EP3436216A1 - Cooling and suction system for heads for polishing ceramic manufactured items or natural stones - Google Patents

Cooling and suction system for heads for polishing ceramic manufactured items or natural stones

Info

Publication number
EP3436216A1
EP3436216A1 EP17726677.2A EP17726677A EP3436216A1 EP 3436216 A1 EP3436216 A1 EP 3436216A1 EP 17726677 A EP17726677 A EP 17726677A EP 3436216 A1 EP3436216 A1 EP 3436216A1
Authority
EP
European Patent Office
Prior art keywords
cooling
suction
polishing
suction means
natural stones
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
EP17726677.2A
Other languages
German (de)
French (fr)
Other versions
EP3436216B1 (en
Inventor
Mario Corradini
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.)
Ancora SpA
Original Assignee
Ancora SpA
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 Ancora SpA filed Critical Ancora SpA
Publication of EP3436216A1 publication Critical patent/EP3436216A1/en
Application granted granted Critical
Publication of EP3436216B1 publication Critical patent/EP3436216B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B24B41/047—Grinding heads for working on plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain

Definitions

  • the present invention refers to a cooling and suction system for polishing heads for polishing, for example through smoothing, lapping or the like, ceramic manufactured items or natural stones.
  • Water cooling systems are known which provide for the introduction of the cooling liquid by means of a feed duct that traverses the main body until it reaches the tools.
  • the body has a central opening for the outflow of the water in proximity to the work tools.
  • Another problem of the known air cooling devices for the polishing tool is given by the dispersion of dust and residues of the polishing in the environment, since the air blown in the smoothing zone lifts and disperses the dust and residues of the polishing.
  • EP 1832386 Al teaches a solution according to the state of the art.
  • the main object of the present invention is that of improving the state of the art in the field of cooling plants for polishing heads for polishing ceramic manufactured items or natural stones.
  • one object of the present invention is to provide a cooling and suction system for the polishing heads which allows the heads to work with an optimal cooling.
  • Another object of the present invention is to provide a cooling and suction system for polishing heads which allows effectively freeing and recovering the dusts and residues from the polishing zone, preventing dispersions in the environment.
  • Another object of the present invention is to provide a cooling and suction system for polishing heads which is easy to achieve, and at competitive costs.
  • figure 1 is a top perspective view of a polishing machine provided with a cooling and suction system according to the present invention
  • figure 2 illustrates a perspective view of an enlarged and sectioned detail of the polishing machine pursuant to figure 1 ;
  • figure 3 illustrates a cross section of the polishing machine pursuant to the preceding figures
  • figure 4 illustrates, in a schematic plan view, a polishing head with the relative cooling and suction system which form part of the polishing machine pursuant to the preceding figures;
  • FIGS 5 and 6 illustrate, in perspective view, portions of the polishing machine pursuant to the preceding figures with the heads provided with cooling and suction system according to the present invention.
  • FIGS 7 and 8 illustrate, in perspective view, two embodiments of details pursuant to figure 6.
  • a polishing machine for polishing ceramic manufactured items, natural stones or the like is indicated overall with the reference number 1.
  • the machine 1 comprises a support frame 2 which is associated with an abutment surface for ceramic manufactured items 8, or natural stones, movable along an advancement direction identified with the arrow 3 on an abutment surface 4.
  • the machine 1 comprises a plurality of heads 5 for polishing, for example through smoothing or lapping, ceramic manufactured items 8, or natural stones, the heads 5 are arranged one after the other along the advancement direction 3 and above the abutment surface 4.
  • the heads 5 are driven by motor means 12 and are supported by at least two beams 6 oscillating according to a transverse direction 7.
  • Each polishing head 5 comprises a main body 9 and at least one tool 10 for working the ceramic manufactured items or natural stones associated with the main body 9.
  • Each head 5 can comprise a plurality of tools 10 associated on the lower part with the body 9 due to the interposition of a support element 11.
