved.
Preferably, the protection device further comprises at least one of a negative pressure device and an atomizing device, the negative pressure device is communicated with the accommodating groove, and the atomizing device is arranged in the accommodating groove.
After the ink jet device is in sealing contact with the protection device, the negative pressure device starts working for a period of time, a proper amount of ink is sucked out of the spray holes of the ink jet device, the spray head is cleaned, the spray head leaves the containing groove when the ink jet device needs to work, the ink on the spray head is cleaned through the wiping strip, and then subsequent printing work is carried out. Or set up atomizing device in the holding tank, after inkjet device and protection device sealing contact, atomizing device begins work settlement time for keep suitable humidity in the airtight space, thereby play the effect of protection shower nozzle orifice, inkjet device is when needs work, and the holding tank is left to the shower nozzle, and through wiping the strip, clean the ink on the shower nozzle, then carry out subsequent printing work.
Preferably, the protection device further comprises a splash guard, the splash guard is disposed in the accommodating groove and used for sealing the opening of the accommodating groove, and a through hole is formed in the splash guard.
Because there is liquid in the holding tank, and it is high-speed motion to beat when printer head works, and in some cases, protection device also is the motion, so can set up at least one deck splash guard, prevents that the liquid in the holding tank from splashing out, and the holding tank is the row's of china ink hole in addition simultaneously, when the liquid level surpassed the settlement height, will be discharged, and the leakage fluid dram is less than the splash guard.
A printing apparatus comprising a printhead with a movement protection device as described in any one of the above.
According to the technical scheme, the jet orifice protection device and the ink jet device are integrated, the jet orifice protection device and the ink jet device work mutually and do not influence each other, after the printing head finishes ink jet action, the printing head retracts to the protection device quickly, the protection device can effectively solve the problem that the jet orifice of the existing spray head is blocked, the printing head is protected in time, the service life of the printing head of the equipment is greatly prolonged, the printing precision of the equipment is greatly improved, and great guarantee can be provided for the working continuity of the equipment.
Drawings
FIG. 1 is a schematic diagram of a printhead with a motion protection device according to one embodiment of the disclosure.
FIG. 2 is a schematic structural diagram of a printhead with a moving protective device according to an embodiment of the disclosure, with a portion of the housing removed, and an ink jet device extending out of a lower opening of the housing for printing.
FIG. 3 is a schematic view of a print head with a removable protective cover, with an ink jet device extending out of the lower opening of the cover for printing at another angle, according to an embodiment of the disclosure.
FIG. 4 is a schematic diagram of a printhead with a moving guard having a portion of the housing removed and an ink jet device retracted into the housing to contact the guard, according to one embodiment of the disclosure.
Fig. 5 is a schematic structural view of a print head with a moving protective device according to another embodiment of the disclosure, with a portion of a housing removed, and an ink jet device extending out of a lower opening of the housing for printing.
Fig. 6 is a schematic view of a structure of a print head with a movement protector according to another embodiment of the disclosure, with a part of a housing removed, and an ink jet device retracted into the housing.
Fig. 7 is a schematic view of a printhead with a moving guard according to another embodiment of the disclosure with a portion of the housing removed and an ink ejection device retracted into the housing to contact the guard.
Fig. 8 is a schematic structural view of an embodiment of a belt travel guard according to the present disclosure.
Fig. 9 is a schematic structural view of another embodiment of a belt travel guard according to the present disclosure.
In the figure: the inkjet printer comprises a
Detailed Description
A technical solution of the embodiments of the present invention is further described in detail with reference to the accompanying drawings of the present invention.
When the printer is in work, if the printer is stopped, a person needs to manually drive the printing head to the protection position, the scheme is time-consuming and labor-consuming, and if the person is not near the equipment, the problem of stopping the printer cannot be found and treated anytime and anywhere. On the other hand, the printing head at the protection position is in a non-ink-jetting state when waiting for the next process to be completed, and if the next process is too long, the blockage of the jet holes by floating dust in the air cannot be effectively avoided. In addition, the existing protection position is exposed in the air, dust and powder fall on the protection position for a long time, the protection effect on the printing head is very little, and secondary pollution is easily caused by the blockage of the spray hole.
These circumstances all can influence ink jet set 20 above, can lead to the orifice to block up to normal work, until the product inspection time, can not discover the problem, so
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