EP3268194A1 - An apparatus and a method to produce a hollow-core or solid slab - Google Patents
An apparatus and a method to produce a hollow-core or solid slabInfo
- Publication number
- EP3268194A1 EP3268194A1 EP16761139.1A EP16761139A EP3268194A1 EP 3268194 A1 EP3268194 A1 EP 3268194A1 EP 16761139 A EP16761139 A EP 16761139A EP 3268194 A1 EP3268194 A1 EP 3268194A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow
- core
- slab
- screws
- mass
- 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
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000007787 solid Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 210000000056 organ Anatomy 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 239000002994 raw material Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007569 slipcasting 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
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/22—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded by screw or worm
- B28B3/228—Slipform casting extruder, e.g. self-propelled extruder
-
- 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
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/084—Producing shaped prefabricated articles from the material by vibrating or jolting the vibrating moulds or cores being moved horizontally for making strands of moulded articles
-
- 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
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/22—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded by screw or worm
- B28B3/222—Screw or worm constructions
Definitions
- the object of this invention is an apparatus and method to produce 5 hollow-core or solid slabs.
- the mentioned apparatus consists of a feeding organ to feed material into the apparatus, at least certain stoppers, to the hollow-core or solid slab under production and to the base limited work space to form the hollow-core or solid slab, in a row placed, around their lengthwise axels rotating set screws to mix the mass and to 10 move it into the space inside the stoppers forming the outer limits of the hollow-core or solid slab profile and to tighten there and as the bushes set to be continuation of the form the hollows to the slabs when hollow- core slab is being produced.
- the usages of the invention are the hollow-core slabs that include the hollows inside the slab. Normally, these hollows are side by side holes from end-to-end and their meaning is to make the weight of the slab lighter.
- the hollows are designed and realized as a compromise of the weight, dimensions, and the tensile properties of the slab.
- the hollow-core slabs are produced according ⁇ o the known technique so that an apparatus, e.g. an extruder that includes a feed hopper for the material (concrete mass) which feed hopper is moved upon its bed that is upon the casting bed where the hollow-core slab is formed. Be- fore extruding the mass, the pretension span cords to be situated inside the slab or corresponding parts that strengthen the slab are placed to their places.
- an apparatus e.g. an extruder that includes a feed hopper for the material (concrete mass) which feed hopper is moved upon its bed that is upon the casting bed where the hollow-core slab is formed.
- Be- fore extruding the mass Be- fore extruding the mass, the pretension span cords to be situated inside the slab or corresponding parts that strengthen the slab are placed to their places.
- limiters or stoppers that limit the sides of the slab to be produced to a certain width and form, if needed, the side joint profiles, upper side to a certain height from the bed, and the
- Horizontal bushes have also been installed into the extruder in the work space between the before mentioned stoppers and the end limiter and screws in the same direction as their length axels and reaching the ends of the bushes.
- the mentioned screw can be found at the location of every hollow the shape of which is in the lengthwise direction conical so that its thicker end is in the side of the bush and the thinner end farther from it.
- the screws are rotated by the motors behind the end stoppers into different directions so that the screws at the different sides of the width wise centre of the slab rotate in groups into different directions.
- the rotating di- rections of the screws are such that their upper parts turn into the direction of the sides of the slab under production
- the concrete mass moves and gets tightened around the bushes and inside the stoppers into the direction of the sides of the slab to be formed.
- the crowns of the screws press and tighten the concrete mass into the di- rection of the slab under production, that is in the opposite direction than where to the extruder is moving.
- two or more screws side by side have the same motor and all the screws have either same or almost same rotation speed or the outer screws have a slightly greater rotation speed.
- readymade hollow-core slab appears from under if. Solid slabs are produced nowadays with the same apparatus and methods, as described above. Naturally, the bushes to make hollows are not needed in that case
- the known technique has a number of drawbacks. It can be said from experience that the miscibility of the concrete mass in the point where the slab is formed is inconvenient poor. A screw group rotating into the same direction is not able to mix the concrete mass efficiently. This drawback is emphasized even more as the concrete in the feeding hopper forms dryer or wetter parts in which case the need for mixing in the place where the slab is formed is higher that otherwise. It is known that it is possible that in the winter time some snow gets into the feeding hopper and then also the mixing of the contents of the hopper in the producing process is very important.
- the greatest advantage of the invention can be seen to be the efficient mixing of the concrete mass and a considerable rising of the flow volume in the production of the hollow-core and solid slabs. This leads into a significant rise of the production speed and a better quality.
- hollow-core slab means all kinds of construction elements with all kinds of shape of lightening hollows
- solid slab means all kinds of construction slabs without any kinds and shape of hollows which slabs are used in the construction industry.
- motor means a motor rotating a screw either by itself or together with a transmission gear between the motor and the screw.
- fig 2 presents the before mentioned setting seen directly from the side
- fig 3 presents the same setting seen from the direction X
- fig 6 presents the cut from the place of the middle axels of the screws according to the cut C-C of the figure 4,
- FIG 1 it has been presented the apparatus 100 according to the invention to produce the hollow-core slabs that is an extruder, and a hollow-core slab 200 under preparation and the bed 300 under the hollow-core slab.
- the parts of the apparatus are body 10, the feeding organ 1 1 that is used ⁇ o feed the production material of the slab that is in this example a hopper and the wheels 12.
- the 20 mass is concrete in this case.
