CA2184464A1 - Mold for the production of shaped bricks - Google Patents
Mold for the production of shaped bricksInfo
- Publication number
- CA2184464A1 CA2184464A1 CA 2184464 CA2184464A CA2184464A1 CA 2184464 A1 CA2184464 A1 CA 2184464A1 CA 2184464 CA2184464 CA 2184464 CA 2184464 A CA2184464 A CA 2184464A CA 2184464 A1 CA2184464 A1 CA 2184464A1
- Authority
- CA
- Canada
- Prior art keywords
- mold
- side wall
- inclined side
- side walls
- upwardly
- 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.)
- Abandoned
Links
- 239000011449 brick Substances 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000000465 moulding Methods 0.000 description 5
- 239000011456 concrete brick Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 241000357437 Mola Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241001052209 Cylinder Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Moulds, Cores, Or Mandrels (AREA)
Abstract
A mold, for the production of concrete shaped bricks having one or more inclined side walls, has an inclined side wall which together with the opposed vertical mold side wall diverges upwardly to form an angle that is opened upwardly, the inclined side wall is moved upwardly in the direction of inclination in order to open the mold and to enable the shaped bricks to be removed from the mold. The movement of the inclined side wall along the inclined space of the shaped brick during removal of the mold results in a smooth clean even surface.
Description
MOLD FOR THE
PRODUCTION OF SHAPED BRICKS
Field of thè Invention The present invention relates to a mold for the producion of sfi.aped 6ri~cRs formed from free-flowing concrete or concrete-like material, more particularly, to such a mold having one or more mold cavities defined 6y vertical side walls and in each cavity a mold wall ls i:nc`lined with respect to the opposite mold wall in that cavity to aefine an angle wfiich opens upwardly.
Background of the Invention In the production of concrete shaped bricks in molds having straight, vertical side walls, the mold is generally moved upwardly ~i~th respect to the concrete brick in order to remove the finished concrete ~ri~cR from the mold. During this movement7 the vertical si;de walls of the~mola move along the outer sides of the concrete -brick to produce a smooth surface which imparts a pleasing appearance to the concrete bri~ck and prevents shrinkage and irregularities from developing on the outer sides of the concrete brick during removal of the bricR from the mold. However, it is not possible with such ~,mold and ~ith this known production process to produce shaped bri-cks having a side wall that is inclined to the vertical, such a~, for example, stai~rs or steps.
It has also 6een Rnown to produce concrete shaped blocks ~it6 s;ide walls that di~er~e upwardly by using manually or ~echanicall~ operatea tipping molds. ~n such a case, the mold that is fi~lled wi~th concrete is pivoted 180 and the finished cQnc~ete shaped 610cR is placed on a steel base. In such a process, a good surface is achieved only on that si-de of the shaped block that rests: on the steel Base. The fi~nished surface of the inclined $ide is gene~all~ not particularly smooth. This process has a furth:e~ di:~sad~antage t6at i~t is expensi~ve, time consuming and enti~rely unsui~table for effi~cient production.
It has also been Rnown to move one or more side walls of the mold in the horizontal direction in order to remove the concrete blocR from the mold. When this i-s done~ however, a smooth and clean surface is not achi~eved since the concrete fills up on the si:de wall of tfie blocR from which the side wall of the mold has been mo~ed and 1~ not smoothed o~t.
~ummary of the Invention It is therefore the principal object of the present invention to provide a novel and improved mold for the production of shaped bri~cks which have at least one side thereof inclined.
rt is another o6ject of the present invention to provide such a mold ~hich ensures precise shaping and a clean smooth surface on all sur~aces of tfie fl~nished shaped bri~ck.
I-t is a further object of the present invention to providel a mold of simpli-fied construction which is inexpensive to maintain and is sui~ta61e for effi`cient production of shaped bricks each naving an inclined surface.
The objects ofthe present invention are achieved and the di~saa~antages of the pri-or art are eliminated by providing a mold i~n whi~ch incli-ned mold walls of the mold cavities can 6e moved upwardly individually or together in the direction in which they are inclined so as to move along the i-nclined surface of the shaped 6ri~cR a~ring tne ~emo~al of the brick from the mold.
Accordi~ng to one aspect of the present invention, a mold ,f~r the production of shaped brick has one or more mold cavities ~nd each mold cavity has a longitudinal vertical side wall, opposed end vertical side walls and an inclined longitudinal side wall.
