EP0512279B1 - Dispositif d'alimentation et de retournement des plateaux chargés de vaisselle - Google Patents

Dispositif d'alimentation et de retournement des plateaux chargés de vaisselle Download PDF

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Publication number
EP0512279B1
EP0512279B1 EP92106376A EP92106376A EP0512279B1 EP 0512279 B1 EP0512279 B1 EP 0512279B1 EP 92106376 A EP92106376 A EP 92106376A EP 92106376 A EP92106376 A EP 92106376A EP 0512279 B1 EP0512279 B1 EP 0512279B1
Authority
EP
European Patent Office
Prior art keywords
belt
chain
conveyor belt
turning
turning path
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.)
Expired - Lifetime
Application number
EP92106376A
Other languages
German (de)
English (en)
Other versions
EP0512279A1 (fr
Inventor
Jürgen Litterst
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.)
Premark FEG LLC
Original Assignee
Premark FEG Corp
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 Premark FEG Corp filed Critical Premark FEG Corp
Publication of EP0512279A1 publication Critical patent/EP0512279A1/fr
Application granted granted Critical
Publication of EP0512279B1 publication Critical patent/EP0512279B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/24—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by conveyors
    • A47L15/247—Details specific to conveyor-type machines, e.g. curtains

Definitions

  • the invention relates to a device for feeding, turning and, if necessary, sorting trays loaded with crockery parts into dishwashers, with a loading conveyor feeding the trays to the lower end of an approximately semicircular turning path in cross-section, and with discharge devices at the upper end of the turning path, which lead through to the center of curvature inside an endless inner belt is limited, the inner belt being occupied at regular intervals with rods projecting outwards, the feed conveyor being designed as an endlessly driven belt.
  • a machine with the above-mentioned features represents an improvement of a clearing device known from DE-PS 24 43 651 for used dining utensils.
  • This known clearing device has a clearing drum rotating around a horizontal axis with radially positioned, elastic driving fingers attached to the drum. which opposes a plurality of stationary, curved rails which form a turning channel with the drum surface.
  • discharge devices in the form of slides, belts or the like are provided behind the upper end of the turning channel in order to separate the trays arriving in the flushing position, which is more convenient in terms of washing technology, from the dishes.
  • a feed device for turning and dropping of dough pieces in molds is known.
  • the dough pieces are in a container assembly of predetermined length, so that a polygonal drum is used, the side length of which is equal to the length of the container assembly.
  • a feeder belt feeds the dough forms to a chain conveyor placed around the drum polygon, which is designed as an endlessly rotating chain conveyor belt which is driven in one piece from the lower loading side to the upper end of the turning conveyor.
  • the dough pieces remain on the upper level of the drum polygon, which is briefly held for this purpose while the containers are lifted by magnetic rails and then fed to another discharge device arranged at the top.
  • this known feed and turning device is discontinuous, and the polygonal shape of the drum means that only crockery parts or trays of a certain length can be turned without jamming.
  • the known device can also not be used as a clearing device for trays loaded with dishes, unless magnetizable materials are used in one or the other part.
  • other modifications would have to be made to improve access to flushing liquids.
  • the person skilled in the art cannot take measures for corresponding adaptations from this publication.
  • the feed device described at the outset is a simplification of the devices and devices known from the printing steps, it is in need of improvement in that all transfer stations at the interfaces between different conveyors should be switched off and the conveying in the turning path should be improved.
  • driving and designing the guideways for the trays and the dishes are often difficult insofar as, in the area of the turning path, the previously known and used feeding machines carry out the conveying of the workpieces to be turned from the side opposite the loading conveyor.
  • the engagement between the workpiece to be conveyed and the conveyor takes place in the area of the loading conveyor from below and outside, while the engagement in the area of the turning path takes place from the inside, above the inner belt and with the rods projecting outwards.
  • Jamming is sometimes unavoidable, and the conveyance takes place partly through the inside of the workpieces, so that the rods can only partially touch and convey the dishes above napkins or leftovers.
  • the invention is therefore based on the object of improving the device of the type mentioned in such a way that the trays and dishes are guided more reliably and the drive of the entire turning unit can be made less prone to failure and more robust.
  • this object is achieved in that the loading conveyor is formed in one piece through the chain conveyor belt up to the upper end of the turning path, which is guided in the region of the turning path open to the outside by stationary, curved chain rails attached to each side thereof, and in that the chain conveyor belt has outward protruding protrusions from at least some of the chain links.
  • the term one-piece refers here to the observation of the entire turning device from the side, whereby the still straight and generally horizontal loading area is designed without interruption, so to speak seamlessly, into the curved turning path and continuously up to its upper end.
  • the chain conveyor belt which is pulled through in one piece, consists of a pair of chain conveyor belts pulled through in this way, namely a chain conveyor belt on each side of the turning path.
  • the turning path has the shape of a half cylinder jacket with two flat sides and the curved jacket surface.
  • Chain rails guide the respective chain conveyor belt on the respective side of the turning path in a new way from the lower loading area to the upper end of the turning path.
  • the conveyor protrusions provided on some chain links are intended to engage edges already present on the trays or workpieces to be turned, so that a certain type of positive connection is created, so that the entire thrust and conveying force from the outer chain conveyor belt the workpieces to be turned can be applied.
