CN208879108U - Fruit based on PLC control sorts transfer line system - Google Patents

Abstract

The utility model relates to fruits and vegetables Sorting Technique fields, and the fruit specially based on PLC control sorts transfer line system, including conveyor unit, sorting detection unit, supply unit and PLC control unit；Conveyor unit, including multiple groups conveyer belt, the transport for fruit；Sort detection unit, including a plurality of types of detection modules, the type of every group of conveyer belt sorting according to needed for fruit at least installs a kind of detection module, and every kind of detection module is used to detect the sorting rank of fruit on the conveyer belt where it；Supply unit, including multiple manipulators, every group of conveyer belt configure at least one manipulator, and supply unit is for carrying out snatch conveying to the fruit on conveyer belt under the control of PLC control unit.This programme automatically detects the sorting of a variety of Quality Types of fruit by realizing, improves the fine sorting and sorting quality of fruit.

Description

Fruit based on PLC control sorts transfer line system

Technical field

The utility model relates to fruits and vegetables Sorting Technique fields, and the fruit specially based on PLC control sorts transfer line system.

Background technique

Currently, the fruit industry as the third-largest industry being only second to after grain, vegetables in planting industry, total output are fast Speed increases.The market core competitiveness of fruit depends primarily on fruit quality and is classified, cleaned, waxed, packed to fruit The equal big factor of postharvest treatments two.The fruit total output in China is very high, but due to the backwardness of China's fruit postharvest treatment ability, causes The international competitiveness of fruit substantially reduces, and makes the China for possessing world's fruit total amount nearly 1/3, institute's accounting in international trade share Example is hovered 1% or so always, out of proportion between the total output and the volume of trade of fruit, forms contrast.

The postharvest treatment of fruit mainly includes the automation such as online, cleaning, waxing, drying, sorting, labeling, vanning, storage and transportation Continuous productive process process.It is substantially the automation control of start and stop, interlocking of some processes etc. in above-mentioned continuous productive process process in addition to sorting System, is easier to realize.Wherein, sorting becomes one of important step in above-mentioned process, and the effect of fruit sorting is directly related to the later period Fruit packaging, storing and the benefit of sale.But in China due to detecting the backwardness with Sorting Technique, the commodity of fruit at present Change processing only accounts for 10% or so of fruit total output, and the average loss rate after fruit harvest is 30% or so, and most products are all There are the status that first-class fruit, three flow packaging, many high-quality excellent fruit of product are because without passing through stringent Quality Detection and dividing Grade, causes fruit quality very different, high-grade fruit can only be sold with low-grade price.

Currently, external fruit Sorting Technique is relatively advanced, according to the sorting type of fruit, weight can be carried out to fruit The sorting of amount, size, inside quality and external sort.Although domestic fruit Sorting Technique was obtaining largely in recent years Development, but on the whole, fruit Sorting Technique still falls behind than external technology.Therefore, if domestic manufacturer will have Fruit sorting quality must just use the fruit sorter of import, and the price of exotic fruit sorting machine is more expensive so that Domestic many producers powerlessly use, and the fruit sorting effect for causing China current is general, and the postpartum added value of fruit does not obtain It improves well.Therefore, the fruit Sorting Technique of domestic becomes particularly important.In addition, fruit sorting currently on the market Machine all only carries out the sorting of single form to fruit, such as size sorter only carries out size sorting, weight to fruit Sorter only carries out weight sorting to fruit, and external sort sorter only carries out external sort sorting, interior component to fruit Matter sorter is limited only to carry out inside quality sorting to fruit, and the specification of sorting is excessively single, although in this way, the effect of sorting Rate is higher, but fruit is not carried out detailed sorting, causes final sorting effect general.

Utility model content

The utility model is intended to provide the fruit sorting transfer line system based on PLC control, to solve the product of fruit sorting Matter not subtle problems automatically detect the sorting of a variety of Quality Types of fruit by realizing, improve the fine sorting of fruit And sorting quality.

To solve the above problems, the technical solution of the utility model is as follows:

Fruit based on PLC control sorts transfer line system, including conveyor unit, sorting detection unit, supply unit With PLC control unit；

Conveyor unit, including multiple groups conveyer belt will wherein one group of conveyer belt be fed for the transport of fruit as fruit Main belt, other conveyer belts are arranged by the tree-shaped distribution of starting point of main transmission belt；The entrance of every group of conveyer belt is mounted on Sensor sends notice letter to PLC control unit when transmission of the sensor for where detecting it has fruit supplied materials Number, the conveyer belt fortune where the sensor is controlled after the notification information that the PLC control unit is sent for receiving sensor Row；

Sort detection unit, including a plurality of types of detection modules, the type of every group of conveyer belt sorting according to needed for fruit A kind of detection module is at least installed, every kind of detection module is respectively provided with sorting rank according to fruit quality；Every kind of detection module is used In the sorting rank for detecting fruit on the conveyer belt where it, the sorting level signal for being also used to will test is sent to PLC control Unit processed；

