CN112191551A - Dynamic goods weighing method based on weighing trolley on cross belt sorting machine - Google Patents
Dynamic goods weighing method based on weighing trolley on cross belt sorting machine Download PDFInfo
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- CN112191551A CN112191551A CN202011155839.4A CN202011155839A CN112191551A CN 112191551 A CN112191551 A CN 112191551A CN 202011155839 A CN202011155839 A CN 202011155839A CN 112191551 A CN112191551 A CN 112191551A
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- 238000005303 weighing Methods 0.000 title claims abstract description 133
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000001133 acceleration Effects 0.000 claims abstract description 16
- 230000005484 gravity Effects 0.000 claims abstract description 8
- 230000003068 static effect Effects 0.000 abstract description 2
- 238000012856 packing Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/16—Sorting according to weight
- B07C5/18—Sorting according to weight using a single stationary weighing mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/16—Sorting according to weight
- B07C5/28—Sorting according to weight using electrical control means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
- B07C5/362—Separating or distributor mechanisms
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Abstract
The invention discloses a dynamic weighing method for goods based on a weighing trolley on a cross belt sorting machine. The conventional peeling and weighing method based on the static weight of the sorting trolley has lower precision. The invention is as follows: firstly, selecting a weighing point on a track of the sorting machine. Step two, operating the sorting machine; when the sorting trolley moves to the weighing point, the weighing sensor on the sorting trolley detects the pressure applied to the sorting trolley. Thirdly, the sorting machine is used for sorting the goods, and when the sorting trolley with the goods runs to a weighing point, the weighing sensor on the sorting trolley detects the pressure applied to the sorting trolley. And calculating the weight of the goods on the sorting trolley. The sorting trolley is respectively weighed at the same position when empty and carrying goods, so that the characteristic that the sorting trolley is basically consistent in bumping condition at the same position is utilized, a calculation expression for eliminating the influence of gravity acceleration and weighing result in the vertical direction of the goods is provided, and the influence of bumping on the weighing precision of the goods is obviously reduced.
Description
Technical Field
The invention belongs to the technical field of logistics sorting, and particularly relates to a dynamic weighing method for goods of an annular sorting machine based on a weighing trolley.
Background
The sorting trolley in the existing sorting machine with the annular crossed belt only has the sorting function and does not have the weighing function; this makes it necessary for the sorting machine with endless crossed belts to be equipped with a plurality of upper packing tables with a fast dynamic weighing function; the packaging table needs to be divided into three-section type conveying belts, and the cost of a single packaging table reaches tens of thousands of yuan. Furthermore, conventional debarking weighing methods based on the static weight of the sorting carriages are less accurate due to the fact that the sorting carriages have a certain pitch during their operation, which in turn generates accelerations of unpredictable magnitude in the vertical direction, and since the weight of the sorting carriages (about 20kg) is generally significantly greater than the weight of the individual packages (generally less than 3 kg).
Disclosure of Invention
The invention aims to provide a sorting trolley with a weighing function.
The first goods dynamic weighing method based on the weighing trolley on the cross belt sorting machine uses the sorting trolley with the weighing function; the dynamic weighing method comprises the following specific steps:
step one, selecting a weighing point on a track of the sorting machine.
Step two, operating the sorting machine; when the sorting trolley moves to the weighing point, the weighing sensor on the sorting trolley detects the pressure G applied to the sorting trolley1。
Thirdly, sorting the goods by using a sorting machine, and when the sorting trolley with the goods runs to a weighing point, detecting the pressure G applied to the sorting trolley by a weighing sensor on the sorting trolleys. Calculating the weight of the goods on the sorting trolley
Wherein g is the acceleration of gravity.
The second goods dynamic weighing method based on the weighing trolley on the cross belt sorting machine uses the sorting trolley with the weighing function; the dynamic weighing method comprises the following specific steps:
step one, detecting the pressure G applied to the sorting trolley by a weighing sensor on the sorting trolley0(ii) a And selecting a weighing point on a track of the sorting machine.
Step two, operating the sorting machine; when the sorting trolley moves to the weighing point, the weighing sensor on the sorting trolley detects the pressure G applied to the sorting trolley1。
Thirdly, sorting the goods by using a sorting machine, and when the sorting trolley with the goods runs to a weighing point, detecting the pressure G applied to the sorting trolley by a weighing sensor on the sorting trolleys. Calculating the weight of the goods on the sorting trolley
Wherein g is the acceleration of gravity.
Preferably, the weighing points are selected on a straight track between the upper and lower wrapping and blanking tables.
