EP1074361A2 - Device for loading material into the die cavity of a mould, in particular for pressing ceramic tiles - Google Patents
Device for loading material into the die cavity of a mould, in particular for pressing ceramic tiles Download PDFInfo
- Publication number
- EP1074361A2 EP1074361A2 EP00202615A EP00202615A EP1074361A2 EP 1074361 A2 EP1074361 A2 EP 1074361A2 EP 00202615 A EP00202615 A EP 00202615A EP 00202615 A EP00202615 A EP 00202615A EP 1074361 A2 EP1074361 A2 EP 1074361A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- carriage
- travel
- travel surface
- die
- overflow
- 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
Links
- 239000000463 material Substances 0.000 title claims abstract description 41
- 239000000919 ceramic Substances 0.000 title claims description 4
- 238000013016 damping Methods 0.000 claims description 2
- 238000007790 scraping Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/30—Feeding material to presses
- B30B15/302—Feeding material in particulate or plastic state to moulding presses
- B30B15/304—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds
-
- 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
- B28B13/023—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities
-
- 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
- B28B13/023—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities
- B28B13/0255—Disposal of residual material, e.g. by means of the return stroke of the feed drawer
Definitions
- This invention relates to a device for loading material into the die cavity of a mould, in particular for pressing ceramic tiles.
- devices for some time comprising a carriage having a loading compartment the lower end of which is open, and, positioned adjacent to and coplanar with the upper surface of the die, a travel surface along which the carriage loading compartment sealedly slides and which closes the lower end of the compartment.
- the carriage is driven with reciprocating movement in a horizontal longitudinal direction between a retracted position in which the loading compartment is fed with the tile material, and an advanced position in which it lies above the die cavity, into which it releases the material through its lower end and then scrapes it with a suitable scraper means, to make it coplanar with the upper surface of the die.
- the amount of material loaded into the carriage at each cycle is necessarily at least slightly greater than the amount which later during the same cycle is released into the die cavity, to ensure that the cavity is completely filled after scraping.
- the residual material of one cycle can contaminate the material of the next cycle.
- the residual material usually consists of the material of the upper layer (scraped away by the scraper means) and in the next cycle finishes up mixed with the material of the lower layer, causing possible finished product defects.
- this material is of the type which softens at relatively low temperature, when it is heated it can soften and, as it collects in the lowest part of the tile, it can soil those machine parts with which it comes into contact, so damaging them.
- An object of the invention is to provide a device able to overcome said problems in an effective and simple manner.
- the invention is based on the idea of making all or a part of said travel surface movable, in such a manner as to define at least one transverse overflow for the fall of the material, involving the entire width of the carriage loading compartment and of the scraper means.
- This overflow is automatically opened by suitable means during the carriage return travel, and is closed during its outward travel.
- the entire travel surface is movable in a horizontal longitudinal direction between an advanced position in which it is adjacent to the die and a retracted position in which it is distant therefrom so as to leave open at least one transverse region between the front edge of the travel surface and the corresponding edge of the die, to define said overflow for the fall of the material.
- Means are also provided to move the travel surface synchronously with the carriage movement such that the carriage return travel takes place while the travel surface is in its retracted position, whereas the carriage outward travel takes place while the travel surface is in its position adjacent to the die.
- the tile pressing mould comprises a die 9 having a flat upper surface 91 in which a cavity 8 is provided, and an upper punch 7 which interacts with the cavity 8 such as to compress a quantity of material within the cavity in order to produce a pressed tile.
- the mould can be of multiple type, ie comprise several cavities 8 and a corresponding number of punches 7.
- the device of the invention is associated with the mould, in order to load the material to be pressed into the cavity 8.
- the device comprises a horizontally extending loading compartment 11 bounded by a lateral frame 12 and having in plan view a shape and dimensions identical to those of the cavity 8 (or group of cavities 8 in the case of a multiple mould), and having its lower and upper ends completely open.
