CN203764979U - Micro metal molten drop spraying device - Google Patents
Micro metal molten drop spraying device Download PDFInfo
- Publication number
- CN203764979U CN203764979U CN201420064807.7U CN201420064807U CN203764979U CN 203764979 U CN203764979 U CN 203764979U CN 201420064807 U CN201420064807 U CN 201420064807U CN 203764979 U CN203764979 U CN 203764979U
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- crucible
- vibrating arm
- micro
- molten drop
- piezoelectric ceramic
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Abstract
The utility model discloses a micro metal molten drop spraying device. The micro metal molten drop spraying device comprises a drive signal waveform generator virtual instrument, a piezoelectric ceramic transducer, a crucible, a heating element and a micropressure regulating valve, and further comprises a vibration rod end, a vibration rod middle, a thermal insulation protection cover and a replaceable conical-surface-transition cylindrical vibration rod end, a replaceable vibration rod middle and a conical surface crucible heating base. According to the micro metal molten drop spraying device, the bottom of the crucible and a spray nozzle installation position are matched with the vibration rod end; by the adoption of a small diameter, a volume-variable spraying cavity is formed; the upper portion of the crucible is large in inner diameter, as a result, more molten metal can be sorted, and liquid level changes are not drastic in the spraying process; the vibration rod end is of a gradual change structure, the vibration rod end with different diameters can be used for accurately adjusting the structural size of spraying so that the micro metal molten drop spraying device can adapt to melts with different physical properties according to molten metal with different physical properties, on-demand spraying of micro molten drops can be realized under the action of an on-demand driving signal.
Description
Technical field
The utility model belongs to the micro-molten drop jet printing of metal technical field, relates to the micro-molten drop injection apparatus of a kind of metal.
Background technology
The micro-molten drop jet printing of metal technology is to utilize micro-molten drop injection apparatus to make the motlten metal in fusion crucible go out to form the continuous small spherical molten drop line of size uniform or single small spherical molten drop of on-demand from nozzle ejection, for the generation of trace meter material, microballoon make with and deposition modeling, have technique simple, be easy to control, low cost and other advantages, in fields such as metal prototype part rapid shaping, the interconnected salient point printings of integrated circuit microelectronics Packaging, have a extensive future.
In prior art, there is the micro-molten drop injection apparatus of a kind of on-demand metal, its operation principle is: the cavity volume that vibrating arm end and nozzle and crucible form changes, when Piezoelectric Ceramic vibrating arm vibrates, micro melting metal is pushed away from nozzle forms micro-molten drop, the gap size that can regulate vibrating arm periphery and crucible to form by adjusting vibrating arm diameter, thus the size of spraying the micro-molten drop generating regulated to a certain extent.The cavity volume given volume that the method vibrating arm end and crucible and nozzle form, and vibrating arm end is stepped, when vibrating arm vibrates, end is easily taken back the motlten metal that squeezes out nozzle when upwards reclaiming, and the larger motlten metal of viscosity is difficult for producing micro-molten drop.Crucible internal diameter is little, and in course of injection, the liquid level of motlten metal changes greatly, to control pressurer system require highly, and the little volume that causes of crucible internal diameter is little, needs often dismounting crucible to add metal material.This device can only produce micro-molten drop of on-demand in addition, and efficiency is low.
Utility model content
In order to overcome defect of the prior art, solve the problems of the technologies described above, the utility model provides a kind of metal micro-molten drop injection apparatus, the inner hierarchic structure that adopts of crucible, crucible bottom and nozzle installation place coordinate with vibrating arm end, adopt little internal diameter, in order to form the injection cavity volume of volume-variation, crucible top adopts large diameter, in order to store more motlten metals, makes in course of injection level change inviolent; Vibrating arm end adopts grading structure, during the motlten metal of corresponding different physical property, can come the physical dimension of fine adjustment injection to adapt to the melt of different physical property by changing the vibrating arm end of different-diameter size, at on-demand, drive the injection that realizes the molten drop that declines as required under signal function to produce.In addition, change the vibrating arm end of small-diameter sized and change the physical dimension that vibrating arm middle part regulates ejection electrodes, by regulating the pressure reduction of crucible and spray chamber, make melt composition jet, in the effect underlying of continous way vibration, can realize the injection generation of the molten drop line that declines continuously.
