CA1270624A - Method and device for the casting of concrete products - Google Patents
Method and device for the casting of concrete productsInfo
- Publication number
- CA1270624A CA1270624A CA000494831A CA494831A CA1270624A CA 1270624 A CA1270624 A CA 1270624A CA 000494831 A CA000494831 A CA 000494831A CA 494831 A CA494831 A CA 494831A CA 1270624 A CA1270624 A CA 1270624A
- Authority
- CA
- Canada
- Prior art keywords
- top wall
- movement
- casting
- walls
- longitudinal axis
- 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.)
- Expired - Lifetime
Links
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
- 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
- B28B3/228—Slipform casting extruder, e.g. self-propelled extruder
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)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Panels For Use In Building Construction (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
Method and device for the casting of concrete products by means of a continuous slide-casting method. The concrete mix is compacted by displacing one or several walls of the slide-casting mould structure. The wall of the slide-casting mould structure is displaced along a predetermined path of movement while facing the forming member forming the cavity and moving eccentrically relative its centre axis or moving back and forth around an articulated shaft.
Method and device for the casting of concrete products by means of a continuous slide-casting method. The concrete mix is compacted by displacing one or several walls of the slide-casting mould structure. The wall of the slide-casting mould structure is displaced along a predetermined path of movement while facing the forming member forming the cavity and moving eccentrically relative its centre axis or moving back and forth around an articulated shaft.
Description
~L27~6~
The present invention is concerned with a method for the casting of concrete products by means of a continuous slide-casting method, whereat the concrete mix is compacted by displacing one or several walls of the slide-casting mould structure. The invention is also concerned with a device for the casting of con-crete products by means of the continuous slide-casting method, whereat the device includes longitudinal walls as well as, inside the said walls, one or several forming members that form cavities.
The slide-casting technique for the manu-facture of hollow slabs is commonly known. E.g., in the US Patent 4,046,848, the manufacture of hollow slabs is described. In prior art, different methods are known for the compacting of the concrete mix in slide casting.
Vibrators are commonly used for vibrating the inside and outside wall of the casting mould and for com-pacting the eoncrete mix. A drawback of the vibrators is, however, the noise caused by them. Moreover, as a result of the oscillation, the accuracy of dimensions and shape of the product deteriorates.
~rom the Finnish Patents 64,072 and 64,703, a method is known for the compacting of stiff eoncrete mix so that, in stead of vibration, shearing forces are applied to the mix so as to compaet the mix. The shear forees are produeed by pivoting two opposite mould walls baek and forth in the same direetion relative eaeh other.
The object of the present invention is to provide a casting method in which the compacting takes place at the same time both efficiently and free of noise. At the same time, the quality of the face of the product is improved as compared with the products manufactured by means of the prior-art technique.
J.27~ 4 According to the present invention, there is provided a method of casting a concrete product by means of continuous slide-casting in which the concrete mix is subjected to pressure by meansof spiral screw means, the concrete mix is compacted by forcible displacement of one or more longitudinal walls and one or more cavities are formed in the product by means of one or more forming members provided between the walls with a top wall of the longitudinal walls being positioned above the one or more forming members; method wherein eaeh forming member has a longitudinal axis and is moved to alter the angle of said longitudinal axis in relation to a predetermined artieulation point, and wherein the concrete mix is eompaeted by said top wal]. being repea-tedly forcibly displaeed along a predetermined path of movement.
Aeeording to the present invention, there is also provided a device for the casting of a eonerete product by means of eontinuous slide-easting, said deviee eomprising a plurality of longitudinal walls ineluding a top wall, means for foreibly displacing at least one of the walls to eompaet the eonerete mix, spiral serew means for feeding the eonerete mix, and one or more forming members provided between the walls, for forming eaviti.es in the concrete product, wi-th the top wall being positioned above the forming members; device wherein each forming member has a longitudinal axis and is movable to alter the angle of said longitudinal axis in relation to a predetermined artieulation point; and wherein a displaeement means is arranged to drive said top wall repeatedly along a predetermined path of movement .
" ~706;~4 At the initial end of the mix flow, the amplitude of the wall is remarkably high, being reduced to zero at the trailing end. In other words, the movement becomes smaller towards the trailing end of the compacting mechanism. If required, a so-called levelling board follows after the mobile compacting board.
