EP2882510A1 - Carrier assembly - Google Patents
Carrier assemblyInfo
- Publication number
- EP2882510A1 EP2882510A1 EP13762201.5A EP13762201A EP2882510A1 EP 2882510 A1 EP2882510 A1 EP 2882510A1 EP 13762201 A EP13762201 A EP 13762201A EP 2882510 A1 EP2882510 A1 EP 2882510A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier
- filter
- insert
- frame
- support
- 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
- 239000000203 mixture Substances 0.000 description 21
- 239000000463 material Substances 0.000 description 13
- 239000012530 fluid Substances 0.000 description 7
- 239000004568 cement Substances 0.000 description 6
- 239000004744 fabric Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000000969 carrier Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/021—Ram heads of special form
-
- 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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
- B28B7/368—Absorbent linings
-
- 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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
- B28B7/46—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for humidifying or dehumidifying
Definitions
- This invention relates to a carrier assembly for use in a cementitious press mould such as a wet concrete, hermetic or semi-dry mix press mould.
- a known cementitious press mould comprises a mould cavity having a closed base and side walls. A metered amount of cementitious mix is placed into the mould cavity and a movable press head is then moved towards the closed base to apply a high compressive pressure on to the cementitious mix.
- the press head comprises a die head having a head plate that comes into contact with the mixture contained in the mould.
- the head plate is of a shape and size that corresponds to the cross-sectional shape and size of the mould cavity.
- the base of the press mould comprises a bottom former that has a shape and size that corresponds to the cross-sectional shape and size of the mould cavity.
- a wet concrete mix is compacted, it is shaped to the shape of the mould, and excess water is squeezed out of the wet mixture.
- a result of these actions is the formation of a moulded product, such as a paving slab or kerb, for example.
- a cementitious mix designed specifically for the press mould is placed in the mould cavity.
- the cementitious mix usually consists of a face and back mix.
- the face mix normally comprises expensive aggregates with a high cement content and is generally very wet when discharged into the mould.
- the back mix is a weak semi-dry cement mix, and is placed on top of the face mix within the cavity.
- a hermetic press mould comprises a sealed base, cement enriched water from the face mix is forced through the back mix when under pressure from the press head.
- a semi dry mix having a higher cement content, and slightly wetter consistency than the back mix of a hermetic press mould is placed in the mould cavity.
- the water/cement ratio of the mix is such that on compaction from either pressure or vibration, the mix forms a solid mass to the required strength.
- the bottom former and the die head may each be described as carriers.
- one or both carriers may comprise a carrier plate.
- the carrier plate comprises the bottom former
- the plate may comprise perforations arranged in a particular pattern in order to produce a variety of patterns on products formed by the press mould.
- the pattern produced on a product is produced by the filter. This is because it is not possible to change the pattern of the perforations formed on the bottom former, since the bottom former is a permanent part of the press mould.
- the only way to change the pattern on a product formed by the press mould is therefore to change filters so that the pattern is produced on the product by means of the filter, rather than the former. It is therefore necessary to stock filters appropriate to each type of product that will be produced using the press mould.
- a carrier assembly for a cementitious press mould comprising a carrier support and a carrier insert comprising a first surface and an opposite second surface removeably engageable with the carrier support, wherein the carrier support comprises a frame adapted to receive and support the carrier insert, and the carrier insert comprises a plurality of perforations and is adapted to engage with, and be supported by the carrier frame.
- the carrier insert may have a pattern formed on its surface.
- the pattern may be formed from one or more of the plurality of perforations, or may be formed by indentions or other apertures for example.
- the drainage apertures may thus form part of the pattern, or they may comprise smaller holes that are masked by the pattern.
- the carrier assembly may comprise a bottom former.
- the carrier support comprises a bottom former support
- the carrier insert comprises a bottom former insert.
- the carrier support comprises a frame which supports the carrier insert
- the carrier insert makes contact with the carrier support around edge portions of the carrier insert only. This means that by suitably dimensioning the frame relative to the carrier insert, most of a central portion of the carrier insert will be open, and not in contact with the carrier support. This in turn means that it is possible for a fluid to drain freely away through apertures formed in the carrier insert.
- the present invention thus facilitates drainage of fluids during the moulding process.
- the carrier insert and the carrier support may be formed from any suitable material such as steel, wood or a plastics material. Any material that is capable of withstanding the forces exerted during the pressing process could be used.
- the carrier frame may comprise a plurality of corner portions.
- the carrier frame may be of any convenient shape, and may, for example comprise four corner portions.
