CN104501922A - Electronic measuring and weighing unit of checkweigher - Google Patents
Electronic measuring and weighing unit of checkweigher Download PDFInfo
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- CN104501922A CN104501922A CN201510004501.1A CN201510004501A CN104501922A CN 104501922 A CN104501922 A CN 104501922A CN 201510004501 A CN201510004501 A CN 201510004501A CN 104501922 A CN104501922 A CN 104501922A
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Abstract
The invention provides an electronic measuring and weighing unit of a checkweigher. The electronic measuring and weighing unit of the checkweigher comprises a supporting frame, and a weighing sensor which is fixedly arranged on the supporting frame; a rigid weighing chute is fixedly arranged in the weighing sensor. The electronic measuring and weighing unit of the checkweigher is characterized in that the rigid weighing chute is in an angle A with the level in the length direction, wherein A is more than 0 degree and less than 90 degrees; a rigid feeding chute is fixedly arranged in the supporting frame or a feeding device or an independent bracket; the chute is parallel to and opposite in a short distance with the weighing chute, does not contact with the weighing chute and is slightly higher than the weighing chute; the bearing end of the weighing sensor is rigidly connected with the rigid weighing chute, and the designed bearing stress direction of the weighing sensor is vertical to the length direction of the rigid weighing chute; a weighing control instrument is provided and electrically connected with the weighing sensor.
Description
Technical field
The electronic measurement that this programme relates to a kind of checking weight weigh is weighed unit, is mainly used in the automatic dynamic weight detecting of interrupted lump material.
Background technology
All electronic weighing appliances (containing: electronic scales) are all experience the weight of weighed object by sensor.Electronic weighing appliance adopts force snesor or the gravity of LOAD CELLS metering object in locality mostly.As everyone knows, the gravity of object is perpendicular to object location surface level.All the time, all by strict designated mounting mode and stress point and direction when force snesor or LOAD CELLS use, in order to avoid affect sensor accuracy.For reducing the component deviation of sensor, current nearly all sensor production factory, weighing-appliance factory, textbook, industry standard of weighing and specification, material for training, equipment operating debugging specification data all require that LOAD CELLS must level be installed, in order to avoid vertical gravity weighs important deviation on direction in the non-design of sensor.Error caused by on-the-spot non-horizontal mounting must reduce or eliminate by demarcating correction.Weigh and packaging industry or Weighing Apparatus Industry technician all view sensor level be installed as be accustomed to, customary, right and proper.
Dynamic electron is weighed and is referred to continuous weighting in weighed object operational process.The motion carrier being weighed object of existing dynamic electronic scale has belt, roll shaft, dissepiment, air-blowing etc., in the document that can consult and data, all Weighing unit and sensor levels are installed in the Design of Mechanical Structure of aforementioned all dynamic electronic scales, in order to avoid gravity weighs important deviation on direction in the non-design of sensor.
The automatic dynamic electronic weight go-on-go scale of LOAD CELLS is adopted mostly to adopt Belt Conveying material, also known as screening scale, sort scale, checking weight weigh, heavily inspection scale etc., mainly for the production of line or packaging line, dynamically online product weight weighed, monitor, record, FEEDBACK CONTROL, also can by preset weight range product is sorted, classification, rejecting.Screening scale scale structure of the prior art is primarily of following four parts compositions: electrical control gear, claimed the preposition material loading feeder (containing sending belt to) of article, electronic weighing unit (containing feed belt of weighing), device for eliminating (containing rejecting belt).
Checking weight weigh Weighing unit is primarily of parts compositions such as Weighing control instrument, LOAD CELLS, scale bodies.
There is the following problem caused by scale body structure for conveying in the electronic measurement of checking weight weigh unit of weighing: vibrations that in electronic-weighing metering units, rotatable parts unbalance mass, causes or beat and have a strong impact on weighing precision always, the invalid weigh of the physical construction of electronic-weighing metering units own also affects weighing precision, the high-accuracy mechanical processing cost of metering units running gear have impact on the economy of go-on-go scale weighing unit, maintenance cost, all rotary parts have speed limit decision go-on-go efficiency significantly to improve, because rotary part is difficult to realize the usable range that high-grade protection and hygienic requirements seriously constrain go-on-go scale weighing unit.