The l~nclined longitudinal side wall diverges upwardly with respect to t~e ~pposed longi~tudinal side walls in a mold cavity so as to aefine an upwardly opening angle therewith. Means are further Provided for moving each of the inclined side walls upwardly in the direction in which each wall is inclined in!order to open the mold so that shaped brick can be removed. The inclined side wall thus ~oves both verti~cally and horizontally during opening of the mold.
A s1gnifi~cant advantage is ac`nieved from the mold ofthe present in~ention since the inclined mold wall is moved,along its direction of incli.nati~on w~en t~e mold i.~s 6ein~ opened to remove the brick there from ana thi~ movement shapes the inclined surface of the brick.
The obli~ue si~de ~all of the finished shaped brick thus receives a clean smootfi. surface si~ilar to the surfaces of the vertical side walls which are also smoothed out during removal of the mold from the brick because. of the vertical movement of the mold. In addition, self-cleanl~ng of th.e mold walls is achieved.
Brief Description of the Drawings Other objects and ad~antages of the present invention will be apparent upon reference of the accompanying description when taken i~n con.junction w~th t~e followi~ng drawings, which are exemplary, wherein;
Fig. l is a front elevational vi~ew of the molding machine incorporating tfie mold accordi~ng to the present in~ention and parti-ally cut awa~;
Fig. 2 is a view similar to that of Fig. l but showing the mold in its raised position after removal of the shaped bricks from the mold and also partially cut away;
Fig. 3 is a sectional view taken along the line III-III of Fig. 1, Fi-g~ 4 is a sectional view taken along the line IV-IV in Fi`g. 3, Fi~g. 5 is an enlarged view of detail A shown in Fig. 4;
Fig. 6 is an enldrged view of detail B shown in Fig. 3, and Fi~`g. 7 is a secti`onal view taken along the line VII-VII in Fi:9. 3 i`n enlarged scale.
Dè-scri~tidn-~of~the Preferred Embodiments Proceeding next to the drawi-ngs wherein like reference sym601s indicate the same parts throughout the various views a specifl'c em60di~ment and modi~fication of the present invention will be descri`bed in detail~
~ n Fig. 1, there is indicated generally at 2 a molding machine having amold 3 with several mold cavities 4 which is placed on a vi~6rati~ng ta61e 1. Upon completion of the molding ~rocess? the mold 3 i~s raised sufficient'iy to permi-t the insertion of a stora~e 60ard 5 on the vibrati-ng table 1. The mold 3 is Provi:ded wi~th lateral projection 6 whi`ch are detachably mounted tQ ~erti~cally-mova61e s-upport 7 on the molding machine 2. The moYa61e s,~port 7 can ~`e dri~en 6y pi~ston~cylinder units which a~e not i`llustratea.
A piston-cylin~er unit 8 mounted on the molding machine 2 drives pressure plates 9 which rest upon mold cavities 4 that are filled~with concrete compound and are vertically movable in a known manner. The pressure plates 9 correspond in number to the mold cavi~ties 4 so as to form the top walls for the respective mold cavities.
Tfie mola cavitl`es 4 are situated in a mold insert 10 whicn i:s securel~ connected to mold 3 6y a detachable gl~m~;n~ connection (Fi:~.. 3~. T~e mold ins~rt la compri-ses three mold cavities 4 in the. present em60di~ment. Each mold cavity 4 is formed by three ~ertical mold walls 11 w~ich consist of a longitudinal vertical mold wall, two end vertical mold walls and an oblique or inclined movable mold wall 12 whicfi forms with the opposing longitudinal mold wall 11 an angle th.at i~s open upwardly~ Thus, the inclined mold wall 12 di:verges upwardly from its opposed vertical longitudinal wall t As can be seen i~n Fi:~t 1, tfie inclined mold wall 12 is trapezoidal in cross section with an inner surface that is inclined and rests upon a similarly inclined control surface 13 on the edge of the pressure pl-ate 9.. ~n this em60diment, the inclination of the control surface 13 corresponds to the incli-nation of the mold wall 12t Using t~e oblique mold wall 12, a finished shaped brick will tfius recei~e tfi.e desi`red incline or slope on one face and thus, may be used, for example, as a stair.