The invention and its details will be described in the following with reference to the accompanying drawings, wherein Figure 1 is a general view of a hollow-slab machine, seen from the side and partly in section, Figure 2 is a sectional side view of a detail of one embodiment of the invention, Figure 3 shows a cross section of the embodiment shown in Fig. 2, Figure 4 is a side view of a second embodiment of the invention, Figure 5 shows a cross section of the embodiment shown in Fig. 4, Figure 6 is a side view of a third embodiment of the invention, Figure 7 shows a cross-section of the embodiment shown in Fig. 6, Figure 8 is a side view o~ a fourth embodiment of the invention, --~ ;~7~t6~4 Figure 9 shows a cross section of the embodi-ment shown ln Fig. 8, Figure 10 shows the embodiment of Fig. 8 as viewed from the top, 5Figure 11 is a side view of a fifth embodi-ment of the invention, Figure 12 shows a cross section of the embodi-ment shown in Fig. 11, Figure 13 is a side view of a sixth embodi-ment of the invention, Figure 14 shows a cross section of the embodi-ment shown in Fig. 13, and Figure 15 shows the embodiment of Fig. 13 as viewed from the top.
15At the initial end of the slide-casting machine, there is a feeding funnel 1 for feeding the concrete mix. Depending on the size of the slab to be cast, the machine is provided with one or several spiral screws 2, which are in such a way conical that they become larger towards the final end of the machine.
After the spiral screw 2, a cavity mandrel 3 is fitted, which is, if required, followed by a follower tube 4.
The rear end of the cavity mandrel 3 is fixed, e.g., by means of a ball joint or equivalent mode of fastening which permits a change in the angle of the axis, and the forward end of the mandrel performs an eccentric movement relative the longitudinal axis and compacts the mix around the cavity. Moreover, the device is provided with a compacting board 5 and side boards 6.
Behind the compacting board 5, there is a levelling board 8. The machine moves on a base 9, being sup-ported on wheels 10, in the direction indicated by the arrow.
In the embodiment shown in Figures 2 and 3, the compacting board 5 is, by its trailing end, fixed to a horizontal transverse shaft 11. The front end oE the compacting board is connected to a motor 14 in ~L~7~36~
a suitable way, e.g. by the intermediate of an arm 12 and an eccentric cam 13. By means of the eccentric cam, the front end of the board is displaced back and forth up and down. The path of movement is illustrated as a side view in the bottom part of Fig. 2. Towards the trailing end, the movement of the board is reduced to zero. The movement may be synchronized with the eccentric movement of the cavity mandrel 3 so that the rising and falling of the board take place at the same time as the rising and falling of the cavity mandrel.
The frequency of the movement of rising and falling of the board may also differ from the frequency of the movement of the mandrel, and they may be in a suitable mutual relationship. In this way, in the portion of the slab placed above the cavities, in the mix, a shearing movement is produced, which, together with the pressure produced by the screws and with the movement of the mandrels, compacts the mix. The direction of movement of the board may, however, also be contrary to the movement of rising and falling of the mandrel.
Moreover, at the sides of the device, a groove former 30 is connected with the board 5 by means of a lever arm 29, the said groove former 30 moving along with the board 5 up and down. The final end of the groove former is linked to the side board 6 by means of a pin 31. In this way, the movement of the groove former is at the initial end at the maximum and at the final end zero. This groove former promotes the com-pacting of the slab at the lateral areas of the slab.
In the embodiment of Figures 4 and 5, the transverse shaft 11 at the trailing end of the board 5 is attached to an articulated arm 15, whose top end is attached to a transverse shaft 16. The front end of the board 5 is displaced by means of an eccentric cam 17 along a path of movement revolving around a transverse shaft. The movement of the trailing end of the board is in the vertical direction zero, but in the 127~6;~4 horizontal direction the length of the path of rnovement corresponds to the stroke length provided by the eccentric cam when the articulated arm 15 swings around the shaft 16. The path of movement of the board is illustrated as a side view in the bottom part of Fig. 4.
