CN100455498C - Traveling wave type ultrasonic vibration precision conveying device - Google Patents
Traveling wave type ultrasonic vibration precision conveying device Download PDFInfo
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- CN100455498C CN100455498C CNB2006100462754A CN200610046275A CN100455498C CN 100455498 C CN100455498 C CN 100455498C CN B2006100462754 A CNB2006100462754 A CN B2006100462754A CN 200610046275 A CN200610046275 A CN 200610046275A CN 100455498 C CN100455498 C CN 100455498C
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Abstract
The present invention relates to a traveling wave type ultrasonic vibration precise conveying device which solves the problems that a conveying body of the existing traveling wave type ultrasonic powder conveying device is limited by the attenuating requirement of traveling waves, the conveying speed of materials on conveying length is distributed unevenly, etc. The present invention uses a long ring type piezoelectric vibrator as an exciting body, the long ring type piezoelectric vibrator is composed of a long ring type metal ring and a piezoelectric ceramic sheet and is installed on a supporting rod via an elastic element, and the supporting rod is installed on a pedestal. The elliptical motion track of material particles and friction force on the surface of a long ring type piezoelectric vibrator body are used for driving the materials to move in a unidirectional mode, and the precise conveyance of powdery or massive materials is realized. The present invention has the advantages that the conveying body is not limited by the attenuating requirement of traveling waves, etc., and the materials and the length of the conveying body are not limited; the conveying speed is homogeneous and consistent on the whole conveying length, which improves conveying or feeding precision; feeding speed is easy to adjust, and bidirectional conveyance can be realized; the piezoelectric vibrator is connected with the pedestal in an elastic mode to simplify the design.
Description
Technical field
The invention belongs to a kind of device for transporting objects, particularly a kind of traveling wave type ultrasonic vibration precision conveying device.
Background technology
At present, on automatic processing such as machinery, chemical industry, pharmacy, food, material preparation and assembling line, traditional low frequency high-amplitude electric and magnetic oscillation feedway is being continued to use in the short-distance transmission of material or parts and dispensing always.Noise when this feedway is worked is bigger, and the dispensing precision is low, is not easy to realize accurate closed loop control, and power to volume ratio is little, and these problems are restricting the realization of entire system high performance index always.
In recent years, along with the development of ultrasound electric machine technology, people constantly expand the application of piezo-activator, and piezo-activator is being carried out a large amount of research and application aspect powder, the block conveying.People replace with powder, block material with the travelling wave supersonic motor mover, by the elliptical vibration of the ultrasonic frequency domain of micron order of solid surface and to the friction drive of material drive powder, block is carried to desired direction, this technology is commonly called traveling wave type ultrasonic driving conveying technology.
The principle that traveling wave type ultrasonic drive to be carried is different from traditional low frequency high-amplitude vibrating transportation, but it have quiet noiseless, starting stop the fast direct drive of response, power density greatly, characteristics such as not affected by magnetic fields, version micro-miniaturisation, variation.Therefore, traveling wave type ultrasonic drives accurate feed or the conveying that conveying technology is very suitable for a small amount of or micro-powder material or small blocks material.Have broad application prospects at industrial circles such as chemical industry, pharmacy, food, material preparations, be one and realize mass transport micro-miniaturisation, automation, integrated new and high technology.