Preferably, the photoelectric sensor is used to confirm whether the sorting trolley reaches the weighing point.
Preferably, a plurality of key points are selected in the step one; each weighing point can obtain a weight of the goods, and the average value of the weights of the goods measured by the weighing points is taken as the final weight m of the goods.
Preferably, the sorting cart includes a conveyor section, a saddle section, and a load cell. The conveyor part is arranged on the carriage part through a weighing sensor; the saddle section can circulate along the track of the endless sorter with the conveyor section and load cells. The weighing sensor is capable of weighing out the total weight of the conveyor section and the cargo carried on the conveyor section.
Preferably, the load cell is a single-point load cell.
Preferably, the weighing sensors are multiple; a plurality of load cells are provided at different locations on top of the seat portion.
Preferably, the weighing sensors are all horizontally arranged, the top surface of one end is connected with the conveyor part, and the bottom surface of the other end is connected with the saddle part.
The invention has the following beneficial effects:
1. the sorting trolley is respectively weighed at the same position when empty and carrying goods, so that the characteristic that the sorting trolley is basically consistent in bumping condition at the same position is utilized, a calculation expression for eliminating the influence of gravity acceleration and weighing result in the vertical direction of the goods is provided, and the influence of bumping on the weighing precision of the goods is obviously reduced.
2. The sorting trolley can automatically weigh the sorted goods in the sorting process, and the link of weighing the goods in manual collection is omitted.
3. According to the invention, two weighing sensors are arranged in the center, whether the goods are in the center position of the top surface of the sorting trolley can be judged according to the weight difference detected by the two weighing sensors, and then the goods are conveyed to the center position of the top surface of the sorting trolley by using the conveyor part, so that the stability and reliability of conveying are avoided.
Drawings
Fig. 1 is a schematic view of a sorting cart used in the present invention.
Detailed Description
The present invention is further explained below.
Example 1
As shown in figure 1, a goods dynamic weighing method based on a weighing trolley on a cross belt sorting machine uses a sorting trolley with a weighing function; the sorting trolley comprises a conveyor part 1, a saddle part 2 and a load cell 3. The conveyor part 1 is mounted on the saddle part 2 by a load cell 3; the saddle section 2 can travel with the conveyor section 1 and the load cell 3 in a circulating manner along the track of the endless sorting machine. The load cell 3 is capable of weighing out the total weight of the conveyor part 1 and the goods carried on the conveyor part 1. Due to the jolts of the sorting carriages during operation on the endless track, an unpredictable vertical acceleration of the conveyor section 1 and the goods occurs during operation.
The weighing sensor 3 adopts a single-point type weighing sensor 3 and is of a cantilever beam type structure. The weighing sensors 3 are all horizontally arranged; the top surface of one end of the load cell 3 is bolted to the conveyor portion 1, and the bottom surface of the other end is bolted to the seat portion 2. The weighing sensor 3 is connected with the controller of the cross belt sorting machine of the electric roller in the conveyor part 1.
The method for dynamically weighing the goods of the annular sorting machine based on the weighing trolley comprises the following steps:
the method comprises the following steps that firstly, a plurality of sorting trolleys are mounted on an annular guide rail of a cross belt sorting machine, and one point is selected as a weighing point on a straight track between an upper packing platform and a lower blanking platform; set up photoelectric sensor at the point of weighing, set up the contact that corresponds with photoelectric sensor on the letter sorting dolly for the letter sorting dolly can detect self and reachs the balance point. The weighing point is arranged on a straight track
Secondly, operating each sorting trolley according to the standard speed (travelling speed in normal sorting) of the cross belt sorting machine; when a sorting trolley travels to the weighing point, the weighing sensor 3 on the sorting trolley measures the weight G of the conveyor part 1 on the corresponding sorting trolley1(i.e. the sum of the pressure of the conveyor section 1 against the two load cells). At this time, since the sorting trolley is running and has a certain bump, the acceleration in the vertical direction exists, so G1Determined by the combined effect of gravitational acceleration and vertical acceleration of the sorting carriages effected by the jolts, which is generally not equal to the gravitational force G of the conveyor section 10。
Thirdly, sorting the goods by using an annular sorting machine, and when the sorting trolley with the goods runs to a weighing point, measuring the sum G of the weights of the conveyor part 1 and the goods on the corresponding sorting trolley by using a weighing sensor 3 on the sorting trolleys. The controller automatically calculates the weight of the goods on the sorting trolley
Wherein g is gravity acceleration and takes 9.8m/s2。
Because the bumping states of the sorting trolleys passing through the same position on the circular track are basically consistent every time when the cross belt sorting machine stably runs, the vertical accelerations generated by bumping of the same sorting trolley at the same position on the circular track are also basically consistent, and the total weight measured at the same position is subtracted from the weight of the conveyor part 1, so that the error of the bumping on the detected weight of the goods can be greatly reduced, and the detection error of the weight of the goods is controlled within an allowable range.