In the embodiment of Figures 6 and 7, the trailing end of the board 5 is attached to a vertical shaft 18 by means of a ball joint 21 or equivalent. The front end of the board 5 is attached to an eccentric cam 20 by the intermediate of a transverse arm 19, the said eccentric cam 20 providing a horizontal transverse movement back and forth for the front end of the board.
At the trailing end, the movement is zero at the ball joint 21, but at the sides of the board mainly movement in the longitudinal direction of the slab. The direc-tion of movement of the front end of the board 5 is contrary to the lateral movement of the mandrel 3, but the direction may also be the same. The path of move-ment of the board is illustrated as viewed from the topin the bottom part of Fig~ 6.
In the embodiment of Figures 8 to 10, the compacting plane 5 is supported by means of two vertical shafts 22. At the lower end of each shaft 22, there is an eccentric cam 23, which brings the plane 5 into a horizontal grinding movement. The path of movement is illustrated as a top view in the bottom part of Fig.
10. The lateral component of the movement of the board may be either of opposite direction or of the same direction compared with the horizontal component of the movement of the front end of the mandrels 3.
In the embodiment of Figures 11 and 12, one or, side by side, several eccentric cams 24 synchronized with each other are connected with the front end of the compacting plane 5, which said eccentric cams 24 re-volve eccentrically relative the longitudinal axis 25.
Thereby, the front end of the board 5 receives a rotary " 1~70624 movement so that it rises and falls and moves to both sides. In other words, the movement takes place in a vertical transverse plane. The trailing end of the board 5 is supported at the middle preferably, e.g., by means of a ball joint 21 so that the movement of the plane 5 at the joint is zero but, at the trailing end at the sides of the board, longitudinal movement. The movement of the board 5 may be synchronized and either of the same direction or of opposite direction relative the movement of the mandrels 3.
In the embodiment of Figures 13 to 15, the compacting board unit 5 consists, e.g., of three sub-sequent transverse beams 5', which are attached to two or more longitudinal binder beams 27 by means of articulated joints 26. At their trailing ends, the binder beams are attached to vertical shafts 28. By means of an arm 19 and an eccentric cam 20, the system of beams is brought into a transverse horizontal move-ment, which is reduced towards the trailing end. The movement may be synchronized and either of opposite direction or of the same direction relative the hori-zontal component of the movement of the mandrels 3.
The invention is not restricted to ,the above embodiments onl~, but it may show variation in many ways within the scope of the patent claims. The move-mec of the compacting board 5 may be synchronized with the movement of the mandrels 3, being either of the same direction or of opposite direction. The movements may also have a certain other phase angle.
The frequency of the movement of the compacting board 5 may also differ from the frequency of the movement of the mandrels 3. This is accomplished by selecting the speeds of rotation of the eccentric cams appropriately.
Besides being an eccentric movement produced by means of a ball joint or equivalent placed at the trailing end, the movement of the mandrels 3 may also be a movement taking place relative a vertical or l~U~i2~
horizontal shaft placed at the trailing end.
In stead of using an eccentric cam, it is also possible to use, e.g., a hydraulic cylinder for displacing the upper board.
The groo~e formers 30 may also be used in the devices of the other embodiments, besides that shown in Figures 2 and 3.
The present invention is concerned with a method for the casting of concrete products by means of a continuous slide-casting method, whereat the concrete mix is compacted by displacing one or several walls of the slide-casting mould structure. The invention is also concerned with a device for the casting of con-crete products by means of the continuous slide-casting method, whereat the device includes longitudinal walls as well as, inside the said walls, one or several forming members that form cavities.
The slide-casting technique for the manu-facture of hollow slabs is commonly known. E.g., in the US Patent 4,046,848, the manufacture of hollow slabs is described. In prior art, different methods are known for the compacting of the concrete mix in slide casting.
Vibrators are commonly used for vibrating the inside and outside wall of the casting mould and for com-pacting the eoncrete mix. A drawback of the vibrators is, however, the noise caused by them. Moreover, as a result of the oscillation, the accuracy of dimensions and shape of the product deteriorates.
~rom the Finnish Patents 64,072 and 64,703, a method is known for the compacting of stiff eoncrete mix so that, in stead of vibration, shearing forces are applied to the mix so as to compaet the mix. The shear forees are produeed by pivoting two opposite mould walls baek and forth in the same direetion relative eaeh other.