- the carriage 10 comprises two longitudinal elements 13, which support both the frame 12 and other usual members positioned to the front of the frame, such as a rotary brush 14 for cleaning the upper surface 91, a transverse pusher element 15 for pushing away from the die at each cycle that tile pressed in the previous cycle, and a scraper means 17 positioned in front of the frame 12 to scrape the material discharged into the cavity 8 in order to make it coplanar with the surface 91.
- a horizontal travel surface 20 (defined by the upper surface of a horizontal table 22) positioned adjacent to and coplanar with the upper surface 91 of the die 9.
- the frame 12 and scraper means 17 which are driven with reciprocating movement in the longitudinal direction between a retracted position in which the loading compartment 11 is fed with the tile material, and an advanced position in which it releases the material into the die cavity 8 through the open lower end of the compartment 11.
- the drive means for the compartment 11 (of known type, not shown in the figures) are positioned to the rear of the travel surface 20 and drive the compartment 11 via the longitudinal elements 13.
- the travel surface 20 is of such a size as to contain in plan view the entire compartment 11 when this is pulled rearwards into its retracted position.
- the means 16 for feeding the material into the loading compartment 11 when this is in its retracted position.
- the travel surface 20 is movable in a horizontal transverse direction between an advanced position in which it is adjacent to the die 9 and forms a single plane with the upper surface 91 thereof, and a retracted position in which the travel surface 20 is distant therefrom such as to leave open between the front edge of the travel surface and the corresponding edge of the die 9 at least one transverse region defining an overflow 21 for the fall of the material (see Figure 1).
- a movable frame 25 upperly carrying the table 22 and supported by and constrained to a fixed frame 30 in such a manner as to be able to slide relative thereto in only the longitudinal horizontal direction.
- the movable frame 25 is rectangular and is positioned just above the fixed frame 30, which is also rectangular and is carried by a base structure 34 resting on the ground.
- the movable frame 25 carries on each of its two longitudinal sides 26a a pair of idle wheels 27 of horizontal transverse axis, which rotate against the upper edge of a respective lower horizontal longitudinal rail 32 fixed to a respective longitudinal side 31a of the fixed frame 30.
- One of the two pairs of wheels 27 possesses an annular groove which engages the upper portion of the cross-section of the rail 32.
- the other pair of wheels 27, positioned on the opposite side 26a, has a flat profile and rolls on an equally flat rail 32.
- the movable frame 25 also carries, on each of its two longitudinal sides 26a, a central wheel 28 which rolls against the lower edge of a respective horizontal longitudinal rail 33 fixed to a respective longitudinal side 31a and positioned above the rail 28.
- a central wheel 28 which rolls against the lower edge of a respective horizontal longitudinal rail 33 fixed to a respective longitudinal side 31a and positioned above the rail 28.
- each side 26a of the movable frame 26 there is positioned a horizontal beam 251 to which a pair of wheels 27 is applied (see Figures 3 and 4).
- the wheels 28 are carried by two vertical angular plates 252 extending downwards from the lower side of the beans 251.
- On each longitudinal side 31a of the fixed frame 30 there is positioned a horizontal beam 301 to which a longitudinal element 302 parallel to the beam is fixed and carries on its upper edge the rail 32 and on its lower edge the rail 33.
- the movable frame 25 also carries, supported by two central angular plates 252, an idle transverse shaft 35 onto the ends of which there are keyed two gearwheels 36 which engage respective horizontal longitudinal racks 37 fixed to the fixed frame 30 parallel to the direction of movement of the movable frame 25.
- the constraint provided by the gearwheels 36 acting on the racks 37 ensures that, while moving, the movable frame 25 remains rigorously parallel to itself (translational movement) without even the smallest rotation about the vertical axis of the frame 25.
- the device also comprises means for moving the travel surface 20 synchronously with the movement of the carriage 10 such that the return travel of the carriage 10 takes place while the travel surface 20 is in its retracted position, whereas its forward travel takes place while the surface 20 is in its position adjacent to the die 9.