Existing traveling wave type ultrasonic powder transfer device is made of piezoceramic and the bigger tubule of energy dissipation coefficient, and as shown in figure 14, piezoceramic is sleeved on an end of tubule, imports high frequency voltage on the piezoceramic.Utilize the inverse piezoelectric effect of piezoceramic on the bigger tubule of energy dissipation coefficient, to produce decay row ripple, as shown in figure 15, this decay row waveguide causes the tubule inwall and produces the microcosmic elliptic motion, and the axial rub that powder relies on the tubule inwall is along axially, be fed forward with the direction A opposite with row ripple direction B.The subject matter that above-mentioned traveling wave type ultrasonic powder transfer device exists is: because the traveling-wave ultrasonic powder transfer device must carried generation row ripple on the body, and the elliptic motion trace of particle, therefore, there is the limit for length to carry the wave propagation form of body to become the design-calculated difficult point; Single-phase simple harmonic quantity driving voltage can only excite the stationary wave vibration of carrying body, usually only on the bigger material of energy dissipation coefficient, could produce the capable ripple of decay, and the scope of row wave attenuation is limited, this carries the length of body to be restricted with regard to making, can not be long, can not be too short, when too short, the effect of row ripple is relatively poor, when long, the amplitude of conveying body end certainly will be very little, makes that the delivery speed of conveying body end is very little, thereby limited the length of mass transport.If the mode that adopts a plurality of conveying bodies to be connected strengthens delivered length, certainly will cause the complicated of system architecture again, and the problems such as coupling of joining place mass transport speed.In addition, the amplitude of particle is very inhomogeneous on the conveying body of above-mentioned traveling wave type ultrasonic powder transfer device, makes delivery speed maldistribution on delivered length of powder material, thereby has reduced the degree of precision of conveying or feed.
Summary of the invention
The technical problem to be solved in the present invention is, the conveying body that overcomes existing traveling wave type ultrasonic powder transfer device is subjected to that the row wave attenuation requires to limit, the delivery speed of material problem such as maldistribution on delivered length, provides a kind of and carries each particle amplitude unanimity on the body, carries the body material and length is unrestricted, the traveling wave type ultrasonic vibration precision conveying device of the delivery speed uniformity of material.
The present invention adopts the long ring type piezoelectric vibrator as excitor, the long ring type piezoelectric vibrator is made of long ring type becket and piezoelectric ceramic piece, the long ring type piezoelectric vibrator is installed on the cramp bar by elastic element, cramp bar is installed on the base, the present invention differs 90 °, the above alternating voltage of frequency 20kHz respectively with time and space phase, the capable ripple of bending vibrattion in long ring type piezoelectric vibrator body underexcitation is appeared, utilize long ring type piezoelectric vibrator surface particle elliptical trajectory and friction force, drive the material one-way movement, realize that the precision of powder or block material is carried.
The setting device that matches with cramp bar also is housed, to adjust the precompressed compression between long ring type piezoelectric vibrator and cramp bar on base.
Rectangle double wedge, trapezoidal double wedge or leg-of-mutton double wedge are arranged on the feed surface of long ring type piezoelectric vibrator.
The shape of cross section of described long ring type piezoelectric vibrator straight beam section is rectangle or flute profile.
Described long ring type piezoelectric vibrator be one or along carry Width parallel be provided with a plurality of.
The present invention compared with prior art has following advantage:
1, piezoelectric vibrator when work, identical along the oscillation frequency and the Oscillation Amplitude of each particle on the throughput direction, do not have the problem of capable wave attenuation, thereby on whole delivered length, the delivery speed uniformity has improved the degree of precision of conveying or feed.
2, delivery rate is easy to adjust, and regulates the frequency or the voltage magnitude of excitation and can control the delivery speed of material accurately, and can realize two-way conveying.
3, piezoelectric vibrator is connected with base elasticity, by the precompressed compression between setting device adjustment piezoelectric vibrator and cramp bar, has both realized the supporting to piezoelectric vibrator, does not influence the operation mode of piezoelectric vibrator again, thereby makes design simplification.
4, field of application is wide, can carry accurately or feed powder material, the block bulk material of bulky grain, the precision that is particularly suitable for a small amount of or micro-bulk material is carried or feed, and is easy to realize micro-miniaturisation, the automation, integrated of delivery system.
5, carry body to go the restriction that wave attenuation etc. requires, carry the material and the length of body unrestricted.
