CN103335695A - High-precision weighing sensor suitable for electronic balance - Google Patents
High-precision weighing sensor suitable for electronic balance Download PDFInfo
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- CN103335695A CN103335695A CN2013102390163A CN201310239016A CN103335695A CN 103335695 A CN103335695 A CN 103335695A CN 2013102390163 A CN2013102390163 A CN 2013102390163A CN 201310239016 A CN201310239016 A CN 201310239016A CN 103335695 A CN103335695 A CN 103335695A
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- 239000012634 fragment Substances 0.000 claims description 15
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Abstract
The invention relates to a high-precision weighing sensor suitable for an electronic balance, which comprises an integrated elastic body, and is characterized by comprising as well as an equilibrium position adjusting device, a thermometric element, a magnetic steel, a permanent magnet, an electromagnetic coil, an infrared luminescent tube, a photoelectric cell panel, a overshoot protection baffle sheet, a supporting elastic sheet, a balance pan arrester supporting column, a fixed connection adjusting device, wherein the fixed connection adjusting device is used for being connected with and adjusting the integrated elastic body, the thermometric element, the magnetic steel, the permanent magnet, the electromagnetic coil, the infrared luminescent tube, the photoelectric cell panel, the overshoot protection baffle sheet, the supporting elastic sheet, and the balance pan arrester supporting column. The sensor is strong in integrity, firm in structure, not easy to be damaged both in transporting and assembling processes, and attractive in appearance, so as to be able to be widely used in the field of the weighing sensing of electronic balances.
Description
Technical field
The present invention relates to a kind of weighing sensor, more particularly, relate to a kind of weighing sensor that is applicable to electronic balance.
Background technology
Electromagnetic force equilibrium formula weighing sensor is the core building block of electronic balance, and the quality of its quality has decisive influence to the performance of electronic balance.At present, domestic electromagnetic force weighing sensor is based on traditional split forward type sensor, and its principle and technology is at theoretical aspect comparative maturity, but also has following several respects problem in actual production and in using: volume is big, Heavy Weight.Though more rear-mounted sensor is small and exquisite many, with its sensor as electronic balance, still be difficult to realize the lightness of electronic balance, miniaturization; Complex structure, parts are various, and are very high to the requirement of assembler, and the finished product consistance is relatively poor, produce quality in batches and can not get guaranteeing; Connect the used beryllium-bronze reed of each parts of elastic body and hang spring toxicity bigger, healthy influential to the contact personnel; The outward appearance integraty is poor, and is attractive in appearance inadequately; Integral body is solid inadequately, spoilage height in the transportation; Because above factor makes that the whole cost of sensor is higher relatively.
Along with the appearance of the universal various new materials of full-automatic machining center, had the ability to abandon architomia forward type sensor, the integrated integral sensor of invention elastic body, and its calutron partly carried out the miniaturization transformation.Its objective is for the unification of realizing electromagnetic force equilibrium formula weighing sensor performance, the miniaturization of volume, firmization of structure, the simplification of production and the economization of cost.
Summary of the invention
The technical problem to be solved in the present invention is, poor, the whole solid defective inadequately of, Heavy Weight big at the above-mentioned volume of prior art, complex structure, outward appearance integraty, a kind of weighing sensor that is applicable to electronic balance is provided, comprise: integrated elastic body, described weighing sensor also comprises:
The equilibrium position regulating device;
Temperature-sensing element;
Magnet steel;
Permanent magnet;
Solenoid;
The infraluminescence pipe;
Photovoltaic cell module;
The overshoot protection catch;
Prop up heavy shell fragment;
Balance on goods and services load-bearing pillar;
Fixedly connected adjusting gear, described fixedly connected adjusting gear are used for connecting the described integrated elastic body of adjustment, temperature-sensing element, magnet steel, permanent magnet, solenoid, infraluminescence pipe, photovoltaic cell module, overshoot protection catch, a heavy shell fragment, balance on goods and services load-bearing pillar.
Further, described weighing apparatus apparatus for adjusting position further comprises: photoelectricity support, soft magnetic bodies magnet steel cap, photoelectricity support press down screw, the photoelectricity support lifts screw.
