CN104501923A - Check-weigher - Google Patents
Check-weigher Download PDFInfo
- Publication number
- CN104501923A CN104501923A CN201510022774.9A CN201510022774A CN104501923A CN 104501923 A CN104501923 A CN 104501923A CN 201510022774 A CN201510022774 A CN 201510022774A CN 104501923 A CN104501923 A CN 104501923A
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- China
- Prior art keywords
- weighing
- slideway
- bracing frame
- feeding
- checking weight
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Abstract
The invention discloses a check-weigher. The check-weigher comprises a feeding device and a horizontally arranged weighing slide-way, and a weighing sensor is arranged below the weighing slide-way; the check-weigher further comprises a weighing control meter electrically connected with the weighing sensor; the weighing slide-way is a rigid passage, wherein the surface of the rigid passage in contact with material is a smooth groove, the axial line direction of the groove is arranged horizontally, and the axial line direction of the groove is consistent with the material running direction.
Description
Technical field
This programme relates to a kind of metering units and adopts horizontal inertial to weigh the checking weight weigh of slideway, is mainly used in the automatic dynamic weight detecting of interrupted lump material.
Background technology
The automatic dynamic weight detecting of interrupted lump material refers to that dynamic weighing detects incessantly in weighed object operational process.Lump material includes but not limited to hard ware material, softer, elastic material, bagged material, case dress material, bottled material, box-packed material, lashing materials, serial connection material, binding material.
Checking weight weigh refers to that the dynamic auto electronic weight adopting LOAD CELLS detects scale, most employing Belt Conveying material, be also called go-on-go scale, sorting scale, screening scale, sort scale, heavily examine scale, classification scale, multipass sort scale, weight label scale etc., mainly for the production of line or packaging line (also can unit use), dynamically online Dynamic Weighting, monitoring, record, FEEDBACK CONTROL, subsides weight or price tag are carried out to product weight, also can by preset weight range product is sorted, classification, rejecting.
Existing checking weight weigh structure is primarily of following four parts compositions: electrical control gear, being claimed the preposition material loading feeder (containing sending power belt to) of article, Weighing unit (containing power belt of weighing), rejecting grading plant (containing rejecting power belt).By the external power such as drive motor, Timing Belt driving force band action roller shaft cylinder, belt is driven to transmit mechanism's abbreviation power belt of material again.The Weighing unit of checking weight weigh is primarily of Weighing control instrument, LOAD CELLS, horizontal weighing platform composition.Namely the horizontal weighing platform of existing checking weight weigh computation weigh unit is power belt.This power belt generally contains: head roll, follower rollers, the feed belt around on head roll and follower rollers, Timing Belt, drive motor (its cable is connected with the external world), and fixing or hold up cylinder, motor, feed belt and material and connect the bracket of LOAD CELLS at lower rigid.This power belt not only transmits material but also serve as horizontal weighing platform.Material is transmitted by power belt; While transmitting, weight of material is delivered to LOAD CELLS together with the weight of power belt, then by Weighing control instrument output weight numerical value.So this horizontal weighing platform or power belt are also called power belt of weighing.
There are the following problems always for above-mentioned power belt of weighing: vibrations that the rotatable parts unbalance mass,s such as drive motor, Timing Belt, feed belt, cylinder cause or beat and have a strong impact on weighing precision; Drive motor cable affects the free of Weighing unit with extraneous connection and then affects weighing precision; The inert weight of physical construction own also affects weighing precision; The high-accuracy mechanical processing cost of running gear have impact on economy, the maintenance cost of checking weight weigh weighing unit; The speed limit decision of each rotary part go-on-go efficiency cannot significantly improve; Rotary part is difficult to realize the usable range that high-grade protection and food medical and health require seriously to constrain go-on-go scale weighing unit.Visible, the rotating moving part of weighing in power belt has had a strong impact on weighing precision, economy, the practicality of checking weight weigh.
