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WO1999048622A1 - Systeme de triage de paquets a bande transporteuse avec maillons modulaires - Google Patents

Systeme de triage de paquets a bande transporteuse avec maillons modulaires Download PDF

Info

Publication number
WO1999048622A1
WO1999048622A1 PCT/US1999/003884 US9903884W WO9948622A1 WO 1999048622 A1 WO1999048622 A1 WO 1999048622A1 US 9903884 W US9903884 W US 9903884W WO 9948622 A1 WO9948622 A1 WO 9948622A1
Authority
WO
WIPO (PCT)
Prior art keywords
packages
conveyor belt
sortation system
belt
package
Prior art date
Application number
PCT/US1999/003884
Other languages
English (en)
Inventor
James L. Layne
Michael J. Seiler
Mark T. Johnson
Original Assignee
Span Tech Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Span Tech Corporation filed Critical Span Tech Corporation
Publication of WO1999048622A1 publication Critical patent/WO1999048622A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C3/00—Sorting according to destination
    • B07C3/02—Apparatus characterised by the means used for distribution
    • B07C3/08—Apparatus characterised by the means used for distribution using arrangements of conveyors
    • B07C3/082—In which the objects are carried by transport holders and the transport holders form part of the conveyor belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C3/00—Sorting according to destination

Definitions

  • the present invention relates to the field of package sortation systems, and more particularly to a coded package or the like sortation system, and to a related method for sorting coded packages for distribution.
  • an important aspect of the effort to improve this technology is to provide a package or the like sortation system and related method capable of transporting, sorting and distributing the increasing volume of such articles within a defined shorter period of time.
  • the desired approach should be to eliminate the complexity, especially with regard to having to provide a series of tilt trays, and instead go to a simple conveyor belt capable of side and elevational flexing action and supported at an angle to the horizontal plane to form a simple carousel for the articles.
  • a simple controlled ejector to positively discharge the articles from the conveyor belt without tilting at the distribution stations is desirable. As a result, increased system speed, efficiency and adaptability, as well as lower cost and maintenance are attained.
  • Another object of the present invention is to provide a simplified sortation system that is particularly adapted to utilize an endless conveyor belt capable of side and elevational flexing action.
  • Still another object of the present invention is to provide a novel and improved method of sorting coded packages according to a selected parameter .
  • Yet another object of the present invention is to provide a sortation system which utilizes coded information on the packages, or other articles, and a controller to determine a proper distribution station for ejection of the packages according to a selected parameter of the coded information.
  • Another object of the present invention is to provide a method of sorting coded packages including positioning the packages in a plane at an angle to the horizontal plane on a conveyor belt capable of side and elevational flexing action, scanning the packages to read the selected parameter and ejecting the packages at the proper distribution station according to the selected parameter.
  • It is yet another object of the present invention to provide a method of sorting coded packages including the step of extending a pivotal blade outwardly to cut across the angled plane of the positioned packages for ejecting the packages at the proper distribution station.
  • an improved sortation system for sorting coded packages according to a selected parameter.
  • the coded package sortation system includes a continuous, side and elevational flexing conveyor belt for supporting and moving the packages on a bottom edge in an endless path.
  • the conveyor belt defines a carousel and a scanner is used to read selected coded parameters on each package, and in response a plurality of controllable ejectors positively discharges the packages from the carousel at the proper distribution station located around the carousel . While the preferred embodiment of the present invention is described as being most efficiently used in an environment of sorting packages, it is clear that other like articles can be sorted utilizing the same principles in accordance with the broadest aspects of the invention.
  • the continuous conveyor belt is formed by a plurality of interconnecting modular links and a plurality of transverse connectors or cross rods 7 to retain the modular links together.
  • the modular links thus allow a degree of longitudinal freedom to the conveyor belt. More specifically, the provision of the modular links allows the conveyor belt to compress differentially along the cross rods sideways as well as up and down, thus facilitating smooth traversal of a bend and/or an incline/decline by the conveyor belt even when supported at an angle to the horizontal.
  • the modular links, including side links formed with the inclusion of depending arms and integral locking tabs, as well as cooperating guide means, are more fully explained in the issued U.S. Patents Nos.
  • the conveyor belt guide means of the present invention travels in an endless path that defines a carousel, with a plurality of distribution stations being positioned around the same.