Further; described fixedly connected adjusting gear comprises: position error is adjusted screw; the photoelectricity support presses down screw; the photoelectricity support lifts screw, soft magnetic bodies magnet steel cap holding screw, a heavy shell fragment holding screw; the fastening hexagon socket head cap screw of calutron; overshoot protection catch holding screw, coil holding screw, photovoltaic cell module holding screw.
Further, described photoelectricity support lifts screw by the photoelectricity support, and the photoelectricity support presses down screw and is fixed in the soft magnetic bodies magnet steel cap and arranges.
Further, described photovoltaic cell module holding screw is one.
Further, described position error is adjusted screw, photoelectricity support and is pressed down screw, photoelectricity support and lift screw, the fastening hexagon socket head cap screw of calutron, overshoot protection catch holding screw, coil holding screw and be two.
Further, described heavy shell fragment holding screw is three.
Further, described soft magnetic bodies magnet steel cap holding screw is four.
Further, described integrated elastic body comprises: parallel girder, vertical beam, deformation amplify lever, reed, hang spring, angular difference is adjusted arm, magnet steel erecting frame, solenoid erecting frame, Photoelectric Detection seam.
Further, described integrated elastomeric position error is adjusted by described position error adjustment screw, described integrated elastomeric pillar, described heavy reed.
Crucial part of the present invention is the whole elastic body of sensor, comprise deformation amplification lever, all reeds and hang spring, spandrel girder, angular difference are adjusted arm, magnet steel erecting frame, solenoid erecting frame, Photoelectric Detection seam etc., form through the milling machine Cutter Body Processing with Machining Center with a monoblock aviation aluminium, between elastomeric each functional part without any securing member.The present invention changes four used beryllium-bronze single armed reeds of traditional forward type weighing sensor into four machines and mills aluminium matter reed, two both arms reeds in parallel change four machines into and mill aluminium matter reed, two fulcrums hang spring and change two machines into and mill aluminium matter fulcrum and hang spring, series connection both arms hang spring and change pair of series both arms machine into and mill aluminium matter and hang spring, this mills aluminium matter to series connection both arms machine, and to hang spring be in parallel in function, here resolve into purpose that two series connection both arms hang spring and be in order to take into account position error and tensile strength, to be actually and be equivalent to have opened a vertical slot in the centre that former series connection both arms hang spring and change.
Another crucial part of the present invention is when the sensor load-bearing or when being subjected to impacting, all hang spring and all are in extended state.The tensile strength of aluminium is apparently higher than crush resistance strength, and under nonideality, the transverse deformation that produces during stretching will be far smaller than the transverse deformation that produces when pushing.The transverse deformation that hangs spring can produce creep and the angular difference of sensor, and transverse deformation can influence the anti-fatigue life that hangs spring, is designed to the generation that extended state then can be avoided this type of problem.
Another crucial part of the present invention is as long as the precision of machining center is suitable, and material deformation is handled fully, and after time processing was shaped, its position error was very little, and its correction position error is more convenient.Adjust screws and can revise position error by adjusting two position errors, also available file correction projectile gonosome pillar or reach the purpose of revising position error with file correction aluminium matter reed.
The strong magnetic that another crucial part of the present invention is to use ultralow temperature coefficient is as permanent magnet, and strengthened elastomeric lever magnification ratio, makes the volume of magnet steel and weight all pass 1/4th of big device not as good as the weighing of architomia forward type.
Another crucial part of the present invention is to adopt in built-in optoelectronic position governor motion.Built-in photoelectricity governor motion comprises a photoelectricity frame that can be positioned in the soft magnetic bodies magnet steel cap, and two silicon photocells and electroluminescent lamp are housed on it.The upper-lower position of photoelectricity frame can pass through four adjusting screw up-down adjustment, to adjust the equilibrium point position of sensor.