If adopt slideway to replace belt conveyor, sensor levels to arrange experience the vertical stress component of material suffered by slideway to slideway pressure by transmission rod again, can solve rotatable parts interfering object, still there are the following problems affects the problem of weighing precision and usable range: 1, sensor has the friction force of material instability in exporting; 2, weight of material exports at sensor is that decay is too many; 3, be not suitable for much needing high spud angle use occasion; 4, material signal is low to slideway deadweight accounting.Material can export to sensor and bring very large interference when feed bin or parallel belts fall into the slideway of inclination, exports bring very big error to weighing instrument.
Summary of the invention
This patent to be weighed the deficiency that unit exists for the electronic measurement of existing checking weight weigh, especially for people's inertia mistake in understanding all the time, the electronic measurement proposing a kind of checking weight weigh is weighed unit, that is: with slideway replace Belt Conveying material disturb to eliminate rotatable parts, parallel feeding slideway is installed to eliminate material loading in slideway front end of weighing time disturb perpendicular to the impulsive force of slideway of weighing, make its Impact direction vertically with slideway of weighing disturb to eliminate friction force during sensor installation, realize wide-angle tilt to solve various specific question.It efficiently solves all problems of current go-on-go scale metering units.
The technical scheme that this patent is taked is: a kind of electronic measurement of checking weight weigh is weighed unit, it comprises bracing frame and is fixedly installed at least one LOAD CELLS on bracing frame, LOAD CELLS is fixedly installed slideway of weighing, it is characterized in that weighing slideway length direction horizontal by an angle A, 0 ° of < A < 90 ° (slideway length direction of weighing is appointed as material landing direction); LOAD CELLS bearing end be rigidly connected with slideway of weighing and LOAD CELLS design to carry Impact direction vertical with slideway length direction of weighing; Also be provided with the Weighing control instrument be electrically connected with LOAD CELLS.
The concrete feature of this programme also has, described in weigh the rigid body that slideway hard wear-resistant material makes, the Baltimore groove in both ends open or plane or bobbin body shape structure.As the trough body structure that: slideway of weighing can be the upper and LOAD CELLS connecting elements of reprocessing after stainless steel bending; Also can be wear-resisting steel plate welded structure; It can also be the material that the friction factor such as tempered glass are very little.
Weigh and slideway is provided with ball, roller, roller with material contact portion or does waviness or be evenly covered with concaveconvex shape, or cover the lubricant such as grease, hairbrush, increase the material property passed through to reduce friction factor.
Slideway front of weighing is provided with independently feeding slideway.The feeding slideway be arranged at before slideway feed end of weighing guarantee from the material of production line pay-off the direction of motion of the discharge end of feeding slideway become and the lubricating substance direction of slideway of weighing consistent.Concrete relative position should meet impulsive disturbance large to output generation of weighing when not making material slide into slideway of weighing from feeding slideway.
Feeding slideway is the rigid body made with hard wear-resistant material; Feeding slideway discharging opening is suitable and keep gap with slideway charging aperture of weighing, and the discharging direction of feeding slideway discharging opening is parallel with slideway lubricating substance direction of weighing, and the chute surface of feeding slideway is slightly higher than the chute surface of slideway of weighing.Feeding slideway can adopt same material, same section structure, same lubricant method with slideway of weighing; Feeding slideway also according to material special shape, can adopt different section profile, finally at the profile that discharging opening becomes and slideway of weighing is same; Feeding slideway can with slideway different length of weighing; Feeding slideway can be rigidly attached on bracing frame, also can be rigidly attached on production line pay-off, can also be independent support; Feeding slideway discharge end has spacing relative with the feed end of slideway of weighing, do not connect, do not contact, feeding slideway can be plane slideway, also can be curved surface slideway, its discharge end profile should be consistent with slideway feed end of weighing, its profile within slideway feed end profile of weighing, should can not have joining.