  • the guide means is positioned on the frame of the system such that the plane of the conveyor belt forms an angle to the horizontal plane, thus providing support for the packages during transportation to the selected distribution station, while at the same time limiting the overall size or footprint of 'the sortation system.
  • the angle formed depends upon the particular application and specifications of the sortation system, and can be between 10° and 80° to the horizontal plane. The preferred embodiment is illustrated as approximately 60°.
  • a stationary ledge is positioned adjacent the lower edge of the conveyor belt for further supporting the packages. It is contemplated that the ledge extends completely around the periphery of the carousel forming a track for support of the edge of each package.
  • a plurality of transverse pushers extend across the upper surface of the conveyor belt and work with the ledge to guide and properly position the packages for eventual discharge.
  • the ledge provides sufficient frictional drag to retard the packages, and thus assure alignment of the trailing edge of each package so as to engage the corresponding pushers. This relationship provides alignment of the ejector with the trailing edge of the package. The belt and pushers are monitored so that there is always registration with the distribution stations .
  • a driver for the belt includes a drive motor, shaft and multiple sprockets to impart motion across the full width.
  • a scanner is placed near the conveyor belt for reading the coded parameters from each passing package.
  • a controller receives the signal for processing. The selected parameter on the package determines the proper distribution station for ejection.
  • the distribution stations each include an ejector having a pivotal blade and a corresponding actuator for extending the blade outwardly to cut across the angled plane of the conveyor belt for positively discharging the packages from the carousel.
  • a plurality of valves control the actuators in response to the controller.
  • the discharged packages are collected at the individual distribution stations in receptacles supported by laterally extending support arms mounted on the frame adjacent the ledge.
  • a method of sorting coded packages according to a selected parameter for distribution includes the steps of positioning the packages in a plane at an angle to the horizontal plane on a continuous conveyor belt capable of side and elevational flexing action, driving the belt in an endless path, providing a plurality of distribution stations around the path, scanning the packages to determine the selected parameter and ejecting each package at its determined distribution station.
  • the method also includes the steps of monitoring the position of the conveyor belt around the endless path and controlling the ejection of the packages dependent upon the scanning step and the monitoring step.
  • the monitoring step is accomplished by sensing the presence of the transverse pushers 10 moving around the path and a home indicator. Based on the location of the pushers and the speed at which the conveyor belt is driven, the controller determines the appropriate time to eject the packages at the distribution stations.
  • Figure 1 is a perspective view of the package sortation system of the preferred embodiment of the present invention having the center portion 11 broken away;
  • Figure 2 is an end view of the sortation system of the preferred embodiment
  • Figure 3 is a cross sectional view of the package sortation system at the broken away mid- section showing a driver and a distribution station;
  • Figure 4A is a top view, partially broken away, and showing a coded package approaching a distribution station and an ejector in the normal position;
  • Figure 4B is an illustration showing the ejector partially extended across the angled plane of the conveyor belt and contacting the lower portion of the coded package
  • Figure 4C is an illustration showing an ejector returning to a home position and a coded package dropping away from the ledge into a collection receptacle
  • Figure 5 is a partial and enlarged perspective view showing a modular link conveyor, upward extending fins forming the pusher for engaging a package and two distribution stations;
  • FIG. 6 is a schematic block diagram of the control circuit of the sortation system.
  • the sortation system 10 includes a continuous, modular conveyor belt 11 capable of side and elevational flexing action supported by a frame, generally designated by reference numeral 12.
  • the plane of the conveyor belt is at an angle ⁇ of approximately sixty degrees (60°), to the horizontal plane H.
  • the angle can be selectively established at any suitable angle, but preferably approximately 60°, as illustrated.
  • the frame 12 in the preferred embodiment is elongated, and overall is generally rectangular in shape.
  • Vertically extending legs 14 and a conveyor belt guide means 15 form a part of the frame.
  • the length of the sides and the radius of the ends can be adjusted to fit the particular use.
  • a 13 plurality of distribution stations DS are located along the sides, as well as at the curved ends, if necessary.
  • the shape of the sortation system 10 can be selected to accommodate any turns and to include any number of sides and ends for additional sorting capacity.
  • braces 17, 18 are attached at both ends and along the sides of the frame 12. These braces form a part of the frame 12, as well as support suitable receptacles or containers for the packages . These receptacles define the distribution stations DS and will be described in more detail below.