Another crucial part of the present invention is that it is 40mm that a photoelectricity governor motion, solenoid, permanent magnet, soft magnetic bodies magnet steel, soft magnetic bodies magnet steel cap are combined in a diameter, within the right cylinder of height 35mm, and this right cylinder is to be inlaid in fully within the integrated elastic body.Globality, the aesthetic property of sensor are strengthened greatly.
Another crucial part of the present invention is to transship a spacing square shaped gap that is formed by groove and the magnet steel cap of soft magnetic bodies magnet steel lever is carried out up and down spacing, and the overshoot protection catch cooperates a heavy shell fragment can prevent that excessive impact from causing damage to sensor.During normal weighing, lever is the spacing place that can not run into magnet steel.When overloading or being subjected to impacting, lever can be run into spacing place, and elastomeric deformation is no longer strengthened, thus the protection elastic body.And in fact, the elastic body of this kind structure, spacing even without lever is carried out, when a heavy shell fragment was run into the overshoot protection catch, elastic body also can recover in the zone in elasticity fully fully.All these measures can prevent greatly that sensor is because of transportation or improper use damage.
Another crucial part of the present invention is owing to adopted bigger lever enlargement factor and the stronger permanent magnet of magnetic, make the required drive current of solenoid greatly reduce, the power consumption of the control panel of the feasible electronic balance that matches with it reduces, thermal value reduces.The component purchase cost that this has not only reduced control panel has reduced the area of control panel, and the temperature rise can reduce the work of complete machine the time, reduces the temperature of electronic balance and floats.
Another crucial part of the present invention is integrated elastic body less demanding for processing mechanical apparatus.If screw thread is processed by tapping machine, then the minimum requirements of processing equipment only is 2.5 high precision milling machine machining center and non-interlock high precision right angle turntable of a band automatic tool changer function (seven of minimum need of tool magazine capacity).If use 3 machines and bigger tool magazine capacity completely, then can be shaped screw thread also time processing, and profile smooth finish can be done very beautifully.Under the minimalist configuration of machinery, still can shape clamping of integrated elastic body, greatly reduced personal error, what make product can carry out large-scale production, has greatly improved labour productivity, and consistency of product is strengthened greatly.
Implement the weighing sensor that is applicable to electronic balance of the present invention, have following beneficial effect: globality is strong, rugged construction, and sensor is all not fragile in transportation and assembling process, and good looking appearance, thereby can be able to be used widely at the weighing sensory field of electronic balance.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the assembling synoptic diagram of the present invention's weighing sensor of being applicable to electronic balance;
Fig. 2 is the design sketch that the present invention is applicable to the weighing sensor of electronic balance;
Fig. 3 is the stereographic map of the integrated elastic body 1 of Fig. 1;
Fig. 4 is the photoelectricity frame 6 end face three-dimensional effect diagrams of Fig. 1;
Fig. 5 is the three-dimensional effect diagram of photoelectricity frame 6 bottom surfaces of Fig. 1;
Fig. 6 is magnet steel 3 three-dimensional effect diagrams of Fig. 1;
Fig. 7 is the magnet steel 3 and permanent magnet 4 fit back three-dimensional effect diagrams of Fig. 1.
Fig. 8 is the three-dimensional effect diagram of the soft magnetic bodies magnet steel cap 9 of Fig. 1;
Fig. 9 is the three-dimensional effect diagram behind the soft magnetic bodies magnet steel 3, permanent magnet 4, soft magnetic bodies magnet steel cap 9 zoariums of Fig. 1.
Integrated elastic body in the drawings, 1; 2, temperature-sensing element; 3, magnet steel; 4, permanent magnet; 5, solenoid; 6, photoelectricity support; 7, infraluminescence pipe; 8, photovoltaic cell module; 9, soft magnetic bodies magnet steel cap; 10, overshoot protection catch; 11, prop up heavy shell fragment; 12, balance on goods and services load-bearing pillar; 13, adjust screw; 14, the photoelectricity support presses down screw; 15, the photoelectricity support lifts screw; 16, soft magnetic bodies magnet steel cap holding screw; 17, prop up heavy shell fragment holding screw; 18, the fastening hexagon socket head cap screw of calutron; 19, overshoot protection catch holding screw; 20, coil holding screw; 21, photovoltaic cell module holding screw.