6, version variation, and be easy to design, be convenient to be connected mutually with other equipments of industrial product.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3, Fig. 5, Fig. 7, Fig. 9, Figure 11 are the structural representations of long ring type piezoelectric vibrator of the present invention;
Fig. 4 is the left view of Fig. 3;
Fig. 6 is the left view of Fig. 5;
Fig. 8 is the left view of Fig. 7;
Figure 10 is the left view of Fig. 9;
Figure 12 is the left view of Figure 11;
Figure 13 is the structural representation of another embodiment of the present invention;
Figure 14 is the structural representation of existing traveling wave type ultrasonic powder transfer device;
Figure 15 is the scheme drawing of row wave attenuation curve in the existing traveling wave type ultrasonic powder transfer device delivery pipe.
The specific embodiment
Embodiment 1:
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11 and shown in Figure 12, the present invention adopts the long ring type piezoelectric vibrator as excitor, the long ring type piezoelectric vibrator is made of long ring type becket 3 and piezoelectric ceramic piece 12, and long ring type becket 3 is made of upper and lower two straight beam sections and two arc sections; Feed surface at long ring type becket 3 can be pasted friction material, to improve transport efficiency; On the top of long ring type piezoelectric vibrator hopper 7 is housed, hopper 7 is according to the parameter of setting even outputting material on the long ring type piezoelectric vibrator; Described long ring type piezoelectric vibrator is installed on the cramp bar 2 by elastic element 1, elastic element 1 usefulness rubber or other rubber-like material; Cramp bar 2 is installed on the base 5, and base 5 is two, lays respectively at the both sides of long ring type piezoelectric vibrator, so that assembling; Baffle plate 4 also is equipped with in both sides, top at the long ring type piezoelectric vibrator, so that the conveying of material, baffle plate 4 is fixed on the base 5; The setting device 6 that matches with cramp bar 2 also is housed on base 5, described setting device 6 is socket bolts, the front end of setting device 6 withstands on the cramp bar 2, and rotation adjuster 6 can be adjusted the precompressed compression of 2 of long ring type piezoelectric vibrator and cramp bars; Rectangle double wedge 8, trapezoidal double wedge 9 or triangle double wedge 10 are arranged on the feed surface of long ring type becket 3, as Fig. 6, Fig. 8, shown in Figure 10, be beneficial to be fed forward material, described rectangle double wedge 8, trapezoidal double wedge 9 or triangle double wedge 10 are arranged on a side of long ring type becket 3, also can be provided with respectively in the both sides of long ring type becket 3, after the double wedge wearing and tearing of one side, use the double wedge of opposite side; The shape of cross section of described long ring type becket 3 straight beam sections is rectangle or flute profile, channel shape cross-section promptly is to increase a strip shape baffle plate 11 respectively in the both sides of rectangular cross section, as Figure 11 and shown in Figure 12, be beneficial to be fed forward material, double wedge between two strip shape baffle plates 11 is a rectangle double wedge 8, also may be to adopt trapezoidal double wedge 9 or triangle double wedge 10.
Embodiment 2:
As shown in figure 13, its structure such as embodiment 1, difference is, Width is parallel to be provided with two to described long ring type piezoelectric vibrator along carrying, also can along carry Width parallel be provided with a plurality of, to increase the mass transport amount.
Claims (5)
1, a kind of traveling wave type ultrasonic vibration precision conveying device, it is characterized in that, it adopts the long ring type piezoelectric vibrator as excitor, the long ring type piezoelectric vibrator is made of long ring type becket and piezoelectric ceramic piece, the long ring type piezoelectric vibrator is installed on the cramp bar by elastic element, and cramp bar is installed on the base.
2, traveling wave type ultrasonic vibration precision conveying device according to claim 1 is characterized in that, the setting device that matches with cramp bar also is housed on base.
3, traveling wave type ultrasonic vibration precision conveying device according to claim 1 is characterized in that, rectangle double wedge, trapezoidal double wedge or triangle double wedge are arranged on the feed surface of long ring type piezoelectric vibrator.
