CN202752244U - Mail feeding conveyer line - Google Patents

Mail feeding conveyer line Download PDF

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Publication number
CN202752244U
CN202752244U CN 201220384378 CN201220384378U CN202752244U CN 202752244 U CN202752244 U CN 202752244U CN 201220384378 CN201220384378 CN 201220384378 CN 201220384378 U CN201220384378 U CN 201220384378U CN 202752244 U CN202752244 U CN 202752244U
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China
Prior art keywords
transfer structure
mail
arrowband
sorting
broadband
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CN 201220384378
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Chinese (zh)
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高再仁
欧耀多
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Individual
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Individual
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Abstract

The utility model discloses a mail feeding conveyer line which comprises a narrow belt transmission structure composed of not less than two groups of conveyer belt transmission structures and a wide belt transmission structure matched with the narrow belt transmission structure. The lengths of all groups of belt wheels of the narrow belt transmission structure sequentially increase progressively or decrease progressively. The mail feeding conveyer line needs to be inclined to be matched with a sorting conveyer line, one single wide belt transmission structure cannot be provided with an inclined end matched with the sorting conveyer line, and the single narrow belt transmission structure is poor in transmission capacity. The technical problem can be effectively solved through match between the narrow belt transmission structure and the wide belt transmission structure. The lengths of all groups of belt wheels of the narrow belt transmission structure sequentially increase progressively or decrease progressively, so that an inclined end matched with the sorting conveyer line can be formed objectively. Thus, the mail feeding conveyer line and the sorting conveyer line can be matched in an inclined mode so as to facilitate mail feeding.

Description

A kind of upper pipeline
Technical field
The utility model relates to a kind of logistics conveyer, particularly relates to a kind of upper pipeline.
Background technology
Along with the development of Modern Logistics Technology, the mail sorting work seems more and more important.The sorting of traditional mail is mostly by manually carrying out, its working strength very greatly and efficient very low.Sense of responsibility was inadequate when the express delivery staff that quality is lower sorted, in the situation that extremely irritated, even the situation that violence is sorted appears, when namely the staff sorts client's mail is lost, cause damage to being sorted mail.At present, along with the continuous lifting of express delivery industry employment cost and client to the whether attention of situation of mail external packing breakage, mail automatic sorting technology obtains the especially attention of express delivery industry of mail transport service.But present automatic sorting apparatus mostly cost is very high, and domestic mail transport enterprise especially Express firm can't bear.This state of the art of mail sorting equipment has seriously restricted the especially development of express delivery of China's mail transport service.
For setting up a kind of a kind of mail sorting induction system simple in structure, with low cost, need to research and develop, design a kind of for transmitting mail part pipeline to a kind of mail of mail sorting conveying line.
The utility model content
Technical problem to be solved in the utility model is, part pipeline on a kind of simple in structure, mail of being used for plugging into the mail sorting conveying line is provided.
For solving above technical problem, the technical solution of the utility model is: a kind of upper pipeline, its key is: comprise that the length between every group of belt wheel of described narrow conveyer belt transfer structure is increasing or decreasing successively by being no less than the arrowband transfer structure that two groups narrow conveyer belt transfer structures form and the broadband transfer structure that matches with described arrowband transfer structure.
As improvement of the present utility model, described arrowband transfer structure and broadband transfer structure all are erected on the frame, be provided with motor in described frame, described arrowband transfer structure comprises the arrowband roller that rotates be used to driving described arrowband transfer structure, and described motor is connected by the first sprocket wheel chain structure driven with described arrowband roller.
Further improve as the utility model, described broadband transfer structure comprises the broadband roller that rotates be used to driving described broadband transfer structure, and described broadband roller and described arrowband roller are realized being connected by the second sprocket wheel chain structure.
Further improve as the utility model, described first and second sprocket wheel chain structure is separately positioned on the both sides of described upper pipeline.
As preferred embodiment of the present utility model: the conveyor zones of described broadband transfer structure is provided with the mail-detection device, and described mail-detection device is for detecting grating or photodiode; Described arrowband transfer structure and described broadband transfer structure all are arranged on the frame, and described frame is the square tube section material framework; Described arrowband transfer structure is five groups of Belt Conveying wheels; The arrowband transfer structure of described upper pipeline and/or a side or the both sides of broadband transfer structure are provided with channel-section steel along rib.