- the corner portions may be detachable from the carrier frame. This means that the corner portions may be machined separately from the remainder of the frame. This in turn means that it is possible to produce substantially square corners.
- the carrier frame may have some other shape, not having any corner portions.
- the carrier frame may be substantially oval or circular in shape.
- the carrier support may comprise an additional support member.
- the carrier frame may be formed from a single piece of material, although in other embodiments it may be formed from a plurality of frame components.
- the frame components may be joined together by any suitable means, for example by means of adhesive, through the use of nails, screws or bolts, or means of welding or bonding, for example.
- the carrier support may comprise a ledge formed in the carrier frame, the ledge comprising a support surface adapted to receive and support the carrier insert.
- the carrier insert is adapted to make contact with the ledge along a peripheral portion of the second surface thereof.
- the ledge may comprise a plurality of drainage apertures. These drainage apertures enable fluid to drain away during use of the mould, rather than accumulating and creating a well or wet area around the edge of the former assembly.
- the ledge may comprise a plurality of ledge portions.
- the ledge portions may be spaced apart from one another.
- the ledge portions are substantially triangular in shape and are positioned at corners of the frame. In other embodiments however the ledge portions may be positioned at different parts of the frame.
- the additional support member comprises a bar extending across the carrier frame.
- the one or more additional support members may comprise a plurality of drainage apertures.
- the carrier support may comprise a plurality of drainage apertures allowing drainage of fluids during use of the mould.
- the carrier support may comprise a first surface and second opposite surface.
- the carrier insert may comprise a recess extending around the second surface to form a recessed carrier insert.
- the recessed carrier insert is engageable with the ledge of the carrier support such that the recess of the insert engages with the ledge. This means that the insert is held in position such that the second surface is substantially flush with the second surface of the carrier support.
- the carrier support and the carrier insert may be positioned at the same level relative to one another during use.
- the first surface of the carrier insert will extend above the carrier support. This means that, in use, a filter assembly can be secured around the carrier insert which will stand proud of the carrier support.
- the carrier insert may comprise a plurality of channels extending at least partially along edges of the carrier insert.
- a filter assembly comprising a carrier assembly according to the first aspect of the present invention further comprising a filter assembly engageable with the carrier assembly.
- Any suitable filter assembly may be used with a carrier assembly of the present invention.
- One particularly suitable filter assembly is described in our co-pending application No. GB 1214240.0.
- the filter assembly described therein comprises a filter comprising a filter sheet mounted on a filter frame.
- a filter assembly may be directly engageable with the carrier support of the carrier assembly according to embodiments of the invention.
- the filter sheet and filter frame may be manufactured to appropriate dimensions to fit a particular carrier support.
- the filter sheet may be attached to the filter frame by any convenient means such as by stitching, adhering, bonding through the use of ultrasonic techniques etc.
- the edges of the filter sheet may be folded around the filter frame and then glued to an underneath surface of the filter frame, for example.
- the filter frame may be made from any suitable material, such as a plastics material.
- the filter frame may be formed from polypropylene, fibreglass, carbon fibre, metal or wood, for example.
- the filter frame may be formed from a single piece of material. Alternatively it may be formed from a plurality of frame sections each of which frame sections is engageable with one or more other frame sections to form the filter frame.
- the carrier insert may serve as a carrier engagement portion engaging with the filter assembly and holding the filter in place.
- the filter frame may be shaped to have an interference fit with the carrier insert.
- a clip or other retainer may be used to hold the filter frame against the carrier insert.
- the filter sheet forming the filter comprises frame receiving portions extending around the perimeter of the fabric sheet.
- the filter comprises a plurality of separate filter strips, each strip extending along an edge of the filter sheet.
- the filter strips may be formed from any particular material and for example may be formed from a plastics material.
- the filter strips may be attached to the filter sheet by any convenient means, and may for example be adhesively attached to the filter fabric.
- the filter strips may be attached to the filter sheet by means of bonding.
- the bonding may be any type of bonding such as heat bonding or pressure bonding.
- Figure 1 is a schematic exploded representation of a filter assembly according to an embodiment of the invention
- Figure 2 is a schematic representation showing parts of the carrier support forming the carrier assembly shown in Figure 1;
- Figure 3 is a schematic representation showing how the carrier insert is positioned within the carrier support shown in Figure 2;
- Figure 4 is a schematic representation of a filter forming part of a filter assembly according to an embodiment of the invention;
- Figure 5 is a schematic representation showing how the frame strips of the filter can be positioned for engagement with the carrier insert
- Figure 6 is a schematic representation of a carrier insert for use with the filter shown in Figure 4 and comprising channels for receiving the frame strips of the filter;
- Figures 7 and 8 are schematic representations of a carrier support according to a further embodiment of the invention.