  • the cooling and suction system for the polishing heads 5 comprises first bell-shaped cooling and suction means 13 arranged around each polishing head 5, second perimeter cooling and suction means 14 arranged around the perimeter of the work zone, i.e. on the sides of the ceramic manufactured items 8, or of the natural stones, and between one polishing head 5 and the next.
  • Third cooling means 15 are also provided, arranged at the center and/or within each polishing head 5. It must be observed that the first cooling and suction means 13 and the third cooling means 15, arranged around, at the center and/or within each polishing head 5, are movable with the oscillating movement of each polishing head 5, hence the aforesaid first and third cooling means are always very close to the work zone where the heat is developed and the dust generated.
  • the first bell-shaped cooling and suction means 13 comprise a first opening 16 for dust suction, arranged in proximity to and around the tools 10.
  • the first opening 16 can have ring shape, arranged concentrically with respect to the rotation axis of the polishing head 5 and be divided into several portions.
  • the first ring-shaped opening 16 is divided into two portions 17 and 18, even if there can be any number of the aforesaid portions, starting from one.
  • the first bell-shaped cooling and suction means 13 also comprise a second opening 19 for sending a pressurized gas, for example air, for cooling the tools 10 and the work surface of the ceramic manufactured items 8, or of the natural stones, also this second opening 19 is situated in proximity to and around the tools 10.
  • the second opening 19 can be ring-shaped and be arranged around the first opening 16.
  • the second opening 19 is arranged concentrically with respect to the rotation axis of the polishing head 5 and divided into several portions.
  • the second opening 19 is divided into two portions 20 and 21, even if there can be any number of the aforesaid portions, starting from one.
  • the third cooling means 15 arranged at the center and/or within each polishing head 5 are provided for sending a pressurized gas, for example air, for cooling the tools 10 and the work surface of the ceramic manufactured items 8, or of the natural stones, with a cooling function similar to that of the second opening 19.
  • a pressurized gas for example air
  • the pressurized gas outlet end of the second opening 19 can have elongated slot shape or it can have a series of adjacent holes, similar to the outlet ends, illustrated in figures 7 and 8, of analogous cooling openings which make up part of the second perimeter cooling and suction means 14 and which will be better described hereinbelow.
  • the second opening 19 is oriented in a manner so as to send pressurized cooling gas jets into the work zone of the ceramic manufactured items, while the first suction opening 16 has a wide suction surface such to effectively suction the cooling gases and work dusts, lifted by the cooling gases, coming from both the third cooling means 15 in the center and/or within each polishing head 5, and coming from the second opening 19 arranged outside the first cooling and suction means 13.
  • arrows 22 indicate a first part of cooling gases and work dusts, which come from the center of each polishing head 5 and go towards the first suction opening 16
  • arrows 23 indicate a second part of cooling gases and work dusts, which come from the second opening 19 and go towards the first suction opening 16
  • arrows 24 (figure 5) indicate the cooling gases and the work dusts suctioned from the first opening 16.
  • the first bell-shaped cooling means 13 and the third cooling means 15 in the center and/or within each polishing head 5 are situated very close to the work zone and determine an effective cooling of the tools 10 and of the ceramic manufactured items 8, or of the natural stones.
  • cooling gases can be brought to low temperature by means of a suitable refrigerator, also termed chiller.
  • the work dusts lifted by the cooling gases are sent to a centralized suction and filtration plant, in which the dusts are collected. Neither of these plants form part of the present invention and thus they are neither illustrated nor described in more detail hereinbelow.
  • the second perimeter cooling and suction means 14 comprise front and rear blowing means 25 and lateral suction means 26.
  • the blowing means 25 send cooling gases, indicated with arrows 28 (figures 5 and 6), onto the ceramic manufactured items 8, or onto the natural stones, and these cooling gases together with the work dusts are then suctioned by the lateral suction means 26 and also possibly by the first ring-shaped opening 16 adjacent to the polishing head 5.