  • the trays are advantageously used only by this in a novel manner outer chain conveyor belt (which should always be thought of in pairs), while the inner belt only has a holding or support function and may not even have to be driven.
  • the rotating inner tether is also driven in synchronism with the respective outer chain conveyor belt.
  • the entire turning device in this way has significantly fewer sources of interference and instead the entire structure is more robust.
  • the drive of the turning unit can also be simplified, since the force for conveying the trays and dishes through the turning path essentially only needs to be applied by the outer chain conveyor belt and introduced into the trays, while hardly any effort is required to drive the inner circumferential holding belt got to.
  • the inner belt which is preferably designed as a lattice belt
  • the inner tether is preferably designed as a lattice tape such that it e.g. rotates on a pear-shaped track seen in cross-section.
  • This endless, revolving inner mesh belt is composed of crossbars, which are connected to each other in an articulated manner by lugs, similar to a bicycle chain.
  • This inner grid belt is guided with its crossbars in the shape of a pear, because freely rotatable rollers are arranged at the two ends of the respective crossbars, which are guided by correspondingly pear-shaped rails (again in pairs).
  • the mesh belt is driven by a pair of gears.
  • the space between the two guide rails is spanned by the lattice belt, which has only the holding function, and carries it freely.
  • the turning path is open inwards towards the center of the curvature, and food residues can fall between the band rods during the turning.
  • the drive of this poison belt with holding function takes place via the gear pair mentioned, the teeth of these gear wheels engaging between the rollers on the cross bars in the edges of the mesh belt.
  • the holding rods do not protrude more radially outwards, as is often the case with the known machines, but get better rigidity due to their forward inclination. If one imagines a radial line in the area of the turning path from the center of its curvature to the outside, then the longitudinal center line of the holding rods is tilted forward by at least 10 ° with respect to this radial imaginary line in the direction of rotation of the lattice support band, 15 ° and 20 ° also being used, an inclination of 15 ° is even preferred.
  • Both the chain rails for the chain conveyor belt and the link guide rails for the holding mesh belt are arranged in the area of the turning path on the side of the same and on the side of the holding rods, so that their outer free end can rotate without a counter bearing and without a counterpart.
  • This opposite arises only through the workpieces to be turned themselves, in particular through the trays, which have such a standardized width that they extend from one side of the turning path to the other and are certainly supported laterally by the pair of chain conveyor belts. Crockery items on the trays, like the trays themselves, are prevented from slipping, namely supported and held, by the holding rods. The conveyance and thrust of the parts to be turned, however, is applied by the outer chain conveyor belt.
  • conveyor plates formed according to the invention from plastic or the like are positively connected to the chain links of the chain conveyor belt by means of snap locks or similar devices.
  • This construction permits the use of a simple chain conveyor belt with chain links and articulated connections connecting these links to one another, which can even be removed and used from standardized standard programs, only the conveyor plates having to be specially designed and preferably equipped with locking means in order to ensure full functionality for the Provide turning path for trays.
  • the flat sides of the turning track are delimited by supporting cheeks which connect the chain rails of the chain conveyor belt and the link guide rails of the inner lattice holding belt to one another.
  • the construction the device is evidently simplified and robust as a result, and with correspondingly large supporting cheeks the entire turning area can optionally be closed to the outside, so that spray water can be applied from all sides to the turning track and the workpieces carried therein, with the result of excellent pre-cleaning.
  • each chain rail has a longitudinal groove which is only open towards the turning path and preferably has undercuts for rotatably accommodating it from the outside on the respective chain conveyor belt Casters.
  • chain rails can be provided for the upper run separately from the lower part of the chain conveyor belt, these can also be integrally connected to one another or provided that a longitudinal groove can only be set up for the respective run.
  • Each chain conveyor belt of the pair is located on one side of the turning path, the flat side mentioned, and the grooves open towards one another, so that each chain conveyor belt allows rollers which project to the side with respect to the turning path to be pushed into these longitudinal grooves.
  • the guides of the pair of the chain conveyor belt are on the sides of the turning path while the space is open to the inside.
  • the advantages resulting from this are the cheap supply of splash water to any point in the area of the turning path and also the favorable removal of food scraps, serviettes or other dirt or substances from the trays and dishes to be cleaned.
  • Undisturbed and functionally reliable, the rollers run in the longitudinal grooves of the chain rails and ensure reliable and trouble-free operation.
  • the turning device of the embodiment shown here has, starting from the loading area I and reaching over a turning track 2 to its upper end X, a chain conveyor belt 3 which is pulled through in one piece over this entire area.
  • this chain conveyor belt 3 is shown as a chain-link belt, but it goes without saying that a further rear chain conveyor belt of the same structure is arranged at the distance behind the front belt and in synchronism with the front Belt revolves so that only the front visible in Figure 1 for clarity Chain conveyor belt 3 is described.
  • this chain conveyor belt runs horizontally and at the lower end Y of the turning channel 2 transitions into a semicircular curved area, seen from the side, which ends at the upper, outlet-side end X of the turning channel 2.
  • the inside curved run of the chain conveyor belt 3 is regarded as the curved inner edge 4, which, at a distance from the width of the turning channel 2, not shown in the drawings, in FIG. 1, stands behind a second curved inner edge 4 of the other chain conveyor belt 3. If one were to rotate the viewing direction perpendicular to the paper plane of FIG. 1 from the front curved inner edge 4 to the rear counterclockwise around the center of curvature 5, this would result in an imaginary semi-cylindrical surface, which is actually completely open in the device shown here.
  • a gear pair 9 is arranged rotatably driven to the side of the center of curvature 5 facing away from the turning channel 2, around which the lattice belt 7 also rotates, wherein the gears 9 connected to each other by a shaft, not shown, engage with their teeth in the inner mesh belt 7 for driving it.
  • the direction of rotation of the inner lattice belt 7 is shown by the arrow 10 and runs counterclockwise around the center of curvature 5 synchronously with the inner run (inner edge 4) of the chain conveyor belt 3 arranged outside behind the turning track 2, the direction of rotation of which is shown by the two curved arrows 10 ' .
  • FIG. 1 Behind the front curved stationary rail 6 shown in FIG. 1 there is a further curved rail 6 at a distance approximately equal to the width of the turning channel 2, not shown, and the area stretched between them is cantilevered by the grating belt 7.
  • a conveyor belt 11 shown broken off, rotates around a deflecting roller, which is only shown in broken lines and is not designated in any more detail, as a discharge device.
  • a chute 12 is slanted, which also has the function of a discharge device, because the turned trays leave the upper end X of the turning channel 2 with the discharge belt 11, and that of the holding rods 8 dishes still held are picked up by the discharge chute 12 when leaving the turning channel 2 and fed to further conveyor devices (not shown here) for the supply to dishwashers.
  • FIG. 1 shows a tray 13 with crockery parts 14 on it with solid lines in the loading area I and with dashed lines (without crockery parts) in the lower region of the turning channel 2.
  • FIG. 2 shows one of the chain conveyor belts 3 arranged in pairs, the detailed structure of which will now be described. It is always necessary to refer to only one of the two chain conveyor belts 3, since the other one is mirror-symmetrical to the dash-dotted line 15 shown on the right in FIG.
  • a support cheek 16 opposite the plane of symmetry 15 on the left are two stationary and curved rails 17, 17 ′ arranged one above the other at a radial distance r and located mainly in the region of the turning channel 2.
  • Another embodiment of these rails 17, 17 ' is shown to the left in FIG. 2 (connected by the "OR" symbol), the two separate curved rails being combined in a single block 17'.
  • Both the individual chain rails 17, 17 'and the plate-shaped block structure 17' 'for these chain rails have a longitudinal groove 18 which is only open towards the turning path 2, that is to say to the right in FIG. 2, and has a width such that it has the diameter of a Roller 19 picks up.
  • the latter has an undercut 20 in order to accommodate disks 21 projecting radially beyond the diameter of the rollers 19, as a result of which the roller 19 is prevented from sliding out of the longitudinal grooves 18.
  • each chain link 22 has the shape of an L, with one leg of the L being connected to the axis 24 of the roller 19 and a conveyor plate 25, preferably made of plastic, being positively attached to the other leg of the line. Mushroom-shaped in cross-section, longitudinally for flexible evasion split latches 26 ensure the firm connection between the conveyor plate 25 and chain link 22.
  • every second conveyor plate 25 has at least one conveyor projection 27, which for the positive engagement between the chain conveyor belt 3 and the workpieces to be conveyed , such as trays 13.
  • FIG. 4 The detail denoted by Y in FIG. 1 at the lower entry of the turning channel 2 is shown enlarged in FIG. 4 and shows this positive engagement between the rear edge 13 'of the tray 13 on the one hand and the conveying projection 27 of the conveying plate 25 on the other hand.
  • trays 13 loaded with crockery parts are placed in the loading area I on the chain conveyor belt 3 in such a way that the tray 13 cantileverly spans the free space between the two spaced-apart chain conveyor belts 3. In this way, according to FIG. 1, the loaded tray 13 moves from left to right to the lower end Y of the turning path 2.
  • the tray and especially the crockery parts 14 on it do not slide down or are prevented from climbing up in the area of the turning path 2, they are preferably 15 ° to the front (FIG. 3 shows the alternatives 15 ° and 20 °) in the conveying direction 10 of the respective radial direction inclined holding rods 8 with their ends 28 in engagement either with the tray 13 as shown in FIG. 4 or also with dishes and / or the tray 13 located on the tray.
  • the upper free end 28 of the holding rods 8 does not engage the chain conveyor belt 3 but runs past the contour or the curved inner edge 4 of the chain conveyor belt 3.
  • the holding rods 8 are fastened on feet 29, which are arranged between the tabs 30 of the inner retaining grid belt 7.
  • the tabs 30 in turn are connected to one another via cross bars 31, at the ends of which freely rotatable rollers 32 are arranged. The latter are guided by the link guide rails 6, which with the support cheeks 16 Rails 17, 17 'of the chain conveyor 3 are connected.
  • the inner grating belt 7 run endlessly, but also the chain conveyor belt 3, namely around the two deflection rollers 33 and 34 - partially, namely mainly in the area of the turning path 2, through the chain rails 17, 17 'and 17' '.
  • the holding rods 8 ensure that the workpieces to be conveyed remain relative to one another or the rear pushing edge 13 'with respect to the conveying projection 27, so that lifting and turning without significant displacement of the workpieces.
  • the trays 13 are gripped and carried away by the discharge conveyor 14, while the rods of the discharge chute 12 which subsequently engage between the holding rods 8 pick up and remove the dishes, if any, are present.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Framework For Endless Conveyors (AREA)
  • Intermediate Stations On Conveyors (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Branching, Merging, And Special Transfer Between Conveyors (AREA)

Claims (5)

  1. Dispositif pour l'alimentation, le retournement et éventuellement le tri de plateaux (13) chargés d'éléments de vaisselle (14) à destination de machines à laver, avec un convoyeur amenant les plateaux (13) à l'extrémité inférieure (Y) d'une voie tournante (2) de section sensiblement semi-circulaire et avec des dispositifs d'évacuation (11, 12) sur l'extrémité inférieure de la voie de retournement (2) qui est limitée à l'intérieur jusqu'au point médian de courbure (5) par une bande intérieure sans fin (7), la bande intérieure (7) étant dotée à intervalles réguliers de barreaux faisant saillie vers l'extérieur (8), le convoyeur d'amenée (1, 3) étant conçu sous forme de bande entraînée à circulation sans fin jusqu'à l'extrémité supérieure (X) de la voie de retournement (2), caractérisé en ce que le convoyeur d'amenée est conçu sous forme de bande transporteuse à chaîne (3) s'étendant d'un seul tronçon et qui dans la zone (d'Y à X) de la voie de retournement ouverte vers l'extérieur (2) est guidé par des glissières à chaîne (17, 17', 17'') courbes, stationnaires, disposées de chaque côté de la voie de retournement, et en ce que la bande transporteuse à chaîne (3) présente des saillies de transporteur (27) dirigées vers l'extérieur par rapport à au moins plusieurs des maillons de chaîne (22).
  2. Dispositif selon la revendication 1, caractérisé en ce que sur la bande interne (7) conçue de préférence sous forme de bande en treillis dans le sens de marche (10) de celle-ci, sont agencées des barres de retenue (8) dirigées vers l'avant et inclinées à au moins 10° de sorte que leurs extrémités libres extérieures (28) parviennent à proximité de la hauteur du bord interne courbe (4) de la bande transporteuse à chaîne (3).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les plaques de transporteur (25) conçues en matière synthétique ou analogue sont raccordées par des verrous à déclic (26) au maillon de chaîne (22) de la bande transporteuse à chaîne (3) par engagement positif.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les côtés plats de la voie de retournement (2) sont délimités par des faces d'appui (16) qui relient entre elles les glissières de chaîne (17, 17', 17'') de la bande transporteuse à chaîne (3) et les glissières de guidage à coulisseau (6) de la bande de retenue à treillis interne (7).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que chaque glissière à chaîne (17, 17', 17'') présente une gorge longitudinale (18) ouverte uniquement vers la voie de retournement (2) et de préférence présentant des contre-dépouilles (20) pour recevoir de façon guidée les galets de roulement (19) montés de façon rotative vers l'extérieur sur la bande transporteuse à chaîne respective (3).
EP92106376A 1991-05-04 1992-04-14 Dispositif d'alimentation et de retournement des plateaux chargés de vaisselle Expired - Lifetime EP0512279B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4114552A DE4114552A1 (de) 1991-05-04 1991-05-04 Vorrichtung zum zufuehren und wenden von mit geschirrteilen beladenen tabletts
DE4114552 1991-05-04

Publications (2)

Publication Number Publication Date
EP0512279A1 EP0512279A1 (fr) 1992-11-11
EP0512279B1 true EP0512279B1 (fr) 1995-10-25

Family

ID=6430953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92106376A Expired - Lifetime EP0512279B1 (fr) 1991-05-04 1992-04-14 Dispositif d'alimentation et de retournement des plateaux chargés de vaisselle

Country Status (5)

Country Link
US (2) US5421690A (fr)
EP (1) EP0512279B1 (fr)
AT (1) ATE129394T1 (fr)
DE (2) DE4114552A1 (fr)
ES (1) ES2078575T3 (fr)

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DE4114552A1 (de) * 1991-05-04 1992-11-05 Premark Feg Corp Vorrichtung zum zufuehren und wenden von mit geschirrteilen beladenen tabletts
DE4243892C2 (de) * 1992-12-23 1996-07-25 Premark Feg Corp Geschirrspülanlage für mit Geschirrteilen beladene Tabletts
US6722838B2 (en) * 2001-04-10 2004-04-20 Bowe Bell & Howell Company Method and system for high speed tray unloading and mail transporting
US7143465B2 (en) * 2002-07-17 2006-12-05 Futor Cleaning System Ag Apparatus for cleaning toner cartridges
CN104944146A (zh) * 2015-07-03 2015-09-30 安徽中盛粮油进出口有限公司 一种芝麻油存储瓶的自动朝下晾晒设备
US10518921B1 (en) 2015-11-25 2019-12-31 Altria Client Services Llc Method of separating a rigid body from its contents
KR20190017637A (ko) * 2018-04-16 2019-02-20 주식회사프라임 식기식판 뒤집기장치 및 이를 이용하는 식기세척시스템
US10843877B2 (en) * 2018-11-27 2020-11-24 Dishcraft Robotics, Inc. Dishwashing conveyance system and method
US10766717B2 (en) * 2018-11-27 2020-09-08 Dishcraft Robotics, Inc. Dishwashing conveyance system and method
US10647524B1 (en) * 2018-11-27 2020-05-12 Dishcraft Robotics, Inc. Dishwashing conveyance system and method
CN110841919A (zh) * 2019-12-09 2020-02-28 大连佳林设备制造有限公司 餐盘与碗碟自动分拣装置

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DE4114552A1 (de) * 1991-05-04 1992-11-05 Premark Feg Corp Vorrichtung zum zufuehren und wenden von mit geschirrteilen beladenen tabletts

Also Published As

Publication number Publication date
ES2078575T3 (es) 1995-12-16
DE4114552A1 (de) 1992-11-05
EP0512279A1 (fr) 1992-11-11
US5564882A (en) 1996-10-15
DE59204093D1 (de) 1995-11-30
US5421690A (en) 1995-06-06
ATE129394T1 (de) 1995-11-15

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