- a filter assembly according to an embodiment of the invention is designated generally by the reference numeral 2.
- the filter assembly comprises a carrier assembly 4 and a filter 6.
- the carrier assembly comprises a carrier support 8 comprising a carrier frame 10.
- the carrier frame 10 comprises a support ledge 12 extending around the carrier frame and providing a support surface.
- the ledge has a plurality of drainage apertures 14 formed therein.
- the drainage apertures 14 are through holes that allow fluid to drain away from the carrier assembly during use.
- the carrier frame 10 comprises detachable corner portions 16.
- the corner portions 16 are manufactured separately from the carrier frame 10. This enables the corners to be accurately machined avoids having rounded portions at the corners of the frame.
- the carrier assembly further comprises a carrier insert 18 shaped to fit within the carrier frame 10 such that the carrier insert 18 is supported on the ledge 12.
- the carrier insert 18 is formed with the drainage holes 20 and is also embossed with a pattern that will be transferred to a product during use of the mould.
- the drainage holes 20 may either form part of the pattern or may be formed from apertures that are smaller than those used in the pattern and therefore hidden by the pattern. In this embodiment the drainage holes are part of the pattern.
- the carrier insert is shaped to engage with the ledge 12 such that it extends above, and stands proud of the carrier frame 0.
- the filter assembly 2 comprises a filter sheet 30 and a filter frame 32.
- the filter sheet 30 may be attached to the filter frame 32 by any convenient means such as by stitching, adhesion, heat bonding, pressure bonding, ultrasonic techniques etc.
- the filter frame 32 is locatable around the carrier insert 8 that extends above the carrier frame 10.
- the carrier frame 10 as shown in Figure 1 may be formed from one sheet of material, with the corner portions 6 being formed separately to the remainder of the carrier frame 10.
- the carrier frame 40 is made up of separate components 42, 44, 46, and 48 which are joined together in any convenient manner.
- FIG 3 another embodiment of a carrier assembly according to the present invention is shown, and designated generally by the reference numeral 50.
- the carrier assembly comprises a carrier support 52 and a carrier insert 54.
- the carrier support 52 is similar to the carrier support 8 shown in Figure 1.
- the carrier insert 54 comprises a first portion 56 and a second, recessed portion 58.
- the recessed portion 58 is shaped to fit within the ledge 12 so that when the carrier insert is positioned within the carrier support 52, the recessed portion 58 extends to be level with the carrier support with an underside of the carrier support 52.
- a surface 60 of the first portion of the carrier insert is adapted to engage with the ledge 12 thus allowing the carrier insert to be supported by the carrier support 52.
- the filter assembly 70 comprises a sheet of filter fabric 72 and frame strips 74, 76, 78 and 80.
- the filter sheet comprises outer portions 82, 84, 86 and 88.
- Each of the outer portions is shaped to receive one of the frame strips 74, 76, 78 and 80.
- a respective frame strip 74, 76, 78, 80 may be attached to a outer portion 82 to 88, and the frame strips 74 to 80 may then be bent over in the direction as shown by arrows 90.
- the carrier assembly comprises a carrier insert 92.
- the sides of the insert 92 have been machined to form channels 94 shaped to receive a frame strip once it has been attached to the filter fabric.
- the filter may be pulled over the carrier insert with all four of the frame strips 74 to 80 being located in a respective channel 94. This has the effect of creating a taut filter over the face of the carrier insert.
- a carrier frame according to another embodiment of the invention is designated generally by the reference numeral 100.
- the carrier support comprises a plurality of ledge portions 102, which in this embodiment are substantially triangular in shape, and are formed in the corners of the frame.
- the carrier support comprises an additional support member 04 which provides additional support to the carrier insert.
- the ledges 102 and the additional support member 104 may comprise a plurality of drainage holes of the type shown in Figure 1 and designated by the reference numeral 12.
- the frame is formed from a plurality of frame members 106.