- a pneumatic cylinder-piston unit 41 is provided to move the movable frame 25 relative to the fixed frame 30 along the horizontal longitudinal direction, in order to move the travel surface 20 away from and towards the die 9.
- the cylinder-piston unit 41 has a cylindrical body 42 carrying a pair of transverse pins 43 pivoted on elements 44 fixed to the fixed frame 30, and a movable rod 45 hinged on a transverse pin 46 carried by a bracket 47 fixed to the movable frame 25.
- each travel stop means 58 and 59 comprises two parts, one fixed to the movable frame 25 and the other fixed to the fixed frame 30, they being positioned in mutual relationship such that they abut one against the other to define said advanced and retracted positions.
- the damper means 50 each comprise a horizontal longitudinal rod 51 carried telescopically by a member 52 fixed to the fixed frame 30, and carrying at its free end a striker member 53 (of elastomeric material) and a compression spring 54 precompressed between the member 52 and the striker member 53. This makes contact with a downwardly projecting stop element 55 fixed to the movable frame 25.
- Two of the means 50 operate as decelerators when the frame 25 moves in one direction, the other two operating as decelerators when the frame 25 moves in the opposite direction, and being positioned in such geometrical relationship that the travel surface 20 moves between said two end positions, ie advanced and retracted, defined by the travel limit means 58 and 59, these positions being attained without jolting by virtue of the damping action of the springs 54 and the fluid system contained within the member 52.
- the carriage 10 is firstly brought into its retracted position, completely above the travel surface 20, where it receives the material with which to load the die 9 by the means 16. During this stage the lower end of the loading compartment 11 is closed by the surface 20.
- the carriage 10 is then slid into its advanced position above the cavity 8 in the die 9.
- the travel surface 20 is in its position adjacent to the upper edge of the die 9 and the loading compartment 11 is closed lowerly by the surface 20 and by the upper surface 91 of the die 9.
- the material falls from the compartment 11 and fills the cavity.
- the travel surface 20 On the return travel of the carriage 10 the travel surface 20 is pulled rearwards into its retracted position, to open the overflow 21.
- the entire loading compartment 11 and the scraper means 17 therefore slide above the overflow 21 and allow the residual material (which has not been deposited in the cavity 8) to fall through the overflow.
- the material which falls through the overflow 21 can be collected, for example by a collection hopper 61, and possibly be recirculated.
- Means are provided for sensing the position of the carriage 10 (of known type, not shown in the figures), coordinated with the control means for the cylinder-piston unit 41, to move the travel surface 20 (in order to close and open the overflow 21) synchronously with the movement of the carriage 10.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
Description
- This invention relates to a device for loading material into the die cavity of a mould, in particular for pressing ceramic tiles.
- For this purpose, devices have been known for some time comprising a carriage having a loading compartment the lower end of which is open, and, positioned adjacent to and coplanar with the upper surface of the die, a travel surface along which the carriage loading compartment sealedly slides and which closes the lower end of the compartment. The carriage is driven with reciprocating movement in a horizontal longitudinal direction between a retracted position in which the loading compartment is fed with the tile material, and an advanced position in which it lies above the die cavity, into which it releases the material through its lower end and then scrapes it with a suitable scraper means, to make it coplanar with the upper surface of the die.
- When in its retracted position, the carriage lies on the travel surface, the lower end of its loading compartment being closed by this surface. When the carriage then slides onto the die, said lower end is closed by the die upper surface.
- The amount of material loaded into the carriage at each cycle is necessarily at least slightly greater than the amount which later during the same cycle is released into the die cavity, to ensure that the cavity is completely filled after scraping.
- Consequently, after each cycle some of the material remains associated with the scraper means in the carriage loading compartment, causing problems.