By implementing the desirable following useful technique effect of the utility model:
Because upper pipeline need to tilt to cooperate with sorting conveying line, independent broadband transfer structure is difficult to make the beveled end that matches with sorting conveying line; And independent its transfer capability of arrowband transfer structure is more weak.By arrowband transfer structure and the two-part cooperation of broadband transfer structure, can effectively solve above technical barrier.Length between every group of belt wheel of described narrow conveyer belt transfer structure is increasing or decreasing successively, objectively can form a beveled end that matches with sorting conveying line, thereby can allow described upper pipeline tilt to cooperate with sorting conveying line, makes things convenient for reaching the standard grade of mail.
Described motor is connected by the first sprocket wheel chain structure driven with described arrowband roller, and is simple and practical; Described broadband roller and described arrowband roller are realized being connected by the second sprocket wheel chain structure, and structure is simple and practical equally.
Described first and second sprocket wheel chain structure is separately positioned on the both sides of described upper pipeline, ensured that not only the utility model can be simple, practical, and realized the joint-action mechanism under the simple structure, owing to only with a motor-driven, provided cost savings and ensured the uniformity of running work.
The conveyor zones of described broadband transfer structure is provided with the mail-detection device, described mail-detection device is for detecting grating or photodiode, described detection grating or photodiode can detect and be sorted the conveyor zones whether mail has been positioned over the broadband transfer structure, for the further work of system provides foundation.
Described arrowband transfer structure and described broadband transfer structure all are arranged on the frame, and described frame is the square tube section material framework; Described arrowband transfer structure is five groups of Belt Conveying wheels; The arrowband transfer structure of described upper pipeline and/or a side or the both sides of broadband transfer structure are provided with channel-section steel along rib; above structure has all been given prominence to simple, practical and characteristics with low cost of the present utility model, and wherein channel-section steel can not drop out from the side of described upper pipeline for the protection of mail along rib.
Description of drawings
Below in conjunction with Figure of description the utility model is done further detailed description, wherein:
Fig. 1 can practice a kind of mail sorting induction system integrated stand composition of the present utility model;
Fig. 2 is structure chart A of the present utility model;
Fig. 3 is structure chart B of the present utility model;
Fig. 4 is the sorting transport trolley structure chart A of mail sorting induction system;
Fig. 5 is the sorting transport trolley structure chart B of mail sorting induction system;
Fig. 6 is the lift composition A of mail sorting induction system;
Fig. 7 is the lift composition B of mail sorting induction system.
The specific embodiment
Fig. 1 can practice a kind of mail sorting induction system integrated stand composition of the present utility model.As shown in Figure 1, a kind of mail sorting induction system, comprise that described control and management unit comprises for the sorting conveying line 5 that mail is carried out automatic sorting, for delivery of the control and management unit of mail to described upper the pipeline 4 of upper pipeline 4 of described sorting conveying line 5 and control and management and sorting conveying line 5:
Be used for obtaining the addresses of items of mail acquisition module that is sorted mail address information,
Be used for induction and be sorted the mail induction module whether mail enters described upper pipeline 4,
Be used for controlling described upper pipeline 4 transfers and be sorted mail to upper control module of described sorting conveying line 5, and
Be used for controlling 5 pairs of mails of the described sorting conveying line mail processed control module of reaching the standard grade/roll off the production line of reaching the standard grade or roll off the production line.
In the present embodiment, described upper pipeline 4 is two.In fact, the specific works amount of sort mail as required, upper pipeline can arrange a plurality of.
In described mail sorting induction system, also comprise for receive guiding be sorted mail flows to and branch's pipeline of being used in conjunction with described sorting conveying line 5, described branch pipeline comprises that the mail that cooperates successively with described sorting conveying line 5 exports slide plate 6 and mail collecting box 7.In the present embodiment, described branch pipeline is 21.In fact, according to actual needs, can increase the quantity length that can prolong described sorting conveying line 5 of sorting transport trolley 50, to increase the quantity of sorting address.The all corresponding addresses of items of mail that should be sorted of each bar branch pipeline, the mail of corresponding address can be thrown in being sorted pipeline 5 course of conveying on the mail outlet slide plate 6 of corresponding address automatically, and enter into corresponding mail collecting box 7, finish the mail sorting work.
