CN100503885C - Powder feeder for manufacturing function gradient element or material - Google Patents
Powder feeder for manufacturing function gradient element or material Download PDFInfo
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- CN100503885C CN100503885C CNB2007100532412A CN200710053241A CN100503885C CN 100503885 C CN100503885 C CN 100503885C CN B2007100532412 A CNB2007100532412 A CN B2007100532412A CN 200710053241 A CN200710053241 A CN 200710053241A CN 100503885 C CN100503885 C CN 100503885C
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Abstract
A powder feeder for manufacturing functionally gradient parts or materials belongs to a powder feeding equipment of powder material and can feed powder continuously and easily with powder-feeding amount controllable, powder-feeding distance far and powder-feeding quantity precise in micro amount, as the object of the present invention requires. A casing powder-feeding cavity of the present invention is provided with a driving wheel, a driven wheel, a tightening wheel and a synchronous powder-feeding belt; a powder-feeding notch at one side of the powder-feeding cavity communicates with a gas-sending powder discharging passage of the casing; a bottom plate with a fixed vibrating device is arranged on the casing via mounting screws and elastic rings; a powder-precipitating adjusting device is fixed to the bottom plate; a powder storage barrel is arranged at the upper section of the powder-precipitating adjusting device, and the low section of the powder-precipitating adjusting device is provided with a powder-precipitating tube; the powder-precipitating tube and the powder-storage barrel communicate via a round tube sleeved with a spring; the lower part of the powder-precipitating tube and the end part of a powder-guiding groove keep in contact with the synchronous powder-feeding belt; the opening direction of the powder-guiding groove is as same as that of the rotation of the synchronous powder-feeding belt. The present invention has the advantages of compact structure, uniform and continuous powder feed, long powder-feeding distance as well as precise micro-amount powder feed realization, and can meet the manufacture requirements of various functionally gradient parts or materials.
Description
Technical field
The invention belongs to the powder conveyer of powdered material, be specifically related to the powder feeder of a kind of manufacturing function gradient parts or material.
Background technology
Functionally gradient part or material are in order to adapt to the needs of novel material in high-tech sector, to satisfy a kind of NEW TYPE OF COMPOSITE part or the material developed in the continuous down works better repeatedly of extreme environment (ultrahigh-temperature, big temperature fall etc.).The both sides of composite part or material are made up of the material of different performance, and middle portion is by changing the The Nomenclature Composition and Structure of Complexes of two kinds of materials continuously, the foreign material interface, inside of composite part or material is disappeared, thereby obtain function corresponding to the variation of The Nomenclature Composition and Structure of Complexes and gradual heterogeneous material part or matrix material, thereby eliminated the differing materials bonded performance factor that do not match, had the homogeneous material part or heterogeneous the incomparable advantage of interface composites arranged.The automatic powder feeding system of different composition material powder mainly contains the method for presetting and synchronous powder feeding system method in functionally gradient part or the material manufacturing.The method that presets is promptly put the certain ingredients mixed powder in (worktable) workpiece surface shop in advance, adopt high energy beam such as laser to need shaped portion carry out sintering, the method for presetting gradient material part and the stratiform functional gradient composite materials that discontinuous constituent changes that to be shaped to part or material.The synchronous powder feeding system method is to adopt powder conveyer directly powder to be transported in the mobile molten bath that laser (plasma arc) forms on working face, form an aspect of part after the weld pool solidifies, adopt the synchronous powder feeding system method can make material composition continually varying functionally gradient part or material.Existing powder conveyer mainly contains direct gravity type boat davit, scraper-type, screw and drum type.Directly the gravity type boat davit powder conveyer utilizes the powder self gravitation to make it be quantitatively transferred to the shaping molten bath by control storage powder container (powder bucket) lower ending opening size control powder dropping amount, and this mode powder sending quantity is wayward, can't accurate measurement, and tolerance range is poor, and row's powder is not smooth.The scraper-type powder conveyer utilizes the scraper plate amount of pursuing row powder, volume is big, structure is complicated, will be in the course of conveying through very big powder storehouse, easy accumulated powder, and since during the scraper-type powder feeding its powder feeding metering be the natural circular cone that powder forms on the powder feeding disk under the metering powder discharging device, the rotating speed that changes the powder feeding disk is realized the control to powder sending quantity, owing to be difficult to guarantee the planeness in the powder feeding disk installation and operation process, make the amount of powder of sending can not be fine controlled.
The Chinese patent CN 2584340Y of application in 2002 announces a kind of laser melting coating powder feeder, it adopts the spiral automatic powder feeding system, screw rod and powder groove inwall are slidingly matched in the use, because abrasive action, it asks that the gap can change, cause the powder sending quantity variation and in the powder feeding process, produce the screw rod stuck phenomenon easily, thereby cause powder feeding to interrupt forcing processing to stop; Chinese patent CN 2555103Y has announced a kind of laser and has applied powder feeder, adopt rotary drum to make the powder feeding measuring element, the rotary drum outside surface is carved with even groove, rotary drum rotates under driven by motor, groove is from left side powder-storage bin dose powder, by regulating the charge level height of rotary drum rotating speed and powder-storage bin, realize the adjustable quantitative powder feeding.Powder sending quantity drives powder by groove and realizes that because groove quantity is limited, the powder sending quantity of powder presents the periodically pulsing change procedure when making powder feeding in its powder feeding process, and this phenomenon is particularly evident when micro-powder feeding.
Summary of the invention
The invention provides the powder feeder of a kind of manufacturing function gradient parts or material, adopt the digital control powder sending quantity of stepper-motor, purpose is continuous and easy to control powder sending quantity, and the powder feeding distance realizes accurately powder feeding of trace.
The powder feeder of a kind of manufacturing function gradient parts of the present invention or material is provided with power collecting bucket above the housing, have meal outlet below the housing, it is characterized in that:
Motion-work wheel, follow-up pulley, tightening pulley and synchronous powder feeding system band are installed in the powder feeding chamber of described housing, the synchronous powder feeding system band by motion-work wheel and follow-up pulley drive, by the tightening pulley tensioning, one side in powder feeding chamber has the powder feeding breach, is connected with the powder spout of supplying gas of housing one side;
The base plate that is fixed with vibrating device is installed on the housing by mounting screw and resilient ring, and the powder setting device that falls of hollow cylindrical is fixed in the bottom center hole;
Described power collecting bucket is loaded in the powder setting device epimere, in the powder setting device that the falls hypomere powder sinking tube that is slidingly matched is housed, powder sinking tube and power collecting bucket are communicated with by pipe, pipe is with spring outward, guider screw plays the slide-and-guide effect at the guide path of powder setting device hypomere screw-in powder sinking tube sidewall that falls;
Described powder sinking tube bottom has leads the powder groove, leads powder groove end and the synchronous powder feeding system band keeps in touch, and it is consistent with synchronous powder feeding system tape travel direction to lead powder channel opening direction.
The powder feeder of described manufacturing function gradient parts or material is characterized in that: the described powder setting device outer wall that falls has screw thread, is fixed in the bottom center hole by set nut; The internal diameter of the powder spout epimere part of supplying gas forms powder feeding gas and quickens the hole less than the internal diameter of other parts.
The present invention adopts the powder feeding of synchronous powder feeding system band structure.Material powder is fallen on the synchronous powder feeding system band in by power collecting bucket under the effect of vibrating device and gravity in the powder feeding process, extruding when vibrating device has been avoided flow of powder and friction and fines fall bridging and obstruction in the powder process.What the powder that falls surveyed that regulating device eliminated powder sinking tube leads powder groove and synchronous powder feeding system band gap, and the metering that makes the powder amount has guaranteed the accurate of powder metering that fall only by powder sinking tube pore footpath with lead the decision of powder groove size.The powdered material that the synchronous powder feeding system band structure will fall on it is sent into powder spout.Send by meal outlet as the material powder that the powder delivery vehicles will enter powder spout through the powder feeding gas that quickens.The adding of powder feeding gas can increase the fed distance of powder, and reduces the influence that powder feeding pipes is arranged.
Compare with traditional gravity type boat davit, scraper-type, screw and hub-type powder feeder, the powder sending quantity of powder feeder of the present invention is continuous and easy to control, the powder feeding distance can realize the accurate powder feeding of digital control trace, realizes the powder feeding requirement of various powders manufacturing function gradient parts or material.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the embodiment of the invention powder setting device synoptic diagram that falls.
Mark among the figure: power collecting bucket 1, vibrating device 2, base plate 3, the powder setting device 4 that falls, housing 5, powder sinking tube 6, powder feeding chamber 7, synchronous powder feeding system band 8, follow-up pulley 9, tightening pulley 10, meal outlet 11, motion-work wheel 12, powder feeding breach 13, lead powder groove 14, powder feeding gas and quicken hole 15, deceleration device 16, powder feeding gas inlet 17, guider screw 18, set nut 19, resilient ring 20, mounting screw 21, guide path 22, spring 23.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
As shown in Figure 1, motion-work wheel 12, follow-up pulley 9, tightening pulley 10 and synchronous powder feeding system band 8 are installed in the powder feeding chamber 7 of housing 5 of the present invention, synchronous powder feeding system band 8 by motion-work wheel 12 and follow-up pulley 9 drive, by tightening pulley 10 tensionings, one side in powder feeding chamber 7 has powder feeding breach 13, is connected with the powder spout of supplying gas of housing one side; The powder spout upper shed of supplying gas is that powder feeding gas inlet 17, lower opening are meal outlet 11, and the internal diameter of the powder spout epimere part of supplying gas forms powder feeding gas and quickens hole 15 less than the internal diameter of other parts.
As shown in Figure 2, the base plate 3 that is fixed with vibrating device 2 is installed on the housing 5 by mounting screw 21 and resilient ring 20, and powder setting device 4 outer walls that fall of hollow cylindrical have screw thread, are fixed in base plate 3 centre holes by set nut 19; Power collecting bucket 1 is loaded in powder setting device 4 epimeres, in the powder setting device that falls 4 hypomeres powder sinking tube 6 that is slidingly matched is housed, powder sinking tube 6 and power collecting bucket 1 are communicated with by pipe, pipe is with spring 23 outward, guider screw 18 plays the slide-and-guide effect at the guide path 22 of powder setting device hypomere screw-in powder sinking tube 6 sidewalls that falls;
Among this embodiment, vibrating device 2 adopts the pneumatic rotary-type vibrator of k10 type, vibrator 2 is under the working gas effect, the power collecting bucket 1 that drives base plate 3 and be fixed on the base plate 3 is done high frequency (about 24500-35000vpm) side-to-side vibrations jointly with the powder setting device 4 that falls, avoided refining metallic powder fall bridging and obstruction in the powder process, made powder be easy to flow.
The powder setting device that falls 4 adopts the spring regulative mode.Powder sinking tube 6 is under the effect of spring 23, keeping it to lead powder groove 14 ends contacts with synchronous powder feeding system band 8 all the time, when the synchronous powder feeding system band 8 of below has among a small circle fluctuation up and down in operation process, powder sinking tube 6 can slide in vertical direction along the guide path on its outer wall 22, the fluctuation that elimination is brought by 8 runnings of synchronous powder feeding system band, keep leading contacting of powder groove 14 ends and synchronous powder feeding system band 8, thereby when making powder fall within on the synchronous powder feeding system band 8 by leading powder groove 14, the amount of falling of powder is determined with the bore of leading powder groove 14 by the aperture of powder sinking tube 6 fully.Regulate the position of two set nuts 19, can change the up and down installation site of powder setting device 4 on base plate 3 that fall, change the pre-pressing force of spring 23.
When the present invention used, the powder in the power collecting bucket 1 was regulated through the powder setting device 4 that falls under vibrating device 2 and action of gravity, was fallen by powder sinking tube 6 on tension pulley 10 the synchronous powder feeding system band 8.The synchronous powder feeding system band turns round under the drive of stepper-motor and deceleration device 16 and motion-work wheel 12, follow-up pulley 9, driving to powder feeding breach 13 directions by the metal-powder of leading 14 derivation of powder groove, when powder drives down to powder feeding breach 13 positions by synchronous powder feeding system band 8, under powder self gravitation and the conveying effect from the powder feeding gas (quickening hole 15 effects through powder feeding gas) of powder feeding gas inlet 17, powder is sent from powder feeding mouth 11 belows.
By step motor control motion-work wheel 12 rotating speeds, it is the may command powder sending quantity, in addition powder sinking tube 6 apertures and lead powder groove 14 bores can be according to powder feeding powder kind, and granular size, the regulation range of powder sending quantity is changed at any time, and the design of this two-parameter adjusting powder sending quantity can adapt to the manufacturing function gradient parts common under the various application scenarios or the powder feeding requirement of material.
Among the embodiment under the step motor control motion-work wheel 12 rotating speeds be 0-100 rev/mins, powder sinking tube 6 apertures are 2.5mm, leading powder groove 14 bores is 2.5mm, metal-powder Ni60 (powder density 7.5 gram/cm
3) powder sending quantity is 0-200 gram/minute, AL
2O
3Powder (powder density 2.8 gram/cm
3) powder sending quantity is 0-75 gram/minute.
Claims (2)
1. the powder feeder of manufacturing function gradient parts or material is provided with power collecting bucket above the housing, has meal outlet below the housing, it is characterized in that:
Motion-work wheel, follow-up pulley, tightening pulley and synchronous powder feeding system band are installed in the powder feeding chamber of described housing, the synchronous powder feeding system band by motion-work wheel and follow-up pulley drive, by the tightening pulley tensioning, one side in powder feeding chamber has the powder feeding breach, is connected with the powder spout of supplying gas of housing one side;
The base plate that is fixed with vibrating device is installed on the housing by mounting screw and resilient ring, and the powder setting device that falls of hollow cylindrical is fixed in the bottom center hole;
Described power collecting bucket is loaded in the powder setting device epimere, in the powder setting device that the falls hypomere powder sinking tube that is slidingly matched is housed, powder sinking tube and power collecting bucket are communicated with by pipe, pipe is with spring outward, guider screw plays the slide-and-guide effect at the guide path of powder setting device hypomere screw-in powder sinking tube sidewall that falls;
Described powder sinking tube bottom has leads the powder groove, leads powder groove end and the synchronous powder feeding system band keeps in touch, and it is consistent with synchronous powder feeding system tape travel direction to lead powder channel opening direction.
2. the powder feeder of manufacturing function gradient parts as claimed in claim 1 or material is characterized in that: the described powder setting device outer wall that falls has screw thread, is fixed in the bottom center hole by set nut; The internal diameter of the powder spout epimere part of supplying gas forms powder feeding gas and quickens the hole less than the internal diameter of other parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100532412A CN100503885C (en) | 2007-09-14 | 2007-09-14 | Powder feeder for manufacturing function gradient element or material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100532412A CN100503885C (en) | 2007-09-14 | 2007-09-14 | Powder feeder for manufacturing function gradient element or material |
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| Publication Number | Publication Date |
|---|---|
| CN101117711A CN101117711A (en) | 2008-02-06 |
| CN100503885C true CN100503885C (en) | 2009-06-24 |
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| CNB2007100532412A Expired - Fee Related CN100503885C (en) | 2007-09-14 | 2007-09-14 | Powder feeder for manufacturing function gradient element or material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110920072A (en) * | 2019-12-05 | 2020-03-27 | 中国航发北京航空材料研究院 | Preparation method of gradient material component |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482367B (en) * | 2013-07-05 | 2016-01-20 | 北京工业大学 | A kind of powder feed system of polycomponent powdered ingredients real-time variable |
| CN104475723A (en) * | 2014-12-20 | 2015-04-01 | 扬州市海力精密机械制造有限公司 | Special powder conveying device for powder forming machine and work process of special powder conveying device |
| CN111113627B (en) * | 2019-11-29 | 2022-01-28 | 广东工业大学 | Preparation device and preparation method for preparing continuous functional gradient material by dry mixing |
| CN112373757B (en) * | 2020-11-04 | 2022-03-11 | 常州嘉业智能装备科技有限公司 | Prevent leaking powder ration partial shipment equipment |
| CN113333916A (en) * | 2021-06-02 | 2021-09-03 | 南京理工大学 | Rotary ultrasonic vibration gas current-carrying powder feeder and electric arc material increase system |
| CN113355669B (en) * | 2021-06-04 | 2023-05-23 | 华中科技大学 | Ultra-high-speed reinforcing phase particle uniform distribution device in metal matrix composite forming |
| CN114717550B (en) * | 2022-04-21 | 2024-05-03 | 上海蓝珂激光科技有限公司 | Equipment for laser cladding processing |
-
2007
- 2007-09-14 CN CNB2007100532412A patent/CN100503885C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 激光快速成型送粉器及其特性. 崔海涛，李强，武强，王旭葆，左铁钏.北京工业大学学报，第28卷第3期. 2002 |
| 激光快速成型送粉器及其特性. 崔海涛，李强，武强，王旭葆，左铁钏.北京工业大学学报，第28卷第3期. 2002 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110920072A (en) * | 2019-12-05 | 2020-03-27 | 中国航发北京航空材料研究院 | Preparation method of gradient material component |
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| CN101117711A (en) | 2008-02-06 |
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Granted publication date: 20090624 Termination date: 20110914 |