EP0515293A1 - Vorrichtung zur Stützung und Höhenregelung des Schiebers einer Formmaschine für Betongegenstände - Google Patents

Vorrichtung zur Stützung und Höhenregelung des Schiebers einer Formmaschine für Betongegenstände Download PDF

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Publication number
EP0515293A1
EP0515293A1 EP92420167A EP92420167A EP0515293A1 EP 0515293 A1 EP0515293 A1 EP 0515293A1 EP 92420167 A EP92420167 A EP 92420167A EP 92420167 A EP92420167 A EP 92420167A EP 0515293 A1 EP0515293 A1 EP 0515293A1
Authority
EP
European Patent Office
Prior art keywords
frame
shafts
rod
drawer
supporting
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.)
Withdrawn
Application number
EP92420167A
Other languages
English (en)
French (fr)
Inventor
Daniel Ancrenaz
Jean-Marie Lemaire
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
M.A.B.
Original Assignee
M.A.B.
Balbinot SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by M.A.B., Balbinot SA filed Critical M.A.B.
Publication of EP0515293A1 publication Critical patent/EP0515293A1/de
Withdrawn legal-status Critical Current

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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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/023—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities

Definitions

  • the present invention relates to a device for supporting and adjusting the height of the drawer of a machine for molding concrete products such as rubble stones, block pavers, curbs or the like.
  • a machine of this kind comprises a hopper containing the concrete, a vibrating table and a press for compacting the concrete in the mold and a drawer carried by a frame allowing its sliding to convey the concrete from the hopper into the mold.
  • the drawer is open at its upper and lower ends and slides on a wear plate which is integral with its chassis and which makes it possible to close its lower opening (s) then slides on the upper face of the mold, which is contiguous with the sheet and which is located in the same horizontal plane as the upper face thereof.
  • the concrete thus flows, by gravity, from the hopper into the drawer positioned under it then, after translation of the drawer to the top of the mold, from the drawer into the mold.
  • the upper face of the sheet must therefore be brought in the same horizontal plane as the upper face of the mold.
  • the molds According to the different types of products to be molded, the molds have different heights.
  • the interchange of the mold therefore involves adjusting the height of the upper face of the sheet with respect to the upper face of the mold, with its precise positioning and the maintenance of the plate of the drawer and of its frame.
  • the friction of the slides in the slides and of the slides against the frame make the positioning of the drawer and the maintenance of its plate imprecise during its movement.
  • the jacks support the chassis, which means mounting them near the center of gravity of the latter to avoid as much as possible its pitch and its loss. horizontal attitude during its movement, which however always remain more or less.
  • the present invention aims to remedy these drawbacks.
  • the device it relates to comprises two shafts, parallel and horizontal, carried by the upper part of the frame of the machine, near the ends of which are set levers bent substantially at right angles, connected two by two.
  • a tree to the other by one of their branches by means of connecting rods, substantially horizontal and perpendicular to the axis of the trees, and each connected by their other branch to the frame supporting the drawer by means of other connecting rods, substantially vertical and parallel to each other, means being provided for pivoting at least one of the shafts, for fixing the chassis in position at the desired height and for guiding it during its movement.
  • the rotation of at least one of the shafts, or both according to an identical movement makes the angled levers pivot and causes the movement in vertical translation of the chassis-drawer assembly by means of the connecting rods connected to the chassis, called “de lifting ", to which the chassis is suspended.
  • the connecting rods connecting two by two the bent levers, called “balancing”, make it possible to maintain the levers in identical angular positions from one tree to another during the pivoting of the shafts, and therefore to ensure maintaining the horizontal attitude of the chassis during its movement.
  • the means provided for fixing the chassis in position at the desired height consist of at least one jack connected by its body to the frame of the machine and by its rod to the chassis supporting the drawer, said rod receiving a device, engaged on it. and integral with the cylinder body, of the type normally ensuring a radial clamping on the rod so as to create a friction connection between it and it and which can expand during the injection of a pressurized fluid between the rod and itself- even so as to allow movement of the rod.
  • the means for guiding the chassis during its movement are constituted by two cylindrical columns located on its rear part, on which it is engaged and can slide thanks to its rear ends of tubular shape, and by two lateral skids moving behind the scenes carried by the uprights of the frame.
  • FIG. 1 The figures represent from different angles a machine 2 for molding concrete products which comprises, supported by a frame 3 forming a gantry, a hopper 4 containing the concrete, a vibrating table 5 and a press (not shown) which overhangs the table 5 to compact the concrete in the mold 6, the latter being carried by the table 5 with the interposition of a wooden wear board 7.
  • the machine 2 also comprises a drawer 10 carried by a frame 11 allowing it to slide to convey the concrete from the hopper 4 into the mold 6.
  • the inner walls of the side members 11a of the frame 11 for this purpose have rollers 12 and the side faces of the drawer 10 have complementary slides 13 rolling on these rollers 12.
  • the drawer 10 is open at its upper and lower ends and slides on a wear plate 15, carried by the side members 11a, which makes it possible to close off its lower opening (s), then slides on the upper face of the mold 6, which is positioned so as to be contiguous with the sheet 15 and to be located in the same horizontal plane as the upper face of the latter.
  • the concrete thus flows, by gravity, from the hopper 4 into the drawer 10 positioned under it (in solid lines in the figures), then, after translation of the drawer 10 to above the mold 6 (in dashed lines ), from the drawer 10 into the mold 6 without flowing from the drawer 10 during its passage from above the sheet 15 to above the mold 6.
  • a jack 20 and a set of connecting rods 21, 22 are provided for actuating the drawer 10.
  • the longitudinal members 3a of the frame 3 each comprise two bearings 25 supporting two shafts 26, parallel and horizontal. The latter carry, located near their ends and wedged on them, levers 27 bent substantially at right angles.
  • Two levers 27 located on the same side of the machine 2 are connected, from one shaft 26 to the other, by a connecting rod 28, substantially horizontal and perpendicular to the axis of the shafts 26, articulated at one 27a of their branches 27a, 27b.
  • Each lever 27 is also connected, by its branch 27b, to one of the side members 11a by means of other connecting rods 29, substantially vertical and parallel to one another.
  • One of the shafts 26 is connected to a motor means (not shown), provided for its rotation drive.
  • FIG. 3 shows that each lever 27 as well as each spar 11a have two parallel walls forming a yoke housing the heads of the connecting rods 29, the connecting rods 28 being, for their part, mounted on the external face of one of said walls so as not to hinder the arrival of the levers 27 in the position shown in FIG. 2.
  • the machine 2 also comprises two jacks 30 each of which is connected by its body 30a to the frame 3 and by its rod 30b to one of the side members 11a, said rod 30b receiving a device 31, engaged on it and integral with the body of the jack, of the type essentially comprising a rigid sleeve normally ensuring a radial tightening on the rod 30b so as to create a friction connection between it and it, and which can expand during the injection of a pressurized fluid between the rod 30a and it - even to authorize the movement of the rod 30b.
  • the machine 2 comprises two columns 40 held by the frame 3, on which are engaged and can slide the rear ends 41 of corresponding tubular shape of the side members 11a of the chassis 11. In its front part, the latter is guided by two pads lateral 42 moving in slides 43 carried by the uprights 3b of the frame 3.
  • the set of shafts 26-levers 27-connecting rods 28 and 29 makes it possible to support and adjust the height of the chassis 11 as a function of the height of the mold 6, the pivoting of at least one of the shafts 26 allowing said adjustment to be made, as shown by comparison of Figures 1 and 2.
  • the chassis 11 is perfectly supported, and its height adjustment is done in a precise manner and with horizontal support of the base of the chassis 11.
  • the jacks 30 and devices 31 constitute means for fixing in position the chassis 11 at the desired height when the supply of pressurized fluid to the devices 31 is cut off and the columns 40 as well as the pads 42 and slides 43 constitute guide means in translation of the chassis 11.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
EP92420167A 1991-05-24 1992-05-22 Vorrichtung zur Stützung und Höhenregelung des Schiebers einer Formmaschine für Betongegenstände Withdrawn EP0515293A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9106430 1991-05-24
FR9106430A FR2676678A1 (fr) 1991-05-24 1991-05-24 Dispositif de support et de reglage en hauteur du tiroir d'une machine de moulage de produits en beton.

