US3720493A - Machine for the manufacture of reinforced concrete or prestressed concrete elements - Google Patents
Machine for the manufacture of reinforced concrete or prestressed concrete elements Download PDFInfo
- Publication number
- US3720493A US3720493A US00056918A US5691870A US3720493A US 3720493 A US3720493 A US 3720493A US 00056918 A US00056918 A US 00056918A US 5691870 A US5691870 A US 5691870A US 3720493 A US3720493 A US 3720493A
- Authority
- US
- United States
- Prior art keywords
- molds
- installations
- assembly
- concrete
- rotation
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- 239000011150 reinforced concrete Substances 0.000 title claims description 11
- 239000011513 prestressed concrete Substances 0.000 title description 8
- 238000009434 installation Methods 0.000 claims abstract description 65
- 239000004567 concrete Substances 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims description 12
- 210000000078 claw Anatomy 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 238000007669 thermal treatment Methods 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 241000282485 Vulpes vulpes Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping
- B28B5/10—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping in moulds carried on the circumference of a rotating drum
Definitions
- PATENTEUMH 31975 SHEET 2 UF 8 mdE PATENTEDHARI 31973 3 720,493
- the present invention relates to a machine or aggregate for the manufacture of elements of reinforced concrete or of prestressed concrete, as for example: posts, stakes, ribs, beams, small girders, planks, crossbars, slabs, fence parts, etc
- Another aggregate constructed in USSR, possesses a conveyor belt formed by the bottom of the molds, which belt is moved also in two superposed horizontal planes, by means of a gearing system with fly-wheels.
- the concreting is effected in continuous movement by an installation composed of a fixed hopper, of vibrating rollers and of a vibrolevelling plate.
- the heat treatment of the concrete is carried out with electrical radiators which heat the belt from below, by passing into a tunnel provided with an installation which protects the free surface of the concrete.
- the machine, or aggregate, according to the invention enables these drawbacks to be avoided and it is characterized by the fact that it comprises means adapted to displace the molds, in a manufacturing cycle, by rotation, stepwise or continuously, around a horizontal axis, and installations for cleaning the molds, oiling the molds, assembly of cores in the molds, concreting, heat treatment of the concrete contained in the molds, demolding and removal of the finished elements of concrete, which installations are distributed outside and in the vicinity of the path followed by the molds, so that the latter pass successively, in the course of their rotation, at right angles to the said installations, the operation of the latter being synchronized with the rotation of the assembly of the molds so that, on each complete rotation of a mold, a complete cycle of manufacture is achieved.
- a rotary support body which transports the molds, mounted on its outer surface, before the work stations, synchronized with the rotation, in continuous or stepwise movement, of the body-mold assembly.
- the aggregate may be produced according to several variations of the general technological flow which depend essentially on the sort of rotation of the body and of the place where the processes of heat treatment and of concreting are carried out.
- aggregates of type I are used with molds attached on the body around a polygonal contour. These aggregates differ essentially in respect of the place of execution of the concreting: on the body itself or outside the latter.
- the separation of the concreting outside the body can be shown to be advantageous when the method is applied to the manufacture of heavier elements.
- the molds are detachable with respect to the body, assembled in rigid batteries, to facilitate their handling at the concreting station.
- For the rotation of the body-mold assembly in continuous movement use is made of aggregates of type II, with molds fixed on the body around a circular contour.
- FIG. 1 is a transverse section of an aggregate of type I for the manufacture of posts or of stakes of prestressed concrete;
- FIG. 2 is a lateral view of the aggregate of type I
- FIG. 3 is a longitudinal section of the concreting installation of the aggregate of type I;
- FIG. 4 is a transverse section of an aggregate of type II for the manufacture of small linear elements of reinforced concrete
- FIG. 5 is a lateral view of the aggregate of type II
- FIG. 6 is a perspective view of the concreting installation of the aggregate of type II
- FIG. 7 is a perspective view of the installation for heat treatment of the aggregate of type II.