Supply unit, including multiple manipulators, every group of conveyer belt configure at least one manipulator, and supply unit is used for Snatch conveying is carried out to the fruit on conveyer belt under the control of PLC control unit；

PLC control unit successively sets each detection module to every group of conveyer belt according to the tree-shaped distribution situation of conveyer belt Sorting rank height, for the biography where controlling the detection module after the sorting level signal for receiving detection module transmission It send with corresponding robot work, after the fruit on the manipulator snatch conveyer belt, PLC control unit is single for controlling conveying After manipulator is transported to the corresponding conveyer belt entrance of fruit sorting rank detected by member, then manipulator is controlled by fruit It is placed on the entrance of the conveyer belt, PLC control unit is also used to control manipulator and grabs the fruit that sorting finishes from conveyer belt It walks.

It further, further include feed unit, feed unit is used to fruit being transported to main belt, and in transmission process It is middle that fruit is adjusted to single orderly position；

PLC control unit is also used to control feed unit starting and closes.

Further, the feed unit includes feed skewed slot conveyer belt, at the left and right edges of the feed skewed slot conveyer belt It is provided with idler wheel.

Further, the PLC control unit includes more PLC, more plc communication connections, wherein based on a PLC setting Stand PLC, and the main website PLC is used to control the supply unit operation an of manipulator, and several PLC of residue are set as slave station PLC, institute Slave station PLC is stated for controlling the supply unit operation of conveyor unit, feed unit and other several manipulators respectively.

It further, further include multiple packaging units, the respective sorting grade that each packaging unit is set according to each conveyer belt Not height design packaging rank, the fruit that the detection for receiving the other conveyer belt conveying of corresponding packaging level respectively finishes.

Further, further include button module, button module include start button, stop button, reset button and emergency stop by Button；Start button, for the fruit sorting transfer line system each unit meet initial origin under the conditions of, press starting by Button, the system bring into operation；Stop button, for when each unit operates normally, pressing stop button, system is completed to work as It is out of service after the preceding duty cycle；When reset button: breaking down for the equipment operation in unit or alarm, reset is pressed Button can stop and reset the equipment of certain unit；When scram button: breaking down for the equipment operation in unit or alarm, Scram button is pressed, the equipment of certain unit can be stopped.

It further, further include touch screen module, for monitoring and debugging the operating condition of entire transfer line system.

Further.Conveyer belt described in every group selects the conveyor chain of the bipatch large roller with K-type attachment.

Further, fruit tray mechanism is equipped on transmission belt described in every group.

Further, the supply unit further includes transmission component and towing chain device；The transmission component includes bottom plate, slide carriage And guide rail slide block, the bottom plate are equipped with guide rail along its length, guide rail is slidably installed guide rail slide block, and the slide carriage is fixed on guide rail The upper surface of sliding block, the slide carriage are used for installation manipulator；The towing chain device includes active synchronization wheel, driven synchronizing wheel, watches It takes motor and controls the servo-driver of servo motor work, the active synchronization wheel and driven synchronizing wheel are separately positioned on guide rail Both ends in the width direction, by synchronizing band connection between the active synchronization wheel and driven synchronizing wheel, the servo motor Output shaft is connect by crawler belt with active synchronization wheel, and the synchronous belt is fixedly connected with slide carriage.

The utility model compared with prior art, has the following advantages that and effect:

1, solve in domestic fruit Sorting Technique at present that fruit sorting type is single, by the way that multiple detection modules are arranged, The fine sorting of fruit is improved, and fruit is transmitted by the way that multiple groups conveyer belt is arranged, improves sorting quality, this programme Whole process can PLC control unit carry out system operation, reduce human cost, improve the automatization level of agricultural production, most It can satisfy the different sorting requirement of fruit eventually.

2, it is not independently operated for being sorted based on the fruit that PLC is controlled between each unit of transfer line system, each By the means of communication between a unit, the exchange of information is carried out between each other, an entirety is formed, to improve equipment Control ability, reliability realize " centralized processing, decentralised control ".

3, the fruit of this programme is transmitted using chain delivery by the way of, solve vibration in common transmission tape transfer procedure with The big problem of frictional force avoids causing fruit bruising in fruit transmit process.

4, fruit tray is installed in face on a moving belt, is solved between multiple fruit and between fruit and conveyer belt due to length The problem of frictional force of time contact declines fruit external sort.

5, the mode of manipulator snatch is used between every group of conveyer belt, the fruits transport solved between each conveyer belt is asked Topic.

6, touch screen plays bridge channeling as the window of human-computer interaction.By touch screen, keep us intuitive Understanding PLC function situation, modified with the operating parameter to PLC, the production efficiency of production line can be confirmed.

