EP0061538A1 - Machine pour mouler des carreaux en général - Google Patents

Machine pour mouler des carreaux en général Download PDF

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Publication number
EP0061538A1
EP0061538A1 EP81200348A EP81200348A EP0061538A1 EP 0061538 A1 EP0061538 A1 EP 0061538A1 EP 81200348 A EP81200348 A EP 81200348A EP 81200348 A EP81200348 A EP 81200348A EP 0061538 A1 EP0061538 A1 EP 0061538A1
Authority
EP
European Patent Office
Prior art keywords
moulding
roller
elastic
machine
sheath
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Withdrawn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
EP81200348A
Other languages
German (de)
English (en)
Inventor
Bardelli Lodovico
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP81200348A priority Critical patent/EP0061538A1/fr
Publication of EP0061538A1 publication Critical patent/EP0061538A1/fr
Withdrawn legal-status Critical Current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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/12—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material
    • B28B3/14—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material with co-operating pocketed rollers

Definitions

  • the machine described and represented in said application is constituted essentially by two strong side pieces with respect to which two horizontal superposed rollers rotating in opposite directions are rotatably mounted.
  • each roller is provided on its circumference with a limited number of moulding half-cavities which, together with the half-cavities of the remaining roller constitute a like number of cavities in which the clay tiles are formed.
  • each half-cavity is defined perimetrally by a series of sharp profiles or blades.
  • the main object of the present invention is to propose improvements to machines of the aforesaid type which, by means of a simple, rational, functional and highly reliable constructional design, remedy the aforesaid drawbacks by ensuring separation of the tiles after formation, even when the moisture content of their mixture is not the optimum value.
  • the basic idea of the invention is to provide, for each moulding roller of a machine of the aforesaid type, a sheath or cover arranged to make continuous direct contact with at least those generating lines of the corresponding moulding roller which are concerned in the moulding stage, the sheath or cover having elevated elastic characteristics and being constantly maintained under transverse tension either by means of a suitable member or by initial elastic deformation on being mounted over its roller.
  • the sheath according to the invention completely surrounds the corresponding roller, and its characteristics are such that it can support the inevitable pinching which occurs at the roller blades.
  • this sheath or cover which is formed for example from a natural or synthetic elastomer, thus performs the double function of a lining for the corresponding half cavity in that it assumes the configuration of this latter on deforming, and of an expulsion member for the corresponding tile in that it again assumes the configuration which it had before the moulding.
  • the said side pieces 2 are fixed lowerly to a suitable base 3.
  • the said frame is disposed in front of a normal clay die 26, designed to form a continuous cord of clay 27 which is fed between the two moulding rollers of the invention.
  • the said moulding rollers are superposed and rotate in opposite directions as described hereinafter.
  • the lower moulding roller 16 comprises a horizontal shaft 7 which is rotatably mounted relative to the side pieces 2 by way of suitable rolling bearings.
  • Said shaft 7 extends beyond said side pieces to receive at one end a drive gear 11 through which motion is transmitted to the invention, and at the other end a gear wheel 8 for transmitting motion to the upper moulding roller 17.
  • the horizontal shaft 7 is provided with two opposing flanges 14 which act as a support for a cylindrical shell 15. This latter is provided longitudinally with blades 20, the end flanges 14 being provided with circumferential blades 21, the depth of which is equal to that of the longitudinal blades 20.
  • two slide seats 6 lying at a level higher than the level of the lower horizontal shaft 7 are formed on the outer faces of the side pieces 2 by means of two vertical opposing plates 4 fixed to these latter.
  • Each slide seat 6 acts as a housing for a slide 66, the upper end of which is connected to a suitable adjustment pin 5 which is screwed through the cross member 1.
  • An upper horizontal shaft 13 is rotatably mounted relative to the two vertical opposing slides 66 by means of suitable rolling bearings.
  • This latter shaft passes through the two side pieces 2 and through the pair of vertical plates 4 by way of apertures, which are greater in size than said upper horizontal shaft 13.
  • Said shaft 13 is disposed so that it lies exactly above the lower horizontal shaft 7 in a vertical direction.
  • Said upper horizontal shaft 13 acts as a support for the upper moulding roller 17, which comprises two opposing flanges 18 torsionally rigid with the corresponding shaft and clamping a cylindrical shell 19 therebetween.
  • This latter is provided with longitudinal blades 20 entirely similar to those provided on the lower cylindrical shell 15, and the end flanges 18 are provided with circumferential blades 21.
  • the upper moulding roller 17 is circumferentially provided with a set of moulding half cavities conjugate with those provided on the lower moulding roller 16, and which together with these latter form a like number of moulding cavities for said tiles 24.
  • the upper horizontal shaft 13 extends beyond the right hand side piece 2 as shown in Figure 2, where a gear wheel 12 is keyed thereon.
  • said pinions 9 and 10 are mounted rotatable on two pins branching from an arm 22.
  • This latter is conveniently inclined to the vertical, and its lower end is pivoted on the corresponding vertical plate 4 concentrically to the respective end of the lower horizontal shaft 7.
  • the upper end of the swivel arm 22 is connected to a tension spring 23, the other end of which is hooked to the vertical plate 4.
  • the advantageous provision of the reciprocating arm 22 ensures engagement between the toothed members even when the relative position between the moulding rollers 16 and 17 is varied by means of the slides 66.
  • a sheath or cover 29 of full length is provided to completely surround the upper, front and lower generating lines of the upper moulding roller 17 by means of direct contact, and is deviated about a horizontal idle roller 28 disposed at a level higher than that occupied by the upper surfaces of the tiles 24 leaving the machine according to the invention.
  • an elastic sheath or cover 29 of full length is also provided for the lower moulding roller 16, and makes direct contact with the upper, front and lower generating lines of the lower moulding roller 16.
  • This elastic sheath or cover 29 is also deviated about a lower idle roller 28, this latter as in the case of the preceding one being supported by the side piece 2, which occupies a level which is at least slightly lower than that occupied by the slide plane defined by the upper generating lines of the rollers of the roller table 25.
  • the idle rollers 28 are provided to maintain the two elastic sheaths 29 constantly under tension, these being preferably constituted by a natural or synthetic elastomer.
  • the deviation members 28 are however not absolutely necessary for ensuring the required tension to the elastic sheaths 29.
  • Figure 3 which shows an alternative embodiment of the present invention, it can be seen that the same advantages can be obtained by means of a full length elastic sheath or cover 29 which is mounted over the moulding rollers 16 and 17. with an initial stretching caused by elastic deformation such as to enable the sheath to remain constantly under tension.
  • bas-relief impressions to be reproduced on the exposed surfaces of the tiles 24, can be provided on the bottom of the moulding half cavities of the two moulding rollers 16 and 17, more precisely on the outer generating lines of the shells 15 and 19.
  • the two moulding rollers 16 and 17 rotate in opposite directions to entrain with them the two elastic sheaths 29 which are deviated over the idle rollers 28.
  • the distance between the horizontal axes 7 and 13 is to be adjusted such that the sheaths are subjected to said pinching but not to shear stresses, said pinching lying within the range of elasticity of the said elastomer so that this latter can again assume its initial configuration when it loses contact with the said blades.
  • the pair of elastic sheaths 29 is elastically urged to assume the inner configuration of the moulding cavity thus formed, i.e. the external configuration of the corresponding tile 24.
  • the elastic sheaths or covers 29 perform an internal lining function for the moulding half cavities.
  • said elastic sheaths or covers 29 act as expulsion members in that because of the tension or elastic prestressing to which they are subjected, they tend to again assume their initial configuration, i.e. their configuration in those positions external to the working section, so that they ensure extraction of the tiles 24 from the moulding cavities by discharging them on to the upper generating lines of the rollers of the discharge roller table 25.
  • Said cylinder is then extracted while retaining the sheath 29 at one end, this thus becoming deposited under elastic prestress on to the cylindrical generating surface of the moulding roller 16 or 17.
  • the sheaths 29 need only to make direct contact with those longitudinal zones of the rollers 16 and 17 which are participating in the moulding stage.
  • two end rings mounted on the outside of the end flanges l4 and 18 can be provided, their purpose being to clamp the circumferential end edges of the sheaths to also provide them with an elastic prestress in a longitudinal direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
EP81200348A 1981-03-30 1981-03-30 Machine pour mouler des carreaux en général Withdrawn EP0061538A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP81200348A EP0061538A1 (fr) 1981-03-30 1981-03-30 Machine pour mouler des carreaux en général

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81200348A EP0061538A1 (fr) 1981-03-30 1981-03-30 Machine pour mouler des carreaux en général

Publications (1)

Publication Number Publication Date
EP0061538A1 true EP0061538A1 (fr) 1982-10-06

Family

ID=8188119

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81200348A Withdrawn EP0061538A1 (fr) 1981-03-30 1981-03-30 Machine pour mouler des carreaux en général

Country Status (1)

Country Link
EP (1) EP0061538A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238506A (en) * 1989-12-01 1991-06-05 Apv Corp Ltd Improvements in or relating to apparatus for crimping
CN107738337A (zh) * 2017-11-06 2018-02-27 广西师范大学 一种硅酸钙板用辊压机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE114473C (fr) *
DE114472C (fr) *
DE539923C (de) * 1931-12-03 Fried Krupp Grusonwerk Akt Ges Walzenpresse zum Herstellen von Formlingen
FR809031A (fr) * 1935-09-21 1937-02-22 Hydro Electr Aiguebelette Bour Procédé de pastillage
FR820202A (fr) * 1936-03-06 1937-11-06 Presse rotative pour briquettes
US2874604A (en) * 1956-03-22 1959-02-24 Prb Nv Apparatus for molding plastic explosive materials
FR1316298A (fr) * 1962-02-27 1963-01-25 Machine tournante pour le moulage continu de briques, et particulièrement de tuiles

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE114473C (fr) *
DE114472C (fr) *
DE539923C (de) * 1931-12-03 Fried Krupp Grusonwerk Akt Ges Walzenpresse zum Herstellen von Formlingen
FR809031A (fr) * 1935-09-21 1937-02-22 Hydro Electr Aiguebelette Bour Procédé de pastillage
FR820202A (fr) * 1936-03-06 1937-11-06 Presse rotative pour briquettes
US2874604A (en) * 1956-03-22 1959-02-24 Prb Nv Apparatus for molding plastic explosive materials
FR1316298A (fr) * 1962-02-27 1963-01-25 Machine tournante pour le moulage continu de briques, et particulièrement de tuiles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238506A (en) * 1989-12-01 1991-06-05 Apv Corp Ltd Improvements in or relating to apparatus for crimping
CN107738337A (zh) * 2017-11-06 2018-02-27 广西师范大学 一种硅酸钙板用辊压机

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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17P Request for examination filed

Effective date: 19830312

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19840507