Particularly, described mail sorting induction system can obtain the address for service information of each envelope mail by the addresses of items of mail acquisition module, wherein said addresses of items of mail acquisition module is any one or more than one the combination in phonetic entry identification module, video identification input module, radio frequency identification input module, bar-code identification input module, keyboard input module, the mouse click selection module, what select in the present embodiment is the phonetic entry identification module, and described phonetic entry identification module comprises phonetic entry microphone 2.After operator 3 reads the address for service that is sorted on the mail, offer computer control cabinet 1 by voice and described phonetic entry microphone 2, addresses of items of mail information is by typing.
The technology that adopts at present phonetic entry identification module, video identification input module, radio frequency identification input module, bar-code identification input module, keyboard input module or mouse to click to select module to implement management control is widely used, just be called for the Chinese invention patent of CN1248790C discloses a kind of name on April 5th, 2006 such as Granted publication number: the patented technology of " being used for providing speech recognition system and the method based on phone of mail and packages information " namely belongs to the embodiment of phonetic entry identification module.
Granted publication number is called for the Chinese invention patent of CN101132866B discloses a kind of name on April 18th, 2012: " method that handles postal matter by optical character identification OCR " and Granted publication number for the Chinese utility model patent of CN1247321C on March 29th, 2006 disclosed name be called: " the Video coding station that is used for mail automatic wire charging/coil inserting apparatus " all discloses the technical scheme that adopts video identification technology identification addresses of items of mail information.Above two kinds of technical schemes namely can be considered the embodiment of video identification input module.
In addition, the grant number notification number is that the Chinese invention patent of CN101213030B discloses a kind of name on July 6th, 2011 and is called: the patented technology of " mail sorting systems and method ", this technical scheme namely are to adopt the embodiment of REID.
Also have, it is commonplace that bar-code identification input module, keyboard input module or mouse click select module etc. also to use at present identification control field, therefore, at this whole addresses of items of mail acquisition module technology is repeated no more.
After described addresses of items of mail acquisition module obtains addresses of items of mail information, still need and confirm by the mail induction module whether corresponding mail has entered upper pipeline.At this moment, operator 3, is provided with the mail-detection device and sees Fig. 2 such as detecting grating 44(by the conveyor zones that mail is put into the broadband transfer structure of upper pipeline 4 that is sorted of typing address information in this zone) or photodiode etc.The mail that is sorted is in case confirmed to enter upper pipeline by the mail induction module, the motor 48(that then goes up in the part control module sees Fig. 3) or cylinder just can control described upper pipeline 4 transfers and be sorted mail to described sorting conveying line 5, simultaneously, the mail control module of reaching the standard grade/roll off the production line then can be controlled sorting conveying line 5 and implements the mails reception work of reaching the standard grade.
In addition, the mail address information that control module then can obtain according to the addresses of items of mail acquisition module of reaching the standard grade/roll off the production line starts line traffic control under the mail: the mail that is sorted is in described sorting conveying line 5 circulations, in case arrive certain preposition (position that need to separate according to addresses of items of mail information sorting), then mail namely can be got rid of down automatically.Mail under quilt gets rid of slides into described mail collecting box 7 by the mail outlet slide plate 6 of described branch pipeline, finishes the sorting of mail.
In the present embodiment, described sorting conveying line 5 comprises the sorting transport trolley 50 of some flexible connections, and integral body ringwise.Be provided with as required different sorting addresses along described sorting conveying line 5, under the control of control module is reached the standard grade/rolled off the production line to described mail, be sorted mail and automatically rolled off the production line in corresponding address and enter into described mail collecting box 7.
Wherein, described sorting transport trolley 50 can wholely consist of plane annular, namely overlooks to be annular; Certainly, in the practical operation, also can consist of the side annular, overlooking is a plane.For saving cost, improve effect in the present embodiment, selection be the plane annular structure.
Above-mentioned sorting induction system has been done introduce after, understand again the utility model that is applied to this sorting induction system and be a kind of upper pipeline and will more make things convenient for, easily.The below highlights specific embodiments of the present utility model:
As shown in Figure 1 to Figure 3, be sorted the operation of reaching the standard grade of mail for convenient upper 4 pairs of part pipelines, described upper pipeline 4 is an angle of inclination with described sorting conveying line 5 integral body and cooperates.