Detailed description of the invention

Fig. 1 is the overall frame structure figure that the utility model sorts transfer line system embodiment based on the fruit that PLC is controlled；

Fig. 2 is the structure chart of conveyor unit in the present embodiment；

Fig. 3 is the structural schematic diagram of conveyer belt A in the present embodiment；

Fig. 4 is the structural schematic diagram of conveyer belt B or conveyer belt C in the present embodiment；

Fig. 5 is the structural schematic diagram in the present embodiment as the supply unit of manipulator A；

Fig. 6 is the structural schematic diagram of feed unit in the present embodiment；

Fig. 7 is the structural schematic diagram of fruit tray mechanism in the present embodiment；

Fig. 8 is the PPI network of PLC control unit in the present embodiment；

Fig. 9 is the work flow diagram of the fruit sorting transfer line system in the present embodiment based on PLC control.

Specific embodiment

It is further described below by specific embodiment:

Appended drawing reference in Figure of description includes: feed skewed slot conveyer belt 1, idler wheel 2, photoelectric sensor 3, driven sprocket 4, threephase asynchronous 5, power output sprocket 6, weighs detection module 7, weighing unit 8, conveyor chain 9, fruit tray mechanism 10, transportation sprocket 11, fruit tray 12, tray supporter 13, attachment 14, support plate 15, support board mount 16, limit iron bar 17, Steel ball 18, bottom plate 19, guide rail slide block 20, slide carriage 21, synchronous belt 22, first support 23, crawler belt 24, servo motor 25, vacuum are inhaled Disk 26, vacuum chuck cylinder 27, arm telescopic cylinder 28, oscillating cylinder 29, lifting cylinder 30, linear guide 31, second support 32, infrared detection module, fingerprint identification module 33.

Embodiment is substantially as shown in Fig. 1, the fruit sorting transfer line system based on PLC control, including conveyor unit, Sort detection unit, supply unit and PLC control unit；

PLC control unit, using siemens PLC series of PLC, PLC is programmable controller, for controlling conveyer belt Unit, sorting detection unit and supply unit work；

Conveyor unit, including multiple groups conveyer belt will wherein one group of conveyer belt be fed for the transport of fruit as fruit Main belt, other conveyer belts are arranged by the tree-shaped distribution of starting point of main transmission belt；The entrance of every group of conveyer belt is mounted on Sensor sends notification signal to PLC control unit when transmission of the sensor for where detecting it has fruit supplied materials, The conveyer belt operation where the sensor is controlled after the notification information that PLC control unit is sent for receiving sensor.In this reality It applies in example, as shown in Fig. 2, three groups of conveyer belts, including conveyer belt A, conveyer belt B and conveyer belt C, transmission is arranged in conveyor unit For band A as main belt, conveyer belt B and conveyer belt C are used as next layer of conveyer belt A parallel；Wherein, sensor uses photoelectric transfer Photoelectric proximity switch in sensor 3.

Specific working mode is as follows: when fruit enters conveyer belt A, conveyer belt B or conveyer belt C, conveyer belt A, transmission The light-sensitive element that fruit will be reflected back itself is encountered with the light that the photoelectric proximity switch of B or conveyer belt C entrance issues, Photoelectric proximity switch will output signal to the input terminal of PLC, then change the data of the input interface section of PLC Become, thus start conveyer belt, control conveyer belt operating, for example, the photoelectric proximity switch on the received conveyer belt A of PLC is sent Signal after, PLC control conveyer belt A operating.

Sort detection unit, including a plurality of types of detection modules, the type of every group of conveyer belt sorting according to needed for fruit A kind of detection module is at least installed, every kind of detection module is respectively provided with sorting rank according to fruit quality；Every kind of detection module is used In the sorting rank for detecting fruit on the conveyer belt where it, the sorting level signal for being also used to will test is sent to PLC control Unit processed.

As shown in Figure 3 and Figure 4, in the present embodiment, the weight and exterior quality that required type includes fruit are sorted, i.e., Comprising two kinds of detection module, respectively weighs detection module 7 and infrared detection module, fingerprint identification module 33, weighs detection module 7 is used for The weight of fruit is detected, infrared detection module, fingerprint identification module 33 is used to detect the exterior quality of fruit, and conveyer belt A installs weighs detection module 7, Conveyer belt B and conveyer belt C are respectively mounted infrared detection module, fingerprint identification module 33.According to the quality standard of fruit weight, weighs detection module 7 Sorting rank is divided into three-level quality, and the quality of fruit weight is successively decremented to level-one quality, second level quality, three-level quality； According to the quality standard of fruit appearance, the sorting rank of infrared detection module, fingerprint identification module 33 is divided into two-stage quality, and the quality of fruit appearance is excellent It is bad to be successively decremented to level-one quality, second level quality.

