EP0249411B1 - Fours - Google Patents

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Publication number
EP0249411B1
EP0249411B1 EP87304990A EP87304990A EP0249411B1 EP 0249411 B1 EP0249411 B1 EP 0249411B1 EP 87304990 A EP87304990 A EP 87304990A EP 87304990 A EP87304990 A EP 87304990A EP 0249411 B1 EP0249411 B1 EP 0249411B1
Authority
EP
European Patent Office
Prior art keywords
kiln
cars
receiving
car
feeding means
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.)
Revoked
Application number
EP87304990A
Other languages
German (de)
English (en)
Other versions
EP0249411A1 (fr
Inventor
Arthur John Rowley
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.)
British Ceramic Service Co Ltd
Original Assignee
British Ceramic Service Co Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26290897&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0249411(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from GB868614132A external-priority patent/GB8614132D0/en
Priority claimed from GB868614133A external-priority patent/GB8614133D0/en
Application filed by British Ceramic Service Co Ltd filed Critical British Ceramic Service Co Ltd
Priority to AT87304990T priority Critical patent/ATE60430T1/de
Publication of EP0249411A1 publication Critical patent/EP0249411A1/fr
Application granted granted Critical
Publication of EP0249411B1 publication Critical patent/EP0249411B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/26—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers
    • F27B9/262—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers on or in trucks

Definitions

  • the present invention concerns improvements in or relating to kilns, especially but not exclusively kilns for firing ceramic ware.
  • GB2113939A Societa Impianti Ter- moelettrici Industrialli SpA SITI
  • This assembly comprises a closed circuit conveyor system with support plates arranged to supporttiles to be fired. Each plate is loaded upon the conveyor at an input and unloaded at an output. Throughput of tiles for firing is limited by the speed of the conveyor loading and the GB2113939A kiln assembly is quite unsuitable for large objects such as sanitary ware.
  • a kiln assembly including a plurality of wheeled cars adapted to carry ware to be fired along rails through the kiln, the cars being arranged such that their dimension transverse to the direction of movement through the kiln is greater than their dimension parallel to the kiln, receiving and feeding means for respectively receiving cars exiting from the kiln and cars to be fed to the kiln, the receiving and feeding means each having a device for lifting and lowering kiln wheeled cars from and to rails running through the kiln, and conveyor means for moving cars between the receiving and feeding means, said receiving means incorporating a car turning arrangement whereby after leaving the kiln and prior to re-introduction to the kiln each car is rotated through 90° such that as it travels from the receiving means to the feeding means its shortest dimension is transverse to the direction of travel through the kiln.
  • the feeding and receiving means are movable transversely to the direction of travel of cars through the kiln.
  • the conveyor means is arranged alongside the kiln to transport cars deposited thereon by the receiving means to the feeding means, the cars being unloaded and loaded with ware while on the conveyor means.
  • a method of continuously cycling kiln cars through a kiln assembly comprising running a wheeled car through a kiln on rails between receiving and feeding means, receiving the car at said receiving station on its discharge from the kiln, elevating it and rotating it through 90°, conveying it to the entrance to the kiln and prior to re-introducing it into the kiln rotating it through 90°, depositing it on a return conveyor arrangement, returning it to said feed means, elevating it and rotating it through 90° and redepositing it on the kiln rails at the entrance to the kiln.
  • loading and unloading operations are carried out as the car is transported from the receiving to the feeding means.
  • a kiln carfeed means 12 At the entrance 10 to the kiln there is provided a kiln carfeed means 12while at the exit 14from the kiln there is provided a kiln car receiving means 16.
  • the feed and delivery means are essentially of similar construction and the description of one of said means set out below should be regarded as being a description of the other means.
  • a plurality of wheeled kiln cars 18 are provided to carry ware through the kiln.
  • the kiln cars travel through the kiln on their wheels and are conveyed from the inlet 10 to the outlet 14 of the kiln by any suitable known means on rails 20 extending through the kiln.
  • the feed means 12 includes a structure 22 adapted to engage the underside of a kiln car 18 and elevate the car above, the level at which its wheels would engage the rails 20.
  • the structure 22 is mounted on a turntable 24 which, on operation, rotates the structure 22 with a kiln car thereon through 90°.
  • the feeding means 12 is itself mounted on rails whereby it may move from a position in which the centre of its turntable lies on the longitudinal centre axis of the kiln to a point laterally spaced from this axis where the structure 22 can engage a kiln car 18 brought loaded with ware to a pick-up station P by a conveyor 26 arranged alongside the kiln and running parallel to the rails 20 thereof.
  • a kiln car 18 brought by the conveyor 26 to the pick-up station P is lifted off the conveyor by the feed means 12 which is then traversed to the position shown in the drawing at which point the turntable assembly is operated to rotate the kiln car through 90° such that its shorter dimension lies along the line parallel to the rails 20.
  • the structure 22 on which the kiln car is supported is then lowered to engage the kiln car's wheels on the rails 20.
  • the car may then be progressed in any normal manner through the kiln so that the ware thereon is fired.
  • the receiving means 16 which, as set out above is similar in construction and operation to the feed means 12, receives on its structure 22 a "fired" kiln car, raises the kiln car 18 clear of the rails 20, rotates this kiln car through 90° by means of its turntable assembly 24, moves transversely of the rails 20 and deposits the kiln car at a loading station L on the chain conveyor 26.
  • the chain conveyor then moves the kiln car alongside the kiln from outlet to inlet and during this movement it can be readily unloaded and loaded manually by operatives or automatically by machinery, the loading and unloading operations being facilitated by the fact that the shortest dimension of the car, that is its fore-and-aft dimension as it passes through the kiln, is normal to the loading and unloading direction so that the ware when being loaded and unloaded has to be moved over a relatively short distance.
  • feed and receiving means may be employed provided that they receive a car in one orientation and rotate it through 90° before discharging it and the feed and receiving means may be arranged to serve more than one kiln whilst using one or more conveyors for the return transport system.
  • the means for transporting cars through the kiln may be amended, for example roller means may be employed.
  • two or more cars of the type described above can be arranged alongside each other and passed side- by-side through the kiln. In such a situation modified feeding and receiving means would be called for.
  • the kiln is a tunnel kiln where firing is continuous as the cars make from the entrance to the exit of the kiln.
  • the invention is equally applicable to a shuttle kiln where a batch of cars are fed to the kiln where they remain stationary while firing takes place.
  • a shuttle kiln assembly according to the invention, cars are fed through the kiln entrance as before while the exit is closed until sufficient cars are accumulated in the kiln. Firing then takes place and after firing the kiln exit is opened to allow cars to move to the receiving means 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Tunnel Furnaces (AREA)
  • Intermediate Stations On Conveyors (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Baking, Grill, Roasting (AREA)
  • Electric Stoves And Ranges (AREA)
  • Glass Compositions (AREA)

Claims (5)

1. Ensemble de four comprenant une pluralité de chariots à roues (18) prévus pour transporter de la vaisselle à cuire sur des rails traversant le four, les chariots (18) étant concus de sorte que leur dimension transversale relativement au sens de déplacement à travers le four est supérieure à leur dimension parallèle au four, des moyens de réception et d'alimentation (16, 12) pour respectivement recevoir les chariots sortant du four et les chariots à enfourner, et un moyen de transport (26) pour déplacer les chariots entre les moyens de réception et d'alimentation, les moyens de réception et d'alimentation (16, 12) présentant chacun un dispositif pour soulever les chariots (18) des rails traversant le four et pour les reposer sur ces rails, lesdits moyens de réception et d'alimentation (16, 12) comprenant un système assurant la rotation des chariots (24) permettant de faire tourner chaque chariot suivant un angle de 90 degrés à sa sortie du four ainsi qu'avant son enfournement de sorte que lors de son déplacement depuis le moyen de réception (16) jusqu'au moyen d'alimentation (12) sa dimension la plus courte est transversale relativement au sens de déplacement à travers le four.
2. Ensemble de four selon la revendication 2 caractérisé en ce que les moyens d'alimentation et de réception (16, 12) peuvent se déplacer dans un sens transversal relativement au sens de déplacement des chariots à travers le four.
3. Ensemble de four selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le moyen de transport (26) est placé le long du four pour transporter les chariots (18) déposés sur ce dernier par le moyen de réception (16) jusqu'au moyen d'alimentation (12), les chariots étant déchargés et chargés de vaisselle lorsqu'ils se trouvent sur le moyen de transport.
4. Procédé pour assurer le déplacement des chariots en un cycle continu dans un ensemble de four dont les étapes consistent à faire passer un chariot à roues (18) à travers un four sur des rails entre des moyens de réception et d'alimentation, réceptionner le chariot audit moyen de réception lors de son déchargement à la sortie du four (14), lever ce chariot et le faire tourner suivant un angle de 90 degrés, le déposer sur un organe de transport de retour permettant de le ramener audit moyen d'alimentation, lever ce chariot et le faire tourner suivant un angle de 90 degrés et le déposer à nouveau sur les rails du four à l'entrèe du four.
5. Procédé selon la revendication 4, caractérisé en ce que les opérations de chargement et déchargement sont effectuées lors du transport du chariot (18) du moyen de réception au moyen d'alimentation.
EP87304990A 1986-06-10 1987-06-05 Fours Revoked EP0249411B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87304990T ATE60430T1 (de) 1986-06-10 1987-06-05 Oefen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8614133 1986-06-10
GB8614132 1986-06-10
GB868614132A GB8614132D0 (en) 1986-06-10 1986-06-10 Kilns
GB868614133A GB8614133D0 (en) 1986-06-10 1986-06-10 Ware supporting assembly

Publications (2)

Publication Number Publication Date
EP0249411A1 EP0249411A1 (fr) 1987-12-16
EP0249411B1 true EP0249411B1 (fr) 1991-01-23

Family

ID=26290897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87304990A Revoked EP0249411B1 (fr) 1986-06-10 1987-06-05 Fours

Country Status (4)

Country Link
EP (1) EP0249411B1 (fr)
AT (1) ATE60430T1 (fr)
DE (1) DE3767574D1 (fr)
ES (1) ES2021361B3 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1490396A (en) * 1920-03-26 1924-04-15 American Dressler Tunnel Kilns Tunnel kiln
GB1368073A (en) * 1971-01-28 1974-09-25 Gibbons Brothers Ltd Kiln cars
DE2939437A1 (de) * 1979-09-28 1981-04-16 Annawerk Keramische Betriebe GmbH, 8633 Rödental Brennwagenaufbau
US4505630A (en) * 1979-12-17 1985-03-19 Besser Company Article transfer apparatus
IT1140307B (it) * 1981-11-27 1986-09-24 Siti Procedimento e impianto per il trattamento a cottura di manufatti ceramici
DE3519612A1 (de) * 1985-05-31 1986-12-04 Hutschenreuther Ag, 8672 Selb Einrichtung zum brennen von keramischen formteilen, insbesondere porzellangeschirrteilen

Also Published As

Publication number Publication date
ES2021361B3 (es) 1991-11-01
DE3767574D1 (de) 1991-02-28
EP0249411A1 (fr) 1987-12-16
ATE60430T1 (de) 1991-02-15

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