EP0922549A1 - Method and device for loading ceramic press moulds - Google Patents
Method and device for loading ceramic press moulds Download PDFInfo
- Publication number
- EP0922549A1 EP0922549A1 EP98203760A EP98203760A EP0922549A1 EP 0922549 A1 EP0922549 A1 EP 0922549A1 EP 98203760 A EP98203760 A EP 98203760A EP 98203760 A EP98203760 A EP 98203760A EP 0922549 A1 EP0922549 A1 EP 0922549A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- loading
- hopper
- belt
- layer
- loading hopper
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/022—Feeding several successive layers, optionally of different materials
Definitions
- This invention concerns ceramic tile forming processes and the devices for their implementation.
- porcellainized ceramic stone tiles in which at least the exposed part consists of a bulk-coloured layer.
- Said layer is formed from atomized clay, the granules of which are variously coloured by known processes, and which are fed to the mould in the form of soft single-colour masses which, on partial mixing, give rise to multi-colour effects reproducing for example marble veining.
- one of the most delicate points in the porcellainized ceramic stone tile manufacturing cycle is the powder feed to the forming mould cavity, on which the distribution of the powder mass within the tile depends.
- the known art involves separately preparing, at a point distant from the press, intensely coloured single-colour or two-colour granules or flakes which are then independently stored and subsequently transferred to another vessel mixed with atomized powder, to be then fed to the press hopper.
- the object of the invention is to prepare and feed said mixtures in such a manner as to avoid said drawbacks.
- the specific characteristic of the method and apparatus is that the mixtures, including also the flakes, are prepared in a single operation immediately upstream of and in proximity to the press, so dispensing with all the intermediate handling and storage operations.
- Figure 1 is a partly sectional side view of the invention.
- Figure 2 is a schematic section through the invention taken on the line II-II.
- Said figures show a usual press 2 provided with a usual mould 2.
- a support platform 3 On the side of the press 1 there is a support platform 3 on which a usual loading carriage 4 slides to feed the material to be compacted into the impression in the mould 2.
- Said loading carriage 4 moves with reciprocating movement between a material loading position and a material discharge position, it being driven by the geared electric motor 5 via the connecting rod-crank mechanism 6.
- the loading carriage 4 comprises a number of compartments 7 equal to the number of impressions in the mould 2, the compartments being provided with usual internal grids 70. Three compartments are shown in the example.
- a pusher 8 comprising a scraper 9, to the rear of the compartments there being fixed a flat plate 10, to which the connecting rod-crank mechanism 6 is connected.
- the loading compartments 7 lie exactly below the lower mouth of the loading hopper 11, whereas when the loading carriage 4 is in the position for discharging the material to be compacted, the compartments 7 lie in correspondence with the impressions in the mould 2, at the same time the lower mouth of the hopper 11 being covered by the flat plate 10.
- a frame 12 is provided in a position overlying the loading carriage 4, to move continuously to and fro over the upper mouth of the hopper 11, driven by the geared motor 13 via the connecting rod-crank mechanism 14.
- Said frame 12 upperly supports the service hoppers 15,...,20 and lowerly supports a usual belt conveyor 21 driven by a usual drive, not shown.
- Each of the hoppers 15, ..., 20 contains a powder of different material characteristics, which is deposited on the conveyor belt 21 to create the superposed material layers thereon.
- the powder material is fed into each of the hoppers 15,...,20 by a traversing flexible distributor 22,...,27 the lower end of which travels with continuous reciprocating movement along their upper mouths to deposit the material into their interiors in a virtually uniform manner, and which is connected to an overlying vessel by a flexible pipe.
- Each of the hoppers 15,...,20 is provided with a lower closure gate 28,...,33 operated by a pneumatic unit 34,...,39.
- Said frame 12 also supports a double-acting cylinder-piston unit 300 fed with compressed air by a compressor, not shown.
- a frame 301 supporting an idly mounted compacting roller 40 is fixed to the rod of the cylinder-piston unit 300 by known means.
- the cylinder-piston unit 300 operates in practice as an air spring of adjustable thrust, by which the degree of compaction of the material travelling on the belt between the rollers 40 and 41 can be regulated.
- the plant operation is controlled by a programmable processor, which coordinates the following operations.
- the belt 21 is rotated continuously, and collects the respective material from one or more of the hoppers 15 to 18.
- the material is subjected to the action of the roller 40, which compacts it and crushes the larger-size granules to cause them to assume the desired appearance of irregular flakes.
- the compacted material Downstream of the compacting roller the compacted material receives single-colour base material from at least one of the hoppers 19, 20, to complete the tile.
- the movement of the belt 21 is continuous, as is the reciprocating movement of the frame 12, so that several layers form in succession one on another within the hopper 11.
- the reciprocating movement of the frame 12 is controlled by a level probe provided within the hopper 11, such that the quantity of material present in this latter remains virtually constant.
- the carriage transfers one material layer at a time having the thickness of the loading carriage into the cavity in the mould 2.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
Description
- This invention concerns ceramic tile forming processes and the devices for their implementation.
- It is directed in particular towards so-called porcellainized ceramic stone tiles, in which at least the exposed part consists of a bulk-coloured layer.
- Said layer is formed from atomized clay, the granules of which are variously coloured by known processes, and which are fed to the mould in the form of soft single-colour masses which, on partial mixing, give rise to multi-colour effects reproducing for example marble veining.
- Although tiles bulk-coloured throughout their entire thickness are known, the high cost of the materials for creating multi-colour masses has induced manufacturers to use tiles having a large but hidden part of their thickness formed from one low-cost single-colour mass, with only the exposed layer in the form of said single-colour masses partially mixed together.
- However for high-quality products the bulk-coloured solution is preferred.
- In bulk-coloured tiles one of the most delicate points in the porcellainized ceramic stone tile manufacturing cycle is the powder feed to the forming mould cavity, on which the distribution of the powder mass within the tile depends.
- This problem is aggravated by the fact that the various single-colour atomized materials which form said masses often have different characteristics, and hence also a different behaviour during their various handlings.
- This circumstance is particularly important when preparing products for which an appearance of single-colour or two-colour points possibly of different dimensions distributed regularly throughout the mass is required.
- To obtain these products the known art involves separately preparing, at a point distant from the press, intensely coloured single-colour or two-colour granules or flakes which are then independently stored and subsequently transferred to another vessel mixed with atomized powder, to be then fed to the press hopper.
- The handling involved in the preparation, the mixing and the double storage of said granule or flake products gives rise to problems which make them difficult to use.
- In this respect, the large granules or flakes tend to dry and harden, creating problems for their uniform pressing.
- They also tend to break down into unsuitable dimensions, or to abrade to assume a round shape making their appearance in the final product unpleasant.
- The object of the invention is to prepare and feed said mixtures in such a manner as to avoid said drawbacks.
- This object is attained by the method and apparatus of this patent, the characteristics of which are defined in the claims.
- The specific characteristic of the method and apparatus is that the mixtures, including also the flakes, are prepared in a single operation immediately upstream of and in proximity to the press, so dispensing with all the intermediate handling and storage operations.
- The invention will be more apparent from the ensuing description of a preferred embodiment of the apparatus for implementing the method given by way of non-limiting example and illustrated on the accompanying drawings.
- Figure 1 is a partly sectional side view of the invention.
Figure 2 is a schematic section through the invention taken on the line II-II. - Said figures show a
usual press 2 provided with ausual mould 2. - The ensuing description relates to a three-impression mould, the invention however also being applicable to moulds with more or less impressions.
- To the side of the
press 1 there is asupport platform 3 on which ausual loading carriage 4 slides to feed the material to be compacted into the impression in themould 2. - Said loading
carriage 4 moves with reciprocating movement between a material loading position and a material discharge position, it being driven by the geared electric motor 5 via the connecting rod-crank mechanism 6. - More specifically, the
loading carriage 4 comprises a number ofcompartments 7 equal to the number of impressions in themould 2, the compartments being provided with usualinternal grids 70. Three compartments are shown in the example. - In the part to the front of said
loading carriages 7 there is provided a pusher 8 comprising ascraper 9, to the rear of the compartments there being fixed aflat plate 10, to which the connecting rod-crank mechanism 6 is connected. - When the
loading carriage 4 is in the loading position shown in Figure 1, theloading compartments 7 lie exactly below the lower mouth of theloading hopper 11, whereas when theloading carriage 4 is in the position for discharging the material to be compacted, thecompartments 7 lie in correspondence with the impressions in themould 2, at the same time the lower mouth of thehopper 11 being covered by theflat plate 10. - A
frame 12 is provided in a position overlying theloading carriage 4, to move continuously to and fro over the upper mouth of thehopper 11, driven by the gearedmotor 13 via the connecting rod-crank mechanism 14. - Said
frame 12 upperly supports theservice hoppers 15,...,20 and lowerly supports ausual belt conveyor 21 driven by a usual drive, not shown. - Each of the
hoppers 15, ..., 20 contains a powder of different material characteristics, which is deposited on theconveyor belt 21 to create the superposed material layers thereon. - The powder material is fed into each of the
hoppers 15,...,20 by a traversingflexible distributor 22,...,27 the lower end of which travels with continuous reciprocating movement along their upper mouths to deposit the material into their interiors in a virtually uniform manner, and which is connected to an overlying vessel by a flexible pipe. - Each of the
hoppers 15,...,20 is provided with alower closure gate 28,...,33 operated by apneumatic unit 34,...,39. - Said
frame 12 also supports a double-acting cylinder-piston unit 300 fed with compressed air by a compressor, not shown. - A
frame 301 supporting an idly mountedcompacting roller 40 is fixed to the rod of the cylinder-piston unit 300 by known means. - Below the
belt conveyor 21 in a position corresponding with the compactingroller 40 there is provided anidle counteracting roller 41. - The cylinder-
piston unit 300 operates in practice as an air spring of adjustable thrust, by which the degree of compaction of the material travelling on the belt between therollers - The plant operation is controlled by a programmable processor, which coordinates the following operations.
- The
belt 21 is rotated continuously, and collects the respective material from one or more of thehoppers 15 to 18. - During belt advancement the material is subjected to the action of the
roller 40, which compacts it and crushes the larger-size granules to cause them to assume the desired appearance of irregular flakes. - Downstream of the compacting roller the compacted material receives single-colour base material from at least one of the
hoppers - During the to-and-fro movement of the
frame 12 between the position shown by full lines and the position shown by dashed and dotted lines in Figure 1, the belt continuously discharges superposed ordered layers of material into the interior of thehopper 11. - The movement of the
belt 21 is continuous, as is the reciprocating movement of theframe 12, so that several layers form in succession one on another within thehopper 11. - The reciprocating movement of the
frame 12 is controlled by a level probe provided within thehopper 11, such that the quantity of material present in this latter remains virtually constant. - Whatever the number of layers present in the
hopper 11, the carriage transfers one material layer at a time having the thickness of the loading carriage into the cavity in themould 2.
Claims (10)
- A method for loading powder into ceramic tile forming cavities, characterised by comprising the following operations:preparing on a surface at least one layer of atomized powder;pressing said at least one layer;covering said at least one pressed layer with a possible further at least one layer of atomized powder;transferring said material layers in succession into a loading hopper of a loading carriage;transferring material layers from said hopper to the mould forming cavities.
- A method as claimed in claim 1, characterised in that said layers are transferred into the loading hopper by gravity.
- A method as claimed in claim 1, characterised in that said layers are transferred into the forming cavities by gravity.
- A method as claimed in claim 1, characterised in that the layers which form in the loading hopper have the same plan dimensions as the mould cavities.
- A device for loading powder into ceramic tile forming cavities comprising a loading carriage which is provided with at least one loading compartment occupied by a grid and having plan dimensions equal to the dimensions of the mould cavity and which moves between two positions, in one of which the compartment lies above the mould cavity and in the other of which the compartment lies below a loading hopper, characterised by comprising a structure driven with reciprocating movement between a position lying above the loading hopper and a position distant from the loading hopper, and on which there are located a motorized belt with a flat portion, at least one service hopper above the upper branch of the belt and having its mouth transverse to the belt and closed by a shutter, and a roller pressing elastically on the upper side of the belt and positioned downstream of said at least one service hopper with reference to the direction of advancement of the belt, and acting against an underlying counteracting roller.
- A device as claimed in claim 5, characterised in that the loading hopper has the same plan dimensions as the mould cavity.
- A device as claimed in claim 5, characterised in that at least one further service hopper is provided downstream of the pressing roller.
- A device as claimed in claim 5, characterised in that said movable structure moves between a position in which the end of the belt lies above that end of that loading hopper close to the mould cavity, and a position in which the end of the belt lies above that end of the loading hopper distant from the mould cavity.
- A device as claimed in claim 5, characterised in that the movable structure is driven by a connecting rod and crank.
- A device as claimed in claim 5, characterised in that the pressing roller is connected to the rod of a double-acting pneumatic cylinder-piston unit acting as an air spring.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITRE970098 | 1997-12-11 | ||
IT97RE000098A IT1298003B1 (en) | 1997-12-11 | 1997-12-11 | METHOD AND LOADING DEVICE FOR CERAMIC PRESS MOLDS |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0922549A1 true EP0922549A1 (en) | 1999-06-16 |
EP0922549B1 EP0922549B1 (en) | 2003-02-26 |
Family
ID=11399138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98203760A Expired - Lifetime EP0922549B1 (en) | 1997-12-11 | 1998-11-06 | Method and device for loading ceramic press moulds |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0922549B1 (en) |
AT (1) | ATE233154T1 (en) |
DE (1) | DE69811617T2 (en) |
ES (1) | ES2189086T3 (en) |
IT (1) | IT1298003B1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1899785B (en) * | 2006-06-14 | 2010-05-12 | 钟家欣 | Stock distributing device for ceramic forming press and stock distributing method using said stock distributing device |
CN103481358A (en) * | 2013-09-13 | 2014-01-01 | 广东嘉俊陶瓷有限公司 | Material distribution method and system for production of canyon lava flow layer imitation ceramic tile |
CN103722616A (en) * | 2014-01-17 | 2014-04-16 | 广东萨米特陶瓷有限公司 | Layer spread ceramic raw material continuous toppling, stacking and rubbing type material distribution structure and method for same |
CN105082339A (en) * | 2014-05-16 | 2015-11-25 | 上海斯米克控股股份有限公司 | Powder distributing device for ceramic tile with extended fine sand texture effect |
CN107322778A (en) * | 2017-07-31 | 2017-11-07 | 佛山市金尊玉陶瓷有限公司 | A kind of distribution of ceramic tile method |
US20210069933A1 (en) * | 2018-09-30 | 2021-03-11 | Dongguan City Wonderful Ceramics Industrial Park Co., Ltd. | Mechanical arm material distribution equipment capable of realizing consistence between a whole-body texture and a surface decoration pattern of ceramic tile and control method for mechanical arm material distribution and pattern adjustment |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111376384B (en) * | 2020-03-20 | 2021-08-03 | 龙泉市建春青瓷厂 | Automatic production line for celadon blank |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2089267A5 (en) * | 1970-04-09 | 1972-01-07 | Laeis Werke Ag | |
EP0822044A1 (en) * | 1996-07-30 | 1998-02-04 | Ceramiche Dual S.r.l. | Loading system for the moulds of ceramic presses for forming pressure-glazed tiles, and relative implementation means |
-
1997
- 1997-12-11 IT IT97RE000098A patent/IT1298003B1/en active IP Right Grant
-
1998
- 1998-11-06 DE DE69811617T patent/DE69811617T2/en not_active Expired - Fee Related
- 1998-11-06 AT AT98203760T patent/ATE233154T1/en not_active IP Right Cessation
- 1998-11-06 EP EP98203760A patent/EP0922549B1/en not_active Expired - Lifetime
- 1998-11-06 ES ES98203760T patent/ES2189086T3/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2089267A5 (en) * | 1970-04-09 | 1972-01-07 | Laeis Werke Ag | |
EP0822044A1 (en) * | 1996-07-30 | 1998-02-04 | Ceramiche Dual S.r.l. | Loading system for the moulds of ceramic presses for forming pressure-glazed tiles, and relative implementation means |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1899785B (en) * | 2006-06-14 | 2010-05-12 | 钟家欣 | Stock distributing device for ceramic forming press and stock distributing method using said stock distributing device |
CN103481358A (en) * | 2013-09-13 | 2014-01-01 | 广东嘉俊陶瓷有限公司 | Material distribution method and system for production of canyon lava flow layer imitation ceramic tile |
CN103722616A (en) * | 2014-01-17 | 2014-04-16 | 广东萨米特陶瓷有限公司 | Layer spread ceramic raw material continuous toppling, stacking and rubbing type material distribution structure and method for same |
CN103722616B (en) * | 2014-01-17 | 2015-12-02 | 广东萨米特陶瓷有限公司 | Layer paving ceramic raw material turns over folded stranding formula fabric construction and method continuously |
CN105082339A (en) * | 2014-05-16 | 2015-11-25 | 上海斯米克控股股份有限公司 | Powder distributing device for ceramic tile with extended fine sand texture effect |
CN105082339B (en) * | 2014-05-16 | 2018-02-06 | 上海悦心健康集团股份有限公司 | It is a kind of that there is the ceramic tile powder distribution device for prolonging continuous fine sand grain effect |
CN107322778A (en) * | 2017-07-31 | 2017-11-07 | 佛山市金尊玉陶瓷有限公司 | A kind of distribution of ceramic tile method |
CN107322778B (en) * | 2017-07-31 | 2019-08-13 | 佛山市金尊玉陶瓷有限公司 | A kind of distribution of ceramic tile method |
US20210069933A1 (en) * | 2018-09-30 | 2021-03-11 | Dongguan City Wonderful Ceramics Industrial Park Co., Ltd. | Mechanical arm material distribution equipment capable of realizing consistence between a whole-body texture and a surface decoration pattern of ceramic tile and control method for mechanical arm material distribution and pattern adjustment |
US11639013B2 (en) * | 2018-09-30 | 2023-05-02 | Dongguan City Wonderful Ceramics Industrial Park Co., Ltd. | Mechanical arm material distribution equipment capable of realizing consistence between a whole-body texture and a surface decoration pattern of ceramic tile and control method for mechanical arm material distribution and pattern adjustment |
Also Published As
Publication number | Publication date |
---|---|
ES2189086T3 (en) | 2003-07-01 |
ATE233154T1 (en) | 2003-03-15 |
DE69811617T2 (en) | 2003-12-24 |
EP0922549B1 (en) | 2003-02-26 |
ITRE970098A1 (en) | 1999-06-11 |
DE69811617D1 (en) | 2003-04-03 |
ITRE970098A0 (en) | 1997-12-11 |
IT1298003B1 (en) | 1999-12-20 |
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