Summary of the invention
This patent, for the various interference of power belt to weighing data of weighing of existing checking weight weigh computation weigh unit, proposes a kind of metering units employing level and to weigh the checking weight weigh of slideway.
The technical measures that this programme adopts are: a kind of checking weight weigh, and it comprises material loading feeder and horizontally disposed slideway of weighing, below slideway of weighing, be provided with LOAD CELLS; Also comprise the Weighing control instrument be electrically connected with LOAD CELLS; The slideway that it is characterized in that weighing is exactly one is smooth groove with material surface of contact, groove surface axis direction is horizontal positioned and the shape rigid crossing consistent with material traffic direction.
The concrete feature of this programme also has, and material loading feeder is arranged on the first bracing frame; Weigh installation of slide track on the 3rd bracing frame.
The material feed rate of material loading feeder should meet: υ > [2 × g × (L
1+ L
2+ L
3) × μ]
1/2.
Wherein: υ is material speed; G is local gravitational acceleration; L
1for the length of slideway of weighing; L
2for the length of feeding slideway; L
3for material with the surface of the ramps contact longest dimension in all directions; μ is the friction factor of material to weigh slideway and feeding slideway.
At material loading feeder with weigh between slideway and be provided with horizontally disposed feeding slideway, feeding installation of slide track is on the second bracing frame, and feeding slideway is lower than material loading feeder and higher than slideway of weighing.Feeding slideway is one is smooth groove with material surface of contact, recess axis direction is horizontal positioned and the rigid crossing consistent with material traffic direction.Feeding slideway inner races can also arrange feeding baffle plate, make material enter Weighing unit by certain attitude.Described feeding slideway is same cross section, same material, same lubricant method with slideway of weighing.
3rd bracing frame is provided with photoelectric detection system.
Also be provided with rejecting grading plant, reject grading plant and be arranged on the 4th bracing frame, reject grading plant lower than slideway of weighing.
Also comprise the material-receiving device being arranged at and rejecting grading plant both sides or rear end.
Material loading feeder, feeding slideway, slideway of weighing do not contact each other with rejecting grading plant, their material run surface parallel relatively, maintain spacing, reduce highly successively.
The beneficial effect of this programme is:
1, this programme power belt of weighing that slideway of weighing replaces on metering units is used as to transmit the platform that material and level weigh simultaneously.Weighing unit adopts slideway of weighing to replace and to weigh power belt, eliminates head roll, follower rollers, belt, bearing, motor, Timing Belt, and power belt of weighing is reduced to a smooth horizontal weighing platform.Utilize the inertia of material, slip over less energy loss slideway of weighing weighing on slideway, and in this process dynamic weighing, thoroughly solve the dynamic weighing precision problem of checking weight weigh.Concrete effect is as follows: the rotary part that power belt that (1) scale body is not weighed is intrinsic, and would not produce scale running body amount of unbalance and vibrations interference thereof, also eliminate drive motor cable and contact interference with extraneous, weighing precision can improve greatly.
(2) there is no running gear, significantly reduce manufacturing cost.
(3) impost of this body structure alleviates greatly, can greatly be improved by the ratio claiming the weight of material to account for transducer range.
(4) do not have moving component to be easy to realize the high-grade water of metering units, wet, dirt protection and the requirement of food medical and health, meet the dynamic weighing requirement of more occasions, the market of dynamic weigher will be larger.
(5) have a strong impact on the efficiency of existing go-on-go scale because belt speed is limited, and this programme just need only can realize quick check weighing by adjustment material loading speed.
2, between the dynamic level weighing platform (i.e. level weigh slideway) of material loading feeder and Weighing unit, feeding slideway is increased, eliminate material between two transition time impulsive disturbance that LOAD CELLS is caused, substantially increase weighing precision.Because, article two, the zone of transition between feed belt is exactly the zone of transition between two circular arcs, the seam that one is greater than diameter length is had between circular arc and the upper summit of circular arc, namely material will produce overshoot response when crossing over the seam between material loading feeder and the power belt of Weighing, has a strong impact on the output of LOAD CELLS.One of affected factor of former checking weight weigh scheme precision that Here it is.
