EP1213134B1 - Presse - Google Patents

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Publication number
EP1213134B1
EP1213134B1 EP01403160A EP01403160A EP1213134B1 EP 1213134 B1 EP1213134 B1 EP 1213134B1 EP 01403160 A EP01403160 A EP 01403160A EP 01403160 A EP01403160 A EP 01403160A EP 1213134 B1 EP1213134 B1 EP 1213134B1
Authority
EP
European Patent Office
Prior art keywords
cam
compression box
compression
drum
box
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
Application number
EP01403160A
Other languages
English (en)
French (fr)
Other versions
EP1213134A1 (de
Inventor
Giorgio Bertola
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.)
Bureau d'Etudes Techniques et de Realisations Industrielles
Original Assignee
Bureau d'Etudes Techniques et de Realisations Industrielles
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 Bureau d'Etudes Techniques et de Realisations Industrielles filed Critical Bureau d'Etudes Techniques et de Realisations Industrielles
Publication of EP1213134A1 publication Critical patent/EP1213134A1/de
Application granted granted Critical
Publication of EP1213134B1 publication Critical patent/EP1213134B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B30B1/261—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks by cams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/12—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds on the circumference of a rotating drum

Definitions

  • the present invention relates to a press for forming by molding terracotta products such as tiles.
  • Such presses have been known and used for a long time. They have a frame between the vertical lateral flanks of which are arranged a drum and a box usually called compression box.
  • the drum is of polygonal section and carries on each side a part of the forming mold.
  • the compression box carries the part of the forming mold complementary to that carried by the drum and is mounted movable relative to the frame in order to have a vertical back and forth movement allowing it to approach and move away from the drum. This vertical movement is controlled by the rotation of a cam.
  • the compression box has the overall shape of a parallelepiped whose internal volume is largely empty, carrying one or more lower rollers mounted fixed in translation but mobile in rotation near its underside directed towards the drum.
  • the cam is fixed on an axis carried by the frame and is positioned in the empty volume of the compression box, pressing against the roller (s) lower (s).
  • the shape of the cam is such that during its rotation, it pushes the lower rollers and therefore the compression box in the direction of the drum so ensuring the shaping of the material previously positioned on the part of mold carried by said drum.
  • a last device comprises an oleopneumatic cylinder fixed with a part to the frame and secondly to the compression box in order to permanently pull the box compression up.
  • the cylinder can make the total stroke of the displacement of the compression box is about thirty centimeters between its extreme high and low positions. It is then necessary to set up a circuit comprising large power accumulators in order to withstand permanently the weight of the compression box over the entire working stroke thereof.
  • the present invention aims to propose a device ensuring the retention and reminder to the top of the compression box in a simple and reliable way.
  • the invention relates to a press comprising a frame, a box of compression, a drum, a generally elliptical cam mounted on a shaft supported by the frame and intended to control a back-and-forth movement of the box compression, with respect to the drum, by acting on at least one lower roller, parallel to said cam shaft, mounted fixed in translation in lateral faces of the compression box, characterized in that said cam is disposed between said roller lower and at least one upper roller movable in translation, carried by the box compression and maintained in abutment against the periphery of the cam by the action of a jack mounted on the compression box.
  • the press is generally composed of a frame 1, a compression box 3 and a drum 2.
  • the drum 2 is of polygonal section, it has six planar faces 20 in the embodiment shown in the drawing. In operation, each planar face 20 of said drum 2 carries a first part of the mold necessary for the formation of the product, this mold was not shown in the drawing.
  • the frame 1 is generally parallelepiped, it includes a base 11 and a upper wall 12 connected by lateral flanks 10.
  • the compression box 3 is also generally parallelepipedic and has a lower face 31 and an upper face 32 connected by lateral faces 30.
  • the cam 4 intended to control the back-and-forth movement of the box compression 3 is mounted on a shaft 13 supported by the lateral flanks 10 of the frame 1 and extends inside the hollow interior volume of the compression box 3.
  • At least one lower roller 33 two in the example shown in the drawing, arranged parallel to the shaft 13 of the cam is mounted to rotate freely but fixed at translation in the lateral faces 30 of the compression box 3.
  • the cam 4 is in support against these lower rollers 33.
  • the cam 4 has a generally elliptical shape and is mounted off-center on the shaft 13. By this mounting, during the rotation of the cam, its periphery pushes the lower rollers 33 down which induces a descent of the compression box 3.
  • the second part of the mold which is positioned under the face lower 31 presses on the material initially positioned on the first part of mold carried by the drum to ensure the pressing and molding of the material.
  • the cam 4 is such that the support on the material is produced twice for each molding action, the pressure being weakly released between these two support phases, such a cam is known per se.
  • the installation is such that while the compression box is brought back in the high position shown in Figures 1 and 2 and begins its next stroke of descent, the drum 2 is rotated to present another face 20 carrier of a first part of mold to the action of the compression box.
  • the invention relates to the mechanism implemented so that the ascent of the compression box 3 can be ensured by the action of the cam 4.
  • the cam 4 is positioned between the lower rollers 33 and at least one upper roller 52 movable in translation, carried by the box compression and kept in abutment against the periphery of the cam 4 by the action of a jack 56 mounted on the compression box 3.
  • An elongated arm 50 is mounted mobile in rotation on the compression box 3 by its first end 51.
  • the arm 50 carries near its second end at least an upper roller 52 rotatably mounted on an axis 53, two in the example shown in drawing, said rollers 52 being in abutment against the periphery of the cam 4.
  • a jack 56 whose chamber is carried, movable in rotation, by an axis 57 mounted on the upper face 32 of the compression box 3, is coupled by its rod 55 to the second end of the arm 50, around an axis 54.
  • the jack 56 is an oleopneumatic jack powered by an accumulator 6 so that it ensures that the upper rollers 52 are permanently in abutment around the cam 4.
  • the compression box 3 is then held by the support of the rollers upper 52 and lower rollers 33 on generally opposite portions diametrically of the cam 4.
  • the weight of the compression box 3 is not supported by the jack as in the embodiments previously proposed, but by the shaft 13 of the cam, the jack 56 only having to provide the effort necessary to ensuring the support of the upper rollers 52 and the lower rollers 33 on the cam 4, this effort being minimized by the leverage effect provided by the configuration of the arm 50.
  • FIGS 3a to 3e provide a better understanding of the movement of the compression box 3 during the rotation of the cam 4, these figures are presented so that the shaft 13 carrying the cam 4 is always at the same level. Indeed, the position in height of this shaft 13 does not vary during work since it is carried by the lateral sides 10 of the frame 1 of the press.
  • Figures 3a and 3e show said compression box 3 in its position for which it is furthest from the drum 2.
  • Figure 3c shows a position of the cam for which the box compression is in the extreme lower position, during molding.
  • FIGS. 3b and 3d show intermediate positions during the cam rotation 4.
  • the ascent mechanism according to the invention also has the advantage of working the rod 55 of the jack 56 only on one small stroke, much less than the total stroke of the displacement of the gearbox compression 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Saccharide Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (5)

  1. Presse, die zur Formgebung von Terrakotta-Produkten in einer Form bestimmt ist, mit einem Gestell (1), einem Druckbehälter (3), der einen Teil der Form trägt, mit einer Trommel (2) mit vieleckigem Querschnitt, die auf jeder Fläche einen Teil der Form trägt, der zu dem von dem Druckbehälter (3) getragenen komplementär ist, und mit einem Nocken (4), der auf einer Welle (13) montiert ist, die von dem Gestell (1) getragen wird und dazu bestimmt ist, eine Hin- und Herbewegung des Druckbehälters (3) relativ zur Trommel (2) zu steuern, indem sie auf mindestens eine untere Walze (33) einwirkt, die parallel zur Welle (13) des Nockens (4) verläuft und unverschieblich in den Seitenflächen (30) des Druckbehälters (3) montiert ist, dadurch gekennzeichnet, daß der Nocken (4) zwischen der unteren Walze (33) und mindestens einer oberen, verschieblichen Walze (52) angeordnet ist, die von dem Druckbehälter (3) getragen und durch die Wirkung eines auf dem Druckbehälter (3) montierten Zylinders (56) in Anlage gegen den Außenumfang des Nockens (4) gehalten wird.
  2. Presse nach Anspruch 1, dadurch gekennzeichnet, daß die obere Walze (52) von einem länglichen Arm (50) getragen wird, der mit einem seiner Enden (51) verdrehbar auf dem Druckbehälter (3) montiert ist.
  3. Presse nach Anspruch 2, dadurch gekennzeichnet, daß der Arm (50) nahe dem anderen Ende die obere Walze (52) trägt.
  4. Presse nach Anspruch 2 oder nach Anspruch 3, dadurch gekennzeichnet, daß der Zylinder (56) über seinen Schaft (55) an das zweite Ende des Arms (50) angekoppelt ist.
  5. Presse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Zylinder (56) über einen Speicher (6) versorgt wird.
EP01403160A 2000-12-08 2001-12-07 Presse Expired - Lifetime EP1213134B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0015953 2000-12-08
FR0015953A FR2817795B1 (fr) 2000-12-08 2000-12-08 Presse

Publications (2)

Publication Number Publication Date
EP1213134A1 EP1213134A1 (de) 2002-06-12
EP1213134B1 true EP1213134B1 (de) 2004-07-14

Family

ID=8857397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01403160A Expired - Lifetime EP1213134B1 (de) 2000-12-08 2001-12-07 Presse

Country Status (4)

Country Link
EP (1) EP1213134B1 (de)
AT (1) ATE270958T1 (de)
DE (1) DE60104268T2 (de)
FR (1) FR2817795B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100467262C (zh) * 2005-04-11 2009-03-11 朱锦忠 粉末成型压机的顶压凸轮装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE460688A (de) * 1944-10-16
IT1289725B1 (it) * 1996-12-10 1998-10-16 Fomb Officine Meccaniche Bongi Presse a tamburo, in particolare per manufatti in argilla, perfezionate
JPH11221697A (ja) * 1998-02-04 1999-08-17 Amada Co Ltd プレス機械のラム駆動装置

Also Published As

Publication number Publication date
FR2817795B1 (fr) 2003-06-13
EP1213134A1 (de) 2002-06-12
ATE270958T1 (de) 2004-07-15
FR2817795A1 (fr) 2002-06-14
DE60104268T2 (de) 2005-08-04
DE60104268D1 (de) 2004-08-19

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