  • the frame 12 includes two guide rails 21, 22 to guide the conveyor belt 11 at its lateral edges around the carousel. As is apparent, both longitudinal and transverse beams 23 are provided as a part of the frame (see Figures 1 and 2) .
  • the guide rails are fixed at the desired lateral spacing for the belt 11.
  • Frustoconical support assemblies 24 of the frame 12 positioned at each end of the system 10 are operative to cause the conveyor belt 11 to turn and define the ends of the carousel.
  • the conveyor belt 11 includes a plurality of transverse pushers 13 in the form of raised fins (see Figure 5) extending across the upper surface of the belt to engage and drive the packages P around the carousel.
  • a ledge 25 is mounted on the frame 12 adjacent the lower edge of the conveyor belt to provide a stationary support surface or track for the bottom edge of the packages P. The ledge provides a frictional drag sufficient to retard the packages to assure contact with the transverse pushers 13 for registration, as will be discussed more fully below.
  • the conveyor belt 11 in the preferred embodiment is formed by a plurality of interconnecting modular links 26 and a plurality of transverse connectors 27 to hold the modular links together.
  • the modular links 26 allow the required degree of freedom to the conveyor belt. More specifically, the provision of the modular links 26 allows the conveyor belt 11 to compress differentially for side and elevational flexing action. This action facilitates smooth traversal of the sides, as well as the frustoconical ends by the conveyor belt 11, even given the fact that it is supported at the angle ⁇ to the horizontal plane H.
  • the belt 11 includes modular center links 26 and side links 28 (see Figure 5) , the later being formed by the inclusion of depending arms and integral locking tabs (not numbered) .
  • the side links 28 engage the guide rails 21, 22 in the preferred embodiment, as more fully explained in the issued U.S. Patents Nos. 4,953,693 and 5,031,757 owned by the assignee of the 15 present application and previously incorporated by reference above.
  • dual synchronized drivers 30 provide the driving force for the conveyor belt 11.
  • Each driver 30 includes a motor 31 connected to a drive shaft 32.
  • at least two conveyor belt engaging sprockets 33 are utilized on the drive shaft 32 to impart the motion to the belt 11.
  • the belt 11 is assured of being tensioned along said side runs and allowed to compress as necessary around the frustoconical ends.
  • other motor, drive shaft and sprocket combination meeting this basic criteria can be used. As further shown in FIG.
  • a plurality of ejectors 35 are positioned along at least the two sides of the carousel for ejecting the moving packages P at one of the plurality of distribution stations DS, DS n as shown by action arrows A (some distribution stations not shown in the cut-away area of FIG. 1 for clarity) .
  • each distribution station DS, DS n includes a pair of laterally extending support arms 36 positioned adjacent the lower edge of the conveyor belt 11.
  • a 1 6 receptacle, such as bag 37 is removeably attached to the support arms 36 for receiving the ejected package P.
  • Each bag has an upper portion that folds over and is secured to the adjacent support arm 36 by a rod 38 and a clamp 39 in the form of a plastic tube with an open side. As is apparent, the upper portion of the bag 37 is folded over each adjacent rod 38 and the clamp 39 is then slipped and snapped over it due to the inherent resiliency of the tube to provide the clamping action.
  • a controller 39 (shown schematically in FIG. 6) activates the ejectors 35 in response to the selected parameter on the package P at the proper distribution station DS, DS n around the carousel.
  • a scanner 40 is provided spaced from the conveyor belt 11 for reading the coded label L that identifies the selected destination parameter.
  • the label L is a UPC label and the scanner 40 can be one of several available capable of locating and reading the code. It should be realized that each label L on the coded package P activates the controller 20 during continuous movement of the packages P around the carousel and the packages are ejected on the fly in accordance with the selected parameter.
  • the scanner 40 may be mounted on a cantilever arm 41 above the conveyor belt 11.
  • the scanner 40 may be mounted at 17 any location around the carousel and m any manner sufficient to allow proper scanning of the coded packages P.
  • manual input by a keyboard can be used (not shown) .
  • each ejector 35 includes a pivotal blade 43 and a corresponding actuator in the form of a cylinder 44, 44 n for extending the blade outwardly to cut across the angled plane of the conveyor belt 11 for ejecting the packages P at the selected distribution station. More specifically, the pivotal blade 43 is mounted to the frame 12 on a pivot pm 45. It is positioned at the upstream end of each distribution station DS, DS n and in juxtaposition to the support surface of the ledge 25. This arrangement allows for a sweeping action across the ledge engaging the bottom or lower edge of the package P.
  • each actuator 44 includes a pneumatic cylinder having a clevis 46 attached to the pivotal blade 43.
  • actuation of each cylinder 44, 44 n by the controller 39 is in response to valves 53, 53 r that apply the air pressure at the correct level to rapidly pivot the blade 43 about the pivot pm 45.
  • the close, rapid sweeping action of the blade across 18 the support surface of the ledge 25 kicks the lower end of the package P off the ledge. From this point, the package P simply falls by gravity into the selected bag 37.