- One of these problems is that at least a part of this residual material can remain within the carriage for several cycles and can easily be compressed or rolled between the carriage and the surfaces on which this slides, with the result that certain physical characteristics of the material can undergo alteration, in particular its density in the case of atomized material, causing defects within the bulk and on the surface of the final tile.
- A further problem arises particularly if the die is loaded with a number of different materials in a determined mutual relationship, for example a first material forming a lower layer and a second material forming the upper layer. In such cases, the residual material of one cycle can contaminate the material of the next cycle. For example, the residual material usually consists of the material of the upper layer (scraped away by the scraper means) and in the next cycle finishes up mixed with the material of the lower layer, causing possible finished product defects.
- Moreover, if this material is of the type which softens at relatively low temperature, when it is heated it can soften and, as it collects in the lowest part of the tile, it can soil those machine parts with which it comes into contact, so damaging them.
- An object of the invention is to provide a device able to overcome said problems in an effective and simple manner.
- This and further objects are attained by the device of the invention as characterised in the claims.
- The invention is based on the idea of making all or a part of said travel surface movable, in such a manner as to define at least one transverse overflow for the fall of the material, involving the entire width of the carriage loading compartment and of the scraper means. This overflow is automatically opened by suitable means during the carriage return travel, and is closed during its outward travel.
- Consequently, whereas the lower end of the carriage loading compartment is closed by the travel surface and by the upper surface of the die during the outward travel, during the return travel the residual material is made to run over the open overflow so as to completely discharge through it with the result that the carriage is completely emptied, including the material scraped away by the scraper means, before receiving a new load of material.
- In a preferred (but not exclusive) embodiment, the entire travel surface is movable in a horizontal longitudinal direction between an advanced position in which it is adjacent to the die and a retracted position in which it is distant therefrom so as to leave open at least one transverse region between the front edge of the travel surface and the corresponding edge of the die, to define said overflow for the fall of the material. Means are also provided to move the travel surface synchronously with the carriage movement such that the carriage return travel takes place while the travel surface is in its retracted position, whereas the carriage outward travel takes place while the travel surface is in its position adjacent to the die.
- The invention is described in detail hereinafter with the aid of the accompanying figures, which show one embodiment thereof by way of non-limiting example.
- Figure 1 is a simplified partly sectional vertical side elevation of the device of the invention applied to a press for pressing ceramic tiles.
- Figures 1A and 1B show the same enlarged detail of Figure 1 in two different configurations.
- Figure 2 is a section on the horizontal plane II-II of Figure 1.
- Figure 3 is a section on the vertical plane III-III of Figure 2.
- Figure 4 is a side view in the direction of the arrow IV of Figure 2.
- Figure 5 is a section on the vertical plane V-V of Figure 2.
- Figure 6 is a section on the vertical plane VI-VI of Figure 2.
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- The tile pressing mould comprises a
die 9 having a flatupper surface 91 in which acavity 8 is provided, and anupper punch 7 which interacts with thecavity 8 such as to compress a quantity of material within the cavity in order to produce a pressed tile. - The mould can be of multiple type, ie comprise
several cavities 8 and a corresponding number ofpunches 7. - The device of the invention is associated with the mould, in order to load the material to be pressed into the
cavity 8. - The device comprises a horizontally extending
loading compartment 11 bounded by alateral frame 12 and having in plan view a shape and dimensions identical to those of the cavity 8 (or group ofcavities 8 in the case of a multiple mould), and having its lower and upper ends completely open. Thecarriage 10 comprises twolongitudinal elements 13, which support both theframe 12 and other usual members positioned to the front of the frame, such as arotary brush 14 for cleaning theupper surface 91, atransverse pusher element 15 for pushing away from the die at each cycle that tile pressed in the previous cycle, and a scraper means 17 positioned in front of theframe 12 to scrape the material discharged into thecavity 8 in order to make it coplanar with thesurface 91. - To the side of the
