CN109335049A

CN109335049A - A kind of electronic scale, automatically weighing packaging stamp system and its working method

Info

Publication number: CN109335049A
Application number: CN201811151908.7A
Authority: CN
Inventors: 李昭华; 李长河; 谢伟东; 陈锦; 尹佃辉; 陈德旭; 侯亚丽; 张彦彬
Original assignee: Qingdao University of Technology
Current assignee: Qingdao University of Technology
Priority date: 2018-09-29
Filing date: 2018-09-29
Publication date: 2019-02-15

Abstract

The invention discloses a kind of electronic scale, automatic weighing packaging stamp system and its working methods.Wherein, automatic weighing packaging stamp system, comprising: electronic scale；Fully-automatic packaging stamp device starts after the enabling signal for receiving extraneous triggering；The fully-automatic packaging stamp device includes closing device and stamp device；The closing device, the packaging bag for being used to accommodate predetermined position article of having weighed is sealed, and the packaging bag after sealing is pushed to stamp device；The stamp device is used for: being received unit price, weight and the pricing information of the article that identification device transmission comes, is generated two-dimension code label；The sticking one side of two-dimension code label band is contacted with packaging bag, to stick in packaging bag appearance, completes stamp.

Description

A kind of electronic scale, automatically weighing packaging stamp system and its working method

Technical field

The invention belongs to field of electronic device more particularly to a kind of electronic scales, automatic weighing packaging stamp system and its work Make method.

Background technique

Under current social overall situation, although retailing industry occupies dominant position, the pressure of existence is in electronics quotient It is growing day by day in the case where business eruptive growth and intensive innovation, while as the appearance of unmanned supermarket is to existing Shang Chao enterprise Impact is more strong, therefore the innovation of retailing industry develops the influence for having dominance to it.But still exist at present People encounter queuing hardly possible in buying interim packaging group product, lack interim packaging group in weigh difficult problem and unmanned supermarket and produce Product sell this lacuna.

Weighing is the tool for measuring weight of object or quality.With the continuous hair of electronics industry and non-electrical quantity measurement technology Exhibition, weighing technology enter the electronic-weighing epoch.Using the electronic balance of electromagnetic principle, weighing precision is high and stablizes accurately. Existing electronic scale is the product of Modern Sensor Technology development, the development of electronic scale product and the need of domestic and international market It asks, the total development trend of electronic scale is miniaturization, modularization, integrated, intelligent；Its technical performance trend be rate it is high, Accuracy is high, stability is high, high reliablity；Its function tends to the control information for being Weighing and Non-control information is laid equal stress on " intelligence " function；Its application performance is intended to comprehensive and associativity.

For certain commercial electronic scales, it is also far from enough only to have weighing, valuation, display, a printing function, modern Business system also requires it that can provide various sales informations, and weighing is combined closely with management automation, make weighing, valuate, into Library, sales management integration, realize management automation.This requires electronic price computing scales to network with electronic computer, weighing System and computer system form a complete complex control system.In Industrial Weighing metering process or process flow, no Few weighing system it is also desirable to have composability, i.e. measurement range etc. can arbitrarily be set；Hardware can be according to certain Operating condition and environment make certain adjustment, and hardware capability develops to software direction；Software can modify by certain program and Extension；Different language and bar code can be used from instruction in inputoutput data, and can be with external control and data processing Equipment is communicated.

In the electronic product produced at present, in order to realize tracking and managing, there is a bar-code label in each process substantially. So so more label, it is desirable that largely manually mounted, and complete the scanning work of bar code, this is a kind of Very big waste.

Through retrieving, Zhou Baoqing et al. has invented a kind of electronic scale (patent No.: CN203893929U), real by various modules Existing multiple functions, including printing function, function of weighing etc..Data processing plate includes various chips, the inside in a kind of this electronic scale A kind of chip include real time data library module, it can be realized the data interaction and the function of Data Integration of multiple devices. And the module of data analysis is provided between cpu chip and interface module, communication protocol, data analysis module is deposited with FLASH Chip connection is stored up, the speed for improving electronic scale processing data can be greatly accelerated.Although this electronic scale accelerates at data The speed of reason, but link of weighing, there is still a need for manual identified, packaging seal pastes the functions such as code there is still a need for manually going to realize, can not solve Certainly manually the weighing time is long, and customer, which weighs, is lined up long, rare problem of weighing, and therefore, this electronic scale can not solve Shang Chao enterprise The rare problem of the multiple rows of team of people.