  • this minimal contact with the packages limits the amount of energy added to the packages P during ejection. In turn, there is improved control as the package P enters the bag.
  • the pivotal blade 43 is retracted as the package P, pushed by the transverse pusher 13, approaches the distribution station DS (see action arrows C in FIG. 4A indicating the direction of the approaching packages) .
  • the controller 39 activates the cylinder 44 (see action arrow D) the blade 43 pivots outwardly (see action arrow E) , thereby contacting and kicking the package P off of the ledge 25, as shown by action arrows F.
  • the package P falls lower end first into the bag 37 (see action arrows I) as the blade 43 returns to the normal position (see action arrow G) to await the next package in-line.
  • the packages are first positioned on the conveyor belt 11 at a loading station LS, just upstream of the first distribution station DS .
  • the loading can be manual or by any of the known automatic arrangements .
  • the UPC label L may be in any outwardly facing orientation 19 since the scanner 40 locates and then reads it.
  • any size package P, or similar article can be used to practice the method greatly enhancing the adaptability of the system.
  • any packages P from a single letter size envelope to a bulk box mailer, and in any combination, are used to practice the invention.
  • the packages P are placed one at a time on the conveyor belt 11 with the bottom edge resting on the ledge 25.
  • the belt 11 is mounted so as to be at an angle ⁇ (preferably 60°) to the horizontal plane H (see Figure 2) .
  • the conveyor belt 11 is modular, formed of the plastic links 26, 28 to form an upper conveying surface with low tribological (frictional) characteristics. The shifting of the links allow the side and elevational flexing action, as set forth above. As the conveyor belt 11 is driven in an endless path defining the carousel, the side links slide easily along the guide rails 21, 22, which may include a plastic wear strip (see Figure 5) .
  • the packages P are presented in turn to the scanner 40 for detection of the code, and delivered to the proper distribution stations DS, DS n in a smooth and efficient fashion.
  • the operation of the conveyor belt 11 in this manner thus provides for maximum speed, as well as exceptional reliability.
  • the modular conveyor belt 11 is particularly well suited for accommodating 20 the shifting and turning of the links as the endless path to deliver the packages P is traversed.
  • the ledge 25 forming the track around the carousel is fabricated of stainless steel or the like, and thus provides a frictional drag greater than the conveying surface of the plastic links 26, 28.
  • the differential drag is sufficient to slightly retard the packages as they leave the loading station LS (see Figure 1) .
  • the trailing edge of each package slides back against the corresponding transverse pusher 13 before reaching the first in-line distribution station DS (see action arrow S in Figure 1) . This allows desirable random positioning of the package P between the pushers 13 and still accomplish registration for proper ejection at the proper distribution station DS .
  • sensors 51 are provided near the upstream end of each side of the carousel in order to detect each passing transverse pusher 13 (see FIG. 1) . As each pusher 13 passes and lifts the sensing finger, the respective sensor 51 sends a signal to the controller 39 (see FIG. 6) . 21
  • a home position sensor 52 is activated by a low profile cam 52a that clears the sensing finger of the sensor 51 but is operative to engage the sensing finger of said sensor 52.
  • a home position signal is sent to the controller 39 each time the conveyor belt 11 completes a revolution around the carousel, thus further monitoring the operation of the conveyor belt 11.
  • the scanned parameters for each individual package P are continually transmitted to the controller 39 for processing.
  • the controller 39 initiates the ejection of the selected package P at the appropriate distribution station DS .
  • the ejection is accomplished by actuating the corresponding blade 43.
  • the controller 39 includes a memory module to store the signals from the scanner 40 and the sensors 51, 52, so as to allow the ejection of multiple packages at any number of distribution stations DS, DS n simultaneously as the belt 11 continuously moves around the carousel.
  • the sortation system 10 gains substantial benefits from use of the modular conveyor belt 11 capable of side and elevational flexing action.
  • the belt moves in an 22 endless path to form a carousel with the multiple distribution stations DS, DS n positioned around it.
  • the ledge 25 forms a track around the carousel to support the bottom edge of the packages P. From the loading station LS to the first in-line distribution station DS, the ledge 25 provides sufficient differential frictional drag to retard the packages and assure alignment with the adjacent pusher 13. This action in combination with the signals from the sensors 51, 52, allows the controller 39 to provide proper registration between the packages P and the distribution stations DS, DS n .
  • the scanner 40 reads the UPC information on the labels L to allow the controller 39 to determine the proper station for ejection of each package.
  • the bags 37 are held on the arms 36 by the rod 38 and clamp 39 combination for easy, but secure installation and removal. In essence, a simple and inexpensive sortation system 11, that is also capable of more efficient and economical operation is the result.