die 9 there is a horizontal travel surface 20 (defined by the upper surface of a horizontal table 22) positioned adjacent to and coplanar with theupper surface 91 of thedie 9. Along thissurface 20 and and along thesurface 91 there sealedly slide theframe 12 and scraper means 17, which are driven with reciprocating movement in the longitudinal direction between a retracted position in which theloading compartment 11 is fed with the tile material, and an advanced position in which it releases the material into thedie cavity 8 through the open lower end of thecompartment 11. The drive means for the compartment 11 (of known type, not shown in the figures) are positioned to the rear of thetravel surface 20 and drive thecompartment 11 via thelongitudinal elements 13. - The
travel surface 20 is of such a size as to contain in plan view theentire compartment 11 when this is pulled rearwards into its retracted position. - Above the
travel surface 20 there are positioned the means 16 (of known type and shown only schematically in the figures) for feeding the material into theloading compartment 11 when this is in its retracted position. - According to the invention, the
travel surface 20 is movable in a horizontal transverse direction between an advanced position in which it is adjacent to thedie 9 and forms a single plane with theupper surface 91 thereof, and a retracted position in which thetravel surface 20 is distant therefrom such as to leave open between the front edge of the travel surface and the corresponding edge of the die 9 at least one transverse region defining anoverflow 21 for the fall of the material (see Figure 1). - In the embodiment shown in the figures, there is provided a
movable frame 25 upperly carrying the table 22 and supported by and constrained to afixed frame 30 in such a manner as to be able to slide relative thereto in only the longitudinal horizontal direction. - In detail, the
movable frame 25 is rectangular and is positioned just above thefixed frame 30, which is also rectangular and is carried by abase structure 34 resting on the ground. - The
movable frame 25 carries on each of its twolongitudinal sides 26a a pair ofidle wheels 27 of horizontal transverse axis, which rotate against the upper edge of a respective lower horizontallongitudinal rail 32 fixed to a respectivelongitudinal side 31a of thefixed frame 30. One of the two pairs ofwheels 27 possesses an annular groove which engages the upper portion of the cross-section of therail 32. The other pair ofwheels 27, positioned on theopposite side 26a, has a flat profile and rolls on an equallyflat rail 32. - The
movable frame 25 also carries, on each of its twolongitudinal sides 26a, acentral wheel 28 which rolls against the lower edge of a respective horizontallongitudinal rail 33 fixed to a respectivelongitudinal side 31a and positioned above therail 28. By virtue of the constraint produced by thewheels rails frame 25 can slide only in the direction of these rails (ie in a horizontal longitudinal direction). - In detail, in the embodiment shown in the figures, on each
side 26a of the movable frame 26 there is positioned ahorizontal beam 251 to which a pair ofwheels 27 is applied (see Figures 3 and 4). Thewheels 28 are carried by two verticalangular plates 252 extending downwards from the lower side of thebeans 251. On eachlongitudinal side 31a of thefixed frame 30 there is positioned ahorizontal beam 301 to which a longitudinal element 302 parallel to the beam is fixed and carries on its upper edge therail 32 and on its lower edge therail 33. - The
movable frame 25 also carries, supported by two centralangular plates 252, an idletransverse shaft 35 onto the ends of which there are keyed twogearwheels 36 which engage respective horizontallongitudinal racks 37 fixed to thefixed frame 30 parallel to the direction of movement of themovable frame 25. The constraint provided by thegearwheels 36 acting on theracks 37 ensures that, while moving, themovable frame 25 remains rigorously parallel to itself (translational movement) without even the smallest rotation about the vertical axis of theframe 25. - The device also comprises means for moving the
travel surface 20 synchronously with the movement of thecarriage 10 such that the return travel of thecarriage 10 takes place while thetravel surface 20 is in its retracted position, whereas its forward travel takes place while thesurface 20 is in its position adjacent to thedie 9. - According to a preferred (but not exclusive) embodiment, a pneumatic cylinder-
piston unit 41 is provided to move themovable frame 25 relative to the fixedframe 30 along the horizontal longitudinal direction, in order to move thetravel surface 20 away from and towards the die 9. In detail, the cylinder-piston unit 41 has acylindrical body 42 carrying a pair oftransverse pins 43 pivoted onelements 44 fixed to thefixed frame 30, and amovable rod 45 hinged on atransverse pin 46 carried by abracket 47 fixed to themovable frame 25. - In combination with the cylinder-
piston unit 41 there operate two pairs of travel stop means 58 and 59 with associatedimpact dampers 50, to define the advanced and retracted positions of thetravel surface 20. - In detail, each travel stop means 58 and 59 comprises two parts, one fixed to the
movable frame 25 and the other fixed to the fixedframe 30, they being positioned in mutual relationship such that they abut one against the other to define said advanced and retracted positions. The damper means 50 each comprise a horizontallongitudinal rod 51 carried telescopically by amember 52 fixed to the fixedframe 30, and carrying at its free end a striker member 53 (of elastomeric material) and acompression spring 54 precompressed between themember 52 and thestriker member 53. This makes contact with a downwardly projectingstop element 55 fixed to themovable frame 25. - Two of the
means 50 operate as decelerators when theframe 25 moves in one direction, the other two operating as decelerators when theframe 25 moves in the opposite direction, and being positioned in such geometrical relationship that thetravel surface 20 moves between said two end positions, ie advanced and retracted, defined by the travel limit means 58 and 59, these positions being attained without jolting by virtue of the damping action of thesprings 54 and the fluid system contained within themember 52. - In operation, the
carriage 10 is firstly brought into its retracted position, completely above thetravel surface 20, where it receives the material with which to load thedie 9 by themeans 16. During this stage the lower end of theloading compartment 11 is closed by thesurface 20. - The
carriage 10 is then slid into its advanced position above thecavity 8 in the die 9. Thetravel surface 20 is in its position adjacent to the upper edge of thedie 9 and theloading compartment 11 is closed lowerly by thesurface 20 and by theupper surface 91 of thedie 9. When above thecavity 8 the material falls from thecompartment 11 and fills the cavity. - On the return travel of the
carriage 10 thetravel surface 20 is pulled rearwards into its retracted position, to open theoverflow 21. Theentire loading compartment 11 and the scraper means 17 therefore slide above theoverflow 21 and allow the residual material (which has not been deposited in the cavity 8) to fall through the overflow. - Consequently, at each cycle the
loading compartment 11 and the scraper means 17 are completely emptied, as required. - The material which falls through the
overflow 21 can be collected, for example by acollection hopper 61, and possibly be recirculated. - Means are provided for sensing the position of the carriage 10 (of known type, not shown in the figures), coordinated with the control means for the cylinder-
piston unit 41, to move the travel surface 20 (in order to close and open the overflow 21) synchronously with the movement of thecarriage 10. - Numerous modifications of a practical and applicational nature can be made to the device of the invention, but without leaving the scope of the inventive idea as claimed below.
- For example, only a portion of the
travel surface 20 could be moved to form the overflow. Moreover this portion could rotate instead of translate.
Claims (5)
- A device for loading material into the die cavity of a mould, in particular for pressing ceramic tiles,comprising a loading carriage having a loading compartment with its lower end open and driven with reciprocating movement in a longitudinal direction between a retracted position in which the loading compartment is fed with the tile material, and an advanced position in which it releases the material into the die cavity through its open lower end, and having a scraper means for scraping the material in the die cavity,and comprising, positioned adjacent to and coplanar with the upper surface of the die, a travel surface along which the carriage loading compartment and the scraper means sealedly slide and which closes the lower end of the loading compartment,
characterised in that:all or a part of said travel surface is movable in such a manner as to define at least one transverse overflow for the fall of the material, involving the entire width of the carriage loading compartment and of the scraper means, means being provided for moving all or part of the travel surface in order to open and respectively close said overflow, and being coordinated with the movement of the carriage in such a manner that the carriage return travel takes place while the overflow is open, whereas its outward travel takes place while the overflow is closed. - A device as claimed in claim 1, characterised in that the entire travel surface is movable in a horizontal longitudinal direction between an advanced position in which it is adjacent to the die and a retracted position in which it is distant therefrom so as to leave open at least one transverse region between the front edge of the travel surface and the corresponding edge of the die, to define said overflow for the fall of the material, means being provided to drive the travel surface synchronously with the carriage movement such that the carriage return travel takes place while the travel surface is in its retracted position, while the carriage outward travel takes place while the travel surface is in its position adjacent to the die.