Publications (1)

Publication Number Publication Date
EP0515293A1 true EP0515293A1 (de) 1992-11-25

Family

ID=9413215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92420167A Withdrawn EP0515293A1 (de) 1991-05-24 1992-05-22 Vorrichtung zur Stützung und Höhenregelung des Schiebers einer Formmaschine für Betongegenstände

Country Status (2)

Country Link
EP (1) EP0515293A1 (de)
FR (1) FR2676678A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5889135A (en) * 1995-02-16 1999-03-30 Basf Aktiengesellschaft Biodegradable polymers, process for producing them and their use in preparing biodegradable moldings

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0399281A2 (de) * 1989-05-24 1990-11-28 Gräbener Pressensysteme GmbH & Co. KG Füllvorrichtung zur automatischen Füllung der Matrize von Pulverpressen
DE4009607A1 (de) * 1989-05-26 1990-11-29 Laeis & Bucher Gmbh Verfahren bei der ausuebung schlagartiger presshuebe zur herstellung von formkoerpern aus einem koernigen oder pulverfoermigen werkstoff und vorrichtung zur durchfuehrung des verfahrens

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0399281A2 (de) * 1989-05-24 1990-11-28 Gräbener Pressensysteme GmbH & Co. KG Füllvorrichtung zur automatischen Füllung der Matrize von Pulverpressen
DE4009607A1 (de) * 1989-05-26 1990-11-29 Laeis & Bucher Gmbh Verfahren bei der ausuebung schlagartiger presshuebe zur herstellung von formkoerpern aus einem koernigen oder pulverfoermigen werkstoff und vorrichtung zur durchfuehrung des verfahrens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5889135A (en) * 1995-02-16 1999-03-30 Basf Aktiengesellschaft Biodegradable polymers, process for producing them and their use in preparing biodegradable moldings

Also Published As

Publication number Publication date
FR2676678A1 (fr) 1992-11-27

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