Its technical scheme is as follows:
The micro-molten drop injection apparatus of a kind of metal, comprise drive signal waveform generating means virtual instrument 20, piezoelectric ceramic transducer 2, crucible 11, heating element heater 13 and micropressure adjusting valve 8, also involving vibrations boom end 16, vibrating arm middle part 10, heat insulation protection cover 15, the cylindrical vibrating arm end 16 of removable conical surface transition, removable vibrating arm middle part 10, the crucible heating base 12 of the conical surface, the device support member 5 that the conical surface connects, the outside wall surface of crucible 11 matches with the conical inboard wall face of heated base 12, heating element heater 13 is tightly fixed on the external cylindrical surface of heated base 12, the temperature of heating is accurately controlled by temperature controller 14, the periphery of heating element heater 13 is wrapped up by insulated sheath 15, device support member 5 is made for heat-barrier material, centre is processed with radiation proof board 5a, device support member 5 and crucible 11 and install and be the conical surface between upper cover 4 and be connected, connecting portion has sealing gasket 23, piezoelectric ceramic transducer 2 is installed on device upper cover 4 axis places, by piezoelectric ceramics upper cover plate 1, being threaded connection mode with device upper cover 4 compresses, in device upper cover 4, be provided with cooling water cavity 3, by forced-convection heat transfer, to piezoelectric ceramic transducer 2, carry out cooling, the driving signal of piezoelectric ceramic transducer 2 produces signal by virtual instrument 20, after amplifying by power amplifier 19, drive, inert gas source of the gas 6 is by pressure-reducing valve 7 step-downs, the micro-pressure-difference of controlling between crucible 11 and spray chamber 18 by micropressure adjusting valve 8, vibrating arm middle part 10 is cylindrical bar, two ends are processed with external screw thread, all form screw thread pair with the screwed hole of piezoelectric ceramic transducer 2 and vibrating arm end 16, make piezoelectric ceramic transducer 2, vibrating arm middle part 10 and vibrating arm end 16 form vibrational system by being threaded, in the screwed hole of piezoelectric ceramic transducer 2 and vibrating arm end 16, there is cylindrical hole, form matched in clearance with the cylinder of 10 external screw thread ends, vibrating arm middle part, vibrating arm end 16 is conical surface transition straightens footpath cylindrical bar.Further preferably, the outside wall surface of described crucible 11 is the conical surface.
Further preferably, described heating element heater 13 is circular resistance heated circle.
The beneficial effects of the utility model: the utility model produces while declining as required molten drop, the motlten metal 25 of corresponding different physical property, the physical dimension that the vibrating arm middle part 10 of replaceable different length, the vibrating arm end 16 of different-diameter change annular space 22 and cavity volume 21 produces the micro-molten drop of metal.This device also can be used the vibrating arm end 16 of small diameter, under the vibration of the sine-shaped continuous signal of corresponding frequencies, jet crushing is produced to the even micro-molten drop line of metal.When spray nozzle clogging causes micro-molten drop to eject needing nozzle clearing, utilize high frequency large-amplitude vibration to make mentioned nozzle area motlten metal 25 produce ultrasonic cavitation, near the impurity adhering to nozzle is cleared, realize the object of the nozzle of cleaning obstruction, thereby reduce the course of injection unsteady phenomena causing because of spray nozzle clogging or the problem of changing nozzle being dismounted for multiple times.
Accompanying drawing explanation
Fig. 1 is the structural representation of the micro-molten drop injection apparatus of the utility model metal.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described in more detail.