- A device as claimed in claim 1, characterised by comprising, carrying the travel surface, a movable frame constrained to a fixed frame in such a manner as to be able to slide relative thereto in only the longitudinal horizontal direction.
- A device as claimed in claim 3, characterised in that the movable frame carries an idle transverse shaft, onto the ends of which there are keyed two gearwheels which engage respective horizontal longitudinal racks fixed to the fixed frame, parallel to the direction of movement of the movable frame.
- A device as claimed in claim 3, characterised by comprising a pneumatic cylinder-piston unit arranged to move the movable frame relative to the fixed frame along the horizontal longitudinal direction such as to move the travel surface away from and towards the die, and associated with impact damping means which define the advanced and retracted positions of the travel surface.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1999RE000082A IT1310965B1 (en) | 1999-08-02 | 1999-08-02 | EQUIPMENT FOR LOADING THE MATERIAL IN THE CAVITY OF THE AMATEUR OF A MOLD, IN PARTICULAR, FOR PRESSING TILES |
ITRE990082 | 1999-08-02 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1074361A2 true EP1074361A2 (en) | 2001-02-07 |
EP1074361A3 EP1074361A3 (en) | 2003-01-02 |
EP1074361B1 EP1074361B1 (en) | 2006-08-23 |
Family
ID=11399479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00202615A Expired - Lifetime EP1074361B1 (en) | 1999-08-02 | 2000-07-20 | Device for loading material into the die cavity of a mould, in particular for pressing ceramic tiles |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1074361B1 (en) |
DE (1) | DE60030217D1 (en) |
IT (1) | IT1310965B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1273408A2 (en) * | 2001-07-05 | 2003-01-08 | SACMI COOPERATIVA MECCANICI IMOLA Soc. Coop. a r.l. | Method for loading ceramic tile forming moulds, relative means for its implementation, and tiles obtained thereby |
EP1273409A2 (en) * | 2001-07-05 | 2003-01-08 | SACMI COOPERATIVA MECCANICI IMOLA Soc. Coop. a r.l. | Method for loading ceramic tile forming moulds, plant for its implementation, and tiles obtained thereby |
EP1358983A2 (en) * | 2002-04-29 | 2003-11-05 | Gruppo Concorde S.p.A. | Device for loading moulds in a press to produce tiles and method of loading |
EP2764989A4 (en) * | 2011-10-04 | 2016-01-20 | Sanwa Kagaku Kenkyusho Co | Powder filling device with redundant powder collection mechanism, and rotary compression molding machine |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2256081A (en) * | 1940-01-05 | 1941-09-16 | Watson Stillman Co | Mold-charging apparatus |
DE1183001B (en) * | 1960-06-08 | 1964-12-03 | Paul Boehringer Maschinenfabri | Device for charging the molds of plate presses or the like. |
NL6807426A (en) * | 1968-05-24 | 1969-11-26 | ||
JPS6351107A (en) * | 1986-08-21 | 1988-03-04 | 株式会社 後藤鉄工所 | Raw material filler for multilayer tile |
EP0399281A2 (en) * | 1989-05-24 | 1990-11-28 | Gräbener Pressensysteme GmbH & Co. KG | Filling device for the automatic filling of the die of powder presses |
EP0531683A2 (en) * | 1991-09-13 | 1993-03-17 | S.I.T.I. S.p.A. Società Impianti Termoelettrici Industriali | Device for loading powder to be pressed and pressing apparatus |