And if this programme removes feeding slideway, allow material directly directly rush to slideway of weighing from material loading feeder, then can export LOAD CELLS and bring very large interference.The belt roller of material loading feeder and level weigh slideway flat board between, be in fact exactly that a circular arc is to a straight line.At their seam crossing, cylinder will walk downward with belt, and the flat board of slideway of weighing is motionless, so material will be made not to be stuck just needs flatbed horizontal position as far as possible toward moving down, even lower than cylinder axis level; But as the flat board of slideway of weighing, so high drop will bring great impact to LOAD CELLS; This is conflict.So, to increase a feeding slideway relative with slideway level of weighing at material loading feeder between slideway and can effectively address this problem with weighing.That is, first cushioned the impact of that drop by feeding slideway, more reposefully material is served slideway of weighing.
Accompanying drawing explanation
Fig. 1 is the structure composition schematic perspective view of this programme; Fig. 2 is the structural front view of this programme; Fig. 3 is the structure vertical view of this programme; Fig. 4 is prior art checking weight weigh structural front view.Fig. 5 is prior art checking weight weigh structure vertical view.
In figure: 1-material loading feeder; 2-feeding baffle plate; 3--feeding slideway; 4-photoelectric detection system; 5-weighs slideway; 6-LOAD CELLS; 7-rejects grading plant; The right material blocking rod of 8-; The left material blocking rod of 9-; 10-material; 11-first bracing frame; 12-second bracing frame; 13-the 3rd bracing frame; 14-the 4th bracing frame; 15-Weighing control instrument; 16-electrical control gear; 17-material-receiving device.18-power belt (that is: horizontal weighing platform, is also called power belt of weighing); The feed belt of 21-material loading feeder; 23-head roll and Timing Belt; 24-bracket; The feed belt of 25-metering units; 26-follower rollers; 30-drive motor; 31-brace table.
Embodiment
As Figure 1-3, a kind of checking weight weigh, it comprises material loading feeder 1 and horizontally disposed slideway 5 of weighing, below slideway 5 of weighing, be provided with LOAD CELLS 6; Also comprise the Weighing control instrument 15 be electrically connected with LOAD CELLS 6; Slideway 5 of weighing is exactly one is smooth groove with material surface of contact, recess axis direction is horizontal positioned and the rigid crossing consistent with material traffic direction.Material loading feeder 1 is arranged on the first bracing frame 11; Slideway 5 of weighing is arranged on the 3rd bracing frame 13; Feeding slideway 3 exports higher than slideway 5 of weighing.At material loading feeder 1 with weigh between slideway 5 and be provided with horizontally disposed feeding slideway 3, feeding slideway 3 is arranged on the second bracing frame 12, and feeding slideway 3 is lower than material loading feeder 1 and higher than slideway 5 of weighing.3rd bracing frame 13 is provided with photoelectric detection system 4; Also be provided with and reject grading plant 7, reject grading plant 7 and be arranged on the 4th bracing frame 14, reject grading plant 7 lower than slideway 5 of weighing.Also comprise the material-receiving device 17 being arranged at and rejecting grading plant 7 both sides.Material loading feeder 1, feeding slideway 3, slideway 5 of weighing do not contact each other with rejecting grading plant 7, their material run surface parallel relatively, have Small Distance, corresponding reduction highly successively.
Be used as to transmit with level slideway 5 power belt 18 of weighing replaced on metering units of weighing the platform that material 10 and level weigh simultaneously.The level that metering units adopts is weighed slideway 5, with the external world without any being electrically connected; This level weighs slideway 5 directly as horizontal weighing platform 18, it is enough little to the friction energy-dissipating of material 10, material does not rely on exterior power and drives, only relies on inertia just to can slide past this level to weigh slideway 5, and Weighing control instrument 15 can complete dynamic weighing in this process.