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)
- Sink And Installation For Waste Water (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1214241.0A GB2504751B (en) | 2012-08-09 | 2012-08-09 | Filter assembly |
GB1311932.6A GB2504848B (en) | 2012-08-09 | 2013-07-03 | Filter assembly |
GB1313470.5A GB2506011B (en) | 2012-08-09 | 2013-07-29 | Carrier Assembly |
PCT/GB2013/052090 WO2014023946A1 (en) | 2012-08-09 | 2013-08-05 | Carrier assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2882510A1 true EP2882510A1 (en) | 2015-06-17 |
EP2882510B1 EP2882510B1 (en) | 2019-06-05 |
Family
ID=49165776
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13762200.7A Active EP2882578B1 (en) | 2012-08-09 | 2013-08-05 | Filter assembly and method for assembling said filter assembly |
EP13762201.5A Active EP2882510B1 (en) | 2012-08-09 | 2013-08-05 | Carrier assembly |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13762200.7A Active EP2882578B1 (en) | 2012-08-09 | 2013-08-05 | Filter assembly and method for assembling said filter assembly |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP2882578B1 (en) |
GB (2) | GB2504848B (en) |
WO (2) | WO2014023945A1 (en) |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB411049A (en) * | 1933-12-13 | 1934-05-31 | John Millar Wilson | Improvements in the manufacture of concrete slabs and the like |
US2638655A (en) * | 1950-09-22 | 1953-05-19 | Thermo Fluid Corp | Method of producing cementitious bodies |
GB687968A (en) * | 1951-09-07 | 1953-02-25 | Cruickshank Ltd R | Filter cloths |
DE2159890C3 (en) * | 1970-12-04 | 1980-07-03 | Enrico Florenz Longinotti (Italien) | Mold for vibrating and pressing moldings made of concrete or the like, in particular concrete slabs, and a method that can be carried out with several such molds |
US3980414A (en) * | 1975-09-29 | 1976-09-14 | Owens-Corning Fiberglas Corporation | Core and pressing head of mold box assembly |
GB2100659A (en) * | 1981-06-19 | 1983-01-06 | Graham David Lyson | Moulds for concrete or plaster |
GB2128129B (en) * | 1982-08-20 | 1986-04-23 | John Richard Blake | Production of roofing tiles |
GB8412651D0 (en) * | 1984-05-17 | 1984-06-20 | Paterson Precast Ltd Robert | Pressed concrete product |
SE501352C2 (en) * | 1993-06-18 | 1995-01-23 | Machinator Ab | A filtering device |
IT1294828B1 (en) * | 1997-07-24 | 1999-04-15 | Longinotti Meccanica S R L | EQUIPMENT TO PRODUCE THIN TILES OF CEMENTITIOUS MIXTURE |
GB2365368B (en) * | 2000-08-02 | 2003-06-18 | Eco Filters Ltd | Filter assembly |
ES2253992B1 (en) * | 2004-07-15 | 2007-10-01 | Prensas De Tomelloso, S.A. | PRESSED PUNCH WITH WATER EXTRACTION SYSTEM FOR THE MANUFACTURE OF TILES. |
GB0512470D0 (en) * | 2005-06-18 | 2005-07-27 | Eco Filters Ltd | Filter assembly |
ITMI20061262A1 (en) * | 2006-06-29 | 2007-12-30 | O C E M Officina Costruzioni Elettro-Meccaniche | TILE PRODUCTION DEVICE |
GB0625072D0 (en) * | 2006-12-15 | 2007-01-24 | Eco Filters Ltd | Wear component |
-
2013
- 2013-07-03 GB GB1311932.6A patent/GB2504848B/en active Active
- 2013-07-29 GB GB1313470.5A patent/GB2506011B/en active Active
- 2013-08-05 EP EP13762200.7A patent/EP2882578B1/en active Active
- 2013-08-05 WO PCT/GB2013/052089 patent/WO2014023945A1/en active Application Filing
- 2013-08-05 WO PCT/GB2013/052090 patent/WO2014023946A1/en active Application Filing
- 2013-08-05 EP EP13762201.5A patent/EP2882510B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2014023946A1 * |
Also Published As
Publication number | Publication date |
---|---|
GB2504848B (en) | 2015-12-30 |
WO2014023946A1 (en) | 2014-02-13 |
GB2506011A (en) | 2014-03-19 |
EP2882578A1 (en) | 2015-06-17 |
GB201311932D0 (en) | 2013-08-14 |
WO2014023945A1 (en) | 2014-02-13 |
GB2504848A (en) | 2014-02-12 |
EP2882578B1 (en) | 2019-09-25 |
GB2506011B (en) | 2016-04-13 |
GB201313470D0 (en) | 2013-09-11 |
EP2882510B1 (en) | 2019-06-05 |
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