The object of the present invention is to provide a casting method in which the compacting takes place at the same time both efficiently and free of noise. At the same time, the quality of the face of the product is improved as compared with the products manufactured by means of the prior-art technique.
J.27~ 4 According to the present invention, there is provided a method of casting a concrete product by means of continuous slide-casting in which the concrete mix is subjected to pressure by meansof spiral screw means, the concrete mix is compacted by forcible displacement of one or more longitudinal walls and one or more cavities are formed in the product by means of one or more forming members provided between the walls with a top wall of the longitudinal walls being positioned above the one or more forming members; method wherein eaeh forming member has a longitudinal axis and is moved to alter the angle of said longitudinal axis in relation to a predetermined artieulation point, and wherein the concrete mix is eompaeted by said top wal]. being repea-tedly forcibly displaeed along a predetermined path of movement.
Aeeording to the present invention, there is also provided a device for the casting of a eonerete product by means of eontinuous slide-easting, said deviee eomprising a plurality of longitudinal walls ineluding a top wall, means for foreibly displacing at least one of the walls to eompaet the eonerete mix, spiral serew means for feeding the eonerete mix, and one or more forming members provided between the walls, for forming eaviti.es in the concrete product, wi-th the top wall being positioned above the forming members; device wherein each forming member has a longitudinal axis and is movable to alter the angle of said longitudinal axis in relation to a predetermined artieulation point; and wherein a displaeement means is arranged to drive said top wall repeatedly along a predetermined path of movement .
" ~706;~4 At the initial end of the mix flow, the amplitude of the wall is remarkably high, being reduced to zero at the trailing end. In other words, the movement becomes smaller towards the trailing end of the compacting mechanism. If required, a so-called levelling board follows after the mobile compacting board.
The invention and its details will be described in the following with reference to the accompanying drawings, wherein Figure 1 is a general view of a hollow-slab machine, seen from the side and partly in section, Figure 2 is a sectional side view of a detail of one embodiment of the invention, Figure 3 shows a cross section of the embodiment shown in Fig. 2, Figure 4 is a side view of a second embodiment of the invention, Figure 5 shows a cross section of the embodiment shown in Fig. 4, Figure 6 is a side view of a third embodiment of the invention, Figure 7 shows a cross-section of the embodiment shown in Fig. 6, Figure 8 is a side view o~ a fourth embodiment of the invention, --~ ;~7~t6~4 Figure 9 shows a cross section of the embodi-ment shown ln Fig. 8, Figure 10 shows the embodiment of Fig. 8 as viewed from the top, 5Figure 11 is a side view of a fifth embodi-ment of the invention, Figure 12 shows a cross section of the embodi-ment shown in Fig. 11, Figure 13 is a side view of a sixth embodi-ment of the invention, Figure 14 shows a cross section of the embodi-ment shown in Fig. 13, and Figure 15 shows the embodiment of Fig. 13 as viewed from the top.
15At the initial end of the slide-casting machine, there is a feeding funnel 1 for feeding the concrete mix. Depending on the size of the slab to be cast, the machine is provided with one or several spiral screws 2, which are in such a way conical that they become larger towards the final end of the machine.
After the spiral screw 2, a cavity mandrel 3 is fitted, which is, if required, followed by a follower tube 4.
The rear end of the cavity mandrel 3 is fixed, e.g., by means of a ball joint or equivalent mode of fastening which permits a change in the angle of the axis, and the forward end of the mandrel performs an eccentric movement relative the longitudinal axis and compacts the mix around the cavity. Moreover, the device is provided with a compacting board 5 and side boards 6.
Behind the compacting board 5, there is a levelling board 8. The machine moves on a base 9, being sup-ported on wheels 10, in the direction indicated by the arrow.