Described LOAD CELLS is shearing force LOAD CELLS or single-point balance beam sensor.Generally being arranged on rigidity weighs below slideway.According to chute width, LOAD CELLS must have certain thickness, can anti-side-sway, unbalance loading.
According to material, rigidity is weighed the friction factor of slideway and production line requirement, weigh slideway and level A(in a certain angle of rigidity meets and needs the material of dynamic weighing on rigidity weighs slideway to slide, the modes such as rolling are parallel to rigidity slideway of weighing and pass through), carrier is slid past as what be weighed material, the weigh bearing end of slideway and LOAD CELLS (or force snesor) of rigidity is rigidly connected, and it is vertical to make LOAD CELLS design Impact direction and rigidity slideway length direction (i.e. material traffic direction) of weighing, stiff end and the bracing frame of LOAD CELLS are rigidly connected, bracing frame is rigidity, its position is not moved because material passes through, LOAD CELLS is electrically connected with Weighing control instrument by cable.
Rigidity weigh the design consideration material size of slideway length, travelling speed and weighing instrument response speed and determine.Generally, 1.5 times that table top material movement direction length is greater than the most length direction of material are measured.The angle of slideway and the level of weighing and bracing frame install the angle determination principle of bottom surface to LOAD CELLS: can according to the feeding speed of the arrangement of production line rate, space, production scene, Weighing control instrument range and sampling time and resolution, material and weigh friction factor, feed mechanism between slideway and feeding slideway, material shapes of materials, warm and humid state, Weighing control instrument need material weigh on slideway accelerate, at the uniform velocity, deceleration etc. requires and determines, angle can from being greater than 0 ° to close to 90 °; Also automatic angle mechanism can be made, on-the-spot artificial or Lookup protocol.
The installed surface of the bearing end of LOAD CELLS may be vertical with design Impact direction, also may be parallel; The installed surface of stiff end also may be vertical with design Impact direction, also may be parallel.Weigh slideway and bracing frame coordinates mounting means with the concrete of LOAD CELLS, can adjust according to the concrete LOAD CELLS adopted.The LOAD CELLS that this programme embodiment adopts is that the installed surface of bearing end is parallel with the installed surface of stiff end and all vertical with design Impact direction.
For expanding weigh range or material metage area or material Negotiation speed, weigh slideway area or load capacity must be strengthened, LOAD CELLS is 1 or 2 or 4 or more even number, they must be rigidly connected with slideway of weighing, their design Impact direction all must be vertical with slideway length direction of weighing, and their installation bottom surface must be parallel.
Also must meet when described LOAD CELLS is rectangle LOAD CELLS and make gravity not produce component in LOAD CELLS side facet normal direction.
Weighing control instrument is dynamic continuous weighting in material landing process.During equipment debugging, first to its static weighing Calibration, then operation state performance is revised: using the accurate weight of actual material to the ratio of this material test result of weighing of Weighing control instrument display when weighing landing on slideway as correction factor or using the weight of its special calibrating thing to the ratio of test result of weighing of this demarcation thing Weighing control instrument display when weighing landing on slideway as correction factor.Weighing control instrument can be independently, or A/D module adds the array configurations such as display module, also can be embedded in in other equipment, or control display system a set of with other collaborative share, can also be PC etc.