Example 2
The sorting cart used in this example was the same as in example 1.
A method for dynamically weighing goods of an annular sorting machine based on a weighing trolley comprises the following steps:
step one, under the condition that each sorting trolley is kept, the weighing sensor 3 measures the weight G of the conveyor part 1 on the corresponding sorting trolley0(i.e. the weight force experienced by the conveyor section 1, in N).
Secondly, selecting a point on a straight track between an upper packing platform and a lower packing platform as a weighing point; photoelectric sensor sets up at the point of weighing, sets up the contact that corresponds with photoelectric sensor on the letter sorting dolly for the letter sorting dolly can detect self and reach photoelectric sensor position.
Thirdly, each sorting trolley is operated according to the standard speed of the annular sorting machine, and when the sorting trolley moves to a weighing point, a weighing sensor 3 on the sorting trolley measures the weight G of the corresponding conveyor part 1 on the sorting trolley1。
Fourthly, sorting the goods by using an annular sorting machine, and when the sorting trolley with the goods runs to a weighing point, measuring the weight G of the corresponding conveyor part 1 on the sorting trolley by using a weighing sensor 3 on the sorting trolleys. The controller automatically calculates the weight of the goods on the sorting trolley
Wherein g is gravity acceleration and takes 9.8m/s2。
In the embodiment, the bumping of the goods is further consideredThe influence of the acceleration in the vertical direction on the detection result; by using the feature that the vertical acceleration of the sorting carriages remains substantially constant while passing through the same point (i.e. by using the same point)
) And the weight of the goods on the sorting trolley can be more accurately obtained.
Example 3
This example differs from example 1 or 2 in that: selecting a plurality of weighing points on the annular track; each weighing point can obtain a weight of the goods, and the average value of the weights of the goods measured by the weighing points is taken as the final weight m of the goods.
Example 4
This example differs from example 1 or 2 in that: the weighing cells 3 are two in total. Two load cells 3 are centrally disposed on both sides of the top of the seat portion 2. The weight of the load carried on the conveyor part 1 enables the two load cells 3 to be bent and deformed, so that the load cells 3 output the weight of the load being conveyed. In addition, can judge through the difference between the weight that two weighing sensor 3 detected whether the goods put at the central point of letter sorting dolly top surface, and then use conveyer part 1 to carry the goods to the intermediate position of letter sorting dolly top surface, avoid guaranteeing the reliable and stable of carrying.
Claims (9)
1. A goods dynamic weighing method based on a weighing trolley on a cross belt sorting machine; the method is characterized in that: using a sorting trolley with a weighing function; the dynamic weighing method comprises the following specific steps:
step one, selecting a weighing point on a track of a sorting machine;
step two, operating the sorting machine; when the sorting trolley moves to the weighing point, the weighing sensor on the sorting trolley detects the pressure G applied to the sorting trolley1；
Thirdly, sorting the goods by using a sorting machine, and when the sorting trolley with the goods runs to a weighing point, detecting the pressure G applied to the sorting trolley by a weighing sensor on the sorting trolleys(ii) a For counting the goods on sorting trolleysWeight (D)
Wherein g is the acceleration of gravity.
2. A goods dynamic weighing method based on a weighing trolley on a cross belt sorting machine; the method is characterized in that: using a sorting trolley with a weighing function; the dynamic weighing method comprises the following specific steps:
step one, detecting the pressure G applied to the sorting trolley by a weighing sensor on the sorting trolley0(ii) a Selecting a weighing point on a track of the sorting machine;
step two, operating the sorting machine; when the sorting trolley moves to the weighing point, the weighing sensor on the sorting trolley detects the pressure G applied to the sorting trolley1；
Thirdly, sorting the goods by using a sorting machine, and when the sorting trolley with the goods runs to a weighing point, detecting the pressure G applied to the sorting trolley by a weighing sensor on the sorting trolleys(ii) a Calculating the weight of the goods on the sorting trolley
Wherein g is the acceleration of gravity.
3. The method for dynamically weighing goods based on the weighing trolley on the cross-belt sorting machine as claimed in claim 1 or 2, characterized in that: the weighing points are selected on a straight track between the upper bag platform and the lower bag platform.