Such as Fig. 2, shown in Figure 3, described upper pipeline 4 comprises by being no less than the arrowband transfer structure (being illustrated in figure 2 as five groups) that two groups narrow conveyer belt transfer structures 41 form and the broadband transfer structure that matches with described arrowband transfer structure, length between 41 every groups of belt wheels of described narrow conveyer belt transfer structure successively increasing or decreasing (for Fig. 2, see from front to back it is to increase progressively successively), described mail induction module comprises the mail-detection device, and the conveyor zones of described broadband transfer structure is provided with described mail-detection device and namely detects grating 44.Described broadband transfer structure is provided with rotating wide belt 45.
Described arrowband transfer structure and broadband transfer structure all are erected on the frame 43, are provided with motor 48 in this frame 43.
As shown in Figure 3, described motor 48 drives the arrowband roller turn by the first sprocket wheel chain structure 47, and described belt roller is coaxial with the driven pulley of described the first sprocket wheel chain structure 47.After motor 48 rotated, described narrow conveyer belt transfer structure 41 just was driven entry into service.
As shown in Figure 2, the another side of part pipeline 4 is provided with the second sprocket wheel chain structure 42 equally on described, and wherein the arrowband roller is coaxial with drive sprocket 421; 422 of driven sprockets are coaxial with the broadband roller.After motor 48 started, the broadband roller also can correspondingly rotate, and rotated thereby drive wide belt 45.
Above structure is very simple, practical.In addition, in order to save cost, the side of described upper pipeline 4 is provided with channel-section steel along rib 46.
By implementing above structure, the length between 41 every groups of belt wheels of especially described narrow conveyer belt transfer structure is increasing or decreasing successively, thereby can form the beveled end that can match with described sorting conveying line 5.
As shown in Figure 4, described sorting transport trolley 50 is provided with the friction plate 505 with friction pulley 503 frictional fit, and motor 501 is connected with friction pulley 503 by belt transmission structure 502.Contact roller 504 is symmetricly set on the both sides of described friction plate 505 with described friction pulley 503.Described motor 501 is fixed on ground or the equipment base, can drive described belt transmission structure 502 runnings after motor 501 starts, and and then drives described friction pulley 503 and rotate.Under the effect of described contact roller 504, described friction pulley 503 produces relative motion with described friction plate 505.Because described friction pulley 503 is relatively fixing, is fixed on described friction plate 505 on the described sorting transport trolley 50 and just begins to drive sorting transport trolley 50 and move ahead, thereby realize the running of whole sorting conveying line 5.
As shown in Figure 5, described sorting transport trolley 50 realizes being flexibly connected (described connecting rod 509 is movably connected in respectively two sorting transport trolleys 50 by bearing front-end and back-end) by connecting rod 509, also be provided with support wheel 506 and locating wheel 507 on the described sorting transport trolley 50, described support wheel 506 cooperates with the upper surface of vehicle guide 508, and described locating wheel 507 cooperates with the medial surface of described vehicle guide 508.After described sorting transport trolley 50 runnings, described locating wheel 507 cooperates by the medial surface with described vehicle guide 508 realizes the location running, can guarantee that described sorting transport trolley 50 is along set track continuous running.
On the described sorting conveying line 5, sorting is provided with elasticity between the transport trolley 50 and hides 510, with the unlikely joint gap that falls into described sorting transport trolley 50 of protection mail.
As shown in Figure 6, described sorting transport trolley 50 lower ends are provided with the wheel 54 of conflicting, the upper end is provided with mail and reaches the standard grade/roll off the production line for example belt transfer structure of conveying mechanism, the device that is used in the present embodiment transfer is conveyer belt 51, reach the standard grade/roll off the production line at described mail and be provided with power drive mechanism 53 between conveying mechanism and the described conflict wheel 54, the described mail control module of reaching the standard grade/roll off the production line comprises elevating mechanism 55, the bottom of described sorting transport trolley 50 is provided with several with described conflict wheel 54 elevating mechanisms that are used in conjunction with 55, and described elevating mechanism 55 is located at and need to reaches the standard grade or roll off the production line on the position of processing mail.Described mail reach the standard grade/roll off the production line conveying mechanism upper/direction of primary motion of the lower part direction of motion and described sorting transport trolley 50 is an angle.The described mail conveying mechanism of reaching the standard grade/roll off the production line comprises the cylinder 52 that is connected with described power drive mechanism 53 and the conveyer belt 51 that cooperates with described cylinder 52.