Weighs detection module 7 selects resistance strain type sensor, it is preferred that in order to solve the influence of environment temperature, resistance The resistance strain type sensor of strain gauge transducer selection beam type；Infrared detection module, fingerprint identification module 33 selects fibre optical sensor.

Supply unit, including multiple manipulators, every group of conveyer belt configure at least one manipulator, and supply unit is used for Snatch conveying is carried out to the fruit on conveyer belt under the control of PLC control unit.In the present embodiment, supply unit includes three A manipulator, respectively manipulator A, manipulator B and manipulator C.

As shown in figure 5, supply unit further includes transmission component and towing chain device, transmission component includes bottom plate 19, slide carriage 21 With guide rail slide block 20, the front and rear sides of bottom plate 19 along its length are respectively equipped with two linear guides 31, each linear guide 31 Be slidably installed two guide rail slide blocks 20, and four corners of slide carriage 21 are separately fixed at the upper of four guide rail slide blocks 20 by bolt Surface, to realize that slide carriage 21 slides in two linear guides 31.Towing chain device include active synchronization wheel, driven synchronizing wheel, The servo-driver that servo motor 25 and control servo motor 25 work, active synchronization wheel and driven synchronizing wheel are separately positioned on two The both ends of a linear guide 31 in the width direction are connected between active synchronization wheel and driven synchronizing wheel by synchronous belt 22, synchronous The centre for being located at two linear guides 31 with 22, synchronous belt 22 are fixedly connected with the bottom of slide carriage 21, the output of servo motor 25 Axis is connect by crawler belt 24 with active synchronization wheel.Bottom plate 19 is respectively equipped with 23 He of first support at the both ends of two linear guides 31 Second support 32, active synchronization wheel and servo motor 25 are mounted in first support 23, and driven synchronizing wheel is mounted on second support On 32.Servo controller is electrically connected with servo motor 25 and PLC control unit respectively.Wherein, servo motor 25 uses Panasonic MHMD022PIU permanent magnet synchronous ac servo motor 25, servo controller use the digital alternating-current synchronous of MADDTl207003 Servo drive.

Manipulator A is mounted on slide carriage 21, i.e. slide carriage 21 is mobile to drive manipulator A mobile.Specifically, manipulator A Including vacuum chuck cylinder 27, arm telescopic cylinder 28, oscillating cylinder 29 and lifting cylinder 30, lifting cylinder 30 is vertically mounted on On slide carriage 21, the output shaft of lifting cylinder 30 is connected with support plate 15, and oscillating cylinder 29 is vertically mounted in support plate 15, pendulum It takes offence the output axis connection arm telescopic cylinder 28 of cylinder 29, oscillating cylinder 29 is mutually perpendicular to arm telescopic cylinder 28, and arm is stretched The output shaft of contracting cylinder 28 stretches out connection vacuum chuck cylinder 27 in the horizontal direction, installs on the output shaft of vacuum chuck cylinder 27 There is vacuum chuck 26, manipulator A and PLC control unit are electrically connected, and PLC control unit controls vacuum chuck cylinder 27, arm The operation of telescopic cylinder 28, oscillating cylinder 29 and lifting cylinder 30.Manipulator B and manipulator C in addition to being not provided with oscillating cylinder 29, Lifting cylinder 30 is directly mutually connected vertically with arm telescopic cylinder 28, the other structures of manipulator B and manipulator C and has been designed Entirely as manipulator A, details are not described herein.Snatch is carried out to fruit using sucker manipulator, is reduced in the conveying of fruit Friction, preferably protect the quality of fruit.

PLC control unit successively sets each detection module to every group of conveyer belt according to the tree-shaped distribution situation of conveyer belt Sorting rank height, for the biography where controlling the detection module after the sorting level signal for receiving detection module transmission It send with corresponding robot work, after the fruit on the manipulator snatch conveyer belt, PLC control unit is single for controlling conveying After manipulator is transported to the corresponding conveyer belt entrance of fruit sorting rank detected by member, then manipulator is controlled by fruit It is placed on the entrance of the conveyer belt, PLC control unit is also used to control manipulator and grabs the fruit that sorting finishes from conveyer belt It walks.Fruit sorting finishes the detection for referring to that fruit no longer carries out quality, is directly used in the follow-up work of the postharvest treatment of fruit, and No longer conveyed on conveyer belt.

In the present embodiment, the sorting rank of PLC control unit setting conveyer belt is as follows: conveyer belt A setting weighing detection The three-level quality of module 7, conveyer belt B set the second level quality of weighs detection module 7, and conveyer belt C sets weighs detection module 7 Level-one quality；Conveyer belt B sets the second level quality of infrared detection module, fingerprint identification module 33, and conveyer belt C sets the two of infrared detection module, fingerprint identification module 33 Grade quality；The level-one quality fruit that infrared detection module, fingerprint identification module 33 on conveyer belt B and conveyer belt C detected directly is that sorting finishes Fruit.