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  • Discharge Of Articles From Conveyors (AREA)

Abstract

La présente invention concerne un système (10) et une technique de triage pour paquets codés (P) qui fait intervenir une bande transporteuse continue (11) avec des maillons modulaires (26) qui absorbent les flexions dans le plan latéral et vertical. Un bâti (12) supporte la bande transporteuse (11) à maillons modulaires de telle sorte que le plan de la bande fasse un angle par rapport au plan horizontal tout au long de son déplacement en continu. Un rebord stationnaire (25) solidaire du bâti (12) exerce une force de frottement différentielle suffisante pour ralentir les paquets (P) et les aligner sur une pluralité de nervures transversales (13) qui assurent la progression des paquets. Un scanner (40) lit l'information codée (L) apposée sur les paquets (P) et un contrôleur (39) localise les stations de distribution (DS) vers lesquelles les paquets (P) doivent être éjectés selon un paramètre sélectionné au moyen de l'information codée. Des soupapes à commande pneumatique (35) agissent sur des vérins pneumatiques (44) et sur des lames pivotantes (43) correspondantes qui éjectent les paquets (P) dans des stations de distribution (DS) déterminées. Des sacs collecteurs (37) disposés à la périphérie de la bande transporteuse (11) et du rebord (25) au niveau de chacune des stations de distribution (DS) recueillent les paquets éjectés (P) en vue d'opérations de triage et de distribution subséquentes.
PCT/US1999/003884 1998-03-25 1999-02-24 Systeme de triage de paquets a bande transporteuse avec maillons modulaires WO1999048622A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4777598A 1998-03-25 1998-03-25
US09/047,775 1998-03-25

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WO1999048622A1 true WO1999048622A1 (fr) 1999-09-30

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Cited By (15)