About actuating unit:
Described power drive mechanism 53 comprise the bevel gear pair 56 that is connected by power transmission shaft with described conflict wheel 54, with the chain sprocket drive mechanism 57 that described bevel gear pair 56 is connected by power transmission shaft, described chain sprocket drive mechanism 57 and the described mail conveying mechanism of reaching the standard grade/roll off the production line is in transmission connection.
Wherein, described bevel gear pair 56 comprises three bevel gears, wherein first and second bevel gear 561,562 cooperates with third hand tap gear 563 respectively, described conflict wheel 54 is two and connects with first and second bevel gear 561,562 respectively, and described third hand tap gear 563 connects with chain sprocket drive mechanism 57 by power transmission shaft.
After implementing above scheme, the power that friction by described conflict wheel 54 and lifting conflict plate 550 obtains just is converted to mail reach the standard grade/the roll off the production line rotation of conveying mechanism, described mail reach the standard grade/the roll off the production line rotation direction of conveying mechanism is then vertical with described sorting conveying line 5 direction of primary motions or be certain other angles, thereby can allow be sorted mail and reach the standard grade or break away from described sorting conveying line 5, finishing the sorting operation of rolling off the production line.
About elevating mechanism:
Described elevating mechanism 55 comprises holder 554, can take turns the 54 lifting conflict plates 550 that cooperate and be located at linkage between described lifting conflict plate 550 and the holder 554, that be used for the described lifting conflict of lifting plate 550 with described conflict, described linkage and actuating unit for example cylinder 553 are connected, and described cylinder 553 is electrically connected with described computer control cabinet 1 by magnetic valve.
Wherein, described linkage comprises first and second linkage 551,552, described cylinder 553 is located on the described holder 554, the two ends of described first connecting rod mechanism 551 are flexibly connected with described lifting conflict plate 550 and holder 554 respectively, the two ends of described second connecting rod mechanism 552 are flexibly connected with the cylinder rod of described lifting conflict plate 550 and described cylinder 553 respectively, described second connecting rod mechanism 552 also is flexibly connected with described holder 554, and described first and second linkage 551,552 is connected to the two ends of described lifting conflict plate 550.
When the described elevating mechanism 55 of needs rises, 552 motions of the described second connecting rod of described cylinder 553 promotions mechanism, because the two ends of described first connecting rod mechanism 551 are flexibly connected with described lifting conflict plate 550 and holder 554 respectively, after one end of described second connecting rod mechanism 552 was promoted by described cylinder 553, described lifting conflict plate 550 just began lifting.Be sorted mail rolled off the production line finish sorting operation after, the cylinder rod of described cylinder 553 is retracted, described lifting conflict plate falls for 550 times.
After described mail sorting induction system started, the sorting transport trolley 50 of flexible connection was along the circular orbit iterative motion.Described sorting transport trolley 50 lower ends are provided with the wheel 54 of conflicting, and need to roll off the production line when finishing sorting when being sorted mail, and the elevating mechanism 55 of corresponding lower line position just rises under the control of described computer control cabinet 1 and with described conflict wheel 54 contacts.Because described sorting transport trolley 50 is along the circular orbit iterative motion, described conflict wheel 54 just with described elevating mechanism 55 on lifting conflict plate 550 contact and frictional rotation.54 transmissions by a series of transmission mechanism of described conflict wheel finally drive the conveying mechanism rotation of reaching the standard grade/roll off the production line of described mail, and the described mail conveying mechanism of reaching the standard grade/roll off the production line comprises the embodiments such as wide belt, roller group, is chosen as in the present embodiment wide belt.Because described mail reach the standard grade/the roll off the production line rotation direction of conveying mechanism just in time is an angle with the direction of primary motion of described sorting transport trolley 50, be sorted mail and reach the standard grade or break away from described sorting conveying line 5 thereby can allow, finish the operation of reaching the standard grade or roll off the production line.