- FIG. 8 lastly, is a diagram of the demolding installation of the aggregate of type II.
- the aggregate comprises a rotary support body which moves the molds 1 through the manufacturing cycle and installations for cleaning the molds N, oiling the molds H, assembly of the cores in the molds A, concreting B, heat treatment of the concrete contained in the molds T, demolding D, removal E of the finished elements of concrete, mounted all around the body and having their operation synchronized with the rotation of the body-mold assembly so that at each rotation of the latter, executed in continuous or stepwise movement, the formation of the elements 2 is obtained, and their total or partial hardening.
- the body for supporting and for rotating the molds can be constructed according to several techniques. Its structure must be rigid, capable of supporting the forces which result from its own weight, the weight of the molds and of the concrete as well as the forces transmitted by the various installations. To this end, there is used for the structure of the body welded pipe sections 3, rigidified transversely by rings 4, and longitudinally by sectional members 5. The diameter and the length of the body are selected, as far as possible, of
- the support of the body-mold assembly is effected by means of rollers 6, either inside or preferably outside, according to several structural solutions.
- rollers 6 either inside or preferably outside, according to several structural solutions.
- two diaphragms or drums 9 arranged, in planes at right angles to the axis of the envelope formed by the rings 3, at the axial ends of the said envelope.
- the drums are reinforced by gussets l and connected to a tubular beam 11, provided with two collars 12, (FIGS. 1 and 2).
- the rotation of the body-mold assembly is effected by the usual devices 13, the speed and the meshing force being in all cases particularly reduced, because, on one hand, the rotation is effected on rollers and, on the other hand, the molds are loaded only on the descending portion.
- the rotation of the body-mold assembly can be effected, in certain cases, only by the eccentric loading of the concrete itself.
- the molds are assembled in groups or batteries, by welding by means of transverse and longitudinal metallic sectional members according to several structural solutions.
- the batteries will be constructed particularly rigidly when they have to sustain forces for the tensioning of the threads or strands.
- the assembly of the batteries on the rotary body is effected as a function of the type of aggregate.
- the batteries are fixed on the body, close to one another, around a circular contour, by means of elastic supports.
- the batteries are mounted on the body, along a polygonal contour, either fixed or movable.
- the cleaning and oiling of the molds is done in a zone where they are inclined above the horizontal plane passing through the axis around which the molds turn, to facilitate the flow of the mixtures used.
- the respective installations are of a special model with jet devices 14, gutters l5, protective hoods 16, air systems 17, and displacement devices 18.
- the jet devices take up the mixtures from the gutters and direct them under pressure on the molds.
- the excess of the mixtures employed (water with sand for cleaning and oil for oiling) is recovered in the same gutter.
- the gutters are fixed and the rest of the installation movable (FIG. whilst for the aggregate of type I, the whole installation is movable (FIG. 2).
- the assembly of the cores is effected differently according as the elements are of reinforced concrete or of prestressed concrete.
- the assembly of cores in a skeleton which can be assembled by conventional means or by containers 20.
- FIGS. 1 and 2 In the case of the manufacture of elements of prestressed concrete, use is made, according to FIGS. 1 and 2, of a positioning installation and of a tensioning installation of the usual type with a press or jack 21, and a hydraulic pump 22.
- the installation for positioning the threads or strands 23, of the passive or feed head of the battery or group of molds 24, includes four circuits, one for each mold, provided with spools 25,
- the concreting is effected in the upper part, according to the method of rotation of the body-mold assembly. If the rotation is effected continuously, the installation illustrated in FIG. 6 is used, which includes a hopper 32, with a discharging opening which embraces several molds, curved plates 33, having folded back ends 34, vibrators 35, elastic means such as springs 36, sliding parts 37, and a fixing beam 38.
- the plates 33 are mounted in front of the vertical plane passing through the axis around which the molds rotate, just at the side of the hopper, whilst entering the latter slightly, and pressing above the molds so that, by rotation of the latter, which triggers automatically the operation of the vibrators, the filling, the flattening and the finishing of the concrete are ensured.