Be applied to Drugs Packaging Production Line with checking weight weigh and detect a kind of Key works Drug packing weight, object is that the product exceeding desired value weight ± 2% is rejected, and overweight puts together, and ultralight puts together, and the clearance of weight in claimed range is passed through.Drugs Packaging Production Line, high 1.0 meters, 100 bags per minute, belt speed 100 ms/min, to be weighed material 10 be target weight 100g cartridge carton medicine, be of a size of 100mm × 60mm × 15mm.
1.5 times of principles of the most length direction of material are greater than by metering table top material 10 direction of motion length, slideway 5 of weighing is made with the thick 304 mirror face stainless steel bendings of 2mm, the trough body structure that the rectangle that shape is the long 250mm of the wide 200mm in bottom surface, shelves limit height are 20mm, heavily about 1kg, slides the slideway 5 of weighing of weighing as material 10; Feeding slideway 3 is made again with the thick 304 mirror face stainless steel bendings of 2mm, for the wide 190mm in bottom surface, be the trough body structure of 20mm along the rectangle of the long 130mm of material line of travel, shelves limit height, heavily about 0.5kg, becomes the material 10 from production line or material loading feeder 1 into velocity reversal and is parallel to horizontally disposed slideway 5 of weighing.Material loading feeder 1 and rejecting grading plant 7 still adopt power belt and the related device of existing checking weight weigh.
The long 130mm of aluminum PW2D(, wide 25mm, the high 15mm of the 7.2kg range that Middle face under slideway 5 cell body of weighing is produced by bolt and German HBM company, deadweight 250g) bearing end of single point weighing cell 6 is rigidly connected, and it is vertical that LOAD CELLS 6 designs Impact direction and level slideway 5 length direction (referring to along material line of travel) of weighing; Feeding slideway 3 is rigidly connected to the second bracing frame 12, and slideway 5 is parallel with weighing for length direction (i.e. 130mm edge direction); Feeding slideway 3 discharging opening horizontal range slideway 5 charging aperture of weighing is 1mm, and its bottom surface exceeds the slideway 5 bottom surface 0.5mm that weighs; LOAD CELLS 6(or force snesor) stiff end is rigidly connected by bolt and the 3rd bracing frame 13 mounting plane, the 3rd bracing frame 13 keeps static at weighing process; Photoelectric detection system 4 is arranged on the 3rd bracing frame 13, and photoelectric detection system 4 is optional, when adopting the pattern by weighing platform on weight threshold identification material, can not want photoelectric detection system 4.
LOAD CELLS 6 is electrically connected Weighing control instrument 15 with photoelectric detection system 4, the weight electric signal of the material 10 that LOAD CELLS 6 is experienced processes through Weighing control instrument 15 and shows numerical value, Weighing control instrument 15 exports to electrical control gear 16 gravimetric value, and electrical control gear 16 controls left material blocking rod 9 and right material blocking rod 8 is let pass to this material 10 or rejects classification through time delay.Electrical control gear 16 respectively with material loading feeder 1, reject grading plant 7, Weighing control instrument 15, photoelectric detection system 4 be connected.Its controls material loading feeder 1 or rejects the belt speed of grading plant 7, also judges material 10 speed and position according to each photoelectric detection system 4, the gravimetric value of material 10 that Weighing control instrument 15 provides carrys out left material blocking rod 9 and the right material blocking rod 8 that delays time to control rejects grading plant 7.
Weighing control instrument 15 selects the PLAC-5000 instrument of Shandong Cytyc Corp., and all bracing frames are weldment, and there is foot bolt at counterpoise 40kg(such as scene, and bracing frame can significantly loss of weight; Also the first bracing frame 11, second bracing frame 12, the 4th bracing frame 14 can be linked to be an entirety).When being connected with production line, machinery and instrument are first carried out static demarcating with standard weight to this metering units, are then carried out dynamic corrections after installing and connecting.Just can be used for the dynamic go-on-go of box packed medicine weight afterwards.