The three incli-ned mold walls 12 of the three mold cavities 4 are each provi-ded with a support 14 whose ends extend outwardly through openings 15 in the end mold walls 11 and the ends of the support 14 on one si-de of the mold are connected to a piston rod 16 extending from a single~action nydraulic cylinder that is arranged laterall~ to tfie mold 3 ~Figs. 3 and 5~. The other ends of the support 14 are si~ilarly connected to a like piston rod and cylinder arranged`on tfie otfier side of the mold as again shown in Fig. 3.
Piston rod 16 i`s enclosed by spacers 18 and bearing bushes 19 whi~cfi are tig~tened against one another with a screw 20 at the end of t6e pi~ston ~od 16. Thus, bush bearing 19 is clamped respectively between a spacer 18 and support 14 whi`ch is penetrated by the piston rod 16 as can be seen in Fig. 5. Bush bearings 19 are movabl~ mounted in bearings 21 which are attached to the underside of a base plate 22 (Pi`gs. 4 and 6). in this manner, a unit which consi~sts of tfie three in dined mold walls 12 and s:upports 14 can fie mo~ed horizontally withi-n mold 3 together with piston roa 16 h~icfi are i~ntegrated into the mold 3.
~ n operation, the mold cavities 4 are first filled with a sui:tafile concrete compound, vi`brated and sealed in the position according to Fig. 1 by lowering the pressure plates 9.
- ~1 84464 After the filling and vibrating processes, the moid 3 is raised by the movable support 7 into the position shown in Fig. 2 so as to enable the finished shaped ~ricks to be removed from the mold. As t~e mold 3 moves vertically upward, the inclined inner surface of mold wall 12 wi~ll slide aiong control surface 13 of pressure plate 9. As a result, a fiorizontal movement of the inclined mold walls 12, supports 14, and piston rod 16 is produced since the single-action hydrauli~c cylinder 17 are not under pressure and the pistons are pushed back agal~nst the resi~stence of the hydraulic fluid that is free to flo~ out o~ the cyli~nder. Thus, a combined vertical and hori~zonlal movement i`s produced as a result of which the inclined mold wall 12 moves upwardly in the direction of its inclined surface.
Tfie movement o~ t~e i~nclined mold wall 12 against the corresponding inclined outer surface of the shaped brick will be molded and smoothed out. Depending on the position according to Fig. 2, the mold 3 together with pressure plates g can be moved further upwardly so that the finished shaped bricRs can be transporied away by removing the storage board 5 on w-hich they rest.
As a modificati~n,instead of control surface 13 on pressure plate 9? a linkage system positioned outside of the mold cavity 4 can also 6e used and this 1inkage will also produce a moYement of the inclined side walls 12 that is directed obli~quely upwardly by a simulated movement.
As a further modification, it is also possible to use as hydraulic cyli-nder 17 a cylinder that has a double action instead of a single action and to combine this cylinder by means of a suitable program control with. the piston-cylinder unit that produces the vertical movement of mold 3 and tnis will ensure that the desired inclined or oblique movement of inclined mold wall 12 is similarly achieved~
By the utilization of such a program control or with a suitably constructed linkage system, shaped bricks with geometrically differently shaped si~de walls, for example curved side walls, can also be produced wi~th th.e same ad~antages as described above.
It will be understood that this invention is susceptible to modification in order to adapt it to different usages and conditions, and accordingly, it i`s desired to comprehend such modifications within this invention as may fall within the scope of the appended claims.
PRODUCTION OF SHAPED BRICKS
Field of thè Invention The present invention relates to a mold for the producion of sfi.aped 6ri~cRs formed from free-flowing concrete or concrete-like material, more particularly, to such a mold having one or more mold cavities defined 6y vertical side walls and in each cavity a mold wall ls i:nc`lined with respect to the opposite mold wall in that cavity to aefine an angle wfiich opens upwardly.
Background of the Invention In the production of concrete shaped bricks in molds having straight, vertical side walls, the mold is generally moved upwardly ~i~th respect to the concrete brick in order to remove the finished concrete ~ri~cR from the mold. During this movement7 the vertical si;de walls of the~mola move along the outer sides of the concrete -brick to produce a smooth surface which imparts a pleasing appearance to the concrete bri~ck and prevents shrinkage and irregularities from developing on the outer sides of the concrete brick during removal of the bricR from the mold. However, it is not possible with such ~,mold and ~ith this known production process to produce shaped bri-cks having a side wall that is inclined to the vertical, such a~, for example, stai~rs or steps.