JPH09239714A (en) * | 1996-03-04 | 1997-09-16 | Inax Corp | Tile base molding die |
-
1999
- 1999-08-02 IT IT1999RE000082A patent/IT1310965B1/en active
-
2000
- 2000-07-20 DE DE60030217T patent/DE60030217D1/en not_active Expired - Lifetime
- 2000-07-20 EP EP00202615A patent/EP1074361B1/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2256081A (en) * | 1940-01-05 | 1941-09-16 | Watson Stillman Co | Mold-charging apparatus |
DE1183001B (en) * | 1960-06-08 | 1964-12-03 | Paul Boehringer Maschinenfabri | Device for charging the molds of plate presses or the like. |
NL6807426A (en) * | 1968-05-24 | 1969-11-26 | ||
JPS6351107A (en) * | 1986-08-21 | 1988-03-04 | 株式会社 後藤鉄工所 | Raw material filler for multilayer tile |
EP0399281A2 (en) * | 1989-05-24 | 1990-11-28 | Gräbener Pressensysteme GmbH & Co. KG | Filling device for the automatic filling of the die of powder presses |
EP0531683A2 (en) * | 1991-09-13 | 1993-03-17 | S.I.T.I. S.p.A. Società Impianti Termoelettrici Industriali | Device for loading powder to be pressed and pressing apparatus |
JPH09239714A (en) * | 1996-03-04 | 1997-09-16 | Inax Corp | Tile base molding die |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 01, 30 January 1998 (1998-01-30) & JP 09 239714 A (INAX CORP), 16 September 1997 (1997-09-16) * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1273408A2 (en) * | 2001-07-05 | 2003-01-08 | SACMI COOPERATIVA MECCANICI IMOLA Soc. Coop. a r.l. | Method for loading ceramic tile forming moulds, relative means for its implementation, and tiles obtained thereby |
EP1273409A2 (en) * | 2001-07-05 | 2003-01-08 | SACMI COOPERATIVA MECCANICI IMOLA Soc. Coop. a r.l. | Method for loading ceramic tile forming moulds, plant for its implementation, and tiles obtained thereby |
EP1273408A3 (en) * | 2001-07-05 | 2004-06-16 | SACMI COOPERATIVA MECCANICI IMOLA Soc. Coop. a r.l. | Method for loading ceramic tile forming moulds, relative means for its implementation, and tiles obtained thereby |
EP1273409A3 (en) * | 2001-07-05 | 2004-06-23 | SACMI COOPERATIVA MECCANICI IMOLA Soc. Coop. a r.l. | Method for loading ceramic tile forming moulds, plant for its implementation, and tiles obtained thereby |
US6911167B2 (en) | 2001-07-05 | 2005-06-28 | Sacmi-Cooperativa Meccanici Imola-Soc. Coop. A.R.L. | Method for loading ceramic tile forming moulds, relative means for its implementation, and tiles obtained thereby |
EP1358983A2 (en) * | 2002-04-29 | 2003-11-05 | Gruppo Concorde S.p.A. | Device for loading moulds in a press to produce tiles and method of loading |
EP1358983A3 (en) * | 2002-04-29 | 2005-04-13 | Gruppo Concorde S.p.A. | Device for loading moulds in a press to produce tiles and method of loading |
EP2764989A4 (en) * | 2011-10-04 | 2016-01-20 | Sanwa Kagaku Kenkyusho Co | Powder filling device with redundant powder collection mechanism, and rotary compression molding machine |
Also Published As
Publication number | Publication date |
---|---|
DE60030217D1 (en) | 2006-10-05 |
EP1074361A3 (en) | 2003-01-02 |
ITRE990082A0 (en) | 1999-08-02 |
EP1074361B1 (en) | 2006-08-23 |
ITRE990082A1 (en) | 2001-02-02 |
IT1310965B1 (en) | 2002-02-27 |
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