Embodiment
See also Fig. 1, be applicable to the assembling synoptic diagram of the weighing sensor of electronic balance for the present invention.As shown in Figure 1, a kind of high precision weighing sensor that is applicable to electronic balance, its main part comprises integrated elastic body 1, temperature-sensing element 2, magnet steel 3, permanent magnet 4, solenoid 5, photoelectricity support 6, infraluminescence pipe 7, photovoltaic cell module 8, soft magnetic bodies magnet steel cap 9, overshoot protection catch 10, a heavy shell fragment 11, balance on goods and services load-bearing pillar 12; Fixedly connected and the adjustment screw of each parts comprises two position errors adjustment screws 13; two photoelectricity supports press down screw 14; two photoelectricity supports lift screw 15; four soft magnetic bodies magnet steel cap holding screws 16; three 18, two overshoot protection catch of the fastening hexagon socket head cap screw of 17, two calutrons of heavy shell fragment holding screw holding screws 19; 20, one photovoltaic cell module holding screws 21 of two coil holding screws.Preferably, temperature-sensing element 2 selects the high precision temperature-sensing element; Preferably, magnet steel 3 is selected the soft magnetic bodies magnet steel; Preferably, permanent magnet 4 selects the low-temperature coefficient permanent magnet.Preferably, the present invention is applicable to that the weighing sensor of electronic balance links to each other with the electronic balance control panel by eight core flat cables, comprises two of photovoltaic cell module output signal lines, two of infraluminescence pipe supply lines, two of solenoid drive wires, two of high precision temperature-sensing element signal wires.
Please in conjunction with consulting Fig. 2, be applicable to the design sketch of the weighing sensor of electronic balance for the present invention.
Please in conjunction with consulting Fig. 3, be applicable to the stereographic map of integrated elastic body 1 of the weighing sensor of electronic balance for the present invention.When this present invention was applicable to the weighing of weighing sensor of electronic balance, balance on goods and services load-bearing pillar 12 was subjected to downward power, after a heavy shell fragment 11 buffering, this power was passed to elastomeric spandrel girder 1-1.Because elastic body is cantilever beam type parallel girder structure, the deformation of spandrel girder generation parallel-moving type, and weight-bearing surface still keeps level.This deformation, hang the power arm 1-4 that spring 1-2 passes to lever by the pair of series both arms, pass through the amplification of lever again, the Photoelectric Detection finedraw 1-10 that makes at resistance arm 1-5 end departs from former balance position, infrared light by 7 emissions of infraluminescence pipe changes through the luminous flux that Photoelectric Detection finedraw 1-10 shines the infrared light of photovoltaic cell module, the electronic balance control panel detects the variation of this photosignal, export corresponding current signal and give solenoid 5, impel Photoelectric Detection seam 1-10 to revert to original equilibrium position, drive lever and spandrel girder simultaneously and revert to former balance position, finish the weighing process.
See also Fig. 4, be applicable to the photoelectricity frame 6 end face three-dimensional effect diagrams of the weighing sensor of electronic balance for the present invention.
See also Fig. 5, be applicable to the three-dimensional effect diagram of photoelectricity frame 6 bottom surfaces of the weighing sensor of electronic balance for Fig. 1 the present invention.
As shown in Figure 4 and Figure 5, luminotron mounting hole 6-1 in the photoelectricity frame 6 is used for installing the infraluminescence pipe, the photoelectricity support presses down screw hole 6-5 and the photoelectricity support lifts screw hole 6-2 for photoelectricity support secured adjusted screw is installed, photoelectric cell line wire hole 6-3 and infraluminescence pipe wire hole 6-4 are used to walk lead-in wire, photovoltaic cell module locating slot 6-7 is used for the location photovoltaic cell module, photovoltaic cell module fixed screw holes 6-8 is used for installing the photovoltaic cell module fixed screw, photoelectric cell anti-bumping rod 6-9 be used for imitative when ending lever and being subjected to side direction external force sassafras hinder photoelectric cell, photoelectricity support locating surface 6-10 is total everywhere, be used for the photoelectricity support is positioned at soft magnetic bodies magnet steel cap, play the effect of horizontal location.The infraluminescence pipe is fixed among the luminotron mounting hole 6-1 with seccotine, and photovoltaic cell module is fixed among the photovoltaic cell module locating slot 6-7 with seccotine earlier, tightens the photovoltaic cell module fixed screw again.