It has also 6een Rnown to produce concrete shaped blocks ~it6 s;ide walls that di~er~e upwardly by using manually or ~echanicall~ operatea tipping molds. ~n such a case, the mold that is fi~lled wi~th concrete is pivoted 180 and the finished cQnc~ete shaped 610cR is placed on a steel base. In such a process, a good surface is achieved only on that si-de of the shaped block that rests: on the steel Base. The fi~nished surface of the inclined $ide is gene~all~ not particularly smooth. This process has a furth:e~ di:~sad~antage t6at i~t is expensi~ve, time consuming and enti~rely unsui~table for effi~cient production.
It has also been Rnown to move one or more side walls of the mold in the horizontal direction in order to remove the concrete blocR from the mold. When this i-s done~ however, a smooth and clean surface is not achi~eved since the concrete fills up on the si:de wall of tfie blocR from which the side wall of the mold has been mo~ed and 1~ not smoothed o~t.
~ummary of the Invention It is therefore the principal object of the present invention to provide a novel and improved mold for the production of shaped bri~cks which have at least one side thereof inclined.
rt is another o6ject of the present invention to provide such a mold ~hich ensures precise shaping and a clean smooth surface on all sur~aces of tfie fl~nished shaped bri~ck.
I-t is a further object of the present invention to providel a mold of simpli-fied construction which is inexpensive to maintain and is sui~ta61e for effi`cient production of shaped bricks each naving an inclined surface.
The objects ofthe present invention are achieved and the di~saa~antages of the pri-or art are eliminated by providing a mold i~n whi~ch incli-ned mold walls of the mold cavities can 6e moved upwardly individually or together in the direction in which they are inclined so as to move along the i-nclined surface of the shaped 6ri~cR a~ring tne ~emo~al of the brick from the mold.
Accordi~ng to one aspect of the present invention, a mold ,f~r the production of shaped brick has one or more mold cavities ~nd each mold cavity has a longitudinal vertical side wall, opposed end vertical side walls and an inclined longitudinal side wall.
The l~nclined longitudinal side wall diverges upwardly with respect to t~e ~pposed longi~tudinal side walls in a mold cavity so as to aefine an upwardly opening angle therewith. Means are further Provided for moving each of the inclined side walls upwardly in the direction in which each wall is inclined in!order to open the mold so that shaped brick can be removed. The inclined side wall thus ~oves both verti~cally and horizontally during opening of the mold.
A s1gnifi~cant advantage is ac`nieved from the mold ofthe present in~ention since the inclined mold wall is moved,along its direction of incli.nati~on w~en t~e mold i.~s 6ein~ opened to remove the brick there from ana thi~ movement shapes the inclined surface of the brick.
The obli~ue si~de ~all of the finished shaped brick thus receives a clean smootfi. surface si~ilar to the surfaces of the vertical side walls which are also smoothed out during removal of the mold from the brick because. of the vertical movement of the mold. In addition, self-cleanl~ng of th.e mold walls is achieved.
Brief Description of the Drawings Other objects and ad~antages of the present invention will be apparent upon reference of the accompanying description when taken i~n con.junction w~th t~e followi~ng drawings, which are exemplary, wherein;
Fig. l is a front elevational vi~ew of the molding machine incorporating tfie mold accordi~ng to the present in~ention and parti-ally cut awa~;
Fig. 2 is a view similar to that of Fig. l but showing the mold in its raised position after removal of the shaped bricks from the mold and also partially cut away;
Fig. 3 is a sectional view taken along the line III-III of Fig. 1, Fi-g~ 4 is a sectional view taken along the line IV-IV in Fi`g. 3, Fi~g. 5 is an enlarged view of detail A shown in Fig. 4;
Fig. 6 is an enldrged view of detail B shown in Fig. 3, and Fi~`g. 7 is a secti`onal view taken along the line VII-VII in Fi:9. 3 i`n enlarged scale.
