EP3802376A1 - Système de transfert à bandes transporteuses modulaires - Google Patents

Système de transfert à bandes transporteuses modulaires

Info

Publication number
EP3802376A1
EP3802376A1 EP19743048.1A EP19743048A EP3802376A1 EP 3802376 A1 EP3802376 A1 EP 3802376A1 EP 19743048 A EP19743048 A EP 19743048A EP 3802376 A1 EP3802376 A1 EP 3802376A1
Authority
EP
European Patent Office
Prior art keywords
transfer system
support
conveyor belts
conveyor belt
cover surface
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP19743048.1A
Other languages
German (de)
English (en)
Inventor
Cornelis Hendrik Mijndert Menke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rexnord Flattop Europe BV
Original Assignee
Rexnord Flattop Europe BV
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 Rexnord Flattop Europe BV filed Critical Rexnord Flattop Europe BV
Publication of EP3802376A1 publication Critical patent/EP3802376A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/52—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices
    • B65G47/66—Fixed platforms or combs, e.g. bridges between conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/22—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration comprising a series of co-operating units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/60—Arrangements for supporting or guiding belts, e.g. by fluid jets
    • B65G15/62—Guides for sliding belts

Definitions

  • the invention relates to a transfer system, comprising a pair of modular conveyor belts that is arranged end to end.
  • Modular conveyor belts are generally known, and are for example used for conveying discrete products such as plastic bottles.
  • the belts are built up of modules of which the top surfaces form a conveying surface for supporting the products to be conveyed.
  • the modules are usually
  • the length of the belt may be varied by placing modules in a row in a conveying direction, and by coupling successive modules in the row with hinge pins that extend transverse to the conveying direction.
  • the width of the belt can be varied by placing several modules next to each other transverse to the conveying direction.
  • the belts are usually of endless design, so that they can circulate over a conveying track using returns, usually a set of sprocket wheels at each end.
  • Such sprocket wheels are provided with teeth that engage the bottom of the modular belt.
  • the sprocket wheels typically need to have a relatively large diameter.
  • the modular nature of the belt causes the belt to round the sprocket wheels in a polygonal shape. In practice, this polygonal shape can cause the conveying surface to move up- and down slightly where it starts to round the sprocket wheel, which effect can be lessened when the return is chosen to be a sprocket wheel of relatively large diameter.
  • end to end transfer system When products are transferred from two subsequent conveyor belts that are aligned in conveying direction, e.g. when the length of a single modular conveyor belt is insufficient, a so called end to end transfer system may be used.
  • An end to end transfer system typically comprises a pair of modular conveyor belts that is arranged end to end, each conveyor belt having a pitch of the modules along a length of the conveyor belt, and including a plurality of adjacent modules across a width of the conveyor belt, the conveyor belts each extending along a top run located in a conveying plane of the transfer system, and at the facing ends thereof extending out of respectively into the conveying plane about a return, and further to or from the return along a bottom run that is located below the conveying plane.
  • the relatively large diameter of the sprocket wheels causes a relatively large gap in the conveying plane at the facing ends of the conveyor belts, which is often too large for products to be conveyed from one belt to the next without toppling over.
  • a disadvantage of such slide-over plate is that when finishing a product run, some products may be left behind in a so-called‘dead-zone’ of the slide-over plate.
  • the ends of the conveyor belts As closely together as possible, while reducing the pitch of the modules to less than 1 inch (about 25.4 mm) and while embodying the return as a guide surface that extends in width direction of the conveyor belt with a curved cross section.
  • the modular conveyor belts can be arranged end to end without using a slide- over plate.
  • the gap can be reduced to such an extent that a smooth transition can be achieved such that the problem of products toppling over is mitigated for most products.
  • the pitch may even be between 1 ⁇ 2 inch (about 12.7mm) and 1 ⁇ 4 inch (about 6.35 mm), e.g. be about V3 inch (about 8.5 mm).
  • An object of the invention therefore is to provide a transfer system that mitigates the above mentioned drawback, while maintaining or improving the reliability of the transfer of products.