- a movable distributor hopper 39 adapted to be moved in the longitudinal direction of the molds, a vibro-finishing plate, vibrating means 40, and a lowering-raising device for the battery 41.
- the vibro-finishing plate includes a front pusher end 42, two guide wings for the concrete 43, several vibrators 35 and several springs 36.
- Heat treatment of concrete is effected by heating by means of a hot fluid, especially steam, by means of an installation which includes: movable heating chambers 44, a hot fluid distributing device and a device for the protection of the free surface of the concrete to prevent the evaporation of water from the concrete.
- the movable chambers 44 are formed between the easing 3 of the body and the bottom of the molds l, by their assembly possibly with the aid of several elastic parts.
- the hot fluid distributing device is formed by a conventional steam system 45, and semi-circular distributors in the form of pipes 46, provided with connecting sleeves 47 and having lateral orifices, which pipes are positioned on roller members 48, in a position fixed on the outside and at the middle, in the longitudinal direction of the body, between the movable chambers (FIG. 7).
- the chambers arrive facing the distributors where they receive automatically steam over the whole zone provided.
- the free surface of the concrete is protected by a flexible or hinged band 49, which rolls over cylinders 50, driven by its friction with the concrete contained in the molds.
- This band 49 enables a shock thermal treatment to be used.
- the demolding of the elements is a function of their shape whether or not provided with transverse release (slope), or longitudinal or both. It is recommended to make use of mold-shells of which the demolding can be effected by forced expulsion.
- FIG. 8 Such an installation is illustrated in FIG. 8 for the aggregate for the manufacture of small elements of reinforced concrete.
- a longitudinal axle 51 parallel to the longitudinal direction of the molds, is mounted in bearings 52.
- the axle 51 is provided with claws 53 extending radially towards the molds 1.
- a jack 54 particularly double-acting pneumatic, is adapted to actuate the longitudinal displacements of the axle 51 so that the claws push the elements and move them a little forward so ensuring their fall.
- the path of the axle is controlled by the rotation of the body itself, by means of an installation which includes: a system 17 for the supply of the jack 54 with fluid, an electricail system 55, two electrovalves 56, two contactors 57, and two series of cams 58, fixed internally all around the body.
- the cams 58 close the contactors 57 and actuate a longitudinal movement of the axle 51 causing the claws 53, to slide between the elements and there molds and so to expel the elements 2 from their molds 1.
- the expulsion is effected from the inside by an installation adapted to this purpose.
- the demolding of prestressed concrete elements is facilitated by the fact that the transfer of force to the concrete ensures, in certain cases, the rupture of adhesion; thus the elements can fall from the molds which, according to the invention, arrive for demolding completely inverted.
- the removal of the elements is done by known means: roller belts 59, carriages etc
- the removal belt is placed in a heating tunnel 60 (FIG. 4), constructed underground or elevated,
- the removal by I belt can be coupled in certain cases, with an installation for placing in containers.
- the installations described are connected to a central control and monitoring panel 61 (FIG. 5). They are mounted on metallic structures 62, which also support the platforms, the ladders and possibly the roofing.
- the aggregate according to the invention can be used for the manufacture, with a high economic efficiency, of reinforced and prestressed concrete elements such as: posts, stakes, ribs, beams, small girders, planks, cross-bars, slabs, fence parts, etc Relative to other known methods, it brings:
- Machine for the manufacture in molds of 5 prestressed reinforced concrete elements comprising an assembly of molds, advancing means for moving an assembly of the molds on a casing in a manufacturing cycle by rotation through a path around a horizontal axis, and a series of installations which include means for performing successive manufacturing steps distributed externally and close to said path, so that the molds pass in the vicinity of said installations, in combination with means for mounting cores in the molds, said core mounting means comprising a plurality of strand advancing means stoppable automatically at the end where the strands emerge from the molds, and jacks triggered by said stopping, causing the locking of the strands rigidly in position, and synchronizing means for controlling the operation of said installations with the rotation of the assembly of molds so that, on each complete rotation of a mold, a complete manufacturing cycle is achieved.