Dè-scri~tidn-~of~the Preferred Embodiments Proceeding next to the drawi-ngs wherein like reference sym601s indicate the same parts throughout the various views a specifl'c em60di~ment and modi~fication of the present invention will be descri`bed in detail~
~ n Fig. 1, there is indicated generally at 2 a molding machine having amold 3 with several mold cavities 4 which is placed on a vi~6rati~ng ta61e 1. Upon completion of the molding ~rocess? the mold 3 i~s raised sufficient'iy to permi-t the insertion of a stora~e 60ard 5 on the vibrati-ng table 1. The mold 3 is Provi:ded wi~th lateral projection 6 whi`ch are detachably mounted tQ ~erti~cally-mova61e s-upport 7 on the molding machine 2. The moYa61e s,~port 7 can ~`e dri~en 6y pi~ston~cylinder units which a~e not i`llustratea.
A piston-cylin~er unit 8 mounted on the molding machine 2 drives pressure plates 9 which rest upon mold cavities 4 that are filled~with concrete compound and are vertically movable in a known manner. The pressure plates 9 correspond in number to the mold cavi~ties 4 so as to form the top walls for the respective mold cavities.
Tfie mola cavitl`es 4 are situated in a mold insert 10 whicn i:s securel~ connected to mold 3 6y a detachable gl~m~;n~ connection (Fi:~.. 3~. T~e mold ins~rt la compri-ses three mold cavities 4 in the. present em60di~ment. Each mold cavity 4 is formed by three ~ertical mold walls 11 w~ich consist of a longitudinal vertical mold wall, two end vertical mold walls and an oblique or inclined movable mold wall 12 whicfi forms with the opposing longitudinal mold wall 11 an angle th.at i~s open upwardly~ Thus, the inclined mold wall 12 di:verges upwardly from its opposed vertical longitudinal wall t As can be seen i~n Fi:~t 1, tfie inclined mold wall 12 is trapezoidal in cross section with an inner surface that is inclined and rests upon a similarly inclined control surface 13 on the edge of the pressure pl-ate 9.. ~n this em60diment, the inclination of the control surface 13 corresponds to the incli-nation of the mold wall 12t Using t~e oblique mold wall 12, a finished shaped brick will tfius recei~e tfi.e desi`red incline or slope on one face and thus, may be used, for example, as a stair.
The three incli-ned mold walls 12 of the three mold cavities 4 are each provi-ded with a support 14 whose ends extend outwardly through openings 15 in the end mold walls 11 and the ends of the support 14 on one si-de of the mold are connected to a piston rod 16 extending from a single~action nydraulic cylinder that is arranged laterall~ to tfie mold 3 ~Figs. 3 and 5~. The other ends of the support 14 are si~ilarly connected to a like piston rod and cylinder arranged`on tfie otfier side of the mold as again shown in Fig. 3.
Piston rod 16 i`s enclosed by spacers 18 and bearing bushes 19 whi~cfi are tig~tened against one another with a screw 20 at the end of t6e pi~ston ~od 16. Thus, bush bearing 19 is clamped respectively between a spacer 18 and support 14 whi`ch is penetrated by the piston rod 16 as can be seen in Fig. 5. Bush bearings 19 are movabl~ mounted in bearings 21 which are attached to the underside of a base plate 22 (Pi`gs. 4 and 6). in this manner, a unit which consi~sts of tfie three in dined mold walls 12 and s:upports 14 can fie mo~ed horizontally withi-n mold 3 together with piston roa 16 h~icfi are i~ntegrated into the mold 3.
~ n operation, the mold cavities 4 are first filled with a sui:tafile concrete compound, vi`brated and sealed in the position according to Fig. 1 by lowering the pressure plates 9.
- ~1 84464 After the filling and vibrating processes, the moid 3 is raised by the movable support 7 into the position shown in Fig. 2 so as to enable the finished shaped ~ricks to be removed from the mold. As t~e mold 3 moves vertically upward, the inclined inner surface of mold wall 12 wi~ll slide aiong control surface 13 of pressure plate 9. As a result, a fiorizontal movement of the inclined mold walls 12, supports 14, and piston rod 16 is produced since the single-action hydrauli~c cylinder 17 are not under pressure and the pistons are pushed back agal~nst the resi~stence of the hydraulic fluid that is free to flo~ out o~ the cyli~nder. Thus, a combined vertical and hori~zonlal movement i`s produced as a result of which the inclined mold wall 12 moves upwardly in the direction of its inclined surface.
Tfie movement o~ t~e i~nclined mold wall 12 against the corresponding inclined outer surface of the shaped brick will be molded and smoothed out. Depending on the position according to Fig. 2, the mold 3 together with pressure plates g can be moved further upwardly so that the finished shaped bricRs can be transporied away by removing the storage board 5 on w-hich they rest.