In the embodiment shown in Figures 2 and 3, the compacting board 5 is, by its trailing end, fixed to a horizontal transverse shaft 11. The front end oE the compacting board is connected to a motor 14 in ~L~7~36~
a suitable way, e.g. by the intermediate of an arm 12 and an eccentric cam 13. By means of the eccentric cam, the front end of the board is displaced back and forth up and down. The path of movement is illustrated as a side view in the bottom part of Fig. 2. Towards the trailing end, the movement of the board is reduced to zero. The movement may be synchronized with the eccentric movement of the cavity mandrel 3 so that the rising and falling of the board take place at the same time as the rising and falling of the cavity mandrel.
The frequency of the movement of rising and falling of the board may also differ from the frequency of the movement of the mandrel, and they may be in a suitable mutual relationship. In this way, in the portion of the slab placed above the cavities, in the mix, a shearing movement is produced, which, together with the pressure produced by the screws and with the movement of the mandrels, compacts the mix. The direction of movement of the board may, however, also be contrary to the movement of rising and falling of the mandrel.
Moreover, at the sides of the device, a groove former 30 is connected with the board 5 by means of a lever arm 29, the said groove former 30 moving along with the board 5 up and down. The final end of the groove former is linked to the side board 6 by means of a pin 31. In this way, the movement of the groove former is at the initial end at the maximum and at the final end zero. This groove former promotes the com-pacting of the slab at the lateral areas of the slab.
In the embodiment of Figures 4 and 5, the transverse shaft 11 at the trailing end of the board 5 is attached to an articulated arm 15, whose top end is attached to a transverse shaft 16. The front end of the board 5 is displaced by means of an eccentric cam 17 along a path of movement revolving around a transverse shaft. The movement of the trailing end of the board is in the vertical direction zero, but in the 127~6;~4 horizontal direction the length of the path of rnovement corresponds to the stroke length provided by the eccentric cam when the articulated arm 15 swings around the shaft 16. The path of movement of the board is illustrated as a side view in the bottom part of Fig. 4.
In the embodiment of Figures 6 and 7, the trailing end of the board 5 is attached to a vertical shaft 18 by means of a ball joint 21 or equivalent. The front end of the board 5 is attached to an eccentric cam 20 by the intermediate of a transverse arm 19, the said eccentric cam 20 providing a horizontal transverse movement back and forth for the front end of the board.
At the trailing end, the movement is zero at the ball joint 21, but at the sides of the board mainly movement in the longitudinal direction of the slab. The direc-tion of movement of the front end of the board 5 is contrary to the lateral movement of the mandrel 3, but the direction may also be the same. The path of move-ment of the board is illustrated as viewed from the topin the bottom part of Fig~ 6.
In the embodiment of Figures 8 to 10, the compacting plane 5 is supported by means of two vertical shafts 22. At the lower end of each shaft 22, there is an eccentric cam 23, which brings the plane 5 into a horizontal grinding movement. The path of movement is illustrated as a top view in the bottom part of Fig.
10. The lateral component of the movement of the board may be either of opposite direction or of the same direction compared with the horizontal component of the movement of the front end of the mandrels 3.
In the embodiment of Figures 11 and 12, one or, side by side, several eccentric cams 24 synchronized with each other are connected with the front end of the compacting plane 5, which said eccentric cams 24 re-volve eccentrically relative the longitudinal axis 25.
Thereby, the front end of the board 5 receives a rotary " 1~70624 movement so that it rises and falls and moves to both sides. In other words, the movement takes place in a vertical transverse plane. The trailing end of the board 5 is supported at the middle preferably, e.g., by means of a ball joint 21 so that the movement of the plane 5 at the joint is zero but, at the trailing end at the sides of the board, longitudinal movement. The movement of the board 5 may be synchronized and either of the same direction or of opposite direction relative the movement of the mandrels 3.
In the embodiment of Figures 13 to 15, the compacting board unit 5 consists, e.g., of three sub-sequent transverse beams 5', which are attached to two or more longitudinal binder beams 27 by means of articulated joints 26. At their trailing ends, the binder beams are attached to vertical shafts 28. By means of an arm 19 and an eccentric cam 20, the system of beams is brought into a transverse horizontal move-ment, which is reduced towards the trailing end. The movement may be synchronized and either of opposite direction or of the same direction relative the hori-zontal component of the movement of the mandrels 3.