4. The method for dynamically weighing goods based on the weighing trolley on the cross-belt sorting machine as claimed in claim 1 or 2, characterized in that: whether the sorting trolley reaches the weighing point is confirmed through a photoelectric sensor.
5. The method for dynamically weighing goods based on the weighing trolley on the cross-belt sorting machine as claimed in claim 1 or 2, characterized in that: in the first step, a plurality of weighing points are selected; each weighing point can obtain a weight of the goods, and the average value of the weights of the goods measured by the weighing points is taken as the final weight m of the goods.
6. The method for dynamically weighing goods based on the weighing trolley on the cross-belt sorting machine as claimed in claim 1 or 2, characterized in that: the sorting trolley comprises a conveyor part, a saddle part and a weighing sensor; the conveyor part is arranged on the carriage part through a weighing sensor; the saddle part can carry the conveyor part and the weighing sensor to circularly travel along the track of the annular sorting machine; the weighing sensor is capable of weighing out the total weight of the conveyor section and the cargo carried on the conveyor section.
7. The method for dynamically weighing goods based on the weighing trolley on the cross-belt sorting machine as claimed in claim 1 or 2, characterized in that: the weighing sensor adopts a single-point type weighing sensor.
8. The method for dynamically weighing goods based on the weighing trolley on the cross-belt sorting machine as claimed in claim 1 or 2, characterized in that: the weighing sensors are multiple; a plurality of load cells are provided at different locations on top of the seat portion.
9. The method for dynamically weighing goods based on the weighing trolley on the cross-belt sorting machine as claimed in claim 1 or 2, characterized in that: the weighing sensors are all horizontally arranged, the top surface of one end of each weighing sensor is connected with the conveyor part, and the bottom surface of the other end of each weighing sensor is connected with the saddle part.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011155839.4A CN112191551A (en) | 2020-10-26 | 2020-10-26 | Dynamic goods weighing method based on weighing trolley on cross belt sorting machine |
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| CN202011155839.4A CN112191551A (en) | 2020-10-26 | 2020-10-26 | Dynamic goods weighing method based on weighing trolley on cross belt sorting machine |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6137066A (en) * | 1996-12-18 | 2000-10-24 | Vagagenturen Wanelid Ab | Weighing device |
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| CN210304595U (en) * | 2019-05-31 | 2020-04-14 | 南京禹智智能科技有限公司 | Intelligence commodity circulation letter sorting system is with power dolly of weighing |
| CN111085445A (en) * | 2018-10-23 | 2020-05-01 | 无锡品冠物联科技有限公司 | Intelligent sorting trolley |
| CN111579035A (en) * | 2020-04-10 | 2020-08-25 | 彩虹集团有限公司 | TFT glass BOD procedure rapid dynamic weighing system and weighing method |
-
2020
- 2020-10-26 CN CN202011155839.4A patent/CN112191551A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6137066A (en) * | 1996-12-18 | 2000-10-24 | Vagagenturen Wanelid Ab | Weighing device |
| CN1982856A (en) * | 2006-04-24 | 2007-06-20 | 江承学 | Front dynamically-measuring protecting balance of automobile |
| CN103791992A (en) * | 2014-02-25 | 2014-05-14 | 重庆大唐科技股份有限公司 | Device and method for improving axle load precision during dynamic vehicle following |
| CN111085445A (en) * | 2018-10-23 | 2020-05-01 | 无锡品冠物联科技有限公司 | Intelligent sorting trolley |
| CN210304595U (en) * | 2019-05-31 | 2020-04-14 | 南京禹智智能科技有限公司 | Intelligence commodity circulation letter sorting system is with power dolly of weighing |
| CN111579035A (en) * | 2020-04-10 | 2020-08-25 | 彩虹集团有限公司 | TFT glass BOD procedure rapid dynamic weighing system and weighing method |
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| 李青 等: "TFT-LCD液晶基板玻璃生产过程中的在线式称重方式初步研究", 《电气自动化》 * |
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Address after: 310051 floor 17, No. 258, Xihe Road, Xixing street, Binjiang District, Hangzhou City, Zhejiang Province Applicant after: HANGZHOU CONFIRMWARE TECHNOLOGY Co.,Ltd. Address before: 2 / F, building 2, no.9-1, binwen Road, Xixing street, Binjiang District, Hangzhou City, Zhejiang Province 310051 Applicant before: HANGZHOU CONFIRMWARE TECHNOLOGY Co.,Ltd. |
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Application publication date: 20210108 |
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