Liu Zhi is brave et al. to have invented a kind of barcode information managing printing electronic scale (patent No.: CN2743807), according to title Amount signal, merchandise news and real-time clock generate Transaction Information and send through bus to the Nonvolatile memory chip；Access is total The I/O interface of line is connected with the keyboard and information alert equipment；With microcontroller, flash chip, Nonvolatile memory core The address decoder that piece, clock chip and I/O interface are connected generates piece selected control signal under the control of the micro-controller；Connection Communication interface between microcontroller and printer.Although this electronic scale failure rate is low, convenient and flexible operation reduces production The manufacturing cost of product, but there is still a need for manually separating the base stock of label and facial tissue after bar code printing comes out in weighing process, and Adhesive surface is pasted onto packaging bag, the weighing time is virtually increased, increases cost of labor.Therefore, this electronic scale can not Satisfactory realization existing market obtains demand for electronic scale.

Zhou Baoqing et al. has invented a kind of double-screen electronic labeling scale (patent No.: CN207132967U), comprising: weighing system System, is fixed by screws on pedestal, pedestal is connected with finger-board, and control system, control system and title are provided in pedestal Weight system, printer, finger-board and light-emitting diode display are all connected with, and liquid crystal display and rotating upright post are located at the side of pedestal, are rotated Upright bar and base engagement are equipped with printer, are equipped with light-emitting diode display in rotating upright post, liquid crystal display is located at the top of rotating upright post Portion.Although this electronic scale, compared with traditional technology, rotating upright post can rotate, and installation and transportation are small in size, and transportation cost is low；It is logical It crosses and does not dismount the difficulty that upright bar meets curstomer's site installation machine, reduce the quality problems largely generated by installation error, still This electronic scale is conceived to the installation question of electronic scale, does not have for the functions such as packaging stamp of appearance during electronic scale weighing Substantive promotion, can not still solve that the customer's queuing time occurred in weighing process is long, difficult problem of weighing.

In conclusion there are manual identified commodity for existing electronic scale, weighing range of goods is limited, and stamp device and packet Assembling device separation and the slow-footed problem of stamp.

Summary of the invention

In order to solve the deficiencies in the prior art, the first object of the present invention is to provide a kind of electronic scale, and which employs images Intelligent identification technology reduces cost of labor, and it is limited to solve the problems, such as that ordinary electronic weighs type of merchandize.

A kind of electronic scale of the invention, comprising:

Weighing device is used to detect the weight of article to be measured；

Identification device is previously stored with images of items and its monovalent information in database；

The identification device is used for: it obtains item image information and is compared with images of items pre-stored in database, It identifies article kind, and then obtains the monovalent information of article；

The weight information of article is received, and matched unit price is multiplied, and obtains the price of article.

Further, the weighing device includes device for pre-positioning, weighing processor and weighing sensor；The pre-determined bit Device is used to article to be measured being fixed on predetermined position；The weighing sensor, for detecting the article to be measured of predeterminated position Weight and be sent to weighing processor.

Further, the weighing sensor is diplopore cantilever parallel girder strain gauge load cell.

The second object of the present invention is to provide a kind of automatic weighing packaging stamp system, and overall process realizes automatic knowledge Not, automatic sealing, automatic code-printing and automatic transportation enhance customer purchase pleasant sensation.

The automatic weighing packaging stamp system of one kind of the invention, comprising:

Electronic scale described above；

Fully-automatic packaging stamp device starts after the enabling signal for receiving extraneous triggering；

The fully-automatic packaging stamp device includes closing device and stamp device；The closing device, is used for pre- If the packaging bag for accommodating article of having weighed at position is sealed, and the packaging bag after sealing is pushed to stamp device；It is described Stamp device is used for: being received unit price, weight and the pricing information of the article that identification device transmission comes, is generated two-dimension code label；It will The sticking one side of two-dimension code label band is contacted with packaging bag, to stick in packaging bag appearance, completes stamp.

Further, the closing device includes the first press strip and the second press strip；Second press strip is fire-bar.

Further, second press strip is connected with temperature control equipment.

Further, the stamp device is made of thermosensitive adhesive printer and label peeling mechanism, and the temperature-sensitive is not Dry glue printer is for printing two-dimension code label；Label peeling mechanism is used to make using the tension of paper base stock and the face of label paper Paper separation.

Further, the label peeling mechanism includes: mainboard, and driving shaft, asessory shaft, first are equipped on the mainboard Guide wheel and the second guide wheel；

It is provided with label folder on the driving shaft, is used to that label paper to be fixed；The driving shaft and stepping electricity Machine is connected；The stepper motor provides power for driving shaft, and driving shaft provides the torque of the rotation of label paper, inside stepper motor Mechanism is self-locking and fixation of the label folder to label paper, realizes to label paper fixation and tensioning；

The upper left side of asessory shaft is arranged in first guide wheel, is fixed with coiled label paper on the asessory shaft, and first Guide wheel and the second guide wheel are connected by label paper；When tag motion is to the top of the second guide wheel, pass through the fixation of label folder With driving shaft to the drawing of label paper, label paper itself shape is made to have a certain degree, the angle formed by label paper itself, mark Label are peeled away with label paper at angle maximum value automatically automatically, realize automatically stripping for label.