In addition, since the lifting conflict plate 550 of described elevating mechanism 55 be located at described conflict wheel 54 below, in the time of need to sorting operation, described lifting conflict plate 550 rises and conflicts and the generation friction with described conflict wheel 54, can utilize the gravity of sorting transport trolley 50 fully and produce more intense frictional force, its frictional drive better effects if.Also have, produce friction even conflicts with described conflict wheel 54 by described lifting conflict plate 550 lift simultaneously, this kind scheme obviously can be so that the frictional force adjustment of described conflict wheel 54 have increased a kind of adjustment mode, namely can lean on the gravity of described sorting transport trolley 50, also can realize by the lift of adjusting described lifting conflict plate 550, adjust selection convenient.
Because being sorted mail need to roll off the production line at different location points according to different addresses and realize that sorting operation, the bottom of described sorting transport trolley 50 are provided with several with described conflict wheel 54 elevating mechanisms that are used in conjunction with 55.Like this, being sorted mail need to roll off the production line at certain location point, and when realizing the sorting operation, the elevating mechanism 55 of this relevant position namely can rise under the control of described computer control cabinet 1, and therefore mail is rolled off the production line, and realizes sorting.
Must be pointed out some non-limiting illustrating that above-described embodiment is just made the utility model.But person of skill in the art will appreciate that, do not departing under aim of the present utility model and the scope, can make modification to the utility model, replace and change, these modifications, replacement and change still belong to protection domain of the present utility model.

Claims (10)

1. go up the part pipeline for one kind, it is characterized in that: comprise that the length between every group of belt wheel of described narrow conveyer belt transfer structure (41) is increasing or decreasing successively by being no less than the arrowband transfer structure that two groups narrow conveyer belt transfer structures (41) form and the broadband transfer structure that matches with described arrowband transfer structure.
2. a kind of upper pipeline according to claim 1, it is characterized in that: described arrowband transfer structure and broadband transfer structure all are erected on the frame (43), be provided with motor (48) in described frame (43), described arrowband transfer structure comprises the arrowband roller that rotates be used to driving described arrowband transfer structure, and described motor (48) is in transmission connection by the first sprocket wheel chain structure (47) with described arrowband roller.
3. a kind of upper pipeline according to claim 2, it is characterized in that: described broadband transfer structure comprises the broadband roller that rotates be used to driving described broadband transfer structure, and described broadband roller and described arrowband roller are realized being connected by the second sprocket wheel chain structure (42).
4. a kind of upper pipeline according to claim 3 is characterized in that: described first and second sprocket wheel chain structure (47,42) is separately positioned on the both sides of described upper pipeline.
5. described a kind of upper the pipeline of any one claim in 4 according to claim 1, it is characterized in that: the conveyor zones of described broadband transfer structure is provided with the mail-detection device.
6. a kind of upper pipeline according to claim 5, it is characterized in that: described mail-detection device is for detecting grating (44) or photodiode.
7. a kind of upper pipeline according to claim 6, it is characterized in that: described arrowband transfer structure and described broadband transfer structure all are arranged on the frame (43), and described frame (43) is the square tube section material framework.
8. a kind of upper pipeline according to claim 7, it is characterized in that: described arrowband transfer structure is five groups of Belt Conveying wheels.
9. a kind of upper pipeline according to claim 8 is characterized in that: the arrowband transfer structure of described upper pipeline and/or a side or the both sides of broadband transfer structure are provided with channel-section steel along rib (46).
10. described a kind of upper the pipeline of any one claim in 4 according to claim 1 is characterized in that: the arrowband transfer structure of described upper pipeline and/or a side or the both sides of broadband transfer structure are provided with channel-section steel along rib (46).
CN 201220384378 2012-08-06 2012-08-06 Mail feeding conveyer line Expired - Lifetime CN202752244U (en)

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CN 201220384378 CN202752244U (en) 2012-08-06 2012-08-06 Mail feeding conveyer line

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105149231A (en) * 2015-09-15 2015-12-16 上海邮政科学研究院 Method for controlling three-section mail supply table matched with halved belt sorter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105149231A (en) * 2015-09-15 2015-12-16 上海邮政科学研究院 Method for controlling three-section mail supply table matched with halved belt sorter
CN105149231B (en) * 2015-09-15 2017-12-12 上海邮政科学研究院 A kind of three-stage piece supplying table control method supporting for halved belt sorter

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