- said advancing means comprise a body formed of said casing which is of polygonal section, rigidified by rings and longitudinal beams which serve also for the guidance of the molds, diaphragms arranged in planes at right angles to the axis of the casing, at the axial ends of the latter, and reinforced by gussets, the body being supported by tubular beams provided with two supporting collars arranged to roll on outer rollers.
- the advancing means includes means for moving the assembly in continuous rotation and one of said installations is a concreting installation which comprises a fixed hopper which embraces several molds, arranged above the assembly in front of the vertical plane passing through the longitudinal axis of the assembly, at least one curved plate mounted tangentially to the molds, and elastic means arranged to apply said plate against the molds so that, by rotation of the assembly, filling of the molds with concrete and flattening and the dressing of the concrete are effected automatically.
- a concreting installation which comprises a fixed hopper which embraces several molds, arranged above the assembly in front of the vertical plane passing through the longitudinal axis of the assembly, at least one curved plate mounted tangentially to the molds, and elastic means arranged to apply said plate against the molds so that, by rotation of the assembly, filling of the molds with concrete and flattening and the dressing of the concrete are effected automatically.
- the advancing means including means for moving the molds stepwise and one of said installations is a concreting installation which comprises a movable distributor hopper, movable in the longitudinal direction of the molds, coupled with a vibro-finished plate which includes a front thrust end and two guide wings for the concrete, vibrators and elastic pressure means for urging the plate onto the molds.
- one of said installations is a thermal treatment installation which is provided with semi-circular distributor pipes, connected by sleeves to pipes leading from a hot fluid supply system, said semi-circular distributors being provided with lateral orifices and positioned on roller members in a position fixed outside and in the middle, in the longitudinal direction, of the assembly, so as to direct the hot fluid automatically towards movable chambers which are formed between the casing of the assembly and the bottom of the molds, in the whole of the zone where said chambers pass opposite the lateral orifices of the semi-circular distributors.
- one of said installations is a heat treatment zone, and comprising at least one flexible band arranged to roll, in a closed path, on rollers, said band being driven by friction with concrete contained in the molds so as to insulate the concrete from the exterior, in sealed manner, over the whole of the heat treatment zone, whereby evaporation of water from the concrete is prevented.
- one of said installations is a demolding installation which includes a longitudinal axle, mounted in bearings parallel to the longitudinal direction of the molds, and provided with claws extending radially towards the molds, a doulbeacting jack controlling longitudinal movements of the axle, a jack fluid supply system, electro valves controlling the admission and escape of fluid in the jack, an electrical control system for the electro-valves, contractors actuating the electric system and earns fixed internally all around the assembly so that at the moment when the elements arrive facing the claws, the contractors are closed by the cams and actuate a longitudinal movement of the axle and sliding insertion of the claws behind the elements so as to release them from their molds.
- demolding installation which includes a longitudinal axle, mounted in bearings parallel to the longitudinal direction of the molds, and provided with claws extending radially towards the molds, a doulbeacting jack controlling longitudinal movements of the axle, a jack fluid supply system, electro valves controlling the admission and escape of fluid in the jack, an electrical control system for the
- one of said installations is a demolding installation which is in the vicinity of the low-point of said path and the molds are presented completely inverted so as to face said demolding installation, whereby gravity facilitates the demolding.
- said installations include cleaning and oiling installations which are located, in the direction of rotation of the molds, after the low-point of said path in a zone where the molds are again inverted and turned downward so as to enable the recovery, by gravity, of the cleaning and oiling materials used.
- one of said installations is a heat treatment zone, and comprising at least one flexible endless band rolling on cylinders, said band being driven by friction with concrete contained in the molds, and insulating the concrete from the exterior, in sealed manner, over the whole of the heat treatment zone, so that the evaporation of water from the concrete is prevented.