With reference to Fig. 1, the micro-molten drop injection apparatus of a kind of metal, comprise drive signal waveform generating means virtual instrument 20, piezoelectric ceramic transducer 2, crucible 11, heating element heater 13 and micropressure adjusting valve 8, also involving vibrations boom end 16, vibrating arm middle part 10, heat insulation protection cover 15, the crucible heating base 12 of the conical surface, the device support member 5 that the conical surface connects, the outside wall surface of crucible 11 is the conical surface, match with the conical inboard wall face of heated base 12, can guarantee can keep two contact-making surface close contacts to guarantee heat-transfer effect after crucible being dismounted for multiple times, heating element heater 13 is circular resistance heated circle, tightly be fixed on the external cylindrical surface of heated base 12, the temperature of heating is accurately controlled by temperature controller 14, the periphery of heating element heater 13 is wrapped up by insulated sheath 15, device support member 5 is made for heat-barrier material, centre is processed with radiation proof board 5a, device support member 5 and crucible 11 and install and be the conical surface between upper cover 4 and be connected to guarantee axiality, it is airtight that connecting portion has sealing gasket 23 to guarantee, piezoelectric ceramic transducer 2 is installed on device upper cover 4 axis places, by piezoelectric ceramics upper cover plate 1, being threaded connection mode with device upper cover 4 compresses, in device upper cover 4, be provided with cooling water cavity 3, by forced-convection heat transfer, to piezoelectric ceramic transducer 2, carry out cooling, the driving signal of piezoelectric ceramic transducer 2 produces signal by virtual instrument 20, after amplifying by power amplifier 19, drive, inert gas source of the gas 6 is by pressure-reducing valve 7 step-downs, the micro-pressure-difference of controlling between crucible 11 and spray chamber 18 by micropressure adjusting valve 8, vibrating arm middle part 10 is cylindrical bar, two ends are processed with external screw thread, all form screw thread pair with the screwed hole of piezoelectric ceramic transducer 2 and vibrating arm end 16, make piezoelectric ceramic transducer 2, vibrating arm middle part 10 and vibrating arm end 16 form vibrational system by being threaded, in the screwed hole of piezoelectric ceramic transducer 2 and vibrating arm end 16, there is cylindrical hole, form matched in clearance with the cylinder of 10 external screw thread ends, vibrating arm middle part, in order to guarantee piezoelectric ceramic transducer 2, vibrating arm middle part 10 axialities that are connected with vibrating arm end 16, vibrating arm middle part 10 is for being processed into the rod member of a series of length, in order to regulate the distance 21 of vibrating arm end 16 and crucible, vibrating arm end 16 is conical surface transition straightens footpath cylindrical bar, be processed into the different rod member of a series of outside diameters, in order to regulate course of injection backflow gap 22.
The micro-molten drop injection apparatus of the utility model metal is in concrete use procedure: crucible 11, vibrating arm middle part 10, vibrating arm end 16 are cleared up, new nozzle 17 is installed, process and treat deposite metal, remove impurity and surface scale.
Will metal bar material be melted or particulate material put into crucible 11, device is sealed, high purity inert gas is passed into crucible 11 and spray chamber 18, by original Air blowing, reduce the oxygen content of crucible 11 and spray chamber 18 inside.
By temperature controller 14, control heating element heater 13, heated base 12 and crucible 11 are heated up, and the metal in fusion crucible 11, until metal molten and reach design temperature and insulation after, by inert gas source of the gas 6, pressure-reducing valve 7 and micropressure adjusting valve 8, make crucible 11 inside and spray chamber 18 produce micro-pressure-differences, make motlten metal 25 be full of nozzle.
Need to produce while declining as required molten drop, utilize virtual instrument 20 to produce the signal of certain waveform, by power amplifier 19, amplify rear drive piezoelectric ceramic transducer 2, vibrating arm 16 is vibrated downwards along rod axis, cavity volume 21 volumes are reduced, motlten metal is extruded nozzle 17, when vibrating arm 16 upwards reclaims, the motlten metal 25 of ejection, from nozzle fracture, forms micro-molten drop 24, and the motlten metal above vibrating arm end adds to downwards in cavity volume 21 along annular space 22 simultaneously.
Produce while declining as required molten drop, the motlten metal 25 of corresponding different physical property, the vibrating arm middle part 10 of replaceable different length, the vibrating arm end 16 of different-diameter change the physical dimension of annular space 22 and cavity volume 21.
Need to produce while declining continuously molten drop line, use the vibrating arm end 16 of small diameter, by inert gas source of the gas 6, pressure-reducing valve 7 and micropressure adjusting valve 8 make crucible 11 inside and spray chamber 18 produce pressure reduction, make motlten metal 25 form cylindric jet by nozzle ejection, utilize virtual instrument 20 to produce the sine-shaped continuous signal of corresponding frequencies, by power amplifier 19, amplify rear drive piezoelectric ceramic transducer 2, make vibrating arm end 16 along rod axis double vibrations, jet is a branch of size uniform of broken formation under the effect of vibration, the even micro-molten drop line of equidistant metal.