See also Fig. 6, Fig. 6 is applicable to soft magnetic bodies magnet steel 3 three-dimensional effect diagrams of the weighing sensor of electronic balance for Fig. 1 the present invention.
See also Fig. 7, Fig. 7 is applicable to the soft magnetic bodies magnet steel 3 and permanent magnet 4 fit back three-dimensional effect diagrams of the weighing sensor of electronic balance for Fig. 1 the present invention.
See also Fig. 8, Fig. 8 is the three-dimensional effect diagram of the soft magnetic bodies magnet steel cap 9 of Fig. 1.
See also Fig. 9, Fig. 9 is applicable to the three-dimensional effect diagram behind the soft magnetic bodies magnet steel 3, permanent magnet 4, soft magnetic bodies magnet steel cap 9 zoariums of the weighing sensor of electronic balance for Fig. 1 the present invention.
As Fig. 6, Fig. 7, Fig. 8, shown in Figure 9, the center of soft magnetic bodies magnet steel 3 bottom surfaces has a temperature-sensing element mounting hole 3-1 to be used for installing high precision temperature-sensitive thermistor, 3-5 middle position, bottom surface seccotine bonding one cylindrical low-temperature coefficient strong permanent magnetic body 4, stopper slot 3-4 is used for the scope of activities of restriction lever, magnet steel fixed orifice 3-2 is used at the fixing soft magnetic bodies magnet steel of integrated elastic body, and mounting hole 3-3 is used at the fixing magnet steel cap of magnet steel.Between low-temperature coefficient strong permanent magnetic body 4 and the soft magnetic bodies magnet steel 3 annulus gap is arranged, there is a stable static magnetic field air gap inside, and solenoid just moves in this magnetic field air gap.
By implementing the weighing sensor that the present invention is applicable to electronic balance, its beneficial effect is: globality is strong, rugged construction, and sensor is all not fragile in transportation and assembling process, and good looking appearance, thereby can be able to be used widely at the weighing sensory field of electronic balance.
The present invention is described according to specific embodiment, but it will be understood by those skilled in the art that when not breaking away from the scope of the invention, can carry out various variations and be equal to replacement.In addition, for adapting to the specific occasion of the technology of the present invention, can carry out many modifications and not break away from its protection domain the present invention.Therefore, the present invention is not limited to specific embodiment disclosed herein, and comprises that all drop into the embodiment of claim protection domain.
Claims (10)
1. weighing sensor that is applicable to electronic balance, comprising: integrated elastic body (1) is characterized in that described weighing sensor also comprises:
Equilibrium position regulating device (0);
Temperature-sensing element (2);
Magnet steel (3);
Permanent magnet (4);
Solenoid (5);
Infraluminescence pipe (7);
Photovoltaic cell module (8);
Overshoot protection catch (10);
Prop up heavy shell fragment (11);
Balance on goods and services load-bearing pillar (12);
Fixedly connected adjusting gear (22), described fixedly connected adjusting gear (22) are used for connecting adjustment described integrated elastic body (1), temperature-sensing element (2), magnet steel (3), permanent magnet (4), solenoid (5), infraluminescence pipe (7), photovoltaic cell module (8), overshoot protection catch (10), a heavy shell fragment (11), balance on goods and services load-bearing pillar (12).
2. the weighing sensor that is applicable to electronic balance according to claim 1, it is characterized in that described equilibrium position regulating device (0) further comprises: photoelectricity support (6), soft magnetic bodies magnet steel cap (9), photoelectricity support press down screw (14), the photoelectricity support lifts screw (15).