The beneficial effect of this programme is: 1, the electronic measurement thoroughly solving checking weight weigh is weighed the dynamic weighing precision problem of unit, the dynamic weighing meeting more occasions requires: relative to the belt conveyer scale adopting LOAD CELLS, eliminate cylinder, belt, bearing, motor, after Timing Belt, scale body is reduced to a slideway of weighing, the impost of this body structure alleviates greatly, can greatly be improved by the ratio claiming the weight of material to account for transducer range, again because rigidity slideway length of weighing is vertical with sensor design loading direction, sensor exports just can be larger, the resolution of instrument signal can be higher, scale body does not have rotary part, and would not produce scale running body amount of unbalance, weighing precision can improve greatly, do not have running gear, its cost efficiency improves certainly greatly, do not have moving component to be easy to realize high-grade water, wet, dirt protection and the requirement of food medical and health, the market of dynamic weigher will be larger.Have a strong impact on the efficiency of existing go-on-go scale because belt speed is limited, and this programme can realize quick check weighing by weigh ramp angle and material loading speed of adjustment.
If 2 weigh slideway tilt but sensor levels place, F=H+G × cos
2a+ f × sinA, F seriously affect by uncertain random friction.Visible, due to LOAD CELLS design Impact direction and slideway length direction (i.e. material traffic direction) at right angle setting of weighing, friction force is made not produce component at LOAD CELLS design Impact direction, completely eliminate the interference of friction force to weighing data, the dynamic weight of LOAD CELLS exports not by the impact of material material, material state, friction factor.
3, because LOAD CELLS design Impact direction and rigidity are weighed slideway length direction (i.e. material traffic direction) at right angle setting, make LOAD CELLS experience weight of material to export with as far as possible large electric signal at the whole components on slideway normal of weighing, be more conducive to instrument controlling of sampling.Effective output that this case LOAD CELLS experiences weight of material is GcosA.If weighed, slideway tilts but sensor levels placement, and this effectively exports is then Gcos
2a.Visible, this case output is 1/cosA times of horizontal positioned.
If 4 LOAD CELLS horizontal positioned, inclination angle is larger, cos
2a is less.The gap that the weight of material electric signal of 2 schemes exports is larger.This case can solve slideway of weighing and to tilt but numerous needs that LOAD CELLS horizontal positioned scheme can't resolve are weighed greatly the problem of Slide-way tilt angle, the material dynamic weighing of as higher in: friction factor or thickness, need the dynamic weighing of high temperature or the cryogenic object passed through at a high speed, production line high transfer rate requires, the dynamic weighing of horizontal direction limited space on production line.
5, due to LOAD CELLS design Impact direction and slideway length direction (i.e. material traffic direction) at right angle setting of weighing, material effective weight G is exported in load cell signal, i.e. F=(H+G) cosA in the ratio of 1:1 with the invalid H that conducts oneself with dignity of physical construction of slideway of weighing.And slideway of weighing tilts but F=H+G × cos in sensor levels placement schemes
2a+ f × sinA, G and H presses cos
2the ratio of A:1 exports.Visible, this case relative mechanical structure invalid signals, useful signal accounting is larger, lower to the requirement of instrument and resolution thereof.
6, Weighing control instrument using the static accurate weight of actual material to the ratio of this material test result of weighing of Weighing control instrument display when weighing landing on slideway as correction factor or using the weight of its special calibrating object to the ratio of test result of weighing of this demarcation thing Weighing control instrument display when weighing landing on slideway as correction factor, make the weight of the slideway of weighing tilted value of weighing more accurate.Inclination angle detection device measuring angle need not be adopted to show that coefficient revises the weight output valve of Weighing control instrument by formula scales again.
7, the feeding slideway being arranged at slideway feed end front portion of weighing guarantee from the material of production line pay-off the direction of motion of the discharge end of feeding slideway become and the length direction of slideway of weighing consistent, perpendicular to the interference of the impulsive force weighing results of slideway of weighing during elimination material loading, substantially increase weighing precision.
Accompanying drawing explanation
Fig. 1 is the structure composition schematic perspective view of this programme; In Fig. 1: 1-weighs slideway; 2-LOAD CELLS or force snesor; 3-bracing frame; 4-Weighing control instrument; 5-material; 6-instrument bearing; 7-feeding slideway; 10-production line pay-off.
