EP3127671A1 - Dispositif destine a racler un materiau pouvant s'ecouler - Google Patents

Dispositif destine a racler un materiau pouvant s'ecouler Download PDF

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Publication number
EP3127671A1
EP3127671A1 EP16181834.9A EP16181834A EP3127671A1 EP 3127671 A1 EP3127671 A1 EP 3127671A1 EP 16181834 A EP16181834 A EP 16181834A EP 3127671 A1 EP3127671 A1 EP 3127671A1
Authority
EP
European Patent Office
Prior art keywords
stripping
frame
guide
guide rail
displacement
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.)
Granted
Application number
EP16181834.9A
Other languages
German (de)
English (en)
Other versions
EP3127671B1 (fr
Inventor
Gerald Pascher
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.)
P & F Maschinenbau GmbH
Original Assignee
P & F Maschinenbau GmbH
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 P & F Maschinenbau GmbH filed Critical P & F Maschinenbau GmbH
Publication of EP3127671A1 publication Critical patent/EP3127671A1/fr
Application granted granted Critical
Publication of EP3127671B1 publication Critical patent/EP3127671B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B28B13/0295—Treating the surface of the fed layer, e.g. removing material or equalization of the surface

Definitions

  • the invention relates to a device for stripping flowable material in the production of moldings in a molding die, above which mold at least one horizontally displaceable Grestenwagen is arranged, on which a mold die facing the scraper is movably mounted.
  • the surface quality may be compromised by a stripping operation performed unidirectionally by the flowable sheet material wedge generally forming prior to the stripping element.
  • this wedge formation leads to entrainment or tearing out of the surface material quality mitstaltendem header material from the plate material on the back of the stripping.
  • a stripping element which is transverse to the direction of movement of a filling carriage, in a defined by the top of a mold Plane, is alternately shifted in opposite directions.
  • the stripping element is connected to a support device which can be displaced periodically in the transverse directions by an engine acting in the horizontal direction.
  • a device for preventing surface imperfections, such as concrete blocks which includes motorized means that vibrate an end wall of a drawer-receiving drawer while the drawer travels back over just-filled dies. As a result, adhesion or entrainment of the concrete is avoided on the drawer during its return movement.
  • the known devices thus aim to solve by means of shear forces or vibrations adhering to a scraper material.
  • a dedicated engine is required.
  • an alternating displacement of the stripping element in opposite, substantially vertical direction i. is provided perpendicular to the direction of movement, between a resting on an upper side of the mold die position and a contrast shifted upward position, wherein the displacement of the scraper is coupled via a guide device to the movement of the Grekastenwagens.
  • a, preferably periodic, high / low movement of the scraper element is achieved. If the wiping element is thus temporarily arranged in an upwardly displaced position, the wedge formation is (largely) interrupted and thus a relatively uniform surface of the product to be produced, in particular a concrete block or the like, is achieved. The high / low movement of the scraper element is thus achieved via a (passive) guide device.
  • the displacement of the scraper is coupled via a guide device to the displacement of the Grekastenwagens.
  • the Grekastenwagen which initially receives the flowable material, hereinafter referred to as molding material from which the moldings are made, is designed for a substantially horizontal displacement or displacement above and along the forming die (s) and are during movement over the Forming die (s) the flowable material in this.
  • the displacement of the Grestenwagen preferably has a transport device, in particular rollers, which are in engagement with a separate corresponding guide means, for example, mounted on the molding dies guide rails.
  • the stripping element is movably mounted in opposite directions in the direction of the underside of the filling box carriage facing the forming dies, in order to strip off flowable or tough material after filling in the forming dies, without causing undesired surface damage, for example recesses in the area of already stripped material.
  • the flowable material may include uncured concrete.
  • the guide device is designed for the transformation of the longitudinal movement of the Artkastenwagens on the molding dies in the alternate displacement of the scraper in opposite directions.
  • the stripping element is a stripping frame with two frame sides pointing in the direction of successive molding matrices and at least one transverse side arranged at right angles thereto and connected therewith.
  • the scraper frame having at least three walls and, for example, a U-shaped design, advantageously has a rear scraper wall viewed in the direction of movement over the forming dies as a transverse side and two frame sides or side walls.
  • the sidewalls serve to laterally limit the propagation of the excess, stripped material during the stripping operation, and are preferably arranged substantially in an imaginary extension of the sidewalls of the molding dies.
  • the stripped material is guided within the Abstreifrahmens and can during the displacement of the Greets or the associated Abstreifrahmens on the forming dies without Further measures for the filling of any areas with insufficient fill level are used. Remaining excess material can be collected and reused at the end of individual stripped forming dies.
  • the guiding device is designed for vertical displacement of the scraping element, in particular of the scraping frame.
  • the stripping element or the stripping frame is moved up and down during the displacement of the filling box carriage along the molding dies perpendicular to its direction of movement in the vertical direction.
  • the side walls of the scraper frame may be conveniently extended towards the bottom of the forming dies to provide reliable lateral guidance for the stripped material even in the uppermost position of the scraper frame.
  • lateral movement in opposite directions in the plane of the top of the molding dies in which a lateral displacement of the scraper frame during the longitudinal movement along the mold matrices can leave unstripped areas, in particular a non-stripped corner, is by means of the alternating lifting and lowering movement reliably deducted the entire surface area of the molding dies.
  • the alternating lifting and lowering movement in this case prevents adhesion of an increasingly larger material wedge on the stripping element or frame, which material wedge attachment material would tear out of the already removed surface area.
  • the guide device has at least one guide rail which has elevations and depressions in the direction of successive molding dies and at least one engagement element which engages along the guide rail and is arranged on a frame side.
  • the guiding device has two guide rails which have elevations and depressions in the vertical direction and which extend in the direction of successive molding dies and two in each case one guide rail on each frame side engaging, the guide rail along displaceable engagement elements.
  • the stripping frame is stably supported on both frame sides or side walls, preferably without additional guide elements, only by means of two engagement elements engaging in a guide rail.
  • more than two, for example, three or four engagement elements per frame side may be provided and are in engagement with the associated guide rail.
  • one engagement element and one guide rail can be provided per frame side.
  • front engagement elements may come to rest in a depression when rear engagement elements lie on an elevation.
  • the scraper frame is thereby caused to a rocking movement about an imaginary axis extending transversely to the direction of successive molding dies during the longitudinal movement of the Grekastenwagens.
  • a particularly expedient embodiment is characterized in that the engagement element or the engagement elements is or are each a roller mounted on a frame side. Rollers provide a cost effective and reliable embodiment of engagement elements and eliminate the use of any lubricants to reduce frictional drag between sliding engagement members and the guide rails.
  • the elevations and depressions are arranged periodically at least in a section of the guide rail / guide rails extending along a molding die.
  • the regular lifting and lowering process ensures that avoided by a movement of the stripping frame only in the longitudinal direction caused known negative effects on the product surface.
  • the elevations and depressions may be arranged according to the dimensions of the product to be produced and the material at appropriately selected intervals on substantially rectilinear guide rails.
  • the guide rails may be curved in the vertical direction. The longitudinal extension of each increase and depression can be selected appropriately.
  • the period length of the periodically arranged elevations and depressions can be chosen as desired. Short period lengths, which lead the scraper frame or the scraper element into a more frequent up / down movement, are particularly suitable in the case of molding materials, for which due to their composition a formation of grooves or other surface damage in slow or less frequent upward / downward movements is likely.
  • the elevations and depressions are preferably arranged periodically, the period duration along one or more shape matrices may of course vary.
  • the elevations and depressions form a triangular profile or a wave profile, in particular a sinusoidal wave profile.
  • a wave profile in particular a sinusoidal wave profile.
  • other, for example, trapezoidal profiles of the guide rails may be suitable for the stripping process.
  • the continuous lifting and lowering process can guarantee product surfaces of particularly high quality.
  • the elevations and depressions for a maximum vertical displacement of the Abstreifrahmens in the range of greater than 0 mm to 20 mm, preferably from 2 mm 10 mm are formed.
  • the height of the maximum vertical displacement is adjusted to the desired overfilling of the matrices.
  • a structurally particularly simple and expedient embodiment of the invention can provide that the guide rail / guide rails is / are fastened to the molding dies.
  • the guide rails can be arranged simply extending along the serving as a support molds.
  • the guide rails can be releasably connected, for example by plugging together, clamps or screws, with the forming dies for rapid conversion.
  • molding dies with different dimensions or for receiving different materials can already be provided with suitably shaped guide rails.
  • the stripper frame with at least one biasing element preferably with at least one air cylinder, a hydraulic cylinder, a molded rubber or elastic plastic element or a spring, in particular at least one coil spring is biased in the direction of the forming dies .
  • the biasing element such as the spring, is secured with one end to the Artkastenwagen and with the other end of the scraper frame.
  • air cylinders or hydraulic cylinders are used, these expediently have a memory design in which gas or liquid is stored under pressure.
  • An element formed of rubber or elastic plastic may for example be a rubber buffer or have silicone.
  • Fig. 1 shows a stripping device 1 with a Bastreifrahmen 3 as a scraper 3 ', which together above molding matrices 4 at least in the horizontal direction L as a feed direction, for Filling the molding dies 4 with suitable, flowable molding material M, are displaced.
  • the stripper frame 3 is mounted on the forming dies 4 facing bottom 6 of the Gress 2 alternately in opposite vertical directions X1, X2 displaced.
  • the opposite vertical directions X1, X2 are preferably substantially, though not necessarily, exactly orthogonal to the horizontal direction L, which corresponds to a longitudinal direction in which the forming dies 4 are successively filled.
  • the stripping frame 3 has two frame sides 13 which point in the direction L of successive molding dies 4 and at least one transverse face 14 arranged substantially perpendicular thereto and connected therewith.
  • the substantially vertical displacement of the stripper frame 3 is coupled via a guide device 15 to the horizontal displacement of the Grekastenwagens 2.
  • the guide device 15 at least one, preferably in each case one of the frame sides 13 associated, in the direction L successive molding dies 4 extending guide rail 16 in the vertical direction X1, X2 extending elevations 17 and depressions 18, see also Fig. 5a to 5e , and in engaging, in particular resting, rollers 19 as engagement elements 19 'on.
  • the guide rail 16 is fastened to the molding dies 4, for example, by means of holding elements 20.
  • Fig. 1 the stripper frame 3 is shown in the highest position above the forming dies 4.
  • the stripping frame 3 In order to move the stripping frame 3 with respect to the Baskastenwagen 2 in the vertical direction X1, X2 without jamming and reliable, not shown with the stripping frame 3 and the Artkastenwagen 2 connected guide elements may be provided. Likewise, the stripper frame 3 at least partially embrace the Artkastenwagen 2 and slide along the vertical displacement on the outside of the Grekastenwagens 2. In order to ensure a secure engagement with the guide rails 16, the stripping frame 3 by means of at least one, for example by means of four also attached to Golfkastenwagen 2 biasing elements 21 ', preferably coil springs 21, of which in Fig. 2 only three coil springs 21 are visible, biased in the direction of the forming dies 4.
  • the stripping frame 3 by means of at least one, for example by means of four also attached to Golfkastenwagen 2 biasing elements 21 ', preferably coil springs 21, of which in Fig. 2 only three coil springs 21 are visible, biased in the direction of the forming dies 4.
  • Fig. 3 shows a part of the Greinskys 2 and a part of the Abstreifrahmens 3 in engagement with forming dies 4 during a stripping operation, in a schematic sectional view along the line II in FIG Fig. 2 , For clarity, the guide rails 16 in Fig. 3 not shown.
  • Fig. 3 clearly shows the formation of a wedge K of molding material M during the stripping of filled with the molding material M, in particular overfilled molding dies 4 through the rear transverse side 14 of the Abstreifrahmens 3. Without an alternate displacement of the Abstreifrahmens 3 in opposite directions would be undesirable depressions or grooves Form R in the already stripped area behind the transverse side 14 of the Abstreifrahmens 3, whereby the surface quality of the product to be produced is impaired.
  • the formation of such imperfections is prevented or at least reduced by the lifting and lowering movement of the stripping frame 3, as indicated in the area B of the forming die 4 'by means of the smooth surface O.
  • Fig. 4 shows a portion of the Abstreifrahmens 3 with an attached roller 19 in engagement with a raised portions 17 and recesses 18 having guide rail 16.
  • the elevations 17 and recesses 18 are arranged periodically, but deviating embodiments are not excluded within the scope of the invention.
  • Fig. 5a to 5e show various exemplary embodiments of guide rails 16 with periodically arranged elevations 17 and recesses 18, wherein in the Fig. 5a to 5d substantially rectilinear guide rails 16 with according to corrugated upper edges 22 and in Fig. 5e a curved in the vertical direction, approximately sinusoidally extending guide rail 16 is shown.
  • Fig. 5a a guide rail 16 with individual elevations 17, while the recesses 18 are formed by the horizontally extending majority of the upper edge 22.
  • Fig. 5b shows a guide rail 16 with sinusoidal course
  • Fig. 5c a guide rail 16 with triangular course
  • Fig. 5d a guide rail 16 with a trapezoidal course of the upper edge 22.
  • the period length P and the value of the maximum vertical displacement V of the stripping frame 3 can be suitably selected according to the dimensions of the product to be produced and the molding material M.
  • a drive unit for example, an electric motor is provided for the displacement of the Greinskys 2 in the horizontal direction L. Due to the coupling of the vertical displacement of the Abstreifrahmens 3 to the horizontal displacement of the Greinskys 2 via the guide device 15, no additional drive unit for the stripping frame 3 is required.
  • the stripped molding material M can be compacted in the molding dies 4 in an additional working step by means of a punch (not shown).

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP16181834.9A 2015-07-31 2016-07-29 Dispositif destine a racler un materiau pouvant s'ecouler Not-in-force EP3127671B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50693/2015A AT517544A1 (de) 2015-07-31 2015-07-31 Abstreifvorrichtung

Publications (2)

Publication Number Publication Date
EP3127671A1 true EP3127671A1 (fr) 2017-02-08
EP3127671B1 EP3127671B1 (fr) 2018-06-13

Family

ID=56555295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16181834.9A Not-in-force EP3127671B1 (fr) 2015-07-31 2016-07-29 Dispositif destine a racler un materiau pouvant s'ecouler

Country Status (2)

Country Link
EP (1) EP3127671B1 (fr)
AT (1) AT517544A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE413637C (de) * 1923-09-21 1925-05-13 Gaspary & Co Fa Dr Formen-Fuellvorrichtung
DE1180663B (de) * 1958-04-30 1964-10-29 Kalksandstein U Kalkwerke Dr G Vorrichtung zum Herstellen von Kalksand-lochsteinen oder gelochten Vollsteinen
JPS59176010A (ja) * 1983-03-24 1984-10-05 株式会社イナックス 加圧成形装置
US20060182840A1 (en) * 2005-01-27 2006-08-17 Columbia Machine, Inc. Large pallet machine for forming molded products
US20140048964A1 (en) * 2009-06-03 2014-02-20 Keystone Retaining Wall Systems Llc Floating cut-off bar for a mold box

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE413637C (de) * 1923-09-21 1925-05-13 Gaspary & Co Fa Dr Formen-Fuellvorrichtung
DE1180663B (de) * 1958-04-30 1964-10-29 Kalksandstein U Kalkwerke Dr G Vorrichtung zum Herstellen von Kalksand-lochsteinen oder gelochten Vollsteinen
JPS59176010A (ja) * 1983-03-24 1984-10-05 株式会社イナックス 加圧成形装置
US20060182840A1 (en) * 2005-01-27 2006-08-17 Columbia Machine, Inc. Large pallet machine for forming molded products
US20140048964A1 (en) * 2009-06-03 2014-02-20 Keystone Retaining Wall Systems Llc Floating cut-off bar for a mold box

Also Published As

Publication number Publication date
EP3127671B1 (fr) 2018-06-13
AT517544A1 (de) 2017-02-15

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