3. the weighing sensor that is applicable to electronic balance according to claim 1; it is characterized in that; described fixedly connected adjusting gear (22) comprising: position error is adjusted screw (13); the photoelectricity support presses down screw (14); the photoelectricity support lifts screw (15); soft magnetic bodies magnet steel cap holding screw (16); prop up heavy shell fragment holding screw (17); the fastening hexagon socket head cap screw of calutron (18); overshoot protection catch holding screw (19); coil holding screw (20), photovoltaic cell module holding screw (21).
4. the weighing sensor that is applicable to electronic balance according to claim 2 is characterized in that, described photoelectricity support (6) lifts screw (15) by the photoelectricity support, and the photoelectricity support presses down screw (14) and is fixed on setting in the soft magnetic bodies magnet steel cap (9).
5. the weighing sensor that is applicable to electronic balance according to claim 3 is characterized in that, described photovoltaic cell module holding screw (21) is one.
6. the weighing sensor that is applicable to electronic balance according to claim 3; it is characterized in that described position error is adjusted screw (13), photoelectricity support and pressed down screw (14), photoelectricity support and lift screw (15), the fastening hexagon socket head cap screw of calutron (18), overshoot protection catch holding screw (19), coil holding screw (20) and be two.
7. the weighing sensor that is applicable to electronic balance according to claim 3 is characterized in that, described heavy shell fragment holding screw (17) is three.
8. the weighing sensor that is applicable to electronic balance according to claim 3 is characterized in that, described soft magnetic bodies magnet steel cap holding screw (16) is four.
9. according to claim 1 at least 8 each described weighing sensors that are applicable to electronic balance, it is characterized in that described integrated elastic body (1) comprising: parallel girder, vertical beam, deformation amplify lever, reed, hang spring, angular difference is adjusted arm, magnet steel erecting frame, solenoid erecting frame, Photoelectric Detection seam.
10. the weighing sensor that is applicable to electronic balance according to claim 9 is characterized in that the position error of described integrated elastic body (1) is adjusted by described position error adjustment screw (13), the pillar of described integrated elastic body (1), described heavy reed (11).
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925982A (en) * | 2014-03-28 | 2014-07-16 | 沈阳龙腾电子有限公司 | Four-corner adjusting mechanism for sensor of electronic balance and electronic balance |
| CN105628912A (en) * | 2014-11-03 | 2016-06-01 | 天津市普瑞仪器有限公司 | Immune chromatographic analyzer |
| CN106197624A (en) * | 2015-05-26 | 2016-12-07 | 梅特勒-托利多仪器（上海）有限公司 | LOAD CELLS and electronic balance |
| CN108955854A (en) * | 2018-07-19 | 2018-12-07 | 刘思颂 | A kind of balance Weighing apparatus and calibration method |
| CN111721657A (en) * | 2019-03-22 | 2020-09-29 | 北京恒久实验设备有限公司 | Array type magnetic core arrangement structure of analytical instrument |
| CN112097872A (en) * | 2020-09-24 | 2020-12-18 | 上海天美天平仪器有限公司 | Integrated weighing sensor and electronic balance |
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| CN103925982A (en) * | 2014-03-28 | 2014-07-16 | 沈阳龙腾电子有限公司 | Four-corner adjusting mechanism for sensor of electronic balance and electronic balance |
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| CN106197624A (en) * | 2015-05-26 | 2016-12-07 | 梅特勒-托利多仪器（上海）有限公司 | LOAD CELLS and electronic balance |
| CN106197624B (en) * | 2015-05-26 | 2019-02-26 | 梅特勒-托利多仪器（上海）有限公司 | Weighing sensor and electronic balance |
| CN108955854A (en) * | 2018-07-19 | 2018-12-07 | 刘思颂 | A kind of balance Weighing apparatus and calibration method |
| CN111721657A (en) * | 2019-03-22 | 2020-09-29 | 北京恒久实验设备有限公司 | Array type magnetic core arrangement structure of analytical instrument |
| CN112097872A (en) * | 2020-09-24 | 2020-12-18 | 上海天美天平仪器有限公司 | Integrated weighing sensor and electronic balance |
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| CN103335695B (en) | 2015-12-02 |
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