EP1870201A1 - Automatische Schneidmaschine für Steinstreifen, Steinplatten oder plattenförmigen Steinelementen - Google Patents

Automatische Schneidmaschine für Steinstreifen, Steinplatten oder plattenförmigen Steinelementen Download PDF

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Publication number
EP1870201A1
EP1870201A1 EP07008850A EP07008850A EP1870201A1 EP 1870201 A1 EP1870201 A1 EP 1870201A1 EP 07008850 A EP07008850 A EP 07008850A EP 07008850 A EP07008850 A EP 07008850A EP 1870201 A1 EP1870201 A1 EP 1870201A1
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EP
European Patent Office
Prior art keywords
cutting
arms
head
plate
shaped elements
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Withdrawn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
EP07008850A
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English (en)
French (fr)
Inventor
Luigi Pedrini
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
Publication of EP1870201A1 publication Critical patent/EP1870201A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/048—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with a plurality of saw blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/043—Gantry type sawing machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
    • B28D7/04—Accessories specially adapted for use with machines or devices of the preceding groups for supporting or holding work or conveying or discharging work
    • B28D7/043—Accessories specially adapted for use with machines or devices of the preceding groups for supporting or holding work or conveying or discharging work the supporting or holding device being angularly adjustable

Definitions

  • the present invention relates to an automatic cross cutting machine for strips, slabs or plate-shaped elements of natural stone, that is a machine for precision cutting of the edges of the plate, slab, strip or tile, i.e. to cross cut, during the cutting process of the above, in automatic and multiple way with high precision, groups of plates, slabs, strips or tiles, when they are aligned on at least one gauge side, perpendicular to the direction of cutting.
  • the cross cutting machines of the prior art are provided with multiple heads which cut a plate, slab or strip with one size prevailing on another in order to divide it into plate-shaped elements having a given size and to make three of the four sides of the element, with the two corners included, precise and perpendicular to each other.
  • the heads In cutting a plate, strip or long slab, the heads operate after it has been positioned in the work area and one of its sides has been placed against an alignment gauge, generally on the opposite side in the cutting direction of the discs.
  • Cutting is carried out with a single or double disc, in the case that two near ends of two plates, slabs or strips are to be cross cut.
  • the prior art alignment devices acting on the gauge side, generally the side facing the operator, do not always ensure that cutting takes place exactly in a perpendicular direction between said gauge element and the cutting direction of the heads.
  • the plate-shaped elements through compaction effect of the row arriving on the conveyor belt, are positioned with only little space between their facing edges in the forward direction of the underlying belt. Said forward direction is close to the alignment gauge direction but, due to the previous working operations, the plate-shaped element may have edges which are not square-cut, i.e. perpendicular to the alignment gauge side; in this way, the compaction action of the conveyor belt incorrectly aligns the short and light element, preventing correct positioning of the longitudinal edge for alignment to the gauge.
  • the technical problem underlying the present invention is to provide a machine for automatic cross cutting of short and light plate-shaped elements, with high production and which is easy to set up upon change of their shape.
  • a further aim of the invention is to provide an alignment device for plates, slabs, strips and tiles, when they are transported by a conveyor belt to the working area of the machine and said device is easy to mount also on existing machines.
  • an automatic cross cutting machine for strips, slabs or plate-shaped elements of natural stone comprising: several cutting heads transversal to the forward direction of the underlying conveyor belt; at least one or more of said heads being provided with a double adjacent cutting disc; said heads being mobile, on a single beam longitudinal along the feed of the cutting, in a transversal direction to said conveyor belt; a gauge and alignment element longitudinal to the direction of the conveyor belt and perpendicular to the cutting direction of the discs mounted on said heads, of the strips, slabs or plate-shaped elements; characterized in that it provides, associated to at least one head, or at least to said at least one head provided with a double adjacent cutting disc, a device for aligning the strips, slabs or plate-shaped elements by pushing the two plate-shaped elements, which are positioned near said head and intended to be cut on the facing edges by said double cutting disc; the alignment device comprising a double feeler each placed on the sides of the double cutting disc, an elastic pressure element on the edge of the plate-shaped
  • the cross cutting machine is further provided with the transversal cutting heads each provided with a double cutting disc, coupled and spaced apart at the required distance on the same mandrel, except for the first and last head of the machine, in a longitudinal direction to said conveyor belt, provided instead with a single disc; each head being provided with an alignment device; the two end heads optionally having he same configuration as the central heads and being provided with the same alignment device.
  • the cross cutting machine is further provided with the alignment device comprising two arms, pivoted in the area above the cutting discs, each provided with a feeler, and an elastic element placed between one end of said arms and the structure of the cutting head.
  • the cross cutting machine is further provided with the programmed yielding element consisting of a pneumatic cylinder acting on the two arms, pivoted in the area above the cutting discs, each provided with a feeler, and wherein the elastic element placed between one end of said arms and the structure of the cutting head is housed directly on the shaft of said cylinder.
  • the programmed yielding element consisting of a pneumatic cylinder acting on the two arms, pivoted in the area above the cutting discs, each provided with a feeler, and wherein the elastic element placed between one end of said arms and the structure of the cutting head is housed directly on the shaft of said cylinder.
  • the alignment device of the automatic cross cutting machine for strips, slabs or plate-shaped elements of natural stone can be mounted on a single head of transversal cutting or cross cutting machines with a double cutting disc; characterized in that it has a double feeler each placed on the sides of the double cutting disc, an elastic pressure element on the edge of the plate-shaped elements and at least one programmed yielding element at the end of the initial alignment run and at the beginning of the cutting; further provided with a supporting element, which can be mounted on said cutting head, to which the alignment device is connected.
  • the programmed yielding element consists of a pneumatic cylinder, acting on two advantageously arched arms, pivoted in the area above the cutting discs, each provided with a feeler, flanking the casing of the cutting discs, and wherein the elastic element placed between one end of said arms and the structure of the cutting head is housed directly on the shaft of said cylinder.
  • the automatic cross cutting machine comprises a plurality of heads 1, longitudinally aligned above a conveyor belt 2 with single cutting heads 3 or coupled 4 on the same mandrel 5; cutting of the abutting edges 6 takes place perpendicularly to the longitudinal gauge edge of each plate-shaped element 8.
  • the head comprises transmission 9 of motion to the cutting discs by means of an electric motor 10; a geared motor group 11 adjusts the cutting discs as the shape of the work pieces changes.
  • Figure 1 also shows the alignment device 12 comprising the arched pushers 13, oscillating on a longitudinal pivot 14 through the action of a spring-loaded pneumatic piston 15; said device is advantageously supported to an plate M connected to the head 1.
  • the pushers flank the casing 16 of the cutting discs and terminate with feelers 17 in rigid material but which do not damage the longitudinal thrust edge of the plate-shaped element 8, towards the gauge edge 7; said arched pushers 13 are positioned during working against a retainer 18 fixed to the external structure of the motion transmission 9.
  • Figure 2 besides the housing 19 of the beam, not illustrated, longitudinal to the machine carrying the heads 1, also shows the piston 20 of the pneumatic cylinder 15 provided with an internal spring 21; the shaft 22 of the cylinder acts on the arched pushers 13 by means of the pivot 23, adjusting its position with respect to the longitudinal thrust edge when aligning the plate-shaped elements 8.
  • Figures from 4 to 8 illustrate the supporting metal structure 24 of the conveyor belt 2 and the longitudinal gauge 25, for aligning the edge 7 of each plate-shaped element 8, in the resting position detached from the row of elements 8, Figures 4 and 8, and in the engagement position against the edge 7 of said plate-shaped elements, Figures 5, 6 and 7.
  • the alignment device 12 during operation of the automatic cross cutting machine for the plate-shaped elements, operates as follows.
  • the row of plate-shaped elements 8 is carried forward on the conveyor belt until it reaches the retainer on the abutting edge 6 of the first element in the row, said retainer not illustrated in the Figure.
  • the continued movement of the conveyor belt 2 brings the transversal edges of each element 8 in contact with the edges of the previous and successive elements, so as to present a row of N-1 plate-shaped elements for cutting under the N heads which the machine is provided with.
  • the first and the Nth head can be provided with just one cutting disc 3, while the intermediary heads are advantageously provided with two cutting discs 4 mounted on the same mandrel 5.
  • the cross cutting method can now start since the position of the heads and the gauge, with respect to the elements 8, is illustrated in Figure 4.
  • the longitudinal alignment gauge 25 is brought forward into alignment position, defining the straight line on which the edges 7 of each plate-shaped element 8 must be aligned, independently of the original conformation and alignment of the edges 6, still imprecise during the previous work step; at the same time, the longitudinal beam pushes the heads 1 towards the longitudinal gauge 25, so that the feelers 17 of the arched arms 13, of each alignment device 12, push the elements 8 against said longitudinal gauge 25, aligning the edge 7 against the longitudinal gauge, as can be seen in Figure 5.
  • the cutting discs 3, 4 advance, as can be seen in Figure 7, until they reach the longitudinal gauge 25. Just before cutting terminates, Figure 8, so as to avoid contact between the cutting disc and the longitudinal gauge 25, the latter is withdrawn and cutting is completed using only the friction reaction of the plate-shaped element 8 on the conveyor belt 2. Once cutting is completed, the heads 1 are withdrawn and the conveyor belt can advance with a new group of strips, slabs or plate-shaped elements of natural stone to be cut by the machine.
  • the alignment device 12 can advantageously be mounted on cutting heads of existing machines since it can be applied to a head by means of the support plate M, obviously modifying its original operation cycle; i.e. integrating it with the operation of the longitudinal gauge 25 according to the position reached by the discs during cutting.
  • the spring 21 can be placed outside the pneumatic cylinder 15 or connected directly to the arched arms 13.
  • the pneumatic cylinder can be replaced with an elastic yielding leverage programmed with the angular rotation of said arched arms, during cutting progress, and brought back into position after the head returns to the machine bed for alignment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Adornments (AREA)
EP07008850A 2006-05-02 2007-05-02 Automatische Schneidmaschine für Steinstreifen, Steinplatten oder plattenförmigen Steinelementen Withdrawn EP1870201A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMO20060138 ITMO20060138A1 (it) 2006-05-02 2006-05-02 Macchina automatica di attestatura per filange, lastre od elementi piastriformi in pietra naturale.

Publications (1)

Publication Number Publication Date
EP1870201A1 true EP1870201A1 (de) 2007-12-26

Family

ID=38284005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07008850A Withdrawn EP1870201A1 (de) 2006-05-02 2007-05-02 Automatische Schneidmaschine für Steinstreifen, Steinplatten oder plattenförmigen Steinelementen

Country Status (2)

Country Link
EP (1) EP1870201A1 (de)
IT (1) ITMO20060138A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20100876A1 (it) * 2010-05-17 2011-11-18 Gmm S P A Macchina per la lavorazione di materiali in blocco o in lastra e metodo di lavorazione attuabile tramite tale macchina

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE344114A (de) *
FR1278873A (fr) 1961-01-13 1961-12-15 Perrot & Aubertin Ets Machine pour le débitage notamment de carreaux tels que carreaux de revêtement de sols ou de murs
US3840000A (en) * 1972-11-09 1974-10-08 E Bible Device for holding stones during cutting
EP0191455A1 (de) * 1985-02-11 1986-08-20 Steinbearbeitungs-Maschinenfabrik Carl Meyer GmbH & Co. KG Steinsäge zum Zerteilen von Steinplatten oder dergl.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE344114A (de) *
FR1278873A (fr) 1961-01-13 1961-12-15 Perrot & Aubertin Ets Machine pour le débitage notamment de carreaux tels que carreaux de revêtement de sols ou de murs
US3840000A (en) * 1972-11-09 1974-10-08 E Bible Device for holding stones during cutting
EP0191455A1 (de) * 1985-02-11 1986-08-20 Steinbearbeitungs-Maschinenfabrik Carl Meyer GmbH & Co. KG Steinsäge zum Zerteilen von Steinplatten oder dergl.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20100876A1 (it) * 2010-05-17 2011-11-18 Gmm S P A Macchina per la lavorazione di materiali in blocco o in lastra e metodo di lavorazione attuabile tramite tale macchina
WO2011144270A1 (en) * 2010-05-17 2011-11-24 Gmm S.P.A. Machine for machining materials in blocks or slabs and machining method to be actuated through such a machine
AU2011254981B2 (en) * 2010-05-17 2013-03-28 Gmm S.P.A. Machine for machining materials in blocks or slabs and machining method to be actuated through such a machine
CN103038012A (zh) * 2010-05-17 2013-04-10 Gmm股份公司 加工块或平板状材料的机器和通过该机器实施的加工方法
CN103038012B (zh) * 2010-05-17 2015-11-25 Gmm股份公司 加工块或平板状材料的机器和通过该机器实施的加工方法
US9409242B2 (en) 2010-05-17 2016-08-09 Gmm S.P.A. Machine for machining materials in blocks or slabs and machining method to be actuated through such a machine

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Publication number Publication date
ITMO20060138A1 (it) 2007-11-03

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