  • the invention provides a transfer system comprising a pair of modular conveyor belts that is arranged end to end, each conveyor belt having a pitch of the modules along a length of the conveyor belt of 1 inch (about 25.4 mm) or less, and including a plurality of adjacent modules across a width of the conveyor belt, the conveyor belts each extending along a top run located in a conveying plane of the transfer system, and at the facing ends thereof extending out of respectively into the conveying plane about a return, and then extending from respectively to the return along a bottom run that is located below the conveying plane, each return including a guide surface that extends in width direction of the conveyor belt with a curved cross section, the transfer system further including a cover surface that extends in the conveying plane to close a gap between the top runs at the facing ends of the conveyor belts.
  • the cover surface acts as a protective barrier that restricts access to the gap such that fingers of an operator can not get pinched between the ends of the successive conveyor belts.
  • entanglement of objects and accumulation of dirt in the gap can be reduced, thereby improving the operative stability and reliability of the transfer system.
  • the cover surface may also prevent a protruding foot portion of a conveyed product from entering into the space below the gap in the conveying surface, stable transfer of products may be enhanced.
  • the dimension of the cover surface is less than three times the pitch of the modules of the conveyor with the smallest pitch of the pair of conveyors, more preferably less than two times the pitch of the modules.
  • the dimension of the cover surface is between a half and one and a half times the pitch of the modules, for example the
  • dimension of the cover surface may be between 1 ⁇ 2 inch (about 12.7 mm) and 1 ⁇ 4 inch (about 6.35 mm), e.g. be about 'A; inch (about 8.5 mm).
  • the cover surface includes a support that is arranged to extend in the space between the returns located below the gap in the conveying plane that is closed by the cover surface, it can be achieved that the cover surface remains secured in place during use.
  • the support of the cover surface e.g. allows mounting by screws into a body of the conveyor support at side edges of the conveyor belts, so that a stable and reliable construction can be realized relatively easily.
  • the support may be used to fill the space below the gap in the conveying surface, so that space for entrapment or accumulation of debris is limited.
  • the support By spacing the facing ends of the conveyor belts apart, and by designing the support to include a part that extends through an interspace between the facing ends of the conveyor belts, an even more stable and reliable construction can be realized. This is particularly useful in providing support for the cover surface across the width of the conveyor belt, which width can be significant due to the plurality of modules being arranged transverse to the conveying direction.
  • the support may e.g. be integrally formed with the cover surface to form a profile, and may have a width in the range of about 150 mm - 1100 mm, in particular about 170 mm - 1020 mm.
  • the height may be chosen relatively largely, such that it may be mounted into the side of a body of the conveyor support at side edges of the conveyor belts without sagging. This way, the support may be clear of the conveyor belt, i.e. be suspended freely.
  • the support may e.g. be mounted to brackets that extend longitudinally along the length direction at opposing side edges of the conveyor belts. By mounting the support only at its sides to the conveyor body, the construction may be facihtated as there is no need to provide an additional frame part to suspend the support.
  • the height of the support or profile may e.g. be in the range of about 50 - 90 mm, in particular about 60 - 80 mm.
  • the maximum length of the support or profile in conveying direction may e.g. be in the range of about 30 -10 mm, in particular about 20 - 10 mm.
  • the maximum length may be at the cover surface.
  • the minimum length may e.g. be about 5 mm, at the point where the conveyors are closest together.
  • the cover surface of the support or profile may be of plastics material, e.g. HDPE.
  • the support or profile may be made of plastics material, e.g. a machined beam or extruded profile of plastics material.
  • the support or profile may comprise metal or alternatively be made of metal, e.g.
  • the support or profile may be carried on threaded rods that extend between the sides of the conveyor body, and that e.g. may be tensioned.
  • a radius of curvature of the curved guide surface corresponds to the pitch of the modular conveyor belt or is less than the pitch, it can be achieved that the module when rounding the return can follow the rounded contour i.e. circular form of the return relatively well. In practice, during rounding this results in a smooth and reliable operation of the transfer system.
  • the diameter of curvature which is twice the radius of curvature, may for example be between 1 ⁇ 2 inch (about 12.7 mm) and V» inch (about 3.2 mm), e.g. be about 1 ⁇ 4 inch (about 6.35 mm).