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)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR6925511A FR2060445A5 (es) | 1969-07-25 | 1969-07-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3720493A true US3720493A (en) | 1973-03-13 |
Family
ID=9038070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00056918A Expired - Lifetime US3720493A (en) | 1969-07-25 | 1970-07-21 | Machine for the manufacture of reinforced concrete or prestressed concrete elements |
Country Status (8)
Country | Link |
---|---|
US (1) | US3720493A (es) |
BE (1) | BE752232A (es) |
CA (1) | CA934526A (es) |
CH (1) | CH529620A (es) |
DE (1) | DE2036350A1 (es) |
ES (1) | ES382007A1 (es) |
FR (1) | FR2060445A5 (es) |
NL (1) | NL7011105A (es) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4061454A (en) * | 1975-03-27 | 1977-12-06 | Mircea Borcoman | Factory-type apparatus for producing prestressed concrete products |
EP0012069A1 (fr) * | 1978-11-22 | 1980-06-11 | Mircéa Borcoman | Usine à tambour rotatif pour la fabrication de produits en béton, béton armé et/ou béton précontraint |
US4836969A (en) * | 1987-04-30 | 1989-06-06 | Cemtech Laboratories Inc. | Method of casting a structure from cementitious |
US5728327A (en) * | 1992-01-08 | 1998-03-17 | Borcoman; Mirce A | Method, barrel subunits and units, service installations and assembly structures for the fabrication of moldable products, particularly based on concrete |
US20020180076A1 (en) * | 2001-05-31 | 2002-12-05 | Motz James G. | Method and apparatus for forming a flexible mat defined by interconnected concrete panels |
US20070152376A1 (en) * | 2005-12-30 | 2007-07-05 | Verhoff Jonathan M | Apparatus for demolding building products from a mold |
WO2017143029A1 (en) * | 2016-02-19 | 2017-08-24 | Motz James G | Flexible mat forming system |
ITUA20164748A1 (it) * | 2016-06-29 | 2017-12-29 | Maccaferri Off Spa | Macchinario, impianto e procedimento per la realizzazione di pietre artificiali |
ITUA20164750A1 (it) * | 2016-06-29 | 2017-12-29 | Maccaferri Off Spa | Macchinario, impianto e procedimento per la realizzazione di pietre artificiali |
WO2018002807A1 (en) * | 2016-06-29 | 2018-01-04 | Officine Maccaferri S.P.A. | Machinery, plant and process for producing artificial stones |
US11097446B2 (en) | 2019-06-13 | 2021-08-24 | Motz Enterprises, Inc. | System and method for making tied block mat with border |
US11198231B2 (en) | 2016-02-19 | 2021-12-14 | Motz Enterprises, Inc. | Process and system for making an erosion control mat |
US11345065B2 (en) | 2016-02-19 | 2022-05-31 | Motz Enterprises, Inc. | Flexible mat forming system and method |
USRE49482E1 (en) | 2016-03-23 | 2023-04-04 | Motz Enterprises, Inc. | Erosion-preventing laminate mat and assembly system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111438864B (zh) * | 2020-04-02 | 2021-02-05 | 常州市新创智能科技有限公司 | 一种工型长桁自动化脱模系统 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US383174A (en) * | 1888-05-22 | Machine for the manufacture of chalk | ||
US810193A (en) * | 1904-06-04 | 1906-01-16 | Felix Daum | Soap-molding machine. |
GB234144A (en) * | 1923-11-23 | 1925-05-25 | Martin William Harvey | Improvements in machines for moulding concrete lintels or concrete fence posts and for moulding plastic substances generally |
US2859669A (en) * | 1955-11-18 | 1958-11-11 | Pacific Pulp Molding Company | Pulp molding apparatus |
US3305907A (en) * | 1964-02-11 | 1967-02-28 | American Concrete Crosstie Co | Machine for making prestressed concrete members |