As a modificati~n,instead of control surface 13 on pressure plate 9? a linkage system positioned outside of the mold cavity 4 can also 6e used and this 1inkage will also produce a moYement of the inclined side walls 12 that is directed obli~quely upwardly by a simulated movement.
As a further modification, it is also possible to use as hydraulic cyli-nder 17 a cylinder that has a double action instead of a single action and to combine this cylinder by means of a suitable program control with. the piston-cylinder unit that produces the vertical movement of mold 3 and tnis will ensure that the desired inclined or oblique movement of inclined mold wall 12 is similarly achieved~
By the utilization of such a program control or with a suitably constructed linkage system, shaped bricks with geometrically differently shaped si~de walls, for example curved side walls, can also be produced wi~th th.e same ad~antages as described above.
It will be understood that this invention is susceptible to modification in order to adapt it to different usages and conditions, and accordingly, it i`s desired to comprehend such modifications within this invention as may fall within the scope of the appended claims.
Claims (9)
1. A mold for the production of shaped brick comprising means (4) in said mold (3) for defining one or more mold cavities, said means comprising a longitudinal vertical side wall (11), opposed end vertical side walls and an inclined longitudinal side wall (12) for each said mold cavity, said inclined longitudinal side wall diverging upwardly with respect to the opposed longitudinal side walls of a said mold cavity to define an upwardly opening angle therewith, and means for moving a said inclined side wall upwardly in the direction in which it is inclined to open the mold so that the shaped brick can be removed.
2. A mold as claimed in claim 1 wherein said inclined side wall moves both vertically and horizontally during opening of the mold.
3. A mold as claimed in claim 1 wherein said means for moving comprises a linkage.
4. A mold as claimed in claim 1 and further comprising means for moving an inclined side wall horizontally within the mold, and means for moving the entire mold vertically upwardly such that the vertical side wall and inclined side wall are moved upwardly.
5. A mold as claimed in claim 4 wherein said mold further comprises one or more pressure plates corresponding to said mold cavity and each pressure plate covering a mold cavity to define a top wall therefor, a said pressure plate having an inclined control surface along which an inclined side wall slides during vertical lifting of the mold.
6. A mold as claimed in claim 1 wherein said mold comprises a plurality of mold cavities and a corresponding plurality of inclined side walls each disposed respectively in a mold cavity, said inclined side walls each having first and second ends, a pair of lateral piston rods (16) each attached to the first and second ends respectively of said inclined side walls such that said inclined side walls are movable longitudinally within the mold, and a pair of hydraulic cylinders (17) each respectively connected to a said piston rod.
7. A mold as claimed in claim 6 and further comprising a mold insert (10) detachably connected in said mold to define said plurality of mold cavity, said mold insert having lateral recesses (15) therein, a plurality of supports (14) each attached to one of said inclined side walls and having ends extending through said lateral recesses, said support ends connected to said piston rod (16).
8. A mold as claimed in claim 6 wherein said hydraulic cylinders each have a single action.
9. A mold as claimed in claim 6 wherein said hydraulic cylinders each have a double action, and a program control connecting said hydraulic cylinders to the piston-cylinder units producing the vertical movement of the mold (3).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19531800A DE19531800A1 (en) | 1995-08-30 | 1995-08-30 | Mold for the production of shaped stones |
| DE19531800.5 | 1995-08-30 | ||
| US08/677,418 US5770244A (en) | 1995-08-30 | 1996-07-09 | Mold for the production of shaped bricks |
| US08/677,418 | 1996-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2184464A1 true CA2184464A1 (en) | 1997-03-01 |
Family
ID=26018102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2184464 Abandoned CA2184464A1 (en) | 1995-08-30 | 1996-08-29 | Mold for the production of shaped bricks |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2184464A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664964A (en) * | 2021-08-13 | 2021-11-19 | 海城利尔麦格西塔材料有限公司 | Preparation method and equipment of magnesia carbon brick |
-
1996
- 1996-08-29 CA CA 2184464 patent/CA2184464A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664964A (en) * | 2021-08-13 | 2021-11-19 | 海城利尔麦格西塔材料有限公司 | Preparation method and equipment of magnesia carbon brick |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20040830 |