  • the blowing means 25 allow delimiting the dispersion of the dusts between one polishing head 5 and the next. Indeed, the cooling gases 28 which exit from the blowing means 25, which are arranged at the front and rear for the entire length of the advancement conveyor belt, create a barrier that prevents the dusts from passing from a polishing zone to another zone.
  • the dusts that are generated with the coarse grain tools also have larger grain size than the dusts generated with the finer grain tools, and it is essential that the dusts with larger grain size do not enter into the zones where the tools with finer grain size are used, since they could scratch the parts that are already polished.
  • the gas barrier generated by the blowing means 25 serves to eliminate this drawback.
  • the blowing means 25 are arranged tilted with a blowing direction opposite the advancement direction 3 of the ceramic manufactured items 8, or of the natural stones.
  • the dusts are confined and sent back towards the polishing zones with larger grain size, and towards the suction means 26 and the opening 16 which then provide for suctioning the dusts.
  • the tilt angle of the blowing means 25 is comprised between 85° and 45° with respect to the work plane of the ceramic manufactured items 8, or of the natural stones.
  • blowing means 25 comprise a series of holes 32 adjacent to each other for the outflow of the cooling gases 28, while in figure 8 another embodiment is illustrated comprising slots 33 for the outflow of cooling gas jets 28.
  • the holes 32 and the slots 33 have an optimized shape in order to obtain powerful and concentrated cooling gas jets 28 that determine an effective barrier for the dusts that are generated in the polishing working.
  • the cooling gases emitted by the blowing means 25 can be brought to low temperature by means of a suitable refrigerator plant.
  • the lateral suction means 26 are situated which essentially comprise one or two tanks 27 that are arranged on at least one of the sides, or on both sides, of the polishing zone where each head 5 operates.
  • Each tank 27 comprises an elongated slit 29 which is situated at about the height of the work surface of the ceramic manufactured items 8, or of the natural stones, thus facilitating an effective suction of the dusts generated by the working of the tools 10.
  • a series of slots or a series of holes can be provided (not illustrated).
  • the tanks 27 are connected by means of a series of tubes 30 to a suction manifold 31, which has an increasing section, see in particular figures 1 and 2, in a manner so as to be adapted to the suction flow rate that increases according to the advancement direction 3.
  • the work dusts suctioned by the means 26 are sent to a centralized suction and filtration plant in which the dusts are collected.
  • the cooling and suction system object of the present invention, operates in the following manner.
  • the first cooling and suction means 13 send a ring-shaped cooling gas jet 23 on the tools 10 and on the polishing zone of the ceramic manufactured items 8, or natural stones.
  • the jet 23 is substantially ring-shaped and is oriented towards the rotation center of the polishing head 5.
  • the first cooling and suction means 13 and the third cooling means 15 are very close to the work zone and provide an effective cooling and suction in the work zone; it should be observed that these means 13 and 15 also follow the oscillating movements of the polishing head 5.
  • the second cooling and suction means 14 are fixed and are situated more distant from the polishing head 5 and in perimeter position with respect to the ceramic manufactured items 8, or natural stones. These second cooling and suction means 14 allow delimiting the dusts of different grain size between one polishing head 5 and the next, providing a further cooling on the work surface of the ceramic manufactured items 8, or natural stones; also provided is a lateral suction for the dusts in order to limit the dispersion in the environment.
  • the cooling gases can comprise only air taken from the environment, that is filtered, pressurized and with a humidity level that is optimized for obtaining an effective cooling without mixing the dusts generated during working, and possibly cooled, or the cooling gases can comprise other inert and/or noble gases, for example neon, argon, krypton, xenon, nitrogen, etcetera, or mixtures of these inert and/or noble gases with each other or with the addition of air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

A cooling and suction system for polishing heads (5) for polishing, for example by smoothing, lapping or the like, ceramic manufactured items (8) or natural stones, comprises at least one polishing head (5), provided with a plurality of tools (10), and first cooling and suction devices (13) arranged around each polishing head (5), second cooling and suction devices (14) arranged around the perimeter of the work zone of the ceramic manufactured items (8), or of the natural stones, and third cooling devices (15) arranged at the center and/or within each polishing head (5).

Description

TECHNICAL FIELD OF THE INVENTION
The present invention refers to a cooling and suction system for polishing heads for polishing, for example through smoothing, lapping or the like, ceramic manufactured items or natural stones.
STATE OF THE ART
With particular reference to the ceramic industry field, for producing manufactured items such as tiles, plates or bricks, or natural stones, it is known to carry out working, such as full smoothing or lapping, in order to improve the surface finish thereof.
These work operations are generally executed by means of machines which provide for the use of specific work heads comprising a main body that can be rotated around a relative axis and supporting a plurality of tools adapted for working manufactured items or natural stones.
In particular, the strong friction generated by the action of each tool on the manufactured item or on the natural stone leads to an overheating of the work tool itself, so as to render necessary the cooling thereof.
Water cooling systems are known which provide for the introduction of the cooling liquid by means of a feed duct that traverses the main body until it reaches the tools.
In detail, the body has a central opening for the outflow of the water in proximity to the work tools.
It is easy to understand that the use of water for cooling the work tools causes a non-negligible energy and resource consumption.
Another drawback is tied to the need to clean the cooling water and remove the relative muds, which involves considerable bureaucratic difficulties and management costs.
It was therefore proposed to substitute the water cooling with an air cooling, and air cooling devices for the tool are known from documents GB686260A, DE834518C, EP1832386B1 and WO-2001/70458A1 , for example.
Nevertheless, even the solutions described in these documents have not proven satisfactory due to the lower cooling capacity of air with respect to water, so that the tools and the manufactured items or the natural stones subjected to polishing were not sufficiently cooled.
Another problem of the known air cooling devices for the polishing tool is given by the dispersion of dust and residues of the polishing in the environment, since the air blown in the smoothing zone lifts and disperses the dust and residues of the polishing.
There is therefore the need to improve the technique of dry smoothing and/or lapping of the manufactured items such as tiles, plates or bricks, or of natural stones.
EP 1832386 Al teaches a solution according to the state of the art.
OBJECTS OF THE INVENTION
Therefore, the main object of the present invention is that of improving the state of the art in the field of cooling plants for polishing heads for polishing ceramic manufactured items or natural stones.
In the scope of such task, one object of the present invention is to provide a cooling and suction system for the polishing heads which allows the heads to work with an optimal cooling.
Another object of the present invention is to provide a cooling and suction system for polishing heads which allows effectively freeing and recovering the dusts and residues from the polishing zone, preventing dispersions in the environment.
Another object of the present invention is to provide a cooling and suction system for polishing heads which is easy to achieve, and at competitive costs.
These and still other objects of the present invention are attained by a cooling and suction system for polishing heads according to claim 1.
The dependent claims refer to preferred and advantageous embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
Further characteristics and advantages of the present invention will be more evident from the detailed description of a non-exclusive embodiment of a cooling and suction system for polishing heads according to the present invention, given as a non-limiting example in the enclosed drawing tables in which:
figure 1 is a top perspective view of a polishing machine provided with a cooling and suction system according to the present invention;
figure 2 illustrates a perspective view of an enlarged and sectioned detail of the polishing machine pursuant to figure 1 ;
figure 3 illustrates a cross section of the polishing machine pursuant to the preceding figures;
figure 4 illustrates, in a schematic plan view, a polishing head with the relative cooling and suction system which form part of the polishing machine pursuant to the preceding figures;
figures 5 and 6 illustrate, in perspective view, portions of the polishing machine pursuant to the preceding figures with the heads provided with cooling and suction system according to the present invention; and
figures 7 and 8 illustrate, in perspective view, two embodiments of details pursuant to figure 6.
EMBODIMENTS OF THE INVENTION
With reference to the enclosed figures, a polishing machine for polishing ceramic manufactured items, natural stones or the like is indicated overall with the reference number 1.
The machine 1 comprises a support frame 2 which is associated with an abutment surface for ceramic manufactured items 8, or natural stones, movable along an advancement direction identified with the arrow 3 on an abutment surface 4.
The machine 1 comprises a plurality of heads 5 for polishing, for example through smoothing or lapping, ceramic manufactured items 8, or natural stones, the heads 5 are arranged one after the other along the advancement direction 3 and above the abutment surface 4. The heads 5 are driven by motor means 12 and are supported by at least two beams 6 oscillating according to a transverse direction 7.
Each polishing head 5 comprises a main body 9 and at least one tool 10 for working the ceramic manufactured items or natural stones associated with the main body 9. Each head 5 can comprise a plurality of tools 10 associated on the lower part with the body 9 due to the interposition of a support element 11.
These parts of the machine 1 are not described in more detail since they do not form part of the present invention, while it must be considered that the cooling and suction system, object of the present invention, can also be applied to a single polishing head 5, or possibly to two polishing heads 5, as will be clearer from the following description.
According to the present invention, the cooling and suction system for the polishing heads 5 comprises first bell-shaped cooling and suction means 13 arranged around each polishing head 5, second perimeter cooling and suction means 14 arranged around the perimeter of the work zone, i.e. on the sides of the ceramic manufactured items 8, or of the natural stones, and between one polishing head 5 and the next. Third cooling means 15 are also provided, arranged at the center and/or within each polishing head 5. It must be observed that the first cooling and suction means 13 and the third cooling means 15, arranged around, at the center and/or within each polishing head 5, are movable with the oscillating movement of each polishing head 5, hence the aforesaid first and third cooling means are always very close to the work zone where the heat is developed and the dust generated. According to that illustrated in figures 4 and 5, the first bell-shaped cooling and suction means 13 comprise a first opening 16 for dust suction, arranged in proximity to and around the tools 10.
For example, the first opening 16 can have ring shape, arranged concentrically with respect to the rotation axis of the polishing head 5 and be divided into several portions. In the embodiment illustrated in figures 4 and 5, the first ring-shaped opening 16 is divided into two portions 17 and 18, even if there can be any number of the aforesaid portions, starting from one.
The first bell-shaped cooling and suction means 13 also comprise a second opening 19 for sending a pressurized gas, for example air, for cooling the tools 10 and the work surface of the ceramic manufactured items 8, or of the natural stones, also this second opening 19 is situated in proximity to and around the tools 10. For example, the second opening 19 can be ring-shaped and be arranged around the first opening 16. According to one version of the present invention, also the second opening 19 is arranged concentrically with respect to the rotation axis of the polishing head 5 and divided into several portions.
According to that illustrated in figures 4 and 5, the second opening 19 is divided into two portions 20 and 21, even if there can be any number of the aforesaid portions, starting from one.
The third cooling means 15 arranged at the center and/or within each polishing head 5 are provided for sending a pressurized gas, for example air, for cooling the tools 10 and the work surface of the ceramic manufactured items 8, or of the natural stones, with a cooling function similar to that of the second opening 19.
The pressurized gas outlet end of the second opening 19 can have elongated slot shape or it can have a series of adjacent holes, similar to the outlet ends, illustrated in figures 7 and 8, of analogous cooling openings which make up part of the second perimeter cooling and suction means 14 and which will be better described hereinbelow.
The second opening 19 is oriented in a manner so as to send pressurized cooling gas jets into the work zone of the ceramic manufactured items, while the first suction opening 16 has a wide suction surface such to effectively suction the cooling gases and work dusts, lifted by the cooling gases, coming from both the third cooling means 15 in the center and/or within each polishing head 5, and coming from the second opening 19 arranged outside the first cooling and suction means 13.
In this manner, a double movement of cooling gases and dusts is attained, according to a substantially radial direction.
In figure 4, arrows 22 indicate a first part of cooling gases and work dusts, which come from the center of each polishing head 5 and go towards the first suction opening 16, and arrows 23 indicate a second part of cooling gases and work dusts, which come from the second opening 19 and go towards the first suction opening 16, and arrows 24 (figure 5) indicate the cooling gases and the work dusts suctioned from the first opening 16.
The first bell-shaped cooling means 13 and the third cooling means 15 in the center and/or within each polishing head 5 are situated very close to the work zone and determine an effective cooling of the tools 10 and of the ceramic manufactured items 8, or of the natural stones.
In addition, the cooling gases can be brought to low temperature by means of a suitable refrigerator, also termed chiller. The work dusts lifted by the cooling gases are sent to a centralized suction and filtration plant, in which the dusts are collected. Neither of these plants form part of the present invention and thus they are neither illustrated nor described in more detail hereinbelow.
According to that illustrated in particular in figures 5-8 and in relation to the advancement direction 3 of the ceramic manufactured items 8, or of the natural stones, the second perimeter cooling and suction means 14 comprise front and rear blowing means 25 and lateral suction means 26.
The blowing means 25 send cooling gases, indicated with arrows 28 (figures 5 and 6), onto the ceramic manufactured items 8, or onto the natural stones, and these cooling gases together with the work dusts are then suctioned by the lateral suction means 26 and also possibly by the first ring-shaped opening 16 adjacent to the polishing head 5.
The blowing means 25 allow delimiting the dispersion of the dusts between one polishing head 5 and the next. Indeed, the cooling gases 28 which exit from the blowing means 25, which are arranged at the front and rear for the entire length of the advancement conveyor belt, create a barrier that prevents the dusts from passing from a polishing zone to another zone.
This is particularly important since the polishing occurs progressively, starting from coarse-grained tools before finally arriving at tools with increasingly fine grain. The dusts that are generated with the coarse grain tools also have larger grain size than the dusts generated with the finer grain tools, and it is essential that the dusts with larger grain size do not enter into the zones where the tools with finer grain size are used, since they could scratch the parts that are already polished. The gas barrier generated by the blowing means 25 serves to eliminate this drawback. In order to further increase the barrier effect, the blowing means 25 are arranged tilted with a blowing direction opposite the advancement direction 3 of the ceramic manufactured items 8, or of the natural stones.
In this manner, the dusts are confined and sent back towards the polishing zones with larger grain size, and towards the suction means 26 and the opening 16 which then provide for suctioning the dusts.
The tilt angle of the blowing means 25 is comprised between 85° and 45° with respect to the work plane of the ceramic manufactured items 8, or of the natural stones.
In figure 7, an embodiment of the blowing means 25 is illustrated; these comprise a series of holes 32 adjacent to each other for the outflow of the cooling gases 28, while in figure 8 another embodiment is illustrated comprising slots 33 for the outflow of cooling gas jets 28. In both cases, the holes 32 and the slots 33 have an optimized shape in order to obtain powerful and concentrated cooling gas jets 28 that determine an effective barrier for the dusts that are generated in the polishing working. Also in this case, the cooling gases emitted by the blowing means 25 can be brought to low temperature by means of a suitable refrigerator plant.
As stated above, on the sides of the conveyor belt where the polishing heads 5 operate and where the ceramic manufactured items 8 or the natural stones transit, the lateral suction means 26 are situated which essentially comprise one or two tanks 27 that are arranged on at least one of the sides, or on both sides, of the polishing zone where each head 5 operates.
Each tank 27 comprises an elongated slit 29 which is situated at about the height of the work surface of the ceramic manufactured items 8, or of the natural stones, thus facilitating an effective suction of the dusts generated by the working of the tools 10. As an alternative to the elongated slit 29, a series of slots or a series of holes can be provided (not illustrated).
The tanks 27 are connected by means of a series of tubes 30 to a suction manifold 31, which has an increasing section, see in particular figures 1 and 2, in a manner so as to be adapted to the suction flow rate that increases according to the advancement direction 3.
Also in this case, the work dusts suctioned by the means 26 are sent to a centralized suction and filtration plant in which the dusts are collected.
The cooling and suction system, object of the present invention, operates in the following manner.
During the working of the polishing head 5 on the ceramic manufactured items 8, or on the natural stones, the first cooling and suction means 13 send a ring-shaped cooling gas jet 23 on the tools 10 and on the polishing zone of the ceramic manufactured items 8, or natural stones. The jet 23 is substantially ring-shaped and is oriented towards the rotation center of the polishing head 5. There is also another cooling gas jet 22 coming from the third cooling means 15 in the center and/or within each polishing head 5. In addition, within and substantially concentric with respect to the ring-shaped cooling gas jet 23, there is a suction opening 16 that is also substantially ring-shaped, which suctions the dusts generated by the polishing. The first cooling and suction means 13 and the third cooling means 15 are very close to the work zone and provide an effective cooling and suction in the work zone; it should be observed that these means 13 and 15 also follow the oscillating movements of the polishing head 5.
The second cooling and suction means 14 are fixed and are situated more distant from the polishing head 5 and in perimeter position with respect to the ceramic manufactured items 8, or natural stones. These second cooling and suction means 14 allow delimiting the dusts of different grain size between one polishing head 5 and the next, providing a further cooling on the work surface of the ceramic manufactured items 8, or natural stones; also provided is a lateral suction for the dusts in order to limit the dispersion in the environment.
It must be observed that the cooling gases can comprise only air taken from the environment, that is filtered, pressurized and with a humidity level that is optimized for obtaining an effective cooling without mixing the dusts generated during working, and possibly cooled, or the cooling gases can comprise other inert and/or noble gases, for example neon, argon, krypton, xenon, nitrogen, etcetera, or mixtures of these inert and/or noble gases with each other or with the addition of air.
The invention thus conceived is susceptible to numerous modifications and variations, all falling within the scope of the inventive concept.
In addition, all details can be substituted with other technically equivalent elements. In practice, the materials used, as well as the contingent sizes and shapes, can be of any type in accordance with requirements, without departing from the protective scope of the following claims.

Claims

1. Cooling and suction system for polishing heads for polishing (5), for example by smoothing, lapping or the like, of ceramic manufactured items (8), or of natural stones, which advance according to a given advancement direction (3), comprising at least one polishing head (5), rotating around one substantially vertical rotation axis and being provided with a plurality of tools (10), and with cooling and suction means (13, 14, 15) in order to cool work zones and suction dusts generated by the polishing process, characterized in that it comprises first cooling and suction means (13) arranged around each polishing head (5), second cooling and suction means (14) arranged around the perimeter of the work zone of the ceramic manufactured items (8), or of the natural stones, and third cooling means (15) arranged in the center and/or inside each polishing head (5).
2. System according to claim 1, wherein said first cooling and suction means (13) comprise a first opening (16) for dust suction, arranged in proximity and around the tools (10).
3. System according to claim 2, wherein said first opening (16) is ring-shaped, and it is positioned concentrically with respect to the rotation axis of the polishing head (5).
4. System according to any one of the preceding claims, wherein said first cooling and suction means (13) comprise a second opening (19) for sending a gas for cooling the tools (10) and the work surface of the ceramic manufactured items (8), or of the natural stones, said second opening (19) being located in proximity and around said tools (10).
5. System according to claim 4, wherein said second opening (19) is ring- shaped, and it is positioned concentrically with respect to the rotation axis of the polishing head (5).
6. System according to claim 4 or 5, wherein said first cooling and suction means (13) are bell-shaped and wherein said second opening (19) is oriented in such a way to send cooling gas jets (23) towards the work zone of the ceramic manufactured items (8), or of the natural stones.
7. System according to any one of the preceding claims, wherein said second cooling and suction means (14) comprise front and rear blowing means (25).
8. System according to any one of the preceding claims, wherein said second cooling and suction means (14) comprise lateral suction means (26).
9. System according to claim 7 or 8, wherein said front and rear blowing means (25) have a tilt angle between 85° and 45° with respect to the work plane of the ceramic manufactured items (8), or of the natural stones.
10. System according to claim 9, wherein said front and rear blowing means (25) comprise a plurality of holes (32) adjacent to each other, or slots (33) adjacent to each other for the release of cooling gas jets (28), said holes (32) or said slots (33) having a shape optimized in order to obtain powerful and concentrated cooling gas jets (28) such as to create an effective barrier against the dusts generated in the polishing process.
1 1. System according to any one of the claims from 8 to 10, wherein said lateral suction means (26) comprise essentially one or two tanks (27) arranged on at least one of the sides, or on both sides, of the polishing zone in which each head operates.
12. System according to claim 11, wherein each tank (27) comprises an elongated slit (29), or a series of holes, which is approximately at the height of the work surface of the ceramic manufactured items or of natural stones (8), in this way providing an effective suction of the dusts generated by the work of the tools (10).
13. System according to claim 11 or 12, wherein each tank (27) is connected to a suction manifold (31), which manifold has an increasing cross-sectional area in order to adapt to the suction flow rate which increases in said advancement direction (3) of the ceramic manufactured items (8), or of the natural stones.
14. System according to any one of the preceding claims, wherein said third cooling means (15) are arranged in the center and/or inside each polishing head (5).
15. System according to any one of the preceding claims, wherein said first cooling and suction means (13), said second cooling and suction means (14) and said third cooling means (15) are connected to a refrigerator system which determines a lowering of the temperature of the cooling gases and/or controls the humidity level present in said gases.
16. System according to any one of the preceding claims, wherein said first cooling and suction means (13) and said second cooling and suction means (14) are connected to a centralized suction and filtration system in which the work dusts are collected.
17. System according to any one of the preceding claims, wherein said cooling gases comprise air, or inert and/or noble gases, for example neon, argon, krypton, xenon, nitrogen, etc., or mixtures of these inert and/or noble gases, alone or with the addition of air.
EP17726677.2A 2016-04-01 2017-03-30 Polishing machine with cooling and suction system for heads for polishing ceramic manufactured items or natural stones Active EP3436216B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUA2016A002251A ITUA20162251A1 (en) 2016-04-01 2016-04-01 COOLING AND SUCTION SYSTEM FOR POLISHING HEADS OF CERAMIC PRODUCTS OR NATURAL STONES
PCT/IB2017/051829 WO2017168366A1 (en) 2016-04-01 2017-03-30 Cooling and suction system for heads for polishing ceramic manufactured items or natural stones

Publications (2)

Publication Number Publication Date
EP3436216A1 true EP3436216A1 (en) 2019-02-06
EP3436216B1 EP3436216B1 (en) 2020-02-12

Family

ID=56296997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17726677.2A Active EP3436216B1 (en) 2016-04-01 2017-03-30 Polishing machine with cooling and suction system for heads for polishing ceramic manufactured items or natural stones

Country Status (6)

Country Link
EP (1) EP3436216B1 (en)
CN (1) CN109070310A (en)
BR (1) BR112018069672A2 (en)
ES (1) ES2790892T3 (en)
IT (1) ITUA20162251A1 (en)
WO (1) WO2017168366A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2907735T3 (en) * 2017-12-21 2022-04-26 Ancora Spa Machine for dry processing of tiles or slabs
IT201900005792A1 (en) 2019-04-15 2020-10-15 Ancora Spa HEAD OF TREATMENT OF LASTRIFORM ELEMENTS
IT201900016721A1 (en) * 2019-09-19 2021-03-19 Simec Spa HEAD FOR A MACHINE TOOL FOR POLISHING AND / OR CALIBRATING SLABS IN STONE AND / OR CERAMIC MATERIAL
IT201900017537A1 (en) 2019-09-30 2021-03-30 Ancora Spa PLANT FOR PROCESSING CERAMIC PRODUCTS, NATURAL STONES, OR SIMILAR
IT201900018914A1 (en) 2019-10-15 2021-04-15 Ancora Spa PLANT FOR PROCESSING CERAMIC OR NATURAL STONE PRODUCTS OR OBJECTS
IT202000008257A1 (en) * 2020-04-17 2021-10-17 Siti B & T Group Spa GROUP AND PROCEDURE FOR POLISHING CERAMIC OR NATURAL STONES
CN118219151B (en) * 2024-05-23 2024-07-23 阳城福龙陶瓷有限公司 Ceramic plate surface polishing device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4216630A (en) * 1977-08-25 1980-08-12 The Aro Corporation Grinder apparatus with pollution control fluid dispensing means
JPS607953U (en) * 1983-06-27 1985-01-19 リョービ株式会社 sander dust collector
JPH11129159A (en) * 1997-10-30 1999-05-18 Nikken Kogyo:Kk Surface grinding device
US5993305A (en) * 1998-10-31 1999-11-30 Chu; Eric Air-drafting dust remover for power sander
IT1315622B1 (en) * 2000-03-21 2003-03-14 Nuove Officine Ancora S P A SANDING SYSTEM FOR CERAMIC ARTICLES.
RU2307729C1 (en) * 2005-12-26 2007-10-10 Татьяна Николаевна Иванова Grinding tool with vortex cooling
DE102006010975B4 (en) * 2006-03-09 2008-04-03 Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co. Kg Grinding wheel for machining objects, in particular natural or artificial stones
CN201776673U (en) * 2010-04-21 2011-03-30 苏州宝时得电动工具有限公司 Sander
CN102233532A (en) * 2010-04-21 2011-11-09 苏州宝时得电动工具有限公司 Sander
JP5563928B2 (en) * 2010-08-25 2014-07-30 リコーマイクロエレクトロニクス株式会社 Cutting method and cutting apparatus
CN102430981A (en) * 2011-12-09 2012-05-02 傅月华 Self-dust absorption type polishing machine
WO2016042464A1 (en) * 2014-09-16 2016-03-24 Ancora S.P.A. Machinery for the machining of ceramic articles
CN104802041A (en) * 2015-04-23 2015-07-29 广东一鼎科技有限公司 Polishing method
CN104875098A (en) * 2015-07-02 2015-09-02 天津舜龙顺昌石材销售有限公司 Oscillation-mark-free and environment-friendly stone line production device

Also Published As

Publication number Publication date
EP3436216B1 (en) 2020-02-12
ES2790892T3 (en) 2020-10-29
ITUA20162251A1 (en) 2017-10-01
BR112018069672A2 (en) 2019-02-05
CN109070310A (en) 2018-12-21
WO2017168366A1 (en) 2017-10-05

Similar Documents

Publication Publication Date Title
EP3436216B1 (en) Polishing machine with cooling and suction system for heads for polishing ceramic manufactured items or natural stones
KR102182910B1 (en) Wafer edge polishing apparatus and method
JP6329728B2 (en) Grinding equipment
KR20130052990A (en) Apparatus for grinding a surface of a tile
WO2017081617A1 (en) Head for polishing ceramic products or natural stones
US20180117726A1 (en) Head for polishing ceramic items or natural stones
EP3727747B1 (en) Machine for dry processing tiles or slabs
CN108788981A (en) A kind of two-way polishing glass device
KR20060028225A (en) Cutting chip collecting apparatus system for oversize machine tool
JP6570964B2 (en) Cylindrical bellows cover
JP2016078220A (en) Surface plate carrying carriage
JP2002224929A (en) Device for cutting plate-like workpiece
JP2006035347A (en) Polishing device and polishing method
EP1625914B1 (en) Satin finishing system with flap wheels for shaped tubes
EP3566840B1 (en) Operating head for machines for the processing of components made of wood or the like
CN207480312U (en) Heavy water mill sander
KR20050014028A (en) Waterjet cutter with a grinder for securing a competitive price and improving work environment
KR20010029637A (en) Exchange device of polishing pad and exchange method of the same
CN211439600U (en) Multifunctional sand blasting machine
CN218397342U (en) Novel edge grinding machine
CN211517095U (en) Stone surface polishing equipment
CN103909451B (en) For edge polisher and the application thereof of shaped piece
JP5517722B2 (en) Bottle body rotation mechanism of abrasive spray processing equipment
CN209850347U (en) Digit control machine tool is with base fixing device convenient to heat dissipation
CN108067684A (en) Saw blade grinding device

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

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

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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

Free format text: ORIGINAL CODE: 0009012

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180912

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190822

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1231464

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200215

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602017011702

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200512

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200512

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200612

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200513

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602017011702

Country of ref document: DE

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2790892

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20201029

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200705

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1231464

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200330

26N No opposition filed

Effective date: 20201113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201001

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200331

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200330

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200412

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200331

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20210330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200212

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20220329

Year of fee payment: 6

Ref country code: ES

Payment date: 20220401

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230330

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20240507

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230331