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Publication number Priority date Publication date Assignee Title
NL2000801C2 (nl) * 2007-08-10 2009-02-11 Eurosort B V Sorteerinrichting.
CN108745918A (zh) * 2017-05-26 2018-11-06 安徽省通信息科技有限公司 一种超高速分拣系统
CN108816777A (zh) * 2017-05-26 2018-11-16 安徽省通信息科技有限公司 一种超高速分拣方法
CN109013358A (zh) * 2018-07-10 2018-12-18 东莞理工学院 一种物流智能分拣装置
CN109225904A (zh) * 2018-10-09 2019-01-18 湖北新日电动车有限公司 一种电动车包装自动分拣输送线
CN110090804A (zh) * 2019-05-07 2019-08-06 杭州祥龙物流设备科技股份有限公司 一种分拣道口及设备
WO2019238030A1 (fr) * 2018-06-12 2019-12-19 北京极智嘉科技有限公司 Système et procédé de tri de colis
CN111112131A (zh) * 2019-12-24 2020-05-08 苏州市美益添生物科技有限公司 一种用于食品包装的对夹式检测设备及其工作方法
CN111250424A (zh) * 2020-03-31 2020-06-09 中自机器人技术(安庆)有限公司 一种输液袋自动分拣机
CN112139041A (zh) * 2020-08-14 2020-12-29 许郑 一种防止包裹堵塞的物流分拣设备及其工作方法
CN112456097A (zh) * 2019-09-09 2021-03-09 顺丰科技有限公司 用于直线交叉带的回流方法和直线交叉带分拣机
CN112678408A (zh) * 2020-12-22 2021-04-20 深圳市子瑜杰恩科技有限公司 电子商务仓库的物品分配方法及系统
CN113353333A (zh) * 2020-08-04 2021-09-07 上海欣巴自动化科技股份有限公司 一种自动打包系统及打包方法
CN114735310A (zh) * 2022-04-14 2022-07-12 浙江辉煌三联实业股份有限公司 一种锯链自动包装生产线及包装工艺
CN115106294A (zh) * 2022-06-28 2022-09-27 泰科材料技术(广州)有限公司 一种金属烧结磨头加工分选装置

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Cited By (25)

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Publication number Priority date Publication date Assignee Title
NL2000801C2 (nl) * 2007-08-10 2009-02-11 Eurosort B V Sorteerinrichting.
WO2009022908A1 (fr) 2007-08-10 2009-02-19 Eurosort Bv Appareil de triage
US8245835B2 (en) 2007-08-10 2012-08-21 Eurosort B.V. Sorting apparatus
CN108816777A (zh) * 2017-05-26 2018-11-16 安徽省通信息科技有限公司 一种超高速分拣方法
CN108745918A (zh) * 2017-05-26 2018-11-06 安徽省通信息科技有限公司 一种超高速分拣系统
WO2019238030A1 (fr) * 2018-06-12 2019-12-19 北京极智嘉科技有限公司 Système et procédé de tri de colis
US11498771B2 (en) 2018-06-12 2022-11-15 Beijing Geekplus Technology Co., Ltd. Parcel sorting system and method
CN109013358A (zh) * 2018-07-10 2018-12-18 东莞理工学院 一种物流智能分拣装置
CN109013358B (zh) * 2018-07-10 2020-03-31 东莞理工学院 一种物流智能分拣装置
CN109225904A (zh) * 2018-10-09 2019-01-18 湖北新日电动车有限公司 一种电动车包装自动分拣输送线
CN109225904B (zh) * 2018-10-09 2023-10-10 湖北新日电动车有限公司 一种电动车包装自动分拣输送线
CN110090804A (zh) * 2019-05-07 2019-08-06 杭州祥龙物流设备科技股份有限公司 一种分拣道口及设备
CN112456097A (zh) * 2019-09-09 2021-03-09 顺丰科技有限公司 用于直线交叉带的回流方法和直线交叉带分拣机
CN112456097B (zh) * 2019-09-09 2022-06-21 顺丰科技有限公司 用于直线交叉带的回流方法和直线交叉带分拣机
CN111112131A (zh) * 2019-12-24 2020-05-08 苏州市美益添生物科技有限公司 一种用于食品包装的对夹式检测设备及其工作方法
CN111250424A (zh) * 2020-03-31 2020-06-09 中自机器人技术(安庆)有限公司 一种输液袋自动分拣机
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CN112678408A (zh) * 2020-12-22 2021-04-20 深圳市子瑜杰恩科技有限公司 电子商务仓库的物品分配方法及系统
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CN114735310B (zh) * 2022-04-14 2023-08-15 浙江辉煌三联实业股份有限公司 一种锯链自动包装生产线及包装工艺
CN115106294A (zh) * 2022-06-28 2022-09-27 泰科材料技术(广州)有限公司 一种金属烧结磨头加工分选装置
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