The invention is not restricted to ,the above embodiments onl~, but it may show variation in many ways within the scope of the patent claims. The move-mec of the compacting board 5 may be synchronized with the movement of the mandrels 3, being either of the same direction or of opposite direction. The movements may also have a certain other phase angle.
The frequency of the movement of the compacting board 5 may also differ from the frequency of the movement of the mandrels 3. This is accomplished by selecting the speeds of rotation of the eccentric cams appropriately.
Besides being an eccentric movement produced by means of a ball joint or equivalent placed at the trailing end, the movement of the mandrels 3 may also be a movement taking place relative a vertical or l~U~i2~
horizontal shaft placed at the trailing end.
In stead of using an eccentric cam, it is also possible to use, e.g., a hydraulic cylinder for displacing the upper board.
The groo~e formers 30 may also be used in the devices of the other embodiments, besides that shown in Figures 2 and 3.
Claims (12)
1. A method of casting a concrete product by means of continuous slide-casting in which the concrete mix is subjected to pressure by means of spiral screw means, the concrete mix is compacted by forcible displacement of one or more longitudinal walls and one or more cavities are formed in the product by means of one or more forming members provided between the walls with a top wall of the longitudinal walls being positioned above the one or more forming members; method wherein each forming member has a longitudinal axis and is moved to alter the angle of said longitudinal axis in relation to a predetermined articulation point, and wherein the concrete mix is compacted by said top wall being repeatedly forcibly displaced along a predetermined path of movement.
2. A method as claimed in claim 1, wherein said top wall is pivotably connected to a horizontal shaft positioned at the trailing end of said top wall.
3. A method as claimed in claim 1, wherein said top wall is pivotably connected to a vertical shaft positioned at the trailing end of said top wall.
4. A method as claimed in claim 1, wherein said top wall is displaced in the horizontal direction by means of an eccentric cam revolving around a vertical shaft.
5. A method as claimed in claim 1, wherein a front end of said top wall is displaced along a path of movement that moves around a longitudinal axis of the top wall.
6. A device for the casting of a concrete product by means of continuous slide-casting, said device comprising a plurality of longitudinal walls including a top wall, means fo forcibly displacing at least one of the walls to compact the concrete mix, spiral screw means for feeding the concrete mix, and one or more forming members provided between the walls, for forming cavities in the concrete product, with the top wall being positioned above the forming members; device wherein each forming member has a longitudinal axis and is movable to alter the angle of said longitudinal axis in relation to a predetermined articulation point; and wherein a displacement means is arranged to drive said top wall repeatedly along a predetermined path of movement.
7. A device as claimed in claim 6, wherein said top wall is pivotably connected to a horizontal shaft positioned at the trailing end of said top wall.
8. A device as claimed in claim 6, wherein said top wall is pivotably connected to a vertical shaft positioned at the trailing end of said top wall.
9. A device as claimed in claim 8, wherein said top wall is divided transversely into two or more parts which are interconnected by means of two or more longitudinal beams, said longitudinal beams having trailing ends and said longitudinal beams being pivotably connected at said trailing ends to respective vertical shafts.
10. A device as claimed in claim 6, wherein said top wall is supported by one or more vertical shafts so as to be movable in a horizontal direction.
11. A device as claimed in claim 6, wherein a front end of the top wall is displaceable along a path of movement that moves around a longitudinal axis of the top wall.