  • the guide surface is a passive surface, it can be
  • the design can be simplified further and a reliable construction can be achieved as the guide can be provided without moving parts.
  • the cover surface can advantageously be designed to extend across the conveyor belt, preferably continuously. When the support also extends across the conveyor belt, a reliable construction can be realized. Applying these features in combination and implementing them in a continuous fashion provides for a particularly simple and reliable
  • cover surface and the support By designing the cover surface and the support to be integrally formed as a profile, a particularly reliable construction can be realized cost- effectively.
  • the stiffness of the cover surface can be improved.
  • the cover surface may be well supported near its edges, such that a reliable construction can be realized cost-effectively.
  • the support includes a top core that substantially fills an upper part of the space between the return adjacent the top runs of the conveyor belts, a narrow fit can be realized such that debris and other foreign objects are impeded from entering the space. This way, a very reliable operation of the transfer system can be achieved cost-effectively.
  • the stiffness of the construction can be improved.
  • the stiffness of the construction can be further improved. In this manner, a reliable
  • the support When the support is concavely shaped at at least one side facing the return, and cooperates with the guide surface to define a narrow, curved slot there between for passage of the modules of the modular conveyor belt, a self-locking construction can be realized cost-effectively.
  • the support may then be reliably positioned with its cover surface in the conveying plane relatively easily, as it is prevented from migrating out of its position in the conveying plane by interaction with the top surfaces of the modules in the return part, and may even be at least partially supported thereon. Thereby, a particularly stable and reliable construction can be achieved.
  • self-locking relates to the tendency of the support to secure itself with the cover surface positioned in the conveying plane when the conveyor belts are driven during operation of the transfer system.
  • the support By designing the support to be substantially hour glass shaped, a particularly elegant and cost-effective design can be realized, that achieves a particularly stable and reliable construction.
  • a connecting bracket may be provided which forms a connection between the support of the conveyor belts and the support of the cover surface, such that a stable and reliable construction can be realized relatively easily.
  • Fig. 1 shows a schematic perspective view from the top of a transfer system according to the invention
  • Fig. 2 shows a schematic cross section of the transfer system of Fig. 1 along the line A- A.
  • Fig. 1 shows a schematic perspective view from the top of a transfer system 1.
  • the transfer system 1 comprises a pair 2 of modular conveyor belts 3, 4.
  • the pair 2 of modular conveyor belts 3, 4 is arranged end to end, and are successive in length direction L.
  • the conveyors 3, 4 are of a modular design with a row of modules 5 successive in length direction L.
  • Successive modules 5 are hingedly connected to each other with the aid of hinge pins that extend transversely across the conveyor belt 3, 4.
  • Each conveyor belt 3, 4 has a pitch of the modules 5 along the length direction L of the conveyor belt of 1 inch (about 25.4 mm) or less. In this example the pitch is about 1 ⁇ 2 inch (about 12.7 mm).
  • Each conveyor belt is embodied as a mat that includes a plurality of adjacent modules 5 across a width direction W of the conveyor belt 3, 4. Top surfaces of the modules 5 together
  • the conveyor belts 3, 4 each extend along a top run 6 located in the conveying plane P of the transfer system 1. At the top run 6, the conveying face of the conveyors is arranged to support products to be conveyed in a conveying plane P.
  • each return 8 includes a guide surface 10 that extends in width direction W of the conveyor belt 3, 4 with a curved cross section.
  • the guide surface is part of a passive guide surface.
  • the guide surface is part of a stationary guide surface that is embodied as a so-called nose-over.
  • passive guide surfaces can e.g. be embodied as passive rollers that are driven by the respective conveyor belts 3, 4 during use.
  • the transfer system 1 further includes a cover surface 11 that extends in the conveying plane P to close a gap 12 in the conveying plane P between the top runs 6 at the facing ends 7 of the conveyor belts 3, 4.
  • the cover surface 11 is placed at an end-to-end transition between the successive modular conveyor belts 3, 4.
  • the conveyor belts 3, 4 are endless, and circulate between returns 8, of which only the facing returns are shown in Fig. 2.
  • the conveyor belts 3, 4 each circulate about further returns (not shown).
  • the conveyor belts 3, 4 are driven with drive wheels, for instance sprocket wheels not represented in the drawings.