- FIG 4 the cut A-A of the figure 3 has been presented and there can be seen the work space 7 that is formed under the feeding organ 1 1 and upon the bed 300.
- two cuts have been presented and the pictures of these cuts have been presented in figures 5 and 6.
- Figure 5 presents the cut B-B that is a horizontal cut of the before mentioned setting at the height of the middle lines of the screws and there can be seen the work space 7 where the greatest part of the organs of the apparatus 100 that produce the hollow-core slab are situated, like screws l a- I d, bushes, side stoppers 3, the separate motors 4a, 4b, etc. for each screw etc. and the end stopper 6.
- the apparatus has also a top stop- per 5 that defines the height of the hollow-core slab that is produced.
- a hollow-core slab 200 is formed between the mentioned stoppers as a slip casting and its hollows 200.1 are formed according to the outer dimensions of the bushes.
- the mentioned stoppers form the outer limits 200.2 of the profile of the hollow- core slab.
- the rotation directions and speed of the screws l a, l b, etc. can be changed during the production of the hollow-core and solid slabs even completely arbitrarily, e.g. forwards, backwards, and thus the wanted properties can be boosted case by case in the flow of the mass.
- These changes in the operation of the screws can be programmed to take place as a time function and these programs can be made to happen in different forms in the connection of the different hollow-core and solid slabs.
- this way of using the screws is very useful. As a whole, with these capabilities of the apparatus 100 the advance speed can be increased considerably and thus the production speed of the slab becomes faster.
- the mentioned screws can also be set to rotate around its middle axel or its any other lengthwise axel. And thus as one application of the in- vention wabbler shaft rotation can come in the question.
- the apparatus 100 be made by any known way when applying the invention.
- the hollow-core 200 or solid slab made by the apparatus and method according to the invention can be of its dimensions any nowadays known slab.
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)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16761139T PL3268194T3 (en) | 2015-03-09 | 2016-03-07 | An apparatus and a method to produce a hollow-core or solid slab |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20150066A FI127678B (en) | 2015-03-09 | 2015-03-09 | Device and method for producing a well plate or a massive plate |
PCT/FI2016/000006 WO2016142574A1 (en) | 2015-03-09 | 2016-03-07 | An apparatus and a method to produce a hollow-core or solid slab |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3268194A1 true EP3268194A1 (en) | 2018-01-17 |
EP3268194A4 EP3268194A4 (en) | 2018-10-17 |
EP3268194B1 EP3268194B1 (en) | 2020-10-28 |
Family
ID=56879209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16761139.1A Active EP3268194B1 (en) | 2015-03-09 | 2016-03-07 | An apparatus and a method to produce a hollow-core or solid slab |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3268194B1 (en) |
DK (1) | DK3268194T3 (en) |
ES (1) | ES2836147T3 (en) |
FI (1) | FI127678B (en) |
PL (1) | PL3268194T3 (en) |
UA (1) | UA120001C2 (en) |
WO (1) | WO2016142574A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI62783C (en) * | 1977-08-10 | 1983-03-10 | Paraisten Kalkki Oy | GLIDGJUTMASKIN AVSEDD ATT ANVAENDAS FOER FRAMSTAELLNING AV HAOLPLATTOR OCH LIKNANDE |
FI850837A0 (en) * | 1985-03-01 | 1985-03-01 | Kt Suunnittelu Oy | GLIDGJUTMASKIN FOER FRAMSTAELLNING AV BETONGELEMENT. |
FI84575C (en) * | 1988-09-14 | 1991-12-27 | Partek Ab | FOERFARANDE OCH GLIDGJUTNINGSMASKIN FOER GJUTNING AV EN ELLER FLERA PARALLELLA BETONGPRODUKTER. |
RU2293650C1 (en) * | 2005-09-09 | 2007-02-20 | Николай Павлович Селиванов | Method of manufacture of the building structures and the building structure manufactured by this method |
RU2293651C1 (en) * | 2005-09-09 | 2007-02-20 | Николай Павлович Селиванов | Extruder |
FI122389B (en) * | 2010-04-16 | 2011-12-30 | Jouni Ahonen | Method and arrangement for feeding and compacting concrete and feed screw |
-
2015
- 2015-03-09 FI FI20150066A patent/FI127678B/en active IP Right Grant
-
2016
- 2016-03-07 WO PCT/FI2016/000006 patent/WO2016142574A1/en active Application Filing
- 2016-03-07 ES ES16761139T patent/ES2836147T3/en active Active
- 2016-03-07 PL PL16761139T patent/PL3268194T3/en unknown
- 2016-03-07 EP EP16761139.1A patent/EP3268194B1/en active Active
- 2016-03-07 DK DK16761139.1T patent/DK3268194T3/en active
- 2016-03-07 UA UAA201709809A patent/UA120001C2/en unknown
Also Published As
Publication number | Publication date |
---|---|
UA120001C2 (en) | 2019-09-10 |
EP3268194A4 (en) | 2018-10-17 |
WO2016142574A8 (en) | 2018-02-01 |
FI20150066A (en) | 2016-09-10 |
ES2836147T3 (en) | 2021-06-24 |
DK3268194T3 (en) | 2020-12-07 |
FI127678B (en) | 2018-11-30 |
WO2016142574A1 (en) | 2016-09-15 |
EP3268194B1 (en) | 2020-10-28 |
PL3268194T3 (en) | 2021-05-04 |
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