Fig. 2 is the structural front view of this programme; Fig. 3 is the force analysis schematic diagram of LOAD CELLS; Fig. 4 is the force analysis schematic diagram of slideway of weighing; Fig. 5 is the force analysis schematic diagram of material on slideway;
Fig. 6 is prior art automatic weight go-on-go scale structural representation.In figure: 11-head roll and Timing Belt; 12-scale object table face; 13-feed belt; 14-follower rollers; 15-Weighing control instrument; 16-scale object table frame; 17-LOAD CELLS; 18-scale body bracing frame; 19-drive motor.
Embodiment
As shown in Figure 1-2, a kind of electronic measurement of checking weight weigh is weighed unit, it comprises bracing frame 3 and is fixedly installed at least one LOAD CELLS 2 on bracing frame 3, LOAD CELLS 2 is fixedly installed slideway 1 of weighing, weigh slideway 1 length direction horizontal by an angle A, 0 ° of < A < 90 °; LOAD CELLS 2 bearing end is rigidly connected with slideway 1 of weighing and LOAD CELLS 2 designs that to carry Impact direction vertical with slideway 1 length direction of weighing; Described LOAD CELLS 2 makes gravity not produce component in LOAD CELLS 2 side facet normal direction for also meeting during rectangle LOAD CELLS.Also be provided with the Weighing control instrument 4 be electrically connected with LOAD CELLS 2.The rigid body that described slideway 1 hard wear-resistant material of weighing is made, the Baltimore groove in both ends open or plane or bobbin body shape structure.As the trough body structure that: slideway 1 of weighing can be upper and LOAD CELLS 2 connecting elements of reprocessing after stainless steel bending; Also can be wear-resisting steel plate welded structure; It can also be the material that the friction factor such as tempered glass are very little.Weigh and slideway 1 is provided with ball, roller, roller with material contact portion or does waviness or be evenly covered with concaveconvex shape, or cover the lubricant such as grease, hairbrush, increase the material property passed through to reduce friction factor.
Weighing, slideway 1 front is provided with independently feeding slideway 7.The feeding slideway 7 be arranged at before slideway 1 feed end of weighing guarantee from the material 5 of production line pay-off 10 the direction of motion of the discharge end of feeding slideway 7 become and the lubricating substance direction of slideway 1 of weighing consistent.Concrete relative position should meet impulsive disturbance large to output generation of weighing when not making material 5 slide into slideway 1 of weighing from feeding slideway 7.
Feeding slideway 7 is the rigid bodies made with hard wear-resistant material; Feeding slideway 7 discharging opening is suitable and keep gap with slideway 1 charging aperture of weighing, and the discharging direction of feeding slideway 7 discharging opening is parallel with slideway 1 lubricating substance direction of weighing, and the chute surface of feeding slideway 7 is slightly higher than the chute surface of slideway 1 of weighing.Feeding slideway 7 can adopt same material, same section structure, same lubricant method with slideway 1 of weighing; Feeding slideway 7 also according to material 5 special shape, can adopt different section profile, finally at the profile that discharging opening becomes and slideway 1 of weighing is same; Feeding slideway 7 can with slideway 1 different length of weighing; Feeding slideway 7 can be rigidly attached on bracing frame 3, also can be rigidly attached on production line pay-off 10, can also be independent support; Feeding slideway 7 discharge end has spacing relative with the feed end of slideway 1 of weighing, do not connect, do not contact, feeding slideway 7 can be plane slideway, also can be curved surface slideway, its discharge end profile should be consistent with slideway 1 feed end of weighing, its profile within slideway 1 feed end profile of weighing, should can not have joining.
Described LOAD CELLS 2 is shearing force LOAD CELLS or single-point balance beam sensor.Below the slideway 1 of weighing generally being arranged on rigidity.According to chute width, LOAD CELLS 2 must have certain thickness, can anti-side-sway, unbalance loading.