  • the sprocket wheels may e.g. be arranged between the returns.
  • Fig. 2 shows a schematic cross section of the transfer system 1 of Fig. 1 along the hne A-A.
  • the cover surface 1 includes a support 13 that extends in the space between the returns 8. The space is located below the gap 12 that is closed by the cover surface 11.
  • the cover surface 11 and support 13 are integrally formed as a profile 14, e.g. an extruded profile that is substantially hour glass shaped.
  • the cover surface 11 and the support 13 are in this exemplary embodiment integrally formed as a profile 14 that is machined out of a beam of HDPE.
  • the profile 14 has a width of 1020 mm, a height of 80 mm, and a maximum length in conveying direction of 20 mm, at the cover surface. The minimum is 5 mm, at the point where the conveyors are closest together.
  • the support part 13 of the profile 14 extends through the interspace between the returns 8 at the facing ends of the conveyor belts 3,4 and is mounted into the side of a body of the conveyor support at side edges of the conveyor belts without sagging.
  • the support part 13 of the profile 14 is mounted to brackets that extend longitudinally along the length direction at opposing side edges of the conveyor belts 3, 4. The support is be clear of the conveyor belts 3, 4 and is suspended freely.
  • the cover surface 11 and support 13 may be formed as parts that are arranged for mounting together, for example using a screw connection, an adhesive connection or a welded connection.
  • the returns 8 of a pair 2 of modular conveyor belts 3, 4 arranged in end-to-end transition may be coupled via a connecting element (not represented) e.g. a connecting bracket extending along the length direction L at opposing side edges of the conveyor belts 3, 4.
  • the support 13 can be coupled via the connecting element to the returns 8 for a stable and reliable construction.
  • the support may be bolted or screwed to the connecting element, which can in turn be bolted or screwed to the returns 8.
  • the support 13 includes a top core 15 that substantially fills an upper part 16 of the space between the returns 8 adjacent the top run 6 of the respective conveyor belts 3, 4.
  • the support 13 further includes a bottom core 17 that is provided with holes 18. Similar to the top core 15, the bottom core 17 substantially fills a lower part 19 of the space between returns 8 adjacent the bottom run 9 of the respective conveyor belts 3, 4. That is to say, the support 13 is concavely shaped at both sides, each facing a return 8.
  • the support 13 cooperates with the guide surface 10 to define a narrow, curved slot 20 there between for passage of the modules 5 of the respective modular conveyor belts 3, 4.
  • the holes 18 are arranged for mounting multiple adjacent cover surfaces 11 including supports 13 across the width direction W, for example using dowel pins, screws or bolts (not represented).
  • the cover surface 11 and support 13 can be formed as a continuous member, without holes 18 for mounting.
  • the support 13 includes a part 21 that extends through an interspace 22 between the facing ends 7 of the conveyor belts 3, 4. This causes enlargement of the interspace 21 between the conveyor belts 3, 4 and goes against the prior art concept of placing the conveyor belts as closely together as possible in a transfer system. However, it allows for simple and reliable positioning of a cover surface, which in addition to increased safety improves stability of the products to be transferred.
  • the support 13 includes a further part 23 that extends through the interspace 21 between the facing ends 7 of the conveyor belts 3, 4, and that connects to the top core 15.
  • the cover surface 11 and the support 13 extend continuously across the conveyor belts 3, 4 in width direction W.
  • the curvature of the guide surface 10 of the return 8 corresponds to a curvature of a concave bottom surface of the modules 5. This way, he modular conveyor belt can follow the curvature of the guide surface of the nose over well.
  • the part of the support that substantially fills the upper part of the space between the returns adjacent the top run of the respective conveyor belts may have a triangular or cone shaped cross section.
  • the top core and bottom core might have a triangular cross section, which are inverted relative to one another and connected to each other by the further part.
  • the cover surface and support may be a kit of parts that are arranged to be mounted together, for example using a screw connection, an adhesive connection or a welding connection.
  • the conveyor belts can be designed, for instance, as metal or plastic modular conveyor belts or modular conveyor chains, but can also be of non-modular design, such as, for instance, endless rubber conveyor belts. Such variations shall be clear to the skilled person and are considered to fall within the scope of the invention as defined in the appended claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Framework For Endless Conveyors (AREA)

