EP0873832A1 - Apparatus for pressing two-layer ceramic tiles - Google Patents
Apparatus for pressing two-layer ceramic tiles Download PDFInfo
- Publication number
- EP0873832A1 EP0873832A1 EP98107328A EP98107328A EP0873832A1 EP 0873832 A1 EP0873832 A1 EP 0873832A1 EP 98107328 A EP98107328 A EP 98107328A EP 98107328 A EP98107328 A EP 98107328A EP 0873832 A1 EP0873832 A1 EP 0873832A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grid
- powder
- tray
- compartments
- dies
- 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.)
- Withdrawn
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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
- B28B13/0295—Treating the surface of the fed layer, e.g. removing material or equalization of the surface
-
- 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
- the present invention relates to an apparatus for pressing two-layer ceramic tiles.
- the aim of the present invention is to provide an apparatus by virtue of which it is possible to obtain aesthetic and physical characteristics during pressing by acting on the distribution of the material that composes the surface layer of the tiles.
- an apparatus for pressing ceramic tiles which comprises a press which has a lower mold comprising a containment rim provided with openings and dies which are guided in said openings in order to delimit molding compartments which are meant to be filled with preset amounts of powders and to receive the pressing punches, and a powder loading device constituted by a carriage provided with a powder containment grid, actuated between a first position, in which said grid is below a feeder in order to receive the powder to be pressed, and a second position, which lies above said containment rim and at which said dies are lowered to allow to discharge said powder from said grid into said molding compartments and to allow the forming of a first layer; characterized in that on said carriage, in front of said grid, a tray is provided which is suitable to receive, from an auxiliary feeder, an amount of auxiliary powder when said grid is in said first position, said dies being actuated so that when the grid moves toward the position in which it lies above said molding compartments said dies are co-planar to the surface
- the apparatus comprises a press, which is schematically designated by the reference numeral 1, and a loading device, which is schematically designated by the reference numeral 2.
- the press 1 has an entirely conventional structure and is therefore not described in detail hereinafter. It comprises a lower half-mold 3 which is composed of a containment rim 4 in which there is a series of openings 5 which are open upward and in which the dies 6 are guided.
- the dies 6 can be raised into a position in which their active upper surface is co-planar to the surface of the containment rim 4 and lowered with one or more strokes in order to form, inside the openings 5, compartments for containing and molding the tiles.
- the compartments are designated by the same reference numeral 5 as the openings.
- Pressing punches 7 are arranged above the containment rim 4 and in alignment with the compartments 5 and are mounted on the moving beam of the press.
- the device for loading the powders to be pressed in order to form the tiles is constituted by a carriage which is composed of a frame which is guided, by means of wheels, on horizontal tracks and is motorized with a back-and-forth motion in the direction A by an actuation device. Since these elements, too, are substantially conventional, they are not described in detail. By way of information regarding the structure and the movement of the carriage, reference is made to Italian patent no. 1,235,906 in the name of the same Applicant.
- the frame frontally moves a powder containment grid 8 which is closed in a downward region by a surface 9 on which the grid slides during the reciprocating motion of the carriage.
- the sliding surface 9 is co-planar to the upper face of the containment rim 4, so that the grid 8 can pass, during its movements, from the surface 9 onto the containment rim 4 and vice versa.
- a tray 10 which is closed in a downward region by the surface 9 on which it slides. The tray 10 is installed so that it can be moved horizontally closer or further away with respect to the grid 8 by means of suitable actuators.
- a roller 11 is interposed between the tray 10 and the grid 8, has a contoured surface and can rotate about a horizontal axis which is perpendicular to the sliding direction A of the grid 8.
- the roller 11 is mounted on the carriage so that it can be raised above the sliding surface or lowered below it when, as described hereinafter, it is located at the compartments 5.
- the tray 10 is meant to contain an amount of powder which is auxiliary with respect to the amount transferred to the grid 8.
- the powder for feeding the grid 8 and the tray 10 is supplied by two respective hoppers 12 and 13 which have discharge gates actuated by conventional control means.
- the operation of the described apparatus is as follows.
- the carriage is outside the press 1 (position of figure 1), the grid 8 and the tray 10 are filled with powders which are fed by the respective hoppers 12 and 13. Then, while keeping the dies 6 raised in a co-planar position with respect to the upper face of the containment rim 4, the carriage is made to perform an advancement stroke which aligns the grid 8 above the dies 6, whilst the tray 10 is located downstream of said dies.
- the dies 6 are lowered by the chosen extent, which corresponds to the amount of powder to be transferred into the compartments 5 (see figure 3).
- the grid 8 is returned to the initial position below the hopper 12, so as to remove, by skimming, the excess powder and form a layer 14 of powder which is equal to the height of the compartments 5.
- the roller 11 is lowered into the molding compartments 5.
- the return of the tray 10 is actuated; by passing over the layer 14, the tray 10 forms a new layer 15 with the auxiliary powder discharged by the tray 10 as the tray moves toward the hopper 13.
- the layer 15 fills the recesses of the impression formed by the roller 11 on the underlying layer 14 and has an upper surface which is co-planar to the surface of the containment rim 4 by virtue of the skimming effect produced by the tray 10 (see figure 5).
- the final step of the tile forming process entails expelling the tiles from the compartments 5 by lifting the dies 6 up to the level of the upper face of the containment rim 4.
- Figure 12 illustrates an embodiment in which fixed or rotating brushes 16 and 17 are installed on the carriage upstream and downstream of the shaping roller 11 and are supported so that they can rotate about axes which are parallel to the axis of the roller 11 in order to clean the surface of the upper punches 7 and of the lower dies 6.
- Figures 8 to 11 illustrate a different operating sequence of the apparatus, in which, after the surface shaping of the lower layer 14 of powder by the roller 11, the dies 6 are lowered in order to deposit, by means of the tray 10, a greater amount of auxiliary powder on the previously formed layer and thus obtain a thicker upper layer.
- FIGS 12 to 17 are views of another embodiment of the apparatus, in which the grid 8 contains the amount of powder that is sufficient to form the base layer.
- the grid advances whilst the dies 6 are raised into a position in which they are co-planar to the upper face of the containment rim (figure 13).
- the dies 6 are lowered by means of a suitable actuation by an extent which allows the complete emptying of the grid 8 (figure 14) and the subsequent deposition of a second layer of powder.
- the grid is then returned to the initial loading position and is directly followed by the tray 10 (figure 15), which during the return stroke completes the filling of the compartments 5 with a second layer of powder whilst simultaneously skimming it.
- the tray 10 is upstream of the press, as occurs in the above described configurations, the dies 6 are lowered (figure 10) and pressing is performed (figure 17), followed by the extraction of the tile thus formed.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Ceramic Capacitors (AREA)
Abstract
Description
Claims (7)
- An apparatus for pressing ceramic tiles, comprising a press (1) which has a lower mold (3) comprising a containment rim (4) provided with openings (5) and dies (6) which are guided in said openings in order to delimit molding compartments (5) which are meant to be filled with preset amounts of powders and to receive the pressing punches (7), and a powder loading device constituted by a carriage provided with a powder containment grid (8), actuated between a first position, in which said grid (8) is below a feeder (12) in order to receive the powder to be pressed, and a second position, which lies above said containment rim (4) and at which said dies (6) are lowered to allow to discharge said powder from said grid (8) into said molding compartments (5) and to allow the forming of a first layer (14); characterized in that on said carriage, in front of said grid (8), a tray (10) is provided which is suitable to receive, from an auxiliary feeder (13), an amount of auxiliary powder when said grid (8) is in said first position, said dies (6) being actuated so that when the grid (8) moves toward the position in which it lies above said molding compartments (5), said dies (6) being co-planar to the surface of said containment rim (4) to allow said auxiliary tray (10) to move beyond said compartments (5) without discharging said auxiliary powder into them, whilst when the grid (8) has reached said second position said dies (6) move downward in order to allow the discharge of said powder into said compartments (5) and finally, when the grid (8) returns to said first position, said tray (10) allows to deposit said auxiliary powder (15) over the layer (14) formed with said first powder.
- An apparatus according to claim 1, characterized in that on said carriage, between said grid (8) and said tray (10), a roller (11) is provided which can rotate about an axis perpendicular to the direction of movement of said carriage, said roller (11) being supported on said carriage so that it can be raised above the sliding surface of said grid (8) or be lowered below said surface when it is at said compartments (5).
- An apparatus according to claim 2, characterized in that said roller (11) has a contoured surface.
- An apparatus according to claim 2, characterized in that after said roller (11) has packed said powder, said dies (6) perform a downward movement before said auxiliary tray (10) passes over said compartments (5).
- An apparatus according to claim 1, characterized in that said grid (8) is completely emptied during the discharge of the powder into said molding compartments (5), and in that said tray (10), during the return stroke, completes the filling of the compartments (5) with said layer (15) of auxiliary powder whilst simultaneously skimming it.
- An apparatus according to claim 1, characterized in that on said carriage, upstream and downstream of said tray (10), fixed or rotating brushes (16, 17) are provided for cleaning the surface of said containment rim (4) and said punches (7).
- An apparatus according to claim 1, characterized in that said tray (10) is supported so that it can be moved horizontally with respect to said grid by means of suitable actuators.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITBO970239 | 1997-04-23 | ||
IT97BO000239A IT1292873B1 (en) | 1997-04-23 | 1997-04-23 | EQUIPMENT FOR PRESSING TWO-LAYER CERAMIC TILES |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0873832A1 true EP0873832A1 (en) | 1998-10-28 |
Family
ID=11342215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98107328A Withdrawn EP0873832A1 (en) | 1997-04-23 | 1998-04-22 | Apparatus for pressing two-layer ceramic tiles |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0873832A1 (en) |
IT (1) | IT1292873B1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0909621A1 (en) * | 1997-10-16 | 1999-04-21 | Catia Corti | Method for forming and decorating unfired ceramic tiles ahead of the press and machine for carrying out the method |
EP1043133A2 (en) * | 1999-04-02 | 2000-10-11 | Martinelli Ettore s.r.l. | Tile production press with two-layer charging device |
EP1319486A2 (en) * | 2001-12-14 | 2003-06-18 | Gruppo Concorde S.p.A. | Press loading device for manufacturing ceramic tiles, press comprising said device and respective loading method |
CN102416655A (en) * | 2011-10-26 | 2012-04-18 | 严苏景 | Material distribution method and device for producing ceramic tile with criss-cross texture effect |
CN105773822A (en) * | 2014-12-24 | 2016-07-20 | 佛山市宝航机械装备行业知识产权服务有限公司 | Tile distributing device |
CN108214827A (en) * | 2018-03-16 | 2018-06-29 | 厦门市南昇机械设备有限公司 | A kind of bilayer clamp dog forcing press |
CN112976242A (en) * | 2021-01-22 | 2021-06-18 | 陈刚 | Prevent ceramic plate production of idiosome top deformation and use die-casting equipment |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITRE20030004A1 (en) * | 2003-01-20 | 2004-07-21 | Sacmi | METHOD AND PLANT FOR THE FORMING OF SLABS OR CERAMIC TILES. |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2208054A (en) * | 1937-06-21 | 1940-07-16 | Gordon W Reed | Brick press |
US2218196A (en) * | 1937-06-21 | 1940-10-15 | Gordon W Reed | Brick press |
FR1501676A (en) * | 1965-11-30 | 1967-11-10 | Process for pressing tiles of cement, ceramic or other materials, having a decorative pattern on their exposed surface | |
DE1281915B (en) * | 1965-03-27 | 1968-10-31 | Thuringia Feinkeramikmaschinen | Filling device on presses for manufacturing two-layer panels |
NL6707021A (en) * | 1967-05-22 | 1968-11-25 | Mosa Porselein & Tegelfab | METHOD AND INSTALLATION FOR PRESSING MULTILAYER TILES |
IT1214093B (en) * | 1987-04-30 | 1990-01-10 | Mass Spa | DOUBLE LOADING TROLLEY FOR MOLDS OF CERAMIC TILES |
EP0444730A2 (en) * | 1990-02-26 | 1991-09-04 | L.B. Officine Meccaniche S.P.A. | Double-loading carriage for ceramic moulds in general, and typically for the manufacture of pressure-glazed tiles |
-
1997
- 1997-04-23 IT IT97BO000239A patent/IT1292873B1/en active IP Right Grant
-
1998
- 1998-04-22 EP EP98107328A patent/EP0873832A1/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2208054A (en) * | 1937-06-21 | 1940-07-16 | Gordon W Reed | Brick press |
US2218196A (en) * | 1937-06-21 | 1940-10-15 | Gordon W Reed | Brick press |
DE1281915B (en) * | 1965-03-27 | 1968-10-31 | Thuringia Feinkeramikmaschinen | Filling device on presses for manufacturing two-layer panels |
FR1501676A (en) * | 1965-11-30 | 1967-11-10 | Process for pressing tiles of cement, ceramic or other materials, having a decorative pattern on their exposed surface | |
NL6707021A (en) * | 1967-05-22 | 1968-11-25 | Mosa Porselein & Tegelfab | METHOD AND INSTALLATION FOR PRESSING MULTILAYER TILES |
IT1214093B (en) * | 1987-04-30 | 1990-01-10 | Mass Spa | DOUBLE LOADING TROLLEY FOR MOLDS OF CERAMIC TILES |
EP0444730A2 (en) * | 1990-02-26 | 1991-09-04 | L.B. Officine Meccaniche S.P.A. | Double-loading carriage for ceramic moulds in general, and typically for the manufacture of pressure-glazed tiles |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section PQ Week 9202, Derwent World Patents Index; Class P64, AN 92-011065, XP002070634 * |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0909621A1 (en) * | 1997-10-16 | 1999-04-21 | Catia Corti | Method for forming and decorating unfired ceramic tiles ahead of the press and machine for carrying out the method |
EP1043133A2 (en) * | 1999-04-02 | 2000-10-11 | Martinelli Ettore s.r.l. | Tile production press with two-layer charging device |
EP1043133A3 (en) * | 1999-04-02 | 2003-01-02 | Martinelli Ettore s.r.l. | Tile production press with two-layer charging device |
EP1319486A2 (en) * | 2001-12-14 | 2003-06-18 | Gruppo Concorde S.p.A. | Press loading device for manufacturing ceramic tiles, press comprising said device and respective loading method |
EP1319486A3 (en) * | 2001-12-14 | 2004-05-19 | Gruppo Concorde S.p.A. | Press loading device for manufacturing ceramic tiles, press comprising said device and respective loading method |
CN102416655A (en) * | 2011-10-26 | 2012-04-18 | 严苏景 | Material distribution method and device for producing ceramic tile with criss-cross texture effect |
CN105773822A (en) * | 2014-12-24 | 2016-07-20 | 佛山市宝航机械装备行业知识产权服务有限公司 | Tile distributing device |
CN108214827A (en) * | 2018-03-16 | 2018-06-29 | 厦门市南昇机械设备有限公司 | A kind of bilayer clamp dog forcing press |
CN108214827B (en) * | 2018-03-16 | 2023-12-08 | 厦门市南昇机械设备有限公司 | Double-layer block making press |
CN112976242A (en) * | 2021-01-22 | 2021-06-18 | 陈刚 | Prevent ceramic plate production of idiosome top deformation and use die-casting equipment |
Also Published As
Publication number | Publication date |
---|---|
ITBO970239A0 (en) | 1997-04-23 |
IT1292873B1 (en) | 1999-02-11 |
ITBO970239A1 (en) | 1998-10-23 |
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