Result is as follows: with actual weight be the cartridge carton medicine of 100 ± 0.01g as material 10, the standard deviation of the 20 bag continuous weightings of this programme is 0.1g, peak-to-peak value error is 0.3g.
Contrast with the weigh go-on-go scale of power belt 18 of existing employing: adopt and to test same material loading feeder 1 with slideway check weighing of weighing and reject grading plant 7, adopt same PLAC-5000 Weighing control instrument and digital filter program, Weighing unit adopts same HBM LOAD CELLS, Haber Si company of Switzerland belt, Japan Oriental company brshless DC motor, and the U.S. produces Timing Belt, 2 cylinders crossed through dynamic balance treatment, general-purpose balance body structures; Same static demarcating and dynamic test correction; The manufacturing costs such as motor, belt, cylinder, scale body are about 3800 yuans.Visible, the primary structure of the go-on-go scale of prior art is: material loading feeder 1, power belt 18 and rejecting grading plant 7.During test, with actual weight be the cartridge carton medicine of 100 ± 0.01g as material 10, the best result of its 20 bag continuous weighting is standard deviation is that 0.13g, peak-to-peak value error are at 0.5g.Visible, this programme power belt 18 of weighing that horizontally disposed slideway 5 of weighing replaces on metering units is used as to transmit the platform that material and level weigh simultaneously, be aided with feeding slideway 3 again, significantly reducing under manufacturing cost and maintenance cost, significantly improve dynamic weighing precision, significantly can also improve the grade of dust-proof, waterproof, the healthy prevention.
Claims (9)
1. a checking weight weigh, it comprises material loading feeder and horizontally disposed slideway of weighing, below slideway of weighing, be provided with LOAD CELLS; Also comprise the Weighing control instrument be electrically connected with LOAD CELLS; The slideway that it is characterized in that weighing is exactly one is smooth groove with material surface of contact, recess axis direction is horizontal positioned and the rigid crossing consistent with material traffic direction.
2. checking weight weigh according to claim 1, is characterized in that material loading feeder is arranged on the first bracing frame; Weigh installation of slide track on the 3rd bracing frame.
3. checking weight weigh according to claim 1, it is characterized in that at material loading feeder and weigh between slideway and be provided with horizontally disposed feeding slideway, feeding installation of slide track is on the second bracing frame, and feeding slideway is lower than material loading feeder and higher than slideway of weighing.
4. checking weight weigh according to claim 2, is characterized in that feeding slideway be one is smooth groove with material surface of contact, recess axis direction is horizontal positioned and the rigid crossing consistent with material traffic direction.
5. checking weight weigh according to claim 1, is characterized in that also being provided with rejecting grading plant, rejects grading plant and is arranged on the 4th bracing frame, rejects grading plant lower than slideway of weighing.
6. checking weight weigh according to claim 5, is characterized in that also comprising the material-receiving device being arranged at and rejecting grading plant both sides or rear end.
7. checking weight weigh according to claim 5, is characterized in that material loading feeder, feeding slideway, slideway of weighing does not contact each other with rejecting grading plant, their material run surface parallel relatively, maintain spacing, reduce highly successively.
8. checking weight weigh according to claim 1, is characterized in that the material feed rate of material loading feeder should meet: υ > [2 × g × (L
1+ L
2+ L
3) × μ]
1/2;
Wherein: υ is material speed;
G is local gravitational acceleration;
L
1for the length of slideway of weighing;
L
2for the length of feeding slideway;
L
3for material with the surface of the ramps contact longest dimension in all directions;
μ is the friction factor of material to weigh slideway and feeding slideway.