As shown in Figure 1, the fruit based on PLC control sorts transfer line system, it further include feed unit, feed unit is used for Fruit is transported on main belt, and fruit is adjusted to single orderly position during transportation；PLC control unit is also For controlling feed unit starting and closing.As shown in fig. 6, feed unit includes feed skewed slot conveyer belt 1, the feed skewed slot Idler wheel 2 is rotatably equipped at the left and right edges of conveyer belt 1, wherein idler wheel 2 is four cylindrical idler wheels 2, and feed skewed slot passes It send and is respectively separated rotation two cylindrical rollers 2 of setting at the left and right edges of band 1.Specifically, feed skewed slot conveyer belt 1 is by three Phase asynchronous motor 5 drives, and threephase asynchronous 5 not only can change rate, also can change direction, three-phase asynchronous electric The change in 5 rate of machine and direction is controlled using universal frequency converter.

It further include multiple packaging units, the respective sorting rank height that each packaging unit is set according to each conveyer belt is set Meter packaging rank, the fruit that the detection for receiving the other conveyer belt conveying of corresponding packaging level respectively finishes.In the present embodiment, Including five packaging units, five packaging ranks are respectively set in five packaging units, for packaging A, packaging B, packaging C, packaging D, F is packed, five packaging units are packed respectively according to the best in quality of fruit.

Specific as follows: packaging A is fifth level packaging, and using common carton either simple polybag, packaging A is located at The delivery outlet of conveyer belt A is detected for receiving conveyer belt A as the fruit of three-level quality；B is packed as fourth level packaging, is adopted With the outer packaging bag of general film, the delivery outlet that B is located at conveyer belt C is packed, is detected for receiving by conveyer belt C as second level The fruit of quality；C is packed as third level packaging, the slightly good outer packaging bag of use, packaging C is located at the delivery outlet of conveyer belt B, uses It detects in receiving by conveyer belt B as the fruit of second level quality；D is packed for second level packaging, using preferable outer packing Bag, packaging D are located at the delivery outlet of conveyer belt B, detect for receiving by conveyer belt B as the fruit of level-one quality；Packing F is First level packaging packs the delivery outlet that F is located at conveyer belt C using best outer packaging bag, passes through conveyer belt C for receiving It detects as the fruit of level-one quality.

It further include button module, button module includes start button, stop button, reset button and scram button；

Start button, for pressing under the conditions of each unit of fruit sorting transfer line system meets initial origin Start button, the system bring into operation；

Stop button, for when each unit operates normally, pressing stop button, system completes current operating cycle Afterwards, out of service；

When reset button: breaking down for the equipment operation in unit or alarm, reset button is pressed, can stop and answer The equipment of certain unit of position；

When scram button: breaking down for the equipment operation in unit or alarm, scram button is pressed, certain list can be stopped The equipment of member.

It further include touch screen module, for monitoring and debugging the operating condition of entire transfer line system.Touch screen module is adopted With the touch screen of TPC7062K model.Touch screen and buzzer are combined to be coordinated to get up by warning message and warning message, i.e., at once When buzzer warning, touch screen interface will automatic jump to warning message interface, show corresponding failure stations and break down Possible cause.

Further include power module, is configured with three phase mains, direct current 24V power supply and various power switches on power module.Three Phase power supply threephase asynchronous 5 and servo motor 25 use, direct current 24V power supply PLC, weighs detection module 7, red Outer detection module 33 and photoelectric sensor 3 use.

In the present embodiment, as shown in figure 3, being equipped with fruit tray mechanism 10 on transmission belt described in every group.Fruit tray Mechanism 10 makes mutually isolated between each fruit, eliminates the contact between fruit and conveyer belt and between fruit and fruit, To solve the problems, such as that fruit caused external sort to decline because of the effect of mutual frictional force.

As shown in figure 3, every group of conveyer belt selects the conveyor chain 9 of the bipatch large roller with K-type attachment 14, carrier chain Item 9 is rotated by driven sprocket 4 and transportation sprocket 11, and is dragged conveyor chain 9 with threephase asynchronous 5 and run, The output shaft of threephase asynchronous 5 is connected with power output sprocket 6, and power output chain passes through crawler belt 24 and driven sprocket 4 Connection.The change in 5 rate of threephase asynchronous and direction is controlled using universal frequency converter, finally achievable conveyer belt A, transmission The change of transmission speed with B, conveyer belt C.Conveyer belt A further includes weighing unit 8, and weighs detection module 7 is mounted on weighing unit 8 On.