According to material 5 to the friction factor of slideway 1 of weighing and production line requirement, slideway 1 of weighing meets with level A(in a certain angle needs the material 5 of dynamic weighing weighing on slideway 1 to slide, the modes such as rolling are parallel to slideway 1 of weighing and pass through), carrier is slid past as what be weighed material 5, slideway 1 of weighing is rigidly connected with the bearing end of LOAD CELLS or force snesor 2, and it is vertical to make LOAD CELLS 2 design Impact direction and rigidity slideway 1 length direction (i.e. material traffic direction) of weighing, stiff end and the bracing frame 3 of LOAD CELLS 2 are rigidly connected, bracing frame 3 is rigidity, its position is not moved because material 5 passes through, LOAD CELLS 2 is electrically connected with Weighing control instrument 4 by cable.
The response speed of the design consideration material size of slideway 1 length of weighing, travelling speed and Weighing control instrument 4 and determining.Generally, 1.5 times that table top material movement direction length is greater than the most length direction of material are measured.The angle of slideway 1 and the level of weighing and bracing frame 3 pairs of LOAD CELLS 2 install the angle determination principle of bottom surface: can according to the feeding speed of the arrangement of production line rate, space, production scene, Weighing control instrument 4 range and sampling time and resolution, material 5 and weigh friction factor, feed mechanism between slideway 1 and feeding slideway 7, material 5 shapes of materials, warm and humid state, Weighing control instrument 4 need material 5 weigh on slideway 1 accelerate, at the uniform velocity, deceleration etc. requires and determines, angle can from being greater than 0 ° to close to 90 °; Also automatic angle mechanism can be made, on-the-spot artificial or Lookup protocol.
The installed surface of the bearing end of LOAD CELLS 2 may be vertical with design Impact direction, also may be parallel; The installed surface of stiff end also may be vertical with design Impact direction, also may be parallel.Weigh slideway 1 and bracing frame 3 coordinates mounting means with the concrete of LOAD CELLS 2, can adjust according to the concrete LOAD CELLS 2 adopted.The LOAD CELLS 2 that this programme embodiment adopts is that the installed surface of bearing end is parallel with the installed surface of stiff end and all vertical with design Impact direction.
To weigh area or material 5 Negotiation speed for expanding weigh range or material 5, weigh slideway 1 area or load capacity must be strengthened, LOAD CELLS 2 is 1 or 2 or 4 or more even numbers, they must be rigidly connected with slideway 1 of weighing, their design Impact direction all must be vertical with slideway 1 length direction of weighing, and their installation bottom surface must be parallel.
Weighing control instrument 4 is dynamic continuous weighting in material 5 landing process.During equipment debugging, first to its static weighing Calibration, then operation state performance is revised: using the accurate weight of actual material 5 to the ratio of this material 5 test result of weighing that Weighing control instrument 4 shows when weighing landing on slideway 1 as correction factor or using the weight of its special calibrating thing to the ratio of this demarcation thing test result of weighing that Weighing control instrument 4 shows when weighing landing on slideway 1 as correction factor.Weighing control instrument 4 can be independently, or A/D module adds the array configurations such as display module, also can be embedded in in other equipment, or control display system a set of with other collaborative share, can also be PC etc.
Fried instant noodle equipment, high 1.2 meters, 90 bags per minute, belt speed 50 ms/min, to be weighed material 5 be actual weight 200g bagged instant noodle product, plastics package, be of a size of 120mm*160mm.1.5 times of principles of the most length direction of material are greater than by metering table top material movement direction length, rectangle, the high trough body structure for 20mm in shelves limit that slideway bottom surface is the long 400mm of wide 200mm is made in the bending of design 2mm thick stainless steel, heavily about 1.5kg, as the slideway 1 of weighing that the smooth landing of material 5 is weighed; Making rectangle that slideway bottom surface is the long 300mm of wide 180mm, shelves limit high with the bending of 2mm thick stainless steel is again the trough body structure of 20mm, heavily about 1kg, becomes as the material 5 that production line is fallen into the feeding slideway 7 that velocity reversal is parallel to the rigidity of slideway 1 of weighing; The long 130mm of aluminum PW2D(, wide 25mm, the high 15mm of the 12kg range that Middle face under slideway 1 cell body of weighing is produced by bolt and German HBM company, deadweight 250g) bearing end of single point weighing cell 2 is rigidly connected, and it is vertical with slideway 1 length direction of weighing that LOAD CELLS 2 designs Impact direction; Weigh slideway 1 length direction (i.e. 400mm long side direction) and level of rigidity is 30 ° of angles; Feeding slideway 7 is rigidly connected to bracing frame 3, and slideway 1 is parallel with weighing for length direction (i.e. 300mm edge direction); Feeding slideway 7 discharging opening distance slideway 1 charging aperture of weighing is 1mm, and its bottom surface exceeds the slideway 1 bottom surface 1mm that weighs; LOAD CELLS 2(or force snesor) stiff end keeps static by being rigidly connected with the mounting plane in 30 ° of angles with level of bolt and bracing frame 3, bracing frame 3 at weighing process; LOAD CELLS 2 electrical connection can carry out the Weighing control instrument 4 of correction factor setting.
See Fig. 3, Fig. 4, Fig. 5, material 5 is when weighing on slideway 1, and the force analysis of LOAD CELLS 2, slideway 1 of weighing, material 5 is as follows.Wherein:
Weigh slideway 1 couple of horizontal line angle: A
Material 5 weight: G
Material 5 is to slideway 1 normal pressure: the N=GcosA that weighs
Material 5 friction force: f
Slideway 1 of weighing is conducted oneself with dignity: H
Slideway 1 of weighing is added to the pressure that LOAD CELLS 2 designs loading direction: F=N+HcosA
=(H+G)cosA
The voltage signal U=(F/S that sensor 2 exports) * K*E=(H+G) cosA*K*E/S.
S: sensor 2 rated load
K: sensor 2 sensitivity coefficient
E: sensor 2 driving voltage
Weighing control instrument 4 selects the PLAC-5000 instrument of Shandong Cytyc Corp., and bracing frame 3 is weldment, and there is foot bolt at heavy 40kg(such as scene, and bracing frame 3 can significantly loss of weight).When being connected with production line, machinery and instrument first carry out static demarcating with standard weight to this metering units after installing and connecting.Then, carry out dynamic corrections: demarcation instant noodles are weighed up static weight, then allow it directly fall into feeding slideway 7 from production line, then slip into slideway 1 of weighing, and slide along slideway 1 of weighing.Weighing control instrument 4 demonstrates gravimetric value, and static weight is drawn correction factor divided by this test value, namely correction factor feeding Weighing control instrument 4 be can be used for the dynamic go-on-go of instant noodles weight.Result is as follows: the standard deviation of the 20 bag continuous weightings of this programme is 0.1g, peak-to-peak value error is 0.3g.And adopt existing belt-type go-on-go scale weighing unit, instant noodles are by horizontal conveying belt material loading, adopt same PLAC-5000 Weighing control instrument and digital filter program, same HBM LOAD CELLS, Haber Si company of Switzerland belt, Japan Oriental company brshless DC motor, the U.S. produces Timing Belt, 2 cylinders crossed through dynamic balance treatment, general-purpose balance body structure, same static demarcating and dynamic test corrections; The manufacturing costs such as motor, belt, cylinder, scale body are about 3800 yuan of RMB; During test, its best result is standard deviation is that 0.14g, peak-to-peak value error are at 0.5g.Visible, this programme, significantly reducing under manufacturing cost and maintenance cost, also significantly improves dynamic weighing precision, significantly can also improve the grade of dust-proof, waterproof, the healthy prevention.