4, traveling wave type ultrasonic vibration precision conveying device according to claim 1 is characterized in that, the shape of cross section of described long ring type piezoelectric vibrator straight beam section is rectangle or flute profile.
5, traveling wave type ultrasonic vibration precision conveying device according to claim 1 is characterized in that, described long ring type piezoelectric vibrator be one or along carry Width parallel be provided with a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100462754A CN100455498C (en) | 2006-04-06 | 2006-04-06 | Traveling wave type ultrasonic vibration precision conveying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100462754A CN100455498C (en) | 2006-04-06 | 2006-04-06 | Traveling wave type ultrasonic vibration precision conveying device |
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| Publication Number | Publication Date |
|---|---|
| CN1827498A CN1827498A (en) | 2006-09-06 |
| CN100455498C true CN100455498C (en) | 2009-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100462754A Expired - Fee Related CN100455498C (en) | 2006-04-06 | 2006-04-06 | Traveling wave type ultrasonic vibration precision conveying device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TW201825375A (en) * | 2016-11-28 | 2018-07-16 | 比利時商耐斯赤理查發展公司 | Process for pneumatically conveying a powdery material |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2556168Y (en) * | 2002-06-14 | 2003-06-18 | 南京航空航天大学 | Travellng-wave supersonic powder conveying device |
| DE20320326U1 (en) * | 2002-03-01 | 2004-07-15 | Bühner, Kurt | Piezoelectric-ceramic spring elements for an oscillating conveyor system including a springy carrier plate and a piezo ceramic plate useful for transport of small and large parts |
| US20040211646A1 (en) * | 2002-12-19 | 2004-10-28 | Fmc Technologies, Inc. | Conveying apparatus with piezoelectric driver |
| US20050115807A1 (en) * | 2003-09-17 | 2005-06-02 | Fmc Technologies, Inc. | Vibratory conveyor apparatus |
| CN1665119A (en) * | 2005-03-15 | 2005-09-07 | 辽宁工学院 | Annular standing wave linear ultrasonic motor oscillator |
| CN1693156A (en) * | 2005-06-16 | 2005-11-09 | 吴文福 | Suspension prezoelectric vibration hopper |
| CN1693161A (en) * | 2005-06-16 | 2005-11-09 | 吴文福 | Prezoelectric vibration long distence feeding equipment |
| CN2902972Y (en) * | 2006-04-06 | 2007-05-23 | 辽宁工学院 | Constant wave ultrasonic vibration conveyer |
-
2006
- 2006-04-06 CN CNB2006100462754A patent/CN100455498C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20320326U1 (en) * | 2002-03-01 | 2004-07-15 | Bühner, Kurt | Piezoelectric-ceramic spring elements for an oscillating conveyor system including a springy carrier plate and a piezo ceramic plate useful for transport of small and large parts |
| CN2556168Y (en) * | 2002-06-14 | 2003-06-18 | 南京航空航天大学 | Travellng-wave supersonic powder conveying device |
| US20040211646A1 (en) * | 2002-12-19 | 2004-10-28 | Fmc Technologies, Inc. | Conveying apparatus with piezoelectric driver |
| US20050115807A1 (en) * | 2003-09-17 | 2005-06-02 | Fmc Technologies, Inc. | Vibratory conveyor apparatus |
| CN1665119A (en) * | 2005-03-15 | 2005-09-07 | 辽宁工学院 | Annular standing wave linear ultrasonic motor oscillator |
| CN1693156A (en) * | 2005-06-16 | 2005-11-09 | 吴文福 | Suspension prezoelectric vibration hopper |
| CN1693161A (en) * | 2005-06-16 | 2005-11-09 | 吴文福 | Prezoelectric vibration long distence feeding equipment |
| CN2902972Y (en) * | 2006-04-06 | 2007-05-23 | 辽宁工学院 | Constant wave ultrasonic vibration conveyer |
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| CN1827498A (en) | 2006-09-06 |
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Granted publication date: 20090128 Termination date: 20130406 |