9. checking weight weigh according to claim 2, is characterized in that being provided with photoelectric detection system on the 3rd bracing frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510022774.9A CN104501923A (en) | 2015-01-16 | 2015-01-16 | Check-weigher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510022774.9A CN104501923A (en) | 2015-01-16 | 2015-01-16 | Check-weigher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104501923A true CN104501923A (en) | 2015-04-08 |
Family
ID=52943346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510022774.9A Pending CN104501923A (en) | 2015-01-16 | 2015-01-16 | Check-weigher |
Country Status (1)
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105150015A (en) * | 2015-06-30 | 2015-12-16 | 昆山市太祥科技电子有限公司 | Plate processing system |
| CN105181089A (en) * | 2015-07-14 | 2015-12-23 | 河南科技大学 | Tobacco online weighing device |
| CN107144329A (en) * | 2017-06-30 | 2017-09-08 | 汤小牛 | Linear contact lay weighing device |
| CN107782425A (en) * | 2017-09-25 | 2018-03-09 | 安徽中马橡塑制品有限公司 | A kind of molding film automatic weighing system |
| CN108225522A (en) * | 2018-02-07 | 2018-06-29 | 福州大学 | A kind of logistics dynamic weigher and its weighing method |
| CN108489580A (en) * | 2018-04-01 | 2018-09-04 | 苏州梅克兰检测服务有限公司 | A kind of liquid crystal display Weight detecting device |
| CN109029653A (en) * | 2018-10-29 | 2018-12-18 | 山东西泰克仪器有限公司 | Check weighing scale with material issuance device |
| CN109211377A (en) * | 2018-08-21 | 2019-01-15 | 合肥天业智能装备有限公司 | Cray purchases live sampling statistics scale |
| CN109425416A (en) * | 2017-08-28 | 2019-03-05 | 山东新北洋信息技术股份有限公司 | A kind of dynamic weigher and its conveyor belt speed method of adjustment and device |
| CN114184269A (en) * | 2021-11-23 | 2022-03-15 | 东风柳州汽车有限公司 | Multilayer frame transmission assembly line and multilayer frame weight detection device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105150015B (en) * | 2015-06-30 | 2019-01-22 | 江苏林阳木业科技有限公司 | A kind of sheet processing system |
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| CN105181089A (en) * | 2015-07-14 | 2015-12-23 | 河南科技大学 | Tobacco online weighing device |
| CN105181089B (en) * | 2015-07-14 | 2018-06-29 | 河南科技大学 | A kind of tobacco leaf online weighing device |
| CN107144329A (en) * | 2017-06-30 | 2017-09-08 | 汤小牛 | Linear contact lay weighing device |
| CN107144329B (en) * | 2017-06-30 | 2023-03-03 | 山东西泰克仪器有限公司 | Line contact weighing device |
| CN109425416B (en) * | 2017-08-28 | 2021-01-19 | 山东新北洋信息技术股份有限公司 | Dynamic weighing device and method and device for adjusting speed of conveyor belt of dynamic weighing device |
| CN109425416A (en) * | 2017-08-28 | 2019-03-05 | 山东新北洋信息技术股份有限公司 | A kind of dynamic weigher and its conveyor belt speed method of adjustment and device |
| CN107782425A (en) * | 2017-09-25 | 2018-03-09 | 安徽中马橡塑制品有限公司 | A kind of molding film automatic weighing system |
| CN108225522A (en) * | 2018-02-07 | 2018-06-29 | 福州大学 | A kind of logistics dynamic weigher and its weighing method |
| CN108489580A (en) * | 2018-04-01 | 2018-09-04 | 苏州梅克兰检测服务有限公司 | A kind of liquid crystal display Weight detecting device |
| CN109211377A (en) * | 2018-08-21 | 2019-01-15 | 合肥天业智能装备有限公司 | Cray purchases live sampling statistics scale |
| CN109029653A (en) * | 2018-10-29 | 2018-12-18 | 山东西泰克仪器有限公司 | Check weighing scale with material issuance device |
| CN114184269A (en) * | 2021-11-23 | 2022-03-15 | 东风柳州汽车有限公司 | Multilayer frame transmission assembly line and multilayer frame weight detection device thereof |
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