12. A device as claimed in claims 6, 9 or 11, wherein side walls are provided with means for forming grooves in the sides of the concrete product, said means for forming the grooves being displaceable along with said top wall.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI844389 | 1984-11-08 | ||
| FI844389A FI74649C (en) | 1984-11-08 | 1984-11-08 | Method and apparatus for casting concrete products. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1270624A true CA1270624A (en) | 1990-06-26 |
Family
ID=8519863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000494831A Expired - Lifetime CA1270624A (en) | 1984-11-08 | 1985-11-07 | Method and device for the casting of concrete products |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP0192884B1 (en) |
| JP (1) | JPH0790533B2 (en) |
| AT (1) | ATE49917T1 (en) |
| AU (1) | AU582798B2 (en) |
| CA (1) | CA1270624A (en) |
| CS (1) | CS277404B6 (en) |
| DD (1) | DD241711A5 (en) |
| DE (1) | DE3575693D1 (en) |
| DK (1) | DK166908B1 (en) |
| FI (1) | FI74649C (en) |
| NO (1) | NO165385C (en) |
| NZ (1) | NZ214117A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5238374A (en) * | 1991-02-11 | 1993-08-24 | Ultra Span, A Division Of Alphair Ventilating Systems, Inc. | Apparatus for controlling density profile in a concrete extruded slab |
| JPH08403B2 (en) * | 1991-12-17 | 1996-01-10 | 茂 小林 | Method and device for manufacturing concrete panel by continuous rolling |
| FI110174B (en) * | 1994-04-07 | 2002-12-13 | Valkeakoski Extec Oy Ltd | A device for producing a concrete product |
| US6331069B1 (en) | 1998-01-14 | 2001-12-18 | George Putti | Concrete extrusion machine and spiral conveyor therefor |
| FI126200B (en) | 2015-01-27 | 2016-08-15 | Elematic Oyj | Method and equipment for casting concrete products |
| CN105128129B (en) * | 2015-08-23 | 2017-07-21 | 玉溪怡达新型建材有限公司 | Light hollow wall plate vibration shaping device |
| CN113119298B (en) * | 2021-04-21 | 2022-12-13 | 英索来欣(盐城)新材料科技有限公司 | Machine for fully automatically manufacturing hollow slab |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1584509C3 (en) * | 1965-11-20 | 1975-02-06 | Insec Institution Europeenne De Credit Trust, Vaduz | Process for the production of building panels from lightweight concrete |
| GB1454050A (en) * | 1974-02-11 | 1976-10-27 | Spiroll Corp Ltd | Pile extruder |
| FI70821C (en) * | 1983-05-09 | 1986-10-27 | Partek Ab | FOER FAR SHEET FOR GLID GUTTING MACHINE AV HAOLPLATTOR AVETONG |
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1984
- 1984-11-08 FI FI844389A patent/FI74649C/en active IP Right Grant
-
1985
- 1985-11-04 DE DE8585308002T patent/DE3575693D1/en not_active Expired - Lifetime
- 1985-11-04 EP EP85308002A patent/EP0192884B1/en not_active Expired - Lifetime
- 1985-11-04 AT AT85308002T patent/ATE49917T1/en not_active IP Right Cessation
- 1985-11-05 NO NO854395A patent/NO165385C/en not_active IP Right Cessation
- 1985-11-06 DD DD85282543A patent/DD241711A5/en not_active IP Right Cessation
- 1985-11-06 CS CS857988A patent/CS277404B6/en not_active IP Right Cessation
- 1985-11-07 CA CA000494831A patent/CA1270624A/en not_active Expired - Lifetime
- 1985-11-07 AU AU49457/85A patent/AU582798B2/en not_active Expired
- 1985-11-07 DK DK513285A patent/DK166908B1/en not_active IP Right Cessation
- 1985-11-08 NZ NZ214117A patent/NZ214117A/en unknown
- 1985-11-08 JP JP60250580A patent/JPH0790533B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FI74649B (en) | 1987-11-30 |
| JPH0790533B2 (en) | 1995-10-04 |
| EP0192884A1 (en) | 1986-09-03 |
| NO165385B (en) | 1990-10-29 |
| FI844389A0 (en) | 1984-11-08 |
| JPS61120709A (en) | 1986-06-07 |
| CS798885A3 (en) | 1992-08-12 |
| AU582798B2 (en) | 1989-04-13 |
| DK166908B1 (en) | 1993-08-02 |
| DE3575693D1 (en) | 1990-03-08 |
| AU4945785A (en) | 1986-05-15 |
| DD241711A5 (en) | 1986-12-24 |
| EP0192884B1 (en) | 1990-01-31 |
| ATE49917T1 (en) | 1990-02-15 |
| NO165385C (en) | 1991-02-06 |
| FI844389L (en) | 1986-05-09 |
| NO854395L (en) | 1986-05-09 |
| DK513285D0 (en) | 1985-11-07 |
| FI74649C (en) | 1988-03-10 |
| DK513285A (en) | 1986-05-09 |
| CS277404B6 (en) | 1993-03-17 |
| NZ214117A (en) | 1989-03-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |