EP0117877B1 - Organe de transmission de vibrations - Google Patents

Organe de transmission de vibrations Download PDF

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Publication number
EP0117877B1
EP0117877B1 EP83101698A EP83101698A EP0117877B1 EP 0117877 B1 EP0117877 B1 EP 0117877B1 EP 83101698 A EP83101698 A EP 83101698A EP 83101698 A EP83101698 A EP 83101698A EP 0117877 B1 EP0117877 B1 EP 0117877B1
Authority
EP
European Patent Office
Prior art keywords
supporting carrier
layer
element according
recesses
sheet
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
Application number
EP83101698A
Other languages
German (de)
English (en)
Other versions
EP0117877A1 (fr
Inventor
Sigmund K. Lehmann
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.)
Conmat AG
Original Assignee
Conmat AG
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 Conmat AG filed Critical Conmat AG
Priority to AT83101698T priority Critical patent/ATE19485T1/de
Priority to EP83101698A priority patent/EP0117877B1/fr
Priority to DE8383101698T priority patent/DE3363246D1/de
Publication of EP0117877A1 publication Critical patent/EP0117877A1/fr
Application granted granted Critical
Publication of EP0117877B1 publication Critical patent/EP0117877B1/fr
Expired 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
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • 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
    • B28B1/081—Vibration-absorbing means
    • 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article

Definitions

  • the present invention relates to an element for transmitting vibrations in a vibrating or vibrating device.
  • Said element is said to be used in the industrial production of all types of concrete and cement products, in particular slabs, and in the rational production of molded articles from other materials in a wide range of technical activities, such as filling, distributing, metering and compacting processes on vibrating or vibrating devices be applicable.
  • FIGS. 1 a and 1 b The basic construction according to FIGS. 1 a and 1 b is operated according to the so-called push-through method and the other basic construction according to FIGS. 2 a and 2 b according to the so-called hermetic method.
  • 1 and 2a show the devices after the mold cavity has been filled with filling material and
  • FIGS. 1b and 2b show the devices when demolding the filling material compressed into a plate.
  • the construction according to FIG. 1 has a mold base 1 which normally consists of a solid steel plate, which, according to FIG. 1a, lies freely on a vibrating table 2 and is freely surrounded by the mold frame 3 which is arranged at a distance above the vibrating table.
  • Rods 4 connected to a lifting device, not shown, extend freely through the vibrating table 2 and engage the mold base 1 in order to bring it to the desired height with respect to the mold frame.
  • a vibrating device 5 engages with the underside of the vibrating table 2 in order to generate the desired vibrations, which are then transmitted via the vibrating table 2 to the mold base 1 and thus to the filling material 6.
  • On the mold base 1 there is usually a structured plastic mat 7 on its surface facing the filling material.
  • the filling height h for the product to be produced can be varied by setting different relative positions of the mold base 1 with respect to the mold frame 3.
  • Very thin components can be produced in relation to the edge length, since the finished molding is ejected lying on the mold base.
  • Vibrations generated for concrete compaction are transferred directly into the material, without hindrance or damping by the mass of any machine parts, such as mold frames, which are loaded on the vibration table.
  • the vibrating table 2 has a vibrating table 2, which at the same time forms the mold base.
  • the vibrating table 2 is covered with a plastic mat 7, which is structured on its upper side and has a raised edge.
  • a molding frame 3 lies sealingly on the upstanding border, which forms the molding cavity with the mat for receiving the filling material 6.
  • the vibrating table or mold base is set in vibration directly by means of a vibrating device (not shown), with a press again exerting the desired pressing pressure on the entire filling material, as in the device according to FIG. 1. 2b, the mold frame 3 is lifted off the mold base 2 or the plastic mat 7 according to FIG. 2b, the compacted component remaining clamped in the frame 3 when it is lifted off.
  • the mold cavities are tight at the bottom, which can be positive when processing wet materials.
  • the device generates relatively little noise, since there is no steel plate lying freely in the mold, which is caused to vibrate by vibrating forces.
  • the rubber or plastic layers on the vibrating table are relatively dimensionally stable, i.e. they tend less to flow and / or creep due to the edge clamping by the mold frame.
  • the aim of the present invention is to provide an element for transmitting vibrations in a vibrating or vibrating device for processing a wide variety of materials, which has a low noise emission and which, when used as a molded floor or vibrating table for the production of, in particular, plate-like concrete elements, creates a vibrating or vibrating device, which allows the use of the above-mentioned advantages of the two basic constructions according to FIGS. 1 and 2.
  • FIG. 3 shows a cross section through part of a mold base or vibration table according to the invention
  • the plate-like element according to FIG. 3 has a rigid or dimensionally stable support structure in the form of a support beam 10, which can have a rust-like structure and can be used as a mold base or a vibrating table.
  • the support structure 10 On its underside, the support structure 10 is non-positively and interchangeably connected to a wear-resistant plate 11, e.g. screwed.
  • the support structure 10 On its upper side, the support structure 10 is non-positively connected to a perforated sheet 12, e.g. connected by welding.
  • the sheet 12 has circular through holes 13 for the purpose of reducing the noise, the hole proportion being at least 20% of the sheet area.
  • the unit formed from the support structure 10 and perforated plate 12 is covered on all sides with the exception of the underside with a rubber-elastic and / or vibration-damping mass 14, which also fills the cutouts in the interior of the support structure 10, and is intimately connected.
  • All elastomers including cellular or porous) based on natural or synthetic rubber, synthetic rubber and / or plastics (with or without filler or reinforcing constituents) with viscoelastic properties are suitable as mass 14, with the suspension and in other cases in certain cases Cases where the damping properties are in the foreground.
  • the mass 14 is preferably applied in the casting process. As mass 14 comes e.g. Polyethylene, cast polyurethane, polyvinil chloride, nitrile rubber or polychlorobutadiene in question.
  • the enveloping mass 14 has a high sound-reducing effect and offers the possibility of forming a layer 15 lying above the perforated plate 12 and a lateral border 16 of the mold base, both of which can be created in such a way that they meet the respective application.
  • the unit formed from the elastomer layer 15, the perforated plate 12 and the support structure 10 can be regarded as a three-layer body, the sound radiation in particular if the layer thickness ratios (layer thickness of the elastomer layer 15, the perforated plate layer 12 and the support structure 10) and the proportion of holes in the perforated plate are selected appropriately is reduced through the three layers without impairing the transmission of vibrations.
  • the element according to FIG. 3 is particularly suitable for use as a molded floor or vibrating table for the production of concrete elements, such as concrete slabs, in a concrete press roughly corresponding to those according to FIGS. 1 and 2.
  • the element according to FIG. 3 replaces the steel plate 1 together with it Mat 7 resp. the vibrating table 2 together with the plastic mat 7.
  • the vibrating device in the example according to FIG. 1 continues to act on the vibrating table 2 and in the example according to FIG. 2 now on the underside of the wear plate + 1, and the frame 3 acts in both examples with the suitably designed side border 16 together for this purpose.
  • the lateral border 16 can be designed as a seal between the mold base and the mold frame 3 when internal pressure occurs, originating from the pressing force acting on the filling material from above, in the sense of a lip sleeve or sealing packing, as shown in FIGS. 4a to 4c.
  • the upper side of the top layer 15 made of elastomer, which is in direct contact with the filling material to be processed into a shaped piece, is preferably structured in order to give the piece to be manufactured the desired surface structure.
  • the elastomer layer 15 and the perforated plate 12 interact in a highly advantageous manner in order to remove the separating effect between the upper side of the mold base and the compressed or compacted molding, eg made of concrete.
  • the elastomer layer 15 lying above the perforated plate 12 should have good suspension properties.
  • the deflection of the elastomer layer 15 is greater at the points above the holes 13 of the perforated plate 12 than above the points where the plate 12 is not perforated and thus the elastomer layer 15 is supported.
  • the elastomer layer 15 After the pressing process, i.e. when the filling material is relieved of the pressing pressure, the elastomer layer 15 also springs back to its initial position to different extents in accordance with the previous different deflections.
  • the molded part compressed or compressed from the filling material e.g. a concrete slab, partly from the elastomer layer, which supports the separation effect.
  • the holes 13 of the layer formed by the perforated plate 12 can be completely filled with air or another gas or with the plastic compound 14.
  • the layer thickness ratios of elastomer layer 15 and perforated plate 12 can be matched to the respective filling material / pressed material and to the pressing pressures to be maintained.
  • the springback differences, and thus the separation effect, are greatest, respectively. best with thin layer 15 and relatively thick perforated plate 12. It is also due to the composition of the Consider good press. If this is, for example, coarse-grained, an optimal separation effect can be achieved with rather thick layers 12 and 15 and with coarse-perforated perforated holes.
  • masses 14 of different properties can be used at the different locations of the element according to FIG.
  • a plate-shaped, rigid or dimensionally stable cast body 17 made of cast iron or cast steel could also be used, as shown in FIG. 5, the outer layer 18 of which has an outer layer 18 which is open to the outside, e.g. circular recesses 13 is provided, which outer layer 18 takes over the function of the perforated plate 12 with a corresponding proportion of holes.
  • such a cast body which can also be provided with recesses on the inside or on its underside, is encased and intimately connected with a mass 14, so that an upper layer located above the grid-like recesses in the outer layer and one Border is formed from the mass 14.
  • the underside of the support structure 10 is also non-positive with a perforated sheet 12, e.g. by means of a welded joint, connected and covered with a layer 15 from the mass 14 and intimately connected.
  • Both the lower perforated plate 12 and the layer 15 can be excluded in an area 18 which can be configured in a suitable manner in order to come into engagement with a vibrating device.
  • the element according to FIG. 5 could also have recesses 13 in the lower outer layer of the cast body 17 and a further layer made of the mass 14 covering this outer layer and thereby be formed on the underside corresponding to the element according to FIG. 6.
  • the perforated plate 12 is preferably made of metal, such as steel. However, it can also be made of a suitable plastic, which in the present context has the same or a similar effect as a metal and is therefore also suitable as a material for the perforated plate 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Floor Finish (AREA)
  • Pulleys (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Springs (AREA)
  • Vibration Prevention Devices (AREA)

Claims (14)

1.- Organe pour la transmission de vibrations dans un dispositif de vibration ou producteur de secousses, caractérisé en ce que cet organe est un corps stratifié, l'une des couches étant réalisée comme support d appui TI0) rigide à la flexion, et au moins une deuxième couche étant réalisée comme une tôle perforée (12) reliée, avec transmission des forces, à l'une des faces extérieures du support d'appui (10), et en ce qu'au moins sur la face extérieure de la tôle, est rapportée une autre couche (15) d'une matière (14) pourvue de propriétés élastiques et/ou amortisseuses d'oscillations.
2.- Organe pour la transmission de vibrations dans un dispositif de vibration ou producteur de secousses, caractérisé en ce que l'organe comporte un support d'appui rigide à la flexion, de préférence constitué d'une pièce coulée (17), et en ce qu'au moins, dans l'une des couches extérieures (18) de celui-ci, on a pratiqué des évidements (13), et en ce qu'au moins sur la face extérieure de cette couche extérieure (18) du support d'appui, est rapportée une autre couche (15) d'une matière (14) pourvue de propriétés élastiques et/ou amortisseuses d'oscillations.
3.- Organe suivant la revendication 1 ou 2, caractérisé en ce que la matière (14) pourvue de propriétés élastiques et/ou amortisseuses d'oscillations est un élastomère à base de caoutchouc naturel, de caoutchouc synthétique et/ou de matières synthétiques. 4.- Organe suivant la revendication 1 ou 2, caractérisé en ce que le corps du support d'appui (10) présente des évidements, en particulier est perforé, et cela en fait d'une manière qui tient compte de la matière et des dimensions en ce qui concerne le diamètre des trous et la distance entre trous, dans le but de réduire au minimum le rayonnement sonore provoqué par les ondes de flexion.
5.- Organe suivant la revendication 1 ou 2, caractérisé en ce que le support d'appui (10) est construit à la façon d'une grille.
6.- Organe suivant l'une des revendications 1 à 5, caractérisé en ce que l'unité constituée du support d'appui (10) et de la tôle perforée (12), ou du support d'appui avec une couche extérieure perforée (18), est enrobée de toutes parts, à l'exception d'au moins une partie de la face inférieure, dans la matière susdite (14) pourvue de propriétés élastiques et/ou amortisseuses d'oscillations.
7.- Organe suivant la revendication 6, caractérisé en ce que la partie de bord (16) de la matière (14) susdite qui entoure l'unité, est conformée en élément d'étanchéité, par exemple en profil de lèvre ou sous forme d'une ou de plusieurs rainures périphériques.
8.- Organe suivant la revendication 1 ou 2, caractérisé en ce que la tôle perforée (12), ou la couche extérieure (18) pourvue d'évidements (13), du support d'appui, présente une proportion de trous ou une proportion d'évidements d'au moins 20°-'o.
9.- Organe suivant la revendication 1 ou 2, caractérisé en ce que la couche de matière susdite (14) qui se trouve sur la tôle perforée (12) ou sur la couche extérieure pourvue d'évidements, du support d'appui, a une dureté Shore A de 50° à 90'.
10.- Organe suivant la revendication 1 ou 2, pour l'emploi comme fond de moule ou comme table de vibration pour la fabrication de pièces moulées d'une matière contenant un agrégat granuleux et un liant, en particulier de béton, dans une presse, caractérisé en ce que la couche (15) de matière susdite (14), rapportée sur la face extérieure de la tôle perforée (12) ou sur la couche extérieure (18) pourvue d'évidements (13), du support d'appui, sert de base ou de matrice pour la pièce moulée à fabriquer.
11.- Organe suivant la revendication 10, caractérisé en ce que la base (15) pour la pièce moulée à fabriquer est structurée sur la face extérieure tournée vers la pièce moulée.
12.- Organe suivant la revendication 10 ou 11, caractérisé en ce que les trous (13) de la tôle (12) ou les évidements (13) de la couche extérieure (18) du support d'appui, contiennent de l'air ou un gaz.
13.- Organe suivant la revendication 1 ou 2, caractérisé en ce qu'une plaque d'usure (11) interchangeable est posée sur la face extérieure non tournée vers la tôle perforée (12) ou vers la couche extérieure (18) susdite, de l'organe.
14.- Organe suivant l'une quelconque des revendications précédentes, caractérisé en ce qu'une tôle perforée (12) est disposée aussi en liaison, avec transmission des forces, avec la face extérieure opposée du support d'appui (10),ou en ce que, dans la couche extérieure opposée (18) du support d'appui, sont pratiqués des évidements (13), et en ce que, sur la face extérieure de cette tôle (12) ou sur la face extérieure de cette couche extérieure (18), est rapportée une couche (15) de la susdite matière (14) pourvue de propriétes elastiques et/ou amortisseuses d'oscillations, couvrant au moins partiellement cette face extérieure.
EP83101698A 1983-02-22 1983-02-22 Organe de transmission de vibrations Expired EP0117877B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT83101698T ATE19485T1 (de) 1983-02-22 1983-02-22 Element zur uebertragung von vibrationen.
EP83101698A EP0117877B1 (fr) 1983-02-22 1983-02-22 Organe de transmission de vibrations
DE8383101698T DE3363246D1 (en) 1983-02-22 1983-02-22 Vibration transmission member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83101698A EP0117877B1 (fr) 1983-02-22 1983-02-22 Organe de transmission de vibrations

Publications (2)

Publication Number Publication Date
EP0117877A1 EP0117877A1 (fr) 1984-09-12
EP0117877B1 true EP0117877B1 (fr) 1986-04-30

Family

ID=8190308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101698A Expired EP0117877B1 (fr) 1983-02-22 1983-02-22 Organe de transmission de vibrations

Country Status (3)

Country Link
EP (1) EP0117877B1 (fr)
AT (1) ATE19485T1 (fr)
DE (1) DE3363246D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0651692A4 (fr) * 1993-03-31 1996-02-28 Perval Pty Ltd Moule pour materiau durcissant.
NL1002858C2 (nl) * 1996-04-12 1997-10-15 Boer Beton Den Inrichting alsmede werkwijze voor het vervaardigen van vormlingen, zoals tegels.
DE19631516A1 (de) * 1996-08-03 1998-02-05 Wacker Werke Kg Vorrichtung zum Aufnehmen von Schalungselementen für Bauteile aus Beton bei der Fertigung der Bauteile
GB2593517B (en) * 2020-03-26 2024-04-03 Ibstock Brick Ltd A Method of Manufacturing a Brickwork Member
DE102023112231A1 (de) 2023-05-10 2024-11-14 Reckli Gmbh Matrize zur Strukturierung von Bauwerksflächen

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE563415A (fr) *
BE429228A (fr) *
DE870609C (de) * 1951-04-19 1953-03-16 Licentia Gmbh Schwingtisch mit schalldaemmendem Belag
DE887622C (de) * 1951-08-17 1953-08-24 Fornaci Riunite S P A Verfahren und Vorrichtung zum Formen von keramischen Gegenstaenden
BE555068A (fr) * 1956-02-18
FR1586203A (fr) * 1968-09-12 1970-02-13
FR2071454A5 (en) * 1969-12-30 1971-09-17 Joos Pierre Vibrated concrete moulds - lined with resiliennt (silicone rubber) - sheeting giving a smooth surface finish
DE2152423A1 (de) * 1971-10-21 1973-06-07 Schuette Holzwerke Ag Lanz Bei der herstellung strukturierter wandflaechen verwendbares modell
DE2163945A1 (de) * 1971-12-22 1973-06-28 Ebo Elemente Bau Gmbh U Co Kg Hartelastisches dichtungs- und kantenformprofil fuer betonschalungen
DE2257254C2 (de) * 1972-11-22 1975-10-16 Fritz 8000 Muenchen Pietrowiak Schalungsplatte aus Stahl zum Herstellen von Betonfertigteilen
US4037816A (en) * 1976-04-23 1977-07-26 Scott Samuel C Apparatus for forming a liner on a planar form means

Also Published As

Publication number Publication date
ATE19485T1 (de) 1986-05-15
EP0117877A1 (fr) 1984-09-12
DE3363246D1 (en) 1986-06-05

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