US3360828A (en) * | 1964-10-10 | 1968-01-02 | Behrens Heinz | Apparatus for applying packings to pipes |
US3477108A (en) * | 1966-05-11 | 1969-11-11 | John F Stokes | House prefabricating machine |
-
1969
- 1969-07-25 FR FR6925511A patent/FR2060445A5/fr not_active Expired
-
1970
- 1970-06-19 BE BE752232D patent/BE752232A/xx not_active IP Right Cessation
- 1970-07-20 CH CH1098770A patent/CH529620A/fr not_active IP Right Cessation
- 1970-07-21 ES ES70382007A patent/ES382007A1/es not_active Expired
- 1970-07-21 US US00056918A patent/US3720493A/en not_active Expired - Lifetime
- 1970-07-22 DE DE19702036350 patent/DE2036350A1/de active Pending
- 1970-07-24 CA CA089072A patent/CA934526A/en not_active Expired
- 1970-07-27 NL NL7011105A patent/NL7011105A/xx unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US383174A (en) * | 1888-05-22 | Machine for the manufacture of chalk | ||
US810193A (en) * | 1904-06-04 | 1906-01-16 | Felix Daum | Soap-molding machine. |
GB234144A (en) * | 1923-11-23 | 1925-05-25 | Martin William Harvey | Improvements in machines for moulding concrete lintels or concrete fence posts and for moulding plastic substances generally |
US2859669A (en) * | 1955-11-18 | 1958-11-11 | Pacific Pulp Molding Company | Pulp molding apparatus |
US3305907A (en) * | 1964-02-11 | 1967-02-28 | American Concrete Crosstie Co | Machine for making prestressed concrete members |
US3360828A (en) * | 1964-10-10 | 1968-01-02 | Behrens Heinz | Apparatus for applying packings to pipes |
US3477108A (en) * | 1966-05-11 | 1969-11-11 | John F Stokes | House prefabricating machine |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4061454A (en) * | 1975-03-27 | 1977-12-06 | Mircea Borcoman | Factory-type apparatus for producing prestressed concrete products |
EP0012069A1 (fr) * | 1978-11-22 | 1980-06-11 | Mircéa Borcoman | Usine à tambour rotatif pour la fabrication de produits en béton, béton armé et/ou béton précontraint |
US4290740A (en) * | 1978-11-22 | 1981-09-22 | Mircea Borcoman | Rotary drum plant for the manufacture of concrete, reinforced concrete and/or prestressed concrete products |
US4836969A (en) * | 1987-04-30 | 1989-06-06 | Cemtech Laboratories Inc. | Method of casting a structure from cementitious |
US5728327A (en) * | 1992-01-08 | 1998-03-17 | Borcoman; Mirce A | Method, barrel subunits and units, service installations and assembly structures for the fabrication of moldable products, particularly based on concrete |
US20020180076A1 (en) * | 2001-05-31 | 2002-12-05 | Motz James G. | Method and apparatus for forming a flexible mat defined by interconnected concrete panels |
US6793858B2 (en) * | 2001-05-31 | 2004-09-21 | James G. Motz | Method and apparatus for forming a flexible mat defined by interconnected concrete panels |
US20070152376A1 (en) * | 2005-12-30 | 2007-07-05 | Verhoff Jonathan M | Apparatus for demolding building products from a mold |
US7841852B2 (en) * | 2005-12-30 | 2010-11-30 | Owens-Corning Fiberglas Technology, Inc. | Apparatus for demolding building products from a mold |
US20110074066A1 (en) * | 2005-12-30 | 2011-03-31 | Verhoff Jonathan M | Methods of demolding building products from a mold |
WO2017143029A1 (en) * | 2016-02-19 | 2017-08-24 | Motz James G | Flexible mat forming system |
US10239240B2 (en) | 2016-02-19 | 2019-03-26 | Motz Enterprises, Inc. | Flexible mat forming system |
US10814528B2 (en) | 2016-02-19 | 2020-10-27 | Motz Enterprises, Inc. | Flexible mat forming system and method |
US11198231B2 (en) | 2016-02-19 | 2021-12-14 | Motz Enterprises, Inc. | Process and system for making an erosion control mat |
US11345065B2 (en) | 2016-02-19 | 2022-05-31 | Motz Enterprises, Inc. | Flexible mat forming system and method |
US11565446B2 (en) | 2016-02-19 | 2023-01-31 | Motz Enterprises, Inc. | Hopper for a flexible mat forming system |
USRE49482E1 (en) | 2016-03-23 | 2023-04-04 | Motz Enterprises, Inc. | Erosion-preventing laminate mat and assembly system |
ITUA20164748A1 (it) * | 2016-06-29 | 2017-12-29 | Maccaferri Off Spa | Macchinario, impianto e procedimento per la realizzazione di pietre artificiali |
ITUA20164750A1 (it) * | 2016-06-29 | 2017-12-29 | Maccaferri Off Spa | Macchinario, impianto e procedimento per la realizzazione di pietre artificiali |
WO2018002807A1 (en) * | 2016-06-29 | 2018-01-04 | Officine Maccaferri S.P.A. | Machinery, plant and process for producing artificial stones |
CN109476038A (zh) * | 2016-06-29 | 2019-03-15 | 奥菲奇内·马卡费里股份公司 | 用于生产人造石的机械、设备以及工艺 |
US11097446B2 (en) | 2019-06-13 | 2021-08-24 | Motz Enterprises, Inc. | System and method for making tied block mat with border |
Also Published As
Publication number | Publication date |
---|---|
DE2036350A1 (de) | 1971-02-25 |
ES382007A1 (es) | 1972-10-16 |
FR2060445A5 (es) | 1971-06-18 |
NL7011105A (es) | 1971-01-27 |
BE752232A (fr) | 1970-12-21 |
CH529620A (fr) | 1972-10-31 |
CA934526A (en) | 1973-10-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3720493A (en) | Machine for the manufacture of reinforced concrete or prestressed concrete elements | |
US4784821A (en) | Method for manufacturing a building block imitating a pile of dry stones | |
US4421710A (en) | Method, devices, mold bearing structures and installations for improving the efficiency of processes for the manufacture of prestressed concrete products | |
CN102744779B (zh) | Phc管桩流水传送生产线 | |
GB1579544A (en) | Manufacture of construction blocks | |
CN1984758A (zh) | 用于制造具有装饰面的复层建筑用砖块的工艺路线 | |
US3055073A (en) | Method and apparatus for the continuous production of prestressed concrete members | |
US2394227A (en) | Production of prestressed reinforced concrete units | |
US4067676A (en) | Apparatus for extruding reinforced concrete | |
US3732044A (en) | Production line for products of prestressed concrete or of reinforced concrete | |
FR2400085A1 (fr) | Procede de realisation sur place et par sections d'une dalle en beton et dispositifs pour la mise en oeuvre du procede | |
US1751147A (en) | Method of lining tunnels with concrete and apparatus therefor | |
US4061454A (en) | Factory-type apparatus for producing prestressed concrete products | |
US2569231A (en) | Apparatus for molding prestressed reinforced concrete elements | |
US3926541A (en) | Extruder with interacting auger and care means | |
US4171194A (en) | Plant for the production of concrete elements | |
US3407457A (en) | Plant for the manufacture of aerated concrete | |
US3734661A (en) | Apparatus for the continuous manufacturing of construction panels | |
CN214981873U (zh) | 一种轻质隔墙板生产用立式模具机 | |
US3250835A (en) | Method for producing concrete and reinforced concrete slabs and substantially flat structural elements | |
US4023769A (en) | Molding means having opposed core assemblies | |
US3139663A (en) | Concrete casting machine | |
JPS5830126B2 (ja) | 鉄筋コンクリ−ト・パイプ製造プラント | |
US4439131A (en) | Apparatus for producing concrete elements of high dimensional accuracy | |
CN110900813A (zh) | 预制轨枕自动生产系统 |