Claims (8)
1. the electronic measurement of a checking weight weigh is weighed unit, it comprises bracing frame and is fixedly installed at least one LOAD CELLS on bracing frame, LOAD CELLS is fixedly installed slideway of weighing, it is characterized in that weighing slideway material landing direction horizontal by an angle A, 0 ° of < A < 90 °; LOAD CELLS bearing end be rigidly connected with slideway of weighing and LOAD CELLS design to carry Impact direction vertical with slideway length direction of weighing; Also be provided with the Weighing control instrument be electrically connected with LOAD CELLS.
2. the electronic measurement of checking weight weigh according to claim 1 is weighed unit, the rigid body that slideway hard wear-resistant material of weighing described in it is characterized in that is made, the Baltimore groove in both ends open or plane or bobbin body shape structure.
3. the electronic measurement of checking weight weigh according to claim 1 is weighed unit, it is characterized in that weighing and slideway is provided with ball, roller, roller with material contact portion or does waviness or be evenly covered with concaveconvex shape, or cover grease, hairbrush lubricant.
4. the electronic measurement of checking weight weigh according to claim 1 is weighed unit, it is characterized in that slideway front of weighing is provided with feeding slideway.
5. the electronic measurement of checking weight weigh according to claim 4 is weighed unit, it is characterized in that feeding slideway is the rigid body made with hard wear-resistant material; Feeding slideway discharging opening is suitable and keep gap with slideway charging aperture of weighing, and the discharging direction of feeding slideway discharging opening is parallel with slideway lubricating substance direction of weighing.
6. the electronic measurement of checking weight weigh according to claim 1 is weighed unit, it is characterized in that described LOAD CELLS is shearing force LOAD CELLS or single-point balance beam sensor.
7. the electronic measurement of checking weight weigh according to claim 1 is weighed unit, it is characterized in that LOAD CELLS is 1 or 2 or 4 or more even number.
8. the electronic measurement of checking weight weigh according to claim 1 is weighed unit, also must meet and make gravity not produce component in LOAD CELLS side facet normal direction when it is characterized in that described LOAD CELLS is rectangle LOAD CELLS.
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| CN108472187A (en) * | 2016-12-20 | 2018-08-31 | 测量用具有限公司 | Scale system and method |
| TWI677666B (en) * | 2015-10-23 | 2019-11-21 | 林昱志 | Slide scale module |
| CN110987134A (en) * | 2019-11-21 | 2020-04-10 | 贵州电网有限责任公司 | Gas cylinder weight detection device and detection method thereof |
| CN112520375A (en) * | 2020-11-03 | 2021-03-19 | 安徽理工大学 | Rotary wheel type coal gangue identification device |
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| TWI677666B (en) * | 2015-10-23 | 2019-11-21 | 林昱志 | Slide scale module |
| CN106081507A (en) * | 2016-07-11 | 2016-11-09 | 平湖市品耀机器自动化有限公司 | A kind of feed table of ironware |
| CN106081507B (en) * | 2016-07-11 | 2019-04-09 | 平湖市品耀机器自动化有限公司 | A kind of feed table of ironware |
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| CN106289418B (en) * | 2016-08-04 | 2019-03-08 | 河南工业大学 | One koji tail chute type bulk material flow meter |
| CN108472187A (en) * | 2016-12-20 | 2018-08-31 | 测量用具有限公司 | Scale system and method |
| CN106628841A (en) * | 2017-01-24 | 2017-05-10 | 广东省生物工程研究所（广州甘蔗糖业研究所） | Dynamic metering chain plate conveyor with two-dimensional weighing function |
| CN106628841B (en) * | 2017-01-24 | 2022-07-12 | 广东省生物工程研究所（广州甘蔗糖业研究所） | Dynamic metering chain scraper conveyor with two-dimensional weighing function |
| CN110987134A (en) * | 2019-11-21 | 2020-04-10 | 贵州电网有限责任公司 | Gas cylinder weight detection device and detection method thereof |
| CN112520375A (en) * | 2020-11-03 | 2021-03-19 | 安徽理工大学 | Rotary wheel type coal gangue identification device |
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