It, can be with as shown in fig. 7, fruit tray mechanism 10 is equally spacedly mounted on the K-type attachment 14 of conveyor chain 9 The movement of conveyor chain 9 and move, fruit tray mechanism 10 includes fruit tray 12, tray supporter 13, limit iron bar 17 and steel Ball 18, tray supporter 13 can be coupled by rivet or bolt with the fastening of the K-type attachment 14 of conveyor chain 9, fruit tray 12 Be mounted on tray supporter 13, the installation direction of fruit tray 12 is vertical with the direction of motion of conveyor chain 9, fruit tray 12 with The fastening connection of iron bar 17 is limited, fruit tray 12 can flip an angle with limit iron bar 17 around tray supporter 13, limit iron bar 17 can limit flip angle, and steel ball 18 is arranged in 12 bottom of fruit tray, be transported to weighing with conveyor chain 9 in fruit tray 12 At detection module 7, steel ball 18 can press the weighs detection module 7 on conveyer belt A, to realize on fruit tray 12 Fruit weight detecting.

Since the transmission vibration of conveyor chain 9 is larger, the accuracy of production line measurement result will affect, in order to reduce conveying Influence and guarantee fruit tray 12 of the vibration of chain 9 to fruit weight accuracy are in sustained height, in 9 pilled-in selvedge chain of conveyor chain Lower section is equipped with support plate 15 and support board mount 16, thus fruit sorting transfer line system is during the work time, conveyor chain 9 Pilled-in selvedge chain roller can be rolled along support plate 15.

In the present embodiment, PLC control unit includes four PLC, using the PLC network control of Siemens's PPI communication protocol Scheme processed connects the port for being used as PPI in each PLC with grid line using network joint and is communicated.PPI agreement is S7- 200 CPU most basic communication mode can realize communication by itself original port PO RT0 or PORT1, be S7- The communication mode of 200 defaults.PPI is a kind of MS master-slave protocol communication, and in a token-ring network, main website transmission is wanted at MS master-slave station Ask slave station device, slave station response device；Slave station device not photos and sending messages simply wait for the requirement of main website and to requiring to make sound It answers.If enabling PPI master station mode in user program, so that it may instructed in main website program using net reading and writing read and write from It stands information, and slave station program is just not necessarily to instruct using net reading and writing.

Specifically, as shown in figure 8, using a PLC as the main website A of the supply unit of manipulator A, main website A and touch screen Module communication connection, main website A select the connector with programming interface, and the programming port of the connector is mostly main by RS--232/PPI Cable of standing connects to personal computer.Its excess-three platform PLC is as slave station, slave station selection standard network connector and personal computer The supply unit of connection, respectively slave station B, slave station C and slave station D, slave station B and manipulator B communicate to connect, slave station C and manipulator C Supply unit communication connection, conveyor unit and feed unit share slave station D communication connection, to constitute a distributed control The small PLC network of system is realized to the data transmission of transfer line system and data processing and control.Fruit point based on PLC control It is not independently operated for picking between each unit of transfer line system, by the online control slave station B of PLC as main website A, from It stands between C and slave station D and its each unit through the means of communication, carries out the exchange of information between each other, formation one is whole Body realizes " centralized processing, decentralised control " to improve the control ability of equipment, reliability.

As shown in figure 9, the implementing procedure of the fruit sorting transfer line system based on PLC control is as follows: start button is pressed, Fruit sorting transfer line system based on PLC control brings into operation.Fruit is placed on feed skewed slot conveyer belt 1, as slave station D's PLC control feed skewed slot conveyer belt 1 starts, and fruit comes from the upper end of feed skewed slot conveyer belt 1, these rambling fruit Supplied materials is when idler wheel 2 by rotation, the meeting under the action of frictional force of the advance of feed skewed slot conveyer belt 1 and idler wheel 2 It is gradually concentrated to the intermediate of feed skewed slot conveyer belt 1, the position placement of four rolling 2 makes the left and right zone of action of fruit gradually Reduce, finally constitute the fruit for showing sequence, enter conveyer belt A from the bottom end of feed conveyor, in order to subsequent detection point It picks.

Fruit enters the entrance of conveyer belt A, after the photoelectric sensor 3 at this detects fruit supplied materials, photoelectric sensing Device 3 issues signal and is run by the threephase asynchronous 5 that the PLC as main website A controls conveyer belt A, when fruit is run to title When re-detection module 7, the meeting of weighs detection module 7 carries out analytical calculation to the weight of fruit, knows the fruit by the result calculated It is which rank of other weight quality belonged to, the signal that weighs detection module 7 will test is sent to main website PLC.When main website A is received Signal be level-one quality fruit, main website A control manipulator A supply unit by the fruit snatch be transported to transmission belt C into At mouthful；When main website A receives the fruit that signal is second level quality, main website A controls the supply unit of manipulator A for the fruit snatch It is transported to the entrance of transmission belt B；When main website A receives the fruit that signal is three-level quality, the fruit is directly with conveyer belt A Packaging A is sent to be packed.