When spray nozzle clogging causes micro-molten drop to eject needing nozzle clearing, utilize virtual instrument 20 to produce the sine-shaped continuous signal that frequency is greater than 16KHz, by power amplifier 19, amplify rear drive piezoelectric ceramic transducer 2, high frequency large-amplitude vibration makes mentioned nozzle area motlten metal produce ultrasonic cavitation, regulate micropressure adjusting valve 8 to make crucible 11 inside and spray chamber 18 produce pressure reduction, near the impurity adhering to nozzle is cleared, realize the object of the nozzle of cleaning obstruction, thereby reduce the course of injection unsteady phenomena causing because of spray nozzle clogging or the problem of changing nozzle being dismounted for multiple times.
Embodiment 1: the micro-molten drop of on-demand metal sprays
Using the utility model device to carry out melt solder metal 25(as leypewter, SAC alloy etc.) micro-molten drop is when spray, will metal bar material be melted or particulate material put into crucible 11, device is sealed, high purity inert gas is passed into crucible 11 and spray chamber 18, by original Air blowing, reduce the oxygen content of crucible 11 and spray chamber 18 inside.
Use the utility model device to carry out melt solder metal (as leypewter, when SAC alloys etc.) micro-molten drop sprays, the temperature that first heating element heater 13 be set on temperature controller 14 more than fusing point 40 degrees Celsius, by solder metal heat fused and keep a period of time so that the motlten metal 25 in crucible 11 melts and reach stable temperature completely, regulate micropressure adjusting valve 8 to make crucible 11 inside and spray chamber 18 produce micro-pressure-differences, make motlten metal 25 be full of nozzle, utilize virtual instrument 20 to produce the signal of certain waveform, by power amplifier 19, amplify rear drive piezoelectric ceramic transducer 2, vibrating arm 16 is vibrated downwards along rod axis, cavity volume 21 volumes are reduced, motlten metal is extruded nozzle 17, when vibrating arm 16 upwards reclaims, the motlten metal 25 of ejection ruptures from nozzle, form micro-molten drop 24, motlten metal above vibrating arm end adds to downwards in cavity volume 21 along annular space 22 simultaneously.
Embodiment 2: the micro-molten drop beam spraying of continous way metal
Using the utility model device to carry out melt solder metal 25(as leypewter, SAC alloy etc.) micro-molten drop is when spray, will metal bar material be melted or particulate material put into crucible 11, device is sealed, high purity inert gas is passed into crucible 11 and spray chamber 18, by original Air blowing, reduce the oxygen content of crucible 11 and spray chamber 18 inside.
Use the utility model device to carry out melt solder metal 25(as leypewter, when SAC alloys etc.) micro-molten drop sprays, the temperature that first heating element heater 13 be set on temperature controller 14 more than fusing point 40 degrees Celsius, by solder metal heat fused and keep a period of time so that the motlten metal 25 in crucible 11 melts and reach stable temperature completely, by inert gas source of the gas 6, pressure-reducing valve 7 and micropressure adjusting valve 8 make crucible 11 inside and spray chamber 18 produce pressure reduction, make motlten metal 25 form cylindric jet by nozzle ejection, utilize virtual instrument 20 to produce the sine-shaped continuous signal of corresponding frequencies, by power amplifier 19, amplify rear drive piezoelectric ceramic transducer 2, make vibrating arm end 16 along rod axis double vibrations, jet is a branch of size uniform of broken formation under the effect of vibration, the even micro-molten drop line of equidistant metal.
Embodiment 3: nozzle cleaning.
When spray nozzle clogging causes micro-molten drop to eject, utilize virtual instrument 20 to produce the sine-shaped continuous signal that frequency is greater than 16KHz, by power amplifier 19, amplify rear drive piezoelectric ceramic transducer 2, high frequency large-amplitude vibration makes mentioned nozzle area motlten metal 25 produce ultrasonic cavitation, regulate micropressure adjusting valve 8 to make crucible 11 inside and spray chamber 18 produce pressure reduction, near the impurity adhering to nozzle is cleared, realize the object of the nozzle of cleaning obstruction, thereby reduce the course of injection unsteady phenomena causing because of spray nozzle clogging.