Further, the automatic weighing packaging stamp system of one kind of the invention, further includes transport device, the transport device Including the first partial gear, the second partial gear, first gear, second gear, third gear, linear push plate, linear push Bar and rack gear；The first gear, second gear and third gear three are intermeshed, the first partial gear and third gear Coaxially connected, both the second partial gear and first gear are coaxially connected；One end of linear push rod is connected with rack gear, the other end It is connected with linear push plate；

After sealing, the first partial gear is engaged with rack, and linear push rod connects with rack movement with linear push rod The linear push plate connect releases packaging bag and carries out stamp, and subsequent second partial gear is engaged with rack, and linear push plate returns to original Position.

The third object of the present invention is to provide a kind of working method of automatic weighing packaging stamp system, and overall process is realized Automatic identification, automatic sealing, automatic code-printing and automatic transportation enhance customer purchase pleasant sensation.

The working method of the automatic weighing packaging stamp system of one kind of the invention, comprising:

Using electronic scale described above, unit price, weight and the pricing information of article to be measured are obtained, and is sent to stamp dress It sets；

After the enabling signal for receiving extraneous triggering, closing device and the starting of stamp device；

Closing device accommodates the packaging bag of article of having weighed to predetermined position and seals, and by the packaging bag after sealing Push to stamp device；

The unit price of the article received, weight and pricing information are generated two-dimension code label by stamp device；By two dimensional code mark The sticking one side of label tape is contacted with packaging bag, to stick in packaging bag appearance, completes stamp.

Compared with prior art, the beneficial effects of the present invention are:

(1) present invention employs digital image recognition technology, reduce cost of labor, solve ordinary electronic and weigh quotient Kind class finiteness problem；

(2) the present invention overcomes conditional electronic scale manual identifieds, and weighing commodity are limited, stamp device and packing device point From the problems such as stamp speed is slow.

(3) overall process of the present invention realizes automatic identification, automatic sealing, automatic code-printing and automatic transportation, enhances customer Shopping pleasant sensation.

(4) fully-automatic packaging stamp device of the invention will be packed in conjunction with stamp, and sufficiently combination utilizes respective characteristic, real Quick and precise symmetrical amount commodity price stamps are showed.

(5) fully-automatic packaging stamp device of the invention starts after the enabling signal for receiving extraneous triggering；External world touching Whether the enabling signal of hair is bought by customer is free as trigger signal, and the human nature service of customer purchase is provided.

Detailed description of the invention

The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.

Fig. 1 is the axonometric drawing of automatic weighing packaging stamp overall system architecture of the invention；

Fig. 2 is the main view of automatic weighing packaging stamp overall system architecture of the invention；

Fig. 3 is the overall structure figure of weighing device of the invention；

Fig. 4 is the overall structure figure of identification device of the present invention；

Fig. 5 is the side view of closing device embodiment of the invention；

Fig. 6 is the front view of closing device embodiment of the invention；

Fig. 7 is the axonometric drawing of transport device of the invention；

Fig. 8 is the axonometric drawing of printing mechanism for stripping of the invention；

Fig. 9 is the stress working principle of strain force sensor；

Figure 10 is the circuit operation principle of strain force sensor；

Figure 11 is the flow chart that single-chip microcontroller controls motor rotation.

Wherein:

I weighing device；I -1 control panel；I -2 display screen；I -3 weighing sensor；I -4 first device for pre-positioning；I -5 scale Body top plate；I -6 scale side plate；I -7 second device for pre-positioning；I -8 scale side plate；

II identification device；II -1 first camera；II -2 second camera；

III closing device；III -1 first clamping device；III -2 first transmission gear；III -3 second clamping device；III -4 Three clamping devices；III -5 the 4th gear；III -6 the 5th gear；III -7 first stepper motor；III -8 first axle；III -9 second transmission Gear；The clamping of III -10 left swing arm；III -11 detachable silica gel press strip；III -12 calandria pressing plate；The clamping of III -13 right swing arm；Ⅲ- 14 third transmission gears；III -15 second axis；III -16 pin；

IV transport device；IV -1 first partial gear；IV -2 second partial gear；IV -3 second stepper motor；Ⅳ- 4 second stepper motor seats；IV -5 first gear；IV -6 linear push plate；IV -7 linear push rod；IV -8 rack gear；IV -9 second gear； IV -10 third gear；

V stamp device；V -1 second guide wheel；V -2 third stepper motor；V -3 third stepping motor cabinet；V -4 label Folder；V -5 driving shaft；V -6 mainboard；V -7 asessory shaft；V -8 first guide wheel；V -9 thermosensitive adhesive printer；V -10 mark Sign paper.