The snatch of the supply unit progress fruit of main website A control manipulator A and transportation work are implemented as follows:

The original state of manipulator A:

(1) vacuum chuck 26 is in releasing orientation；

(2) lifting cylinder 30 is in retracted mode；

(3) arm telescopic cylinder 28 is in retracted mode；

(4) oscillating cylinder 29 is in right limit.

The supply unit operational process of manipulator A: after weighing detection unit detects the weight of fruit, main website A control is risen Sending down abnormally ascending cylinder 30 starts, so that manipulator A is integrally promoted in place, then arm telescopic cylinder 28 stretches out, i.e. the arm of manipulator A arrives Position, then sucker is controlled by vacuum chuck cylinder 27 and sucks fruit.After sucking fruit, the arm of manipulator A is retracted, manipulator A Entire lowering, after falling into place, main website A controls servo controller, so that servo motor 25 is started to work.Servo motor 25 works Synchronous belt 22 is driven to rotate, so that slide carriage 21 follows synchronous belt 22 to be moved, slide carriage 21 is mobile to drive manipulator A mobile, makes The fruit of snatch is delivered to the entrance of conveyer belt B or conveyer belt C by manipulator A.It is whole to be promoted after manipulator A conveying in place, The arm of manipulator A stretches out after being promoted in place, again in place after, manipulator A is whole to be declined again, after falling into place, vacuum chuck 26 loosen, and finally send fruit to the entrance to conveyer belt B or conveyer belt C, complete the transmit process of fruit.Manipulator A is completed After fruit transmits work, the supply unit that main website A controls manipulator A again carries out inverse operation, so that manipulator A backtracking arrives Initial position carries out fruit conveying next time.

Fruit in snatch to conveyer belt B and conveyer belt C, in the photoelectric sensing of the respective entrance of conveyer belt B and conveyer belt C After device 3 detects fruit supplied materials, respective photoelectric sensor 3 issues signal notice and controls respectively as the PLC of slave station B and slave station C The threephase asynchronous 5 of conveyer belt B and conveyer belt C is run, when fruit is transmitted to infrared detection module, fingerprint identification module 33, infrared detection mould Block 33 detects the exterior quality of fruit, and the signal that will test is sent to respective slave station B and slave station C.

When infrared detection module, fingerprint identification module 33 detects that the fruit of level-one quality, slave station B control the conveying of manipulator B on conveyer belt B The fruit snatch is transported to packaging D and packed by unit；When infrared detection module, fingerprint identification module 33 detects second level quality on conveyer belt B Fruit, the fruit are sent to packaging B directly with conveyer belt B and are packed.When infrared detection module, fingerprint identification module 33 detects on conveyer belt C The fruit snatch is transported to packaging F and packed by the fruit of level-one quality, the supply unit of slave station C control manipulator C；Work as biography Send the fruit that second level quality is detected with infrared detection module, fingerprint identification module 33 on C, the fruit directly with conveyer belt C be sent to packaging C into Row packaging.The working principle of the supply unit snatch fruit transportation of the supply unit and manipulator C of manipulator B is with manipulator A's Supply unit is consistent, and details are not described herein.

By the sorting of the sorting transfer line system, the weight of fruit and the two types detection of exterior quality are realized, Using three manipulators, four conveyer belts, wherein a conveyer belt is used by feed unit, weight and outer component to fruit Matter is sorted, and entire sort process can accomplish to reduce frictional force of the fruit in sorting, improves the quality of fruit sorting, root The target that fine sorting fruit is carried out according to the weight and external sort of fruit, finally makes fruit that will be divided into five ranks, The quality for improving fruit sorting can satisfy the requirement of fruit sorting.

Above-described is only the embodiments of the present invention, and the common sense such as well known specific structure and characteristic are herein in scheme It does not describe excessively, the affiliated technology neck of utility model before one skilled in the art know the applying date or priority date All ordinary technical knowledges in domain can know the prior art all in the field, and have using normal before the date The ability of laboratory facilities is advised, one skilled in the art can be complete in conjunction with self-ability under the enlightenment that the application provides It is apt to and implements this programme, it is real that some typical known features or known method should not become one skilled in the art Apply the obstacle of the application.It should be pointed out that for those skilled in the art, in the premise for not departing from the utility model structure Under, several modifications and improvements can also be made, these also should be considered as the protection scope of the utility model, these all will not influence The effect and patent practicability that the utility model is implemented.This application claims protection scope should be with the content of its claim Subject to, the records such as specific embodiment in specification can be used for explaining the content of claim.

Claims (10)

1. based on PLC control fruit sort transfer line system, it is characterised in that: including conveyor unit, sorting detection unit, Supply unit and PLC control unit；

Conveyor unit, including multiple groups conveyer belt, for the transport of fruit, using the master that wherein one group of conveyer belt is fed as fruit Conveyer belt, other conveyer belts are arranged by the tree-shaped distribution of starting point of main transmission belt；The entrance of every group of conveyer belt is mounted on sensing Device sends notification signal, institute to PLC control unit when transmission of the sensor for where detecting it has fruit supplied materials State the conveyer belt operation controlled after the notification information that PLC control unit is sent for receiving sensor where the sensor；

Detection unit, including a plurality of types of detection modules are sorted, the type of every group of conveyer belt sorting according to needed for fruit is extremely A kind of detection module is installed less, every kind of detection module is respectively provided with sorting rank according to fruit quality；Every kind of detection module is for examining The sorting rank of fruit on the conveyer belt where it is surveyed, it is single that the sorting level signal for being also used to will test is sent to PLC control Member；

Supply unit, including multiple manipulators, every group of conveyer belt configure at least one manipulator, and supply unit is used in PLC Snatch conveying is carried out to the fruit on conveyer belt under the control of control unit；

PLC control unit successively sets point of each detection module to every group of conveyer belt according to the tree-shaped distribution situation of conveyer belt Rank height is picked, for the conveyer belt where controlling the detection module after the sorting level signal for receiving detection module transmission Corresponding robot work, after the fruit on the manipulator snatch conveyer belt, PLC control unit will for controlling supply unit After manipulator is transported to the corresponding conveyer belt entrance of fruit sorting rank detected, then controls manipulator and be placed on fruit The entrance of the conveyer belt, PLC control unit are also used to control manipulator and catch away the fruit that sorting finishes from conveyer belt.

2. the fruit according to claim 1 based on PLC control sorts transfer line system, it is characterised in that: further include supplying Material unit, feed unit are used to fruit being transported to main belt, and fruit is adjusted to single orderly during transportation Position；

PLC control unit is also used to control feed unit starting and closes.

3. the fruit according to claim 2 based on PLC control sorts transfer line system, it is characterised in that: the feed Unit includes feed skewed slot conveyer belt, is provided with idler wheel at the left and right edges of the feed skewed slot conveyer belt.

4. the fruit according to claim 2 based on PLC control sorts transfer line system, it is characterised in that: the PLC control Unit processed includes more PLC, and more plc communication connections, wherein a PLC is set as main website PLC, the main website PLC is for controlling The supply unit operation an of manipulator is made, several PLC of residue are set as slave station PLC, and the slave station PLC is passed for control respectively The supply unit of tape cell, feed unit and other several manipulators is sent to run.

5. the fruit according to claim 1 based on PLC control sorts transfer line system, it is characterised in that: further include more A packaging unit, the respective sorting rank height design packaging rank that each packaging unit is set according to each conveyer belt, is used for The fruit that the detection of the other conveyer belt conveying of corresponding packaging level finishes is received respectively.

6. it is according to claim 1 based on PLC control fruit sort transfer line system, it is characterised in that: further include by Button module, button module include start button, stop button, reset button and scram button；

Start button, for pressing starting under the conditions of each unit of fruit sorting transfer line system meets initial origin Button, the system bring into operation；

Stop button, for each unit operate normally when, press stop button, system after completing current operating cycle, It is out of service；

When reset button: breaking down for the equipment operation in unit or alarm, reset button is pressed, can stop and reset certain The equipment of unit；

When scram button: breaking down for the equipment operation in unit or alarm, scram button is pressed, certain unit can be stopped Equipment.

7. the fruit based on PLC control described in -6 any one claims sorts transfer line system according to claim 1, It is characterized in that: further including touch screen module, for monitoring and debugging the operating condition of entire transfer line system.

8. the fruit according to claim 7 based on PLC control sorts transfer line system, it is characterised in that: described in every group Conveyer belt selects the conveyor chain of the bipatch large roller with K-type attachment.

9. the fruit according to claim 8 based on PLC control sorts transfer line system, it is characterised in that: described in every group Fruit tray mechanism is equipped on transmission belt.

10. according to claim 1 or the fruit based on PLC control described in 9 sorts transfer line system, it is characterised in that: described Supply unit further includes transmission component and towing chain device；

The transmission component includes bottom plate, slide carriage and guide rail slide block, and the bottom plate is equipped with guide rail, guide rail sliding peace along its length Guide rail slide block is filled, the slide carriage is fixed on the upper surface of guide rail slide block, and the slide carriage is used for installation manipulator；

The towing chain device includes that active synchronization wheel, driven synchronizing wheel, servo motor and the servo of control servo motor work are driven Dynamic device, the active synchronization wheel and driven synchronizing wheel are separately positioned on the both ends of guide rail in the width direction, the active synchronization wheel By synchronous band connection between driven synchronizing wheel, the output shaft of the servo motor is connect by crawler belt with active synchronization wheel, The synchronous belt is fixedly connected with slide carriage.