Abstract

L'invention concerne un système de transfert comprenant une paire de bandes transporteuses modulaires qui sont agencées bout à bout, chaque bande transporteuse comportant un pas associé aux modules le long d'une longueur de la bande transporteuse, inférieur ou égal à 1 pouce (environ 25,4 mm), et comprenant une pluralité de modules adjacents sur une largeur de la bande transporteuse, les bandes transporteuses s'étendant chacune le long d'un trajet supérieur se situant dans un plan de transport du système de transfert, et au niveau de leurs extrémités opposées s'étendant respectivement à l'extérieur et à l'intérieur du plan de transport autour d'un point de retour, et s'étendant en outre respectivement depuis le point de retour et vers celui-ci le long d'un trajet inférieur se situant au-dessous du plan de transport. Chaque trajet de retour comprend une surface de guidage qui s'étend dans le sens de la largeur de la bande transporteuse avec une section transversale incurvée. Le système de transfert comprend en outre une surface de protection, qui s'étend dans le plan de transport de façon à fermer un espace se situant entre les trajets supérieurs au niveau des extrémités opposées des bandes transporteuses.
EP19743048.1A 2018-06-11 2019-06-11 Système de transfert à bandes transporteuses modulaires Pending EP3802376A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2021102A NL2021102B1 (en) 2018-06-11 2018-06-11 Modular conveyor belt transfer system
PCT/NL2019/050349 WO2019240571A1 (fr) 2018-06-11 2019-06-11 Système de transfert à bandes transporteuses modulaires

Publications (1)

Publication Number Publication Date
EP3802376A1 true EP3802376A1 (fr) 2021-04-14

Family

ID=63638253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19743048.1A Pending EP3802376A1 (fr) 2018-06-11 2019-06-11 Système de transfert à bandes transporteuses modulaires

Country Status (3)

Country Link
EP (1) EP3802376A1 (fr)
NL (1) NL2021102B1 (fr)
WO (1) WO2019240571A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115298118A (zh) * 2020-04-09 2022-11-04 三菱电机株式会社 集聚装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1022132C2 (nl) 2002-12-10 2004-06-11 Mcc Nederland Kettingmodule en modulaire kettingtransporteur.
NL1032314C2 (nl) 2006-08-14 2008-02-15 Rexnord Flattop Europe Bv Kettingmodule voor een modulaire kettingtransporteur, modulaire transporteur en transportsysteem voorzien van een modulaire kettingtransporteur.
NL2002344C2 (en) * 2008-12-18 2010-06-21 Rexnord Flattop Europe Bv Conveyor chain module, conveyor chain, conveyor and conveyor system.
NL2003487C2 (nl) * 2009-09-14 2011-03-15 Rexnord Flattop Europe Bv Transportsysteem.
DE102009044297A1 (de) 2009-10-21 2011-04-28 Krones Ag Transporteinheit mit Stauröllchenketten
US8210341B2 (en) * 2009-12-08 2012-07-03 Laitram, L.L.C. Conveyor transfer system with floating transfer platform
NL2014241B1 (en) 2015-02-05 2016-10-12 Rexnord Flattop Europe Bv Modular conveyor.
CN205441937U (zh) 2016-03-08 2016-08-10 象山福成轻工机械厂 易拉罐制罐生产线宽5英尺内输送单元间连接过桥板
NL2018909B1 (nl) * 2017-05-12 2018-11-15 Vmi Holland Bv Werkwijze en drooginrichting voor het drogen van metalen blikken

Also Published As

Publication number Publication date
WO2019240571A1 (fr) 2019-12-19
NL2021102B1 (en) 2019-12-16

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