Specific embodiment

It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

Embodiment one

A kind of electronic scale is present embodiments provided, is included at least:

(1) weighing device is used to detect the weight of article to be measured；

(2) identification device is previously stored with images of items and its monovalent information in database；

In specific implementation, the weighing device includes device for pre-positioning, weighing processor and weighing sensor；It is described pre- Positioning device is used to article to be measured being fixed on predetermined position；The weighing sensor, for detecting the to be measured of predeterminated position The weight of article is simultaneously sent to weighing processor.

Wherein, lasso can be used to realize pre-determined bit in device for pre-positioning.

In specific implementation, the weighing sensor is diplopore cantilever parallel girder strain gauge load cell.

The characteristics of diplopore cantilever parallel girder strain gauge load cell, is: precision height, easy processing, simple and compact for structure, anti- Unbalance loading ability is strong, intrinsic frequency is high.The stress working principle of strain force sensor is as shown in Figure 9.

By on the force sensitive elastic element of strain gauge adhesion to stress, when elastic element stress deforms, foil gauge Corresponding strain is generated, resistance variations are converted to.Foil gauge is connected into electric bridge as shown in Figure 10, resistance variations caused by power will Measured object can be obtained by measuring the numerical value of output voltage, then by conversion in the voltage change for being converted to measuring circuit Weight.

Working strain gauge is connect on four arms of electric bridge, is involved in mechanically deform, exist together a temperature field, and temperature influences mutual It offsets, voltage output high sensitivity.

It should be noted that the weighing sensor of other forms principle can also be used to realize in weighing sensor.

The identification device of the present embodiment is mainly made of the first camera, second camera and the electronic component of inside, After customer selects commodity, the opening that commodity bundle packs is gathered, designated position, first camera and described second are put into Camera work, acquisition claim the image of the article of required weighing on body, by carrying out likelihood ratio with the image prestored in database It is right, it obtains weighing article kind, and then export the unit price for obtaining weighing article.

Embodiment two

A kind of automatic weighing packaging stamp system is present embodiments provided, overall process realizes automatic identification, automatic sealing package Mouth, automatic code-printing and automatic transportation enhance customer purchase pleasant sensation.

As depicted in figs. 1 and 2, the automatic weighing packaging stamp system of one kind of the present embodiment, includes at least: weighing device I, Identification device II, closing device III and stamp device V.

Wherein, both closing device III and stamp device V composition fully-automatic packaging stamp device, fully-automatic packaging stamp Device starts after the enabling signal for receiving extraneous triggering；

Closing device, the packaging bag for being used to accommodate predetermined position article of having weighed are sealed, and will be after sealing Packaging bag push to stamp device；

Stamp device is used for: being received unit price, weight and the pricing information of the article that identification device transmission comes, is generated two dimensional code Label；The sticking one side of two-dimension code label band is contacted with packaging bag, to stick in packaging bag appearance, completes stamp.

As shown in figure 3, the weighing device I of the present embodiment is mainly by control panel I -1, display screen I -2, weighing sensor I - 3, the first device for pre-positioning I -4, scale body top plate I -5, scale side plate I -6, the second device for pre-positioning I -7, scale side plate I -8, title Weight processor and the electronic component of inside are constituted.

Wherein, weighing processor is respectively connected with control panel I -1, display screen I -2 and weighing sensor I -3；

Weighing sensor I -3, display screen I -2 and control panel I -1 complete weighing display effect, the weighing and sensing jointly Device I -3 selects diplopore cantilever parallel girder strain gauge load cell.Its feature is: precision height, easy processing, structure are simply tight It gathers, offset load resistance is strong, intrinsic frequency is high.

As shown in figure 4, the identification device II of the present embodiment mainly by the first camera II -1, second camera II -2 and Internal electronic component is constituted, and after customer selects commodity, the opening that commodity bundle packs is gathered, and is put into designated position, and first Camera II -1 and second camera II -2 work, and acquisition claims the image of the article of required weighing on body, by in database The image prestored carries out likelihood ratio pair, obtains weighing article kind, and then export the unit price for obtaining weighing article.

First camera II -1, second camera II -2 of the present embodiment are located at the top of fuselage, are fixed by screws in In rack, weighing sensor, weighing processor, AD conversion module are mounted on fuselage interior by being welded into integrated circuit board, show Display screen is fixed by screws on scale body, and scale body is fixed by screws on fuselage.

First camera II -1, second camera II -2 combine the identification for carrying out shape and color with respective processor And then confirm type of merchandize, the weighing of commodity is completed using sensor technology and microcomputer, the calculating and display of price are fast Speed completes commodity and weighs process.

In specific implementation, identification device for obtain item image information and with article figure pre-stored in database As comparing, article kind is identified, and then obtain the monovalent information of article；

Closing device is further illustrated with reference to the accompanying drawing:

Heat sealing or tape seal or other existing sealing forms can be used to realize in closing device.

Below by taking heat sealing as an example:

Specifically, closing device includes the first press strip and the second press strip；Second press strip is fire-bar.

Wherein, detachable silica gel press strip can be used to realize in the first press strip；

Second press strip is connected with temperature control equipment.

It is as shown in Figure 5 and Figure 6 a kind of embodiment of closing device in the present embodiment,

Closing device III includes third clamping device III -4, third clamping device III -4 be used for the balance of pin III -16 with Fixed, the first clamping device III -1 and the second clamping device III -3 are located at first axle III -8 and III -15 front and back of the second axis simultaneously Balance and fixed effect are played, the first clamping device III -1, the second clamping device III -3, third clamping device III -4 lead to respectively It crosses screw to be fixed on scale body top plate I -5, transmission device is by the first transmission gear III -2, the 4th gear III -5, the 5th gear III - 6, the second transmission gear III -9, third transmission gear III -14 form, wherein the 5th gear III -6 is fixed on the first stepper motor On III -7, the 4th gear III -5 and the first transmission gear III -2 are interconnected by pin III -16 and play the role of transmission, and second Transmission gear III -9 and third transmission gear III -14 are separately fixed in first axle III -8 and the second axis III -15, wherein left swing arm Clamping III -10 is respectively fixed detachable silica gel press strip III -11 and calandria pressing plate III -12 with right swing arm clamping III -13 And driving.Wherein left swing arm clamping III -11 connect and associated movement with the second transmission gear III -9, right swing arm clamp III -13 and The connection of third transmission gear III -14 and associated movement, the two is by driving detachable silica gel press strip III -11 and calandria pressing plate III -12 swings the sealing completed to packaging bag.

Wherein, the first clamping device III -1, the second clamping device III -3 and third clamping device III -4 are existing structure, Such as clamping jaw structure.

Wherein inside calandria pressing plate III -12 by fire-bar, automation temperature control system, heat release hole, heat-conducting block and every Hot plate composition, wherein fire-bar surface is covered with the double-deck high temperature cloth, and wherein temperature control system can control the temperature of fire-bar simultaneously It is heated rapidly to tack temperature when sealing order is assigned, can stop heating after the completion of operation and room temperature is become by heat release hole, To reach energy-saving effect.

Since heating time is too long, easily there is breakage in sealing part, although heating time too short easy sealing is insecure, By temperature sensor, different sealing times can be adjusted at different heating temperatures.Detachable silica gel press strip III -11 and heating Body pressing plate III -12 plays the role of fusion sealing jointly.And there is silica gel press strip buffer function can reduce to device itself Impact caused by equipment loss, silica gel press strip is detachable, be easy to use.

Heating element heats after being powered, and makes fire-bar steep temperature rise, heating time is short, is adjusted to by temperature control system Required temperature obtains most suitable sealing temperature, and cooling system as needed is begun to cool, and cooling time is suitable for appropriately, efficiently Guarantee sealing effect, and required speed is adjusted to by speed regulation device, seals high-efficient.

It is several parameters in the closing device of the present embodiment below:

1. melt index

The high or low and sealing time of the temperature of heat sealing is too long in this example or too short can cause and plastics Sealing part occurs that damaged or sealing is insecure, and the melt index of this and plastics has much relations

Mi=600/t (1)

In formula:

Mi --- melt index unit: g/10min；

M --- material section quality (arithmetic mean of instantaneous value) unit: g；

T --- unit the time required to cutting material section: s；

2. the physical mechanical property tensile strength of plastics:

δ=p/ (b × d) (2)

In formula:

P --- maximal destruction load；Unit M Pa

B --- specimen width, unit: mm；

D --- sample thickness, unit: mm

3. elongation at break:

ε=(a-b)/10 × 100% (3)

In formula:

A --- sample gauge length, unit: mm；

B --- gauge length when sample fracture, unit: mm；

The stamp device of the present embodiment is made of thermosensitive adhesive printer and label peeling mechanism, the thermosensitive adhesive Printer is for printing two-dimension code label；Label peeling mechanism is used to make using the tension of paper the base stock and facial tissue point of label paper From.

Wherein, thermosensitive adhesive printer is mainly by electronic heater, print head, the composition such as shaft, the electronics heating Device utilizes under hot conditions, overlays on the metachromasia of the very short time on the hyaline membrane on light color material, realizes temperature-sensitive stamp, should Device realizes accurate, the clear stamp in very short time to packaging bag.

As shown in figure 8, printing a kind of embodiment of mechanism for stripping for label in the present invention comprising mainboard V -6, it is described Driving shaft V -5, asessory shaft V -7, the first guide wheel V -8 and the second guide wheel V -1 are installed on mainboard V -6；

It is provided with label folder V -4 on the driving shaft V -5, is used to that label paper V -10 to be fixed；The master Moving axis V -5 is connected with third stepper motor V -2；Third stepper motor V -2 is that driving shaft V -5 provides power, driving shaft V - 5 provide the torque of the rotation of label paper V -10, and the mechanism of V -2 inside of third stepper motor is self-locking and V -4 pair of label folder is marked The fixation of paper is signed, realizes fixation and tensioning to label paper；

First guide wheel V -8 be equipped with cylindrical rollers, be tensioned label paper, the second guide wheel V -1 can by with the first guide wheel Be used cooperatively, to utilize the toughness of label paper to realize label removing, thermosensitive adhesive printer V -9 can realize label paper Printing and counting, third stepper motor V -2 can provide power for driving shaft, and driving shaft V -5 can provide the rotation of label paper Torque, realize the tensioning of label paper, label folder V -4 has the function of that fixed labels paper and arrangement have used label paper.

Specifically, label folder is fixed on the driving shaft by the toughness of itself as in its reserved space.

Wherein, third stepper motor V -2 is mounted on third stepping motor cabinet V -3.

Each mechanism is described in detail below.

As shown in figure 8, the label printing stripping off device is fixed on mainboard V -6 by the way that coiled label paper to be placed on On asessory shaft V -7 realize the fixation of label paper roll, first guide wheel V -8 equipped with cylindrical roller is located at asessory shaft Upper left side utilizes driving shaft V -5 when label paper V -10 is connected by the roller of the first guide wheel V -8 with the second guide wheel V -1 On V -4 pair of label paper V -10 of label folder fixed function and the inside of third stepper motor V -2 mechanism it is self-locking, it is real The fixation and tensioning to label paper are showed, have got ready for the printing of thermosensitive adhesive printer V -9, work as thermosensitive adhesive When bar code on V -9 pair of label of printer prints, the sensor inside heat sensor can count the number of label, When tag motion is to the second V -1 top of guide wheel, pass through fixation and V -5 pair of label paper V-of driving shaft of label folder V -4 10 drawing makes V -10 itself shape of label paper have a certain degree, the angle formed by label paper V -10 itself, label meeting Automatically it is peeled away automatically with label paper V -10 at angle maximum value, realizes automatically stripping for label.

It is several parameters in the label printing stripping off device below:

1. tensile strength

In this embodiment, one is had between the paper between the first guide wheel and the second guide wheel and thermosensitive adhesive printer Fixed extruding and deformation, this influences whether the quality of printing, and causes the biggish deformation of label paper V -10, label paper V -10 The tensile strength of deformation and label paper V -10 has close relationship, and the physical model of tensile strength and research are as follows:

It is D in total deformation quantity of the paper of contact position, according to anti-when pressure of the paper by thermosensitive adhesive printer Known to the calculation formula of Zhang Qiangdu

S is tensile strength in formula, generally takes three effective digitals, and unit is KN/m2 or N/m2；F is average tensile power, single Position is N；L_WFor the cross-sectional area of paper, unit mm²。

2. breaking length

Or

In formula:

LB --- breaking length, unit km；

F --- average tensile power, unit N；

S --- tensile strength, unit K N/m；

G --- quantitative, g/m²；

LW --- specimen width, mm；

L1 --- initial length between clip, mm；

M --- the average quality of paper slip, mg between clip；

It, can be by the weight of the paper slip of measurement tensile strength itself if the quantitative fluctuation of sample is larger and precise requirements are higher Amount conversion breaking length.

3. tensile index

Or

In formula:

Y --- tensile index, Nm/g；

S --- tensile strength, KN/m；

G --- quantitative, g/m²

In the present embodiment, thermosensitive adhesive printer V -9 is during the printing to label paper, not due to temperature-sensitive Before the compression of V -9 pair of paper of dry glue printer reaches tensile strength, the deformation of paper is uniform, but when its pressure is answered When power reaches tensile strength, the deformation of paper just concentrates on the region of a certain weakness, and the section of paper will occur obviously Contraction (i.e. so-called necking phenomenon).The area of section of neck down portions section more original than paper is much smaller, therefore constriction Practical tensile stress on interface is more much bigger than the stress that original section calculates, so reasonable position should be arranged in we, with true The dynamics of the tension of V -10 pair of thermosensitive adhesive printer V -9 of label paper is determined within the scope of suitably.

In the present embodiment, the onward impulse of label paper V -9 is transmitted by driving shaft, and the torque of driving shaft is again by the Three stepper motors V -2 are transmitted by gear engagement.The angular displacement that third stepper motor V -2 rotates is by controlling signal Pulse number, and then control rotation angular displacement come what is realized, can reach the purpose of accurate positionin.Due to label paper V- 10 intermittent delivery needs higher precision, and the chip of the ULN2003 for having selected Darlington to display selects the as driving chip Three stepper motors V -2 are used as driving motor.

Since driving third stepper motor V -2 is it is critical that the rotation angle of motor will be accurately controlled, so It will be according to the direction for the information feedback judgement rotation that sensor obtains, to start corresponding rotation direction in programming Subprogram.The program for controlling positive and negative rotation uses corresponding model according to the sequence requirement of pulse respectively, and judges to break down When whether stop.

Stepper motor realizes the adjusting to motor speed by using the mode for becoming pulse width.In the mistake of programming Cheng Zhong should use the control mode for being created as the stepper motor of Controlling model, and model is stored in journey in the form of tables of data In sequence memory, program can call directly when application.By taking four phase step motor as an example, it is assumed that use four phase eight beat Control model is as shown in figure 11, is set, and P2.4, P2.5, P2.6 and P2.7 of AT89C51 system are respectively intended to control Four phases of stepper motor, according to table 1, the modelling of rotating forward are as follows: AC, A, AD, D, BD, B, BC, C；The model of reversion is set It is calculated as: C, BC, B, BD, D, AD, A, AC, and the step number of control stepper motor rotation is counted and reached using register Purpose.

It is accurately positioned due to requiring motor to be able to carry out, this requires accurately to control third stepper motor V -2 Slewing rate.

The mode of control V -2 slewing rate of third stepper motor is by changing the time interval between pulse, Ke Yili The time that delay is obtained with the initial time of setting timer, it can also be met by the delay time inside reprogramming It is required required for us.If rotation direction variation it is bigger, but motor still with a fixed revolving speed into When row work, then rotation time just may require that it is long.It should go the slewing rate for ensuring motor in reasonable range It is inside fast as far as possible, once again it is considered that excessive velocities, motor are possible to there is a phenomenon where step-out, this is because stepping Caused by the corresponding frequencies of motor are lower.

Therefore, can be directly connected with third stepper motor V -2 using the ULN2003 that Darlington displays, motor rotation Accuracy can be guaranteed by the program in single-chip microcontroller.

Table 1 eight claps driving method logical sequence

In the concrete realization, stamp system is packed in the automatic weighing of the present embodiment, further includes transport device IV.Such as Fig. 7 institute Show, transport device IV includes the first partial gear IV -1, the second partial gear IV -2, first gear IV -5, second gear IV -9, third gear IV -10, linear push plate IV -6, linear push rod IV -7 and rack gear IV -8；The first gear IV -5, second Gear IV -9, IV -10 three of third gear are intermeshed, and the first partial gear IV -1 and third gear IV -10 are coaxially connected, Both second partial gear IV -2 and first gear IV -1 are coaxially connected；One end of linear push rod IV -7 and IV -8 phase of rack gear Even, the other end is connected with linear push plate IV -6；

After sealing, the first partial gear IV -1 is engaged with rack gear IV -8, and linear push rod IV -7 is with rack gear IV -8 Movement, the linear push plate IV -6 connecting with linear push rod IV -7 release packaging bag and carry out stamp, subsequent second partial gear IV -2 engages with rack gear IV -8, and linear push plate IV -6 returns to original position.

Wherein, second stepper motor IV -3 is mounted on second stepper motor seat IV -4.Second gear IV -9 is fixed on On the main shaft of two stepping motor IV -3, second stepper motor IV -3 is fixed by screws on base, and base is fixed by screw On the rack.

The automatic weighing packaging stamp system of the present embodiment uses digital image recognition technology, reduces cost of labor, It solves ordinary electronic and weighs type of merchandize finiteness problem；

The automatic weighing packaging stamp system of the present embodiment overcomes conditional electronic scale manual identified, and weighing commodity are limited, The problems such as stamp device is separated with packing device, and stamp speed is slow.

The automatic weighing packaging stamp system overall process of the present embodiment realizes automatic identification, automatic sealing, automatic code-printing And automatic transportation, enhance customer purchase pleasant sensation.

Fully-automatic packaging stamp device in the automatic weighing packaging stamp system of the present embodiment will be packed in conjunction with stamp, Sufficiently combination utilizes respective characteristic, realizes quick and precise symmetrical amount commodity price stamps.

Fully-automatic packaging stamp device in the automatic weighing packaging stamp system of the present embodiment is receiving extraneous triggering Start after enabling signal；Whether the enabling signal of external world triggering is bought by customer is free as trigger signal, and customer's purchase is provided The human nature service of object.

Embodiment three

A kind of working method of automatic weighing packaging stamp system is present embodiments provided, overall process realizes automatic knowledge Not, automatic sealing, automatic code-printing and automatic transportation enhance customer purchase pleasant sensation.

The working method of the automatic weighing packaging stamp system of one kind of the present embodiment, comprising:

Using electronic scale described in embodiment one, unit price, weight and the pricing information of article to be measured are obtained, and is sent to and beats Code device；

Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.

Claims

1. a kind of electronic scale characterized by comprising

Weighing device is used to detect the weight of article to be measured；

The identification device is used for: being obtained item image information and is compared with images of items pre-stored in database, identifies Article kind out, and then obtain the monovalent information of article；

2. a kind of electronic scale as described in claim 1, which is characterized in that the weighing device includes device for pre-positioning, weighing Processor and weighing sensor；The device for pre-positioning is used to article to be measured being fixed on predetermined position；The weighing and sensing Device, for detecting the weight of the article to be measured of predeterminated position and being sent to weighing processor.

3. a kind of electronic scale as claimed in claim 2, which is characterized in that the weighing sensor is that diplopore cantilever parallel girder is answered Variant weighing sensor.

4. a kind of automatic weighing packaging stamp system characterized by comprising

Electronic scale as claimed in any one of claims 1-3；

The fully-automatic packaging stamp device includes closing device and stamp device；The closing device is used for default position The packaging bag that the place of setting accommodates article of having weighed is sealed, and the packaging bag after sealing is pushed to stamp device；The stamp Device is used for: being received unit price, weight and the pricing information of the article that identification device transmission comes, is generated two-dimension code label；It will be two-dimentional The code sticking one side of label tape is contacted with packaging bag, to stick in packaging bag appearance, completes stamp.

5. weighing packaging stamp system as claimed in claim 4 a kind of automatic, which is characterized in that the closing device includes the One press strip and the second press strip；Second press strip is fire-bar.

6. a kind of automatic weighing packaging stamp system as claimed in claim 5, which is characterized in that second press strip and temperature Control device is connected.

7. a kind of automatic weighing packaging stamp system as claimed in claim 4, which is characterized in that the stamp device is by temperature-sensitive Adhesive sticker printer and label peeling mechanism composition, the thermosensitive adhesive printer is for printing two-dimension code label；Label stripping Structure of disembarking is used to that the base stock of label paper and facial tissue to be made to separate using the tension of paper.

8. a kind of automatic weighing packaging stamp system as claimed in claim 7, which is characterized in that the label peeling mechanism packet Include: mainboard is equipped with driving shaft, asessory shaft, the first guide wheel and the second guide wheel on the mainboard；

It is provided with label folder on the driving shaft, is used to that label paper to be fixed；The driving shaft and stepper motor phase Even；The stepper motor provides power for driving shaft, and driving shaft provides the torque of the rotation of label paper, the machine inside stepper motor Structure is self-locking and fixation of the label folder to label paper, realizes fixation and tensioning to label paper；

The upper left side of asessory shaft is arranged in first guide wheel, and coiled label paper, the first guide wheel are fixed on the asessory shaft It is connected with the second guide wheel by label paper；When tag motion is to the top of the second guide wheel, fixation and master by label folder Moving axis makes label paper itself shape have a certain degree the drawing of label paper, the angle formed by label paper itself, and label is certainly It moves and is peeled away automatically with label paper at angle maximum value, realize automatically stripping for label.

9. a kind of automatic weighing packaging stamp system as claimed in claim 4, which is characterized in that it further include transport device, institute Stating transport device includes the first partial gear, the second partial gear, first gear, second gear, third gear, linear push Plate, linear push rod and rack gear；The first gear, second gear and third gear three are intermeshed, the first partial gear Coaxially connected with third gear, both the second partial gear and first gear are coaxially connected；One end of linear push rod and rack gear It is connected, the other end is connected with linear push plate；

After sealing, the first partial gear is engaged with rack, and linear push rod is connect with rack movement with linear push rod Linear push plate releases packaging bag and carries out stamp, and subsequent second partial gear is engaged with rack, and linear push plate returns to original position.

10. a kind of working method of the automatic weighing packaging stamp system as described in any one of claim 4-9, feature exist In, comprising:

Using electronic scale as claimed in any one of claims 1-3, unit price, weight and the pricing information of article to be measured are obtained, And it is sent to stamp device；

The packaging bag that closing device accommodates article of having weighed to predetermined position is sealed, and the packaging bag after sealing is pushed To stamp device；

The unit price of the article received, weight and pricing information are generated two-dimension code label by stamp device；By two-dimension code label band Sticking one side is contacted with packaging bag, to stick in packaging bag appearance, completes stamp.