The above; it is only the preferably specific embodiment of the utility model; protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses, the simple change of the technical scheme that can obtain apparently or equivalence are replaced and are all fallen in protection domain of the present utility model.
Claims (3)
1. the micro-molten drop injection apparatus of metal, comprise drive signal waveform generating means virtual instrument, piezoelectric ceramic transducer, crucible, heating element heater and micropressure adjusting valve, it is characterized in that, involving vibrations boom end also, vibrating arm middle part, heat insulation protection cover, the cylindrical vibrating arm end of removable conical surface transition, removable vibrating arm middle part, the crucible heating base of the conical surface, the device support member that the conical surface connects, the outside wall surface of crucible matches with the conical inboard wall face of heated base, heating element heater is tightly fixed on the external cylindrical surface of heated base, the temperature of heating is accurately controlled by temperature controller, the periphery of heating element heater is wrapped up by insulated sheath, device support member is that heat-barrier material is made, centre is processed with radiation proof board, device support member and crucible and install and be the conical surface between upper cover and be connected, connecting portion has sealing gasket, piezoelectric ceramic transducer is installed on device upper cover axis place, by piezoelectric ceramics upper cover plate, being threaded connection mode with device upper cover compresses, in device upper cover, be provided with cooling water cavity, by forced-convection heat transfer, to piezoelectric ceramic transducer, carry out cooling, the driving signal of piezoelectric ceramic transducer produces signal by virtual instrument, after amplifying by power amplifier, drive, inert gas source of the gas is by pressure-reducing valve step-down, by micropressure adjusting valve, control the micro-pressure-difference between crucible and spray chamber, vibrating arm middle part is cylindrical bar, two ends are processed with external screw thread, all form screw thread pair with the screwed hole of piezoelectric ceramic transducer and vibrating arm end, make piezoelectric ceramic transducer, vibrating arm middle part and vibrating arm end form vibrational system by being threaded, in the screwed hole of piezoelectric ceramic transducer and vibrating arm end, there is cylindrical hole, form matched in clearance with the cylinder of external screw thread end, vibrating arm middle part, vibrating arm end be conical surface transition straighten footpath cylindrical bar.
2. the micro-molten drop injection apparatus of metal according to claim 1, is characterized in that, the outside wall surface of described crucible is the conical surface.
3. the micro-molten drop injection apparatus of metal according to claim 1, is characterized in that, described heating element heater is circular resistance heated circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064807.7U CN203764979U (en) | 2014-02-13 | 2014-02-13 | Micro metal molten drop spraying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064807.7U CN203764979U (en) | 2014-02-13 | 2014-02-13 | Micro metal molten drop spraying device |
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| Publication Number | Publication Date |
|---|---|
| CN203764979U true CN203764979U (en) | 2014-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420064807.7U Withdrawn - After Issue CN203764979U (en) | 2014-02-13 | 2014-02-13 | Micro metal molten drop spraying device |
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| Country | Link |
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| CN (1) | CN203764979U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785834A (en) * | 2014-02-13 | 2014-05-14 | 哈尔滨工业大学 | Jetting device and method for micro molten metal drops |
| CN109434113A (en) * | 2018-12-21 | 2019-03-08 | 北京工业大学 | A kind of driving type piezoelectric actuator droplet ejection device suitable for refractory metal increasing material manufacturing |
| CN111026190A (en) * | 2019-12-13 | 2020-04-17 | 歌尔股份有限公司 | Micro-droplet discharging device and temperature control method thereof |
-
2014
- 2014-02-13 CN CN201420064807.7U patent/CN203764979U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785834A (en) * | 2014-02-13 | 2014-05-14 | 哈尔滨工业大学 | Jetting device and method for micro molten metal drops |
| CN103785834B (en) * | 2014-02-13 | 2016-01-06 | 哈尔滨工业大学 | A kind of micro-molten drop injection apparatus of metal and method |
| CN109434113A (en) * | 2018-12-21 | 2019-03-08 | 北京工业大学 | A kind of driving type piezoelectric actuator droplet ejection device suitable for refractory metal increasing material manufacturing |
| CN111026190A (en) * | 2019-12-13 | 2020-04-17 | 歌尔股份有限公司 | Micro-droplet discharging device and temperature control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140813 Effective date of abandoning: 20160106 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |