EP3875177A1 - Machine for applying glues or adhesives to fabrics or the like - Google Patents
Machine for applying glues or adhesives to fabrics or the like Download PDFInfo
- Publication number
- EP3875177A1 EP3875177A1 EP21155957.0A EP21155957A EP3875177A1 EP 3875177 A1 EP3875177 A1 EP 3875177A1 EP 21155957 A EP21155957 A EP 21155957A EP 3875177 A1 EP3875177 A1 EP 3875177A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jacket
- fabric
- machine
- machine according
- distribution roller
- 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- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0808—Details thereof, e.g. surface characteristics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
- B05C1/083—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets being passed between the coating roller and one or more backing rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0813—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
Definitions
- the present invention relates to a machine for applying glues or adhesives to fabrics or the like.
- the invention has applications, in particular, where it is necessary to apply: high-temperature adhesives (known in the sector as "hot-melt” adhesives), thermoplastic adhesives, or reactive adhesives.
- high-temperature adhesives known in the sector as "hot-melt” adhesives
- thermoplastic adhesives thermoplastic adhesives
- reactive adhesives reactive adhesives
- the fabric to be worked is made to pass between the distribution roller and the pressing roller, so that the distribution roller spreads a film of the adhesive that it carries on a face of this fabric.
- the machines comprise an adhesive distribution roller that presents a matrix of impressions on its surface, and a doctor, with a reservoir of adhesive, that fills the impressions with adhesive and cleans the remaining surface.
- the fabric that passes between the distribution roller and the pressing roller is subjected to a distribution of adhesive in points.
- the distribution roller is constituted by a cylindrical body made of carbon steel, which is hollow inside and which has an oil passage in its cavity which is heated with an armored electrical resistance.
- the aim of the present invention is to provide a machine for applying glues or adhesives to fabrics or the like which is capable of improving the known art in one or more of the above mentioned aspects.
- an object of the invention is to provide a machine that is adaptable to changes in production, rapidly and requiring the least physical effort possible from the operators.
- Another object of the invention is to facilitate operations to substitute the distribution roller.
- a further object of the present invention is to overcome the drawbacks of the background art in a manner that is alternative to any existing solutions.
- Another object of the invention is to provide a machine that is highly reliable, easy to implement and low cost.
- a machine for applying glues or adhesives to fabrics or the like which comprises a frame which supports:
- the machine according to the invention comprises a frame 11 which supports:
- Three portions can be identified in the machine 10, of which one is innermost, indicated with 50, in which the fabric is processed, the above mentioned rollers and means being present therein, and two external portions 51 and 52, on opposite sides of the internal portion 50, in which means for aiding the operation of the previously-mentioned components are boxed, which are described below.
- the distribution roller 12 comprises a body 16 with a tubular jacket 17 around the body 16.
- the body is coupled to the frame 11 with respect to which it rotates about the axis A, and the jacket 17 rotates integrally with the body 16 and can be removed from it.
- the jacket 17 is adapted to bear, on its outer surface, the glue to be deposited on the fabric.
- the body 16 preferably has a cylindrical shape. However, in other versions, not shown, the body 16, and hence also the jacket 17, can have a conical shape.
- the jacket 17 is preferably made of carbon steel, while the body 16 is preferably made of aluminum, especially heat-treated to ensure stability and resistance to wear.
- the body 16 is internally hollow and on the inner surface electric resistance heaters are distributed for transmitting heat to the body 16 itself and therefore to the jacket 17.
- the operating temperature at which the jacket 17 is used is preferably approximately 150°C.
- the jacket 17 has a tubular shape structure with a matrix of impressions 18 on its outer surface, which bear the glue to be deposited on the fabric.
- screw head 33 On the outer surface of the body 16, at one of its ends, there is a screw head 33 and at one end of the jacket 17 there is an indentation, obtained preferably by milling, with which it is arranged at the screw head 33.
- the screw head 33 is indicated in Figure 1 .
- a helical groove 47 which, when the jacket 17 is coupled with the body 16, acts as a coil for the passage of a cooling fluid, preferably air.
- Figure 1 and Figure 2 show the machine 10 in the same perspective view and during an operation to substitute the jacket 17.
- Figure 1 shows the jacket 17 mounted on the body 16
- Figure 2 shows the jacket 17 just removed or about to be mounted, in the external portion 51 of the machine.
- the body 16 When the machine 10 is inactive, for example for maintenance or to change the jacket 17, the body 16 is coupled in a cantilever fashion to the frame 11, where it is kept guided by bearings.
- the machine 10 comprises means for translating 19 the jacket 17 along the axis A coupled with the body 16 and uncoupled, which in turn comprise parallel rails 22, which can be extracted in a drawer-like fashion, with a carriage 20 adapted to move the jacket 17 into and out of the machine.
- the machine 10 according to the invention also comprises means for lifting 21 the rails 22 and the carriage 20.
- Figure 5 shows the carriage 20 completely extracted from the machine 10.
- the carriage 20 comprises idle wheels 23 which roll on the parallel rails 22.
- the wheels 23 support a structure for resting the jacket 17, constituted by two lateral shoulders 24 that contain the jacket 17 itself and, between these, two contoured pans 25, in the front part and in the rear part, contoured with an upward-facing concavity, for resting the jacket 17 (as shown in Figure 2 ).
- a handle 26 can be used.
- the lifting means 21 comprise a screw gear reducer 27 below the rails 22, to be actuated manually using an handwheel 28 with a handle.
- the reducer is indicated in Figure 1 .
- the rails 22, the carriage 20 and the reducer 27 are conveniently installed in the external portion 51, from which the rails 22 and the carriage 20 can be extracted from the machine 10 for substitution of the jacket 17.
- presence sensors 29 which detect the position of the carriage 20. These are installed at the rails 22: two of them 29a, 29b are installed in the external portion 51, and another one 29c is installed in the internal portion 50.
- the sensor 29a is adapted to detect the presence of the carriage 20 when this is fully extracted from the external portion 51, by detecting the presence of a notch on the carriage.
- the sensor 29b is adapted to detect the presence of the carriage 20 if it is lifted.
- the sensor 29c in the internal portion 50 is adapted to detect the presence of the carriage 20 in the internal portion 50 of the machine.
- the dosing means 15 comprise a doctor 30, preferably made of harmonic steel, which is provided with means for movement 31 toward or away from the distribution roller 12.
- the doctor 30 is indicated in Figure 4 .
- the sensor 29c that detects the presence of the carriage 20 in the internal portion 50 sends a signal to software controlling the machine that prevents the doctor 30 from approaching.
- the software allows the doctor 30 to approach the distribution roller 12.
- the means for movement 31 comprise two actuators, one per side of the machine, like the one shown in the view in Figure 3 , which are adapted to raise and lower a support 32 carrying the doctor 30, and two pneumatic pistons 46, one per side, which are adapted to rotate the support 32, which is hinged to the frame 11 about an axis parallel to the axis A.
- the translation and rotation of the support 32 determine the approach of the doctor 30 to the distribution roller 12, in a controlled manner as a function of the thickness of the jacket 17 mounted on the body 16.
- the support 32 also carries a reservoir for the glue, heated in order to maintain the glue at a (preferable) temperature of 150°C during use of the machine 10.
- Figure 4 shows a cross-section of the machine 10, during its use.
- the position of the pressing roller 14 is modified, in so doing calibrating the distance from the jacket 17 in order to ensure the right level of pressure.
- the fabric 13 is made to pass between the pressing roller 14 and the distribution roller 12.
- the pressing roller 14, which is conveniently rubberized, exerts a pressure on the surface of the jacket 17, causing the adhesion of the gluing points, which are in the matrix, on the fabric 13.
- the fabric 13 is brought into contact with the cooling roller 34 which crystallizes the gluing points.
- the jacket 17 is substituted for one with a different diameter and/or with a different matrix of impressions: this requires the cooling of the distribution roller 12, following which the jacket can be easily extracted on the carriage 20 toward the lateral external portion 51.
- the doctor 30 is moved away from the distribution roller 12, in the position shown in Figures 1 and 2 .
- the rails 22 with the carriage 20 are brought below the jacket 17, in the internal portion 50 of the machine.
- the jacket 17 on the supporting structure is then made to translate outside with the carriage 20 and with the rails 22.
- Another jacket 17 is positioned on the carriage 20, and this is made to translate vertically using the screw gear reducer 27, in order to obtain the centering of the new jacket 17 on the rotation axis A.
- the jacket 17 is then made to translate toward the innermost portion 50 so as to fit over the body 16, according to a single angular position defined by the screw head 33.
- the support 32 of the doctor 30 is made to translate and rotate using actuators 31 and pneumatic pistons 46, in order to bring the doctor 30 into contact with the jacket 17 of the distribution roller 12.
- the body 16 is heated using the adapted heating elements and the heat is then transmitted to the jacket 17.
- the thermal expansion coefficient of aluminum, of which the body 16 is made is approximately double that of the carbon steel of which the jacket 17 is made. This ensures that the expansion of the body 16 is greater than that of the jacket 17, thus creating a compression on the body and so ensuring the mechanical seal between the two and the transmission of temperature to the jacket 17, which is necessary in operating conditions.
- the cooling can be carried out with the air system, in order to obtain the shrinkage of the materials in the shortest possible time.
Landscapes
- Treatment Of Fiber Materials (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
A machine for applying glues or adhesives to fabrics or the like, which comprises a frame (11) which supports:
- a distribution roller (12) for distributing glue on the fabric (13) which rotates about an axis (A),
- a pressing roller (14) for pressing the fabric (13) against the distribution roller (12),
- dosing means (15) for dosing the glue on the distribution roller (12).
- a distribution roller (12) for distributing glue on the fabric (13) which rotates about an axis (A),
- a pressing roller (14) for pressing the fabric (13) against the distribution roller (12),
- dosing means (15) for dosing the glue on the distribution roller (12).
The distribution roller (12) comprises a body (16), which is coupled to the frame (11) and rotates about the axis (A), and a tubular jacket (17) around the body (16), which rotates integrally with it and can be removed from it. The jacket (17) is adapted to bear, on its outer surface, the glue to be deposited on the fabric (13).
Description
- The present invention relates to a machine for applying glues or adhesives to fabrics or the like.
- The invention has applications, in particular, where it is necessary to apply: high-temperature adhesives (known in the sector as "hot-melt" adhesives), thermoplastic adhesives, or reactive adhesives.
- Nowadays machines are known for spreading adhesive films on fabrics, which comprise a frame which supports:
- a roller for dosing adhesive, which rotates about a rotation axis, or a doctor,
- a distribution roller for distributing adhesive, which rotates about another axis,
- a pressing roller for pressing the fabric, membrane or the like, against the distribution roller, for spreading the adhesive film,
- means of bringing the dosing roller and the distribution roller against each other.
- The fabric to be worked is made to pass between the distribution roller and the pressing roller, so that the distribution roller spreads a film of the adhesive that it carries on a face of this fabric.
- However, the application of an adhesive film on a fabric prevents the transpiration of the fabric.
- Where the application of a fabric or of a membrane or the like on another fabric must not negate the breathability of the final product, the practice is widespread of adhesive bonding in a matrix of points.
- In such case, the machines comprise an adhesive distribution roller that presents a matrix of impressions on its surface, and a doctor, with a reservoir of adhesive, that fills the impressions with adhesive and cleans the remaining surface. In this manner the fabric that passes between the distribution roller and the pressing roller is subjected to a distribution of adhesive in points.
- These machines are not devoid of drawbacks.
- First of all, in changes of production, for example for a change of fabric, or for a different thickness of gluing points, rapid operations are needed to change the distribution roller, in order to limit downtimes.
- Furthermore, often such machines are used in production facilities employing workers who are for the most part female, for whom the operations to change a roller may be demanding.
- In the machines known nowadays, the distribution roller is constituted by a cylindrical body made of carbon steel, which is hollow inside and which has an oil passage in its cavity which is heated with an armored electrical resistance.
- In order to change the type of engraving or the basis weight of the glue, it is necessary to substitute the cylindrical body, the weight and encumbrance of which are such as to require the use of an overhead crane to lift it.
- The aim of the present invention is to provide a machine for applying glues or adhesives to fabrics or the like which is capable of improving the known art in one or more of the above mentioned aspects.
- Within this aim, an object of the invention is to provide a machine that is adaptable to changes in production, rapidly and requiring the least physical effort possible from the operators.
- Another object of the invention is to facilitate operations to substitute the distribution roller.
- A further object of the present invention is to overcome the drawbacks of the background art in a manner that is alternative to any existing solutions.
- Another object of the invention is to provide a machine that is highly reliable, easy to implement and low cost.
- This aim and these and other objects which will become better apparent hereinafter are achieved by a machine for applying glues or adhesives to fabrics or the like, which comprises a frame which supports:
- a distribution roller for distributing glue on the fabric which rotates about an axis,
- a pressing roller for pressing the fabric against said distribution roller,
- dosing means for dosing said glue on said distribution roller,
- Further characteristics and advantages of the invention will become better apparent from the description of a preferred, but not exclusive, embodiment of the machine according to the invention, which is illustrated by way of non-limiting example in the accompanying drawings wherein:
-
Figure 1 is a perspective view of the machine according to the invention, open on one side to show its internals; -
Figure 2 is a view similar toFigure 1 of the machine according to the invention, during substitution of the jacket; -
Figure 3 is a perspective view of the machine according to the invention, partially open on one side; -
Figure 4 is a cross-sectional side view of the machine according to the invention; -
Figure 5 shows the machine, in views similar toFigure 1 andFigure 2 , in a different configuration. - With reference to the figures, the machine according to the invention, generally designated by the
reference numeral 10, comprises aframe 11 which supports: - a
distribution roller 12 for distributing glue on thefabric 13 which rotates about an axis A, - a
pressing roller 14 for pressing thefabric 13 against thedistribution roller 12, - dosing means 15 for dosing the glue on the
distribution roller 12. - Three portions can be identified in the
machine 10, of which one is innermost, indicated with 50, in which the fabric is processed, the above mentioned rollers and means being present therein, and twoexternal portions internal portion 50, in which means for aiding the operation of the previously-mentioned components are boxed, which are described below. - In
Figures 1 ,2 ,3 and5 some walls of the box-like bodies have been removed, where the external portions are identified, in order to show the means for aiding. - The peculiarity of the invention lies in the fact that the
distribution roller 12 comprises abody 16 with atubular jacket 17 around thebody 16. In particular, the body is coupled to theframe 11 with respect to which it rotates about the axis A, and thejacket 17 rotates integrally with thebody 16 and can be removed from it. Furthermore, thejacket 17 is adapted to bear, on its outer surface, the glue to be deposited on the fabric. - The
body 16 preferably has a cylindrical shape. However, in other versions, not shown, thebody 16, and hence also thejacket 17, can have a conical shape. - The
jacket 17 is preferably made of carbon steel, while thebody 16 is preferably made of aluminum, especially heat-treated to ensure stability and resistance to wear. - The
body 16 is internally hollow and on the inner surface electric resistance heaters are distributed for transmitting heat to thebody 16 itself and therefore to thejacket 17. The operating temperature at which thejacket 17 is used is preferably approximately 150°C. - The
jacket 17 has a tubular shape structure with a matrix ofimpressions 18 on its outer surface, which bear the glue to be deposited on the fabric. - On the outer surface of the
body 16, at one of its ends, there is ascrew head 33 and at one end of thejacket 17 there is an indentation, obtained preferably by milling, with which it is arranged at thescrew head 33. Thescrew head 33 is indicated inFigure 1 . - On the outer surface of the
body 16 there is also ahelical groove 47 which, when thejacket 17 is coupled with thebody 16, acts as a coil for the passage of a cooling fluid, preferably air. -
Figure 1 andFigure 2 show themachine 10 in the same perspective view and during an operation to substitute thejacket 17. In particular,Figure 1 shows thejacket 17 mounted on thebody 16, whileFigure 2 shows thejacket 17 just removed or about to be mounted, in theexternal portion 51 of the machine. - When the
machine 10 is inactive, for example for maintenance or to change thejacket 17, thebody 16 is coupled in a cantilever fashion to theframe 11, where it is kept guided by bearings. - Advantageously, it is possible to substitute the
jacket 17 with adapted means: themachine 10 comprises means for translating 19 thejacket 17 along the axis A coupled with thebody 16 and uncoupled, which in turn compriseparallel rails 22, which can be extracted in a drawer-like fashion, with acarriage 20 adapted to move thejacket 17 into and out of the machine. Themachine 10 according to the invention also comprises means for lifting 21 therails 22 and thecarriage 20. -
Figure 5 shows thecarriage 20 completely extracted from themachine 10. - The
carriage 20 comprisesidle wheels 23 which roll on theparallel rails 22. Thewheels 23 support a structure for resting thejacket 17, constituted by twolateral shoulders 24 that contain thejacket 17 itself and, between these, two contouredpans 25, in the front part and in the rear part, contoured with an upward-facing concavity, for resting the jacket 17 (as shown inFigure 2 ). - To extract the
rails 22 with the carriage in the manner of a drawer, ahandle 26 can be used. - The lifting means 21 comprise a
screw gear reducer 27 below therails 22, to be actuated manually using anhandwheel 28 with a handle. The reducer is indicated inFigure 1 . - The
rails 22, thecarriage 20 and thereducer 27 are conveniently installed in theexternal portion 51, from which therails 22 and thecarriage 20 can be extracted from themachine 10 for substitution of thejacket 17. - There are also
presence sensors 29 which detect the position of thecarriage 20. These are installed at the rails 22: two of them 29a, 29b are installed in theexternal portion 51, and another one 29c is installed in theinternal portion 50. - The
sensor 29a is adapted to detect the presence of thecarriage 20 when this is fully extracted from theexternal portion 51, by detecting the presence of a notch on the carriage. - The
sensor 29b is adapted to detect the presence of thecarriage 20 if it is lifted. - The
sensor 29c in theinternal portion 50, indicated inFigure 5 , is adapted to detect the presence of thecarriage 20 in theinternal portion 50 of the machine. - The dosing means 15 comprise a
doctor 30, preferably made of harmonic steel, which is provided with means formovement 31 toward or away from thedistribution roller 12. Thedoctor 30 is indicated inFigure 4 . - The
sensor 29c that detects the presence of thecarriage 20 in theinternal portion 50 sends a signal to software controlling the machine that prevents thedoctor 30 from approaching. - If the
sensor 29a detects the presence of thecarriage 20, i.e. that the carriage has been extracted, the software allows thedoctor 30 to approach thedistribution roller 12. - The means for
movement 31 comprise two actuators, one per side of the machine, like the one shown in the view inFigure 3 , which are adapted to raise and lower asupport 32 carrying thedoctor 30, and two pneumatic pistons 46, one per side, which are adapted to rotate thesupport 32, which is hinged to theframe 11 about an axis parallel to the axis A. - The translation and rotation of the
support 32 determine the approach of thedoctor 30 to thedistribution roller 12, in a controlled manner as a function of the thickness of thejacket 17 mounted on thebody 16. - The
support 32 also carries a reservoir for the glue, heated in order to maintain the glue at a (preferable) temperature of 150°C during use of themachine 10. -
Figure 4 shows a cross-section of themachine 10, during its use. - The following are shown and indicated:
- the
distribution roller 12, withbody 16 andjacket 17, - the
pressing roller 14, - the dosing means 15, with the
support 32 for the doctor 30 (here brought near the jacket 17), - a cooling
roller 34, - a spool of
untreated fabric 35, - a spool of treated
fabric 36, - the
fabric 13 on its path to be treated. - In succession, the
fabric 13 being treated also encounters other elements: - a
tension regulator 37, conventional, with two portions of passage of the fabric on opposite sides of a fulcrum, which is adapted to ensure a constant tension on thefabric 13, - a series of preceding
idle rollers 38, - a stretching
roller 39 for stretching the fabric, known in the sector as a "tentering screw", upstream of thedistribution roller 12 and of thepressing roller 14, which is adapted to stretch out the selvages of the fabric with its rotation, - a series of other
idle rollers 40, one of which is downstream of thedistribution roller 12 and of thepressing roller 14, and the others are downstream of the coolingroller 34. - From the views of
Figure 1 and ofFigure 2 the following can be identified: - an
electric motor 41 which is adapted to rotate apulley 42 which is keyed on a transmission shaft for transmitting the rotation to the stretchingroller 39, - a
linkage 43 for adjusting the position of the pressing roller 14 (which is coupled thereto at the end), toward and away from thedistribution roller 12,such linkage 43 being pivoted at the right-hand end, with respect to the illustration, and moved by apneumatic actuator 44 at the opposite end, - a
chiller 45, protruding with a connector of a tube for the passage of water or other coolant liquid, from the end of the coolingroller 34. - As a function of the thickness of the fabric and of the
jacket 17, the position of thepressing roller 14 is modified, in so doing calibrating the distance from thejacket 17 in order to ensure the right level of pressure. - Operation of the machine, according to the invention, is the following.
- The
fabric 13 is made to pass between thepressing roller 14 and thedistribution roller 12. Thepressing roller 14, which is conveniently rubberized, exerts a pressure on the surface of thejacket 17, causing the adhesion of the gluing points, which are in the matrix, on thefabric 13. - The
fabric 13 is brought into contact with the coolingroller 34 which crystallizes the gluing points. - When it becomes necessary to modify the gluing points, for example for a different basis weight or for a fabric of different thickness, the
jacket 17 is substituted for one with a different diameter and/or with a different matrix of impressions: this requires the cooling of thedistribution roller 12, following which the jacket can be easily extracted on thecarriage 20 toward the lateralexternal portion 51. - Before extraction, the
doctor 30 is moved away from thedistribution roller 12, in the position shown inFigures 1 and2 . - The
rails 22 with thecarriage 20 are brought below thejacket 17, in theinternal portion 50 of the machine. Thejacket 17 on the supporting structure is then made to translate outside with thecarriage 20 and with therails 22. - Another
jacket 17 is positioned on thecarriage 20, and this is made to translate vertically using thescrew gear reducer 27, in order to obtain the centering of thenew jacket 17 on the rotation axis A. - The
jacket 17 is then made to translate toward theinnermost portion 50 so as to fit over thebody 16, according to a single angular position defined by thescrew head 33. - As long as the
sensor 29c detects the presence of thecarriage 20 in the internal portion, thedoctor 30 will not be brought near thedistribution roller 12. - Once the
rails 22 and thecarriage 20 are moved away, these are detected by thesensor 29a in theexternal portion 51. Thesupport 32 of thedoctor 30 is made to translate and rotate usingactuators 31 and pneumatic pistons 46, in order to bring thedoctor 30 into contact with thejacket 17 of thedistribution roller 12. - The
body 16 is heated using the adapted heating elements and the heat is then transmitted to thejacket 17. - The thermal expansion coefficient of aluminum, of which the
body 16 is made, is approximately double that of the carbon steel of which thejacket 17 is made. This ensures that the expansion of thebody 16 is greater than that of thejacket 17, thus creating a compression on the body and so ensuring the mechanical seal between the two and the transmission of temperature to thejacket 17, which is necessary in operating conditions. - To extract the jacket, the cooling can be carried out with the air system, in order to obtain the shrinkage of the materials in the shortest possible time.
- In practice it has been found that the invention fully achieves the intended aim and objects by providing a machine that can be modified as a function of changes in production, rapidly and requiring the least physical effort possible from the operators, simply by substituting a part of the distribution roller.
- The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims. Moreover, all the details may be substituted by other, technically equivalent elements.
- In practice the materials employed, provided they are compatible with the specific use, and the contingent dimensions and shapes, may be any according to requirements and to the state of the art.
- The disclosures in Italian Patent Application No.
102020000004402 - Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.
Claims (10)
- A machine for applying glues or adhesives to fabrics or the like, which comprises a frame (11) which supports:- a distribution roller (12) for distributing glue on the fabric (13) which rotates about an axis (A),- a pressing roller (14) for pressing the fabric (13) against said distribution roller (12),- dosing means (15) for dosing said glue on said distribution roller (12),said machine (10) being characterized in that said distribution roller (12) comprises a body (16), which is coupled to said frame (11) and rotates about said axis (A), and a tubular jacket (17) around said body (16), which rotates integrally with it and can be removed from it, said jacket (17) being adapted to bear, on its outer surface, the glue to be deposited on the fabric (13).
- The machine according to claim 1, characterized in that said jacket (17) has a tubular shape with a matrix of impressions (18) on its outer surface, which bear the glue to be deposited on said fabric (13).
- The machine according to one or more of the preceding claims, characterized in that said body (16) has a cylindrical shape.
- The machine according to one or more of the preceding claims, characterized in that said jacket (17) is made of carbon steel and said body (16) is made of aluminum.
- The machine according to one or more of the preceding claims, characterized in that on the outer surface of said body (16) there is a helical groove (47) which, when the jacket (17) is coupled to said body (16), acts as a coil for the passage of cooling fluid.
- The machine according to one or more of the preceding claims, characterized in that said dosing means (15) comprise a doctor (30) which is provided with means for movement (31) toward and away from said distribution roller (12).
- The machine according to one of one or more of the preceding claims, characterized in that it comprises means for translating (19) said jacket (17) along said axis (A) coupled with said body (16) and uncoupled.
- The machine according to one or more of the preceding claims, characterized in that said means for translating (19) comprise parallel rails (22) with a carriage (20) which are adapted to support said jacket (17).
- The machine according to one or more of the preceding claims, characterized in that it comprises means for lifting (21) said rails (22) and said carriage (20).
- The machine according to one or more of the preceding claims, characterized in that said means for lifting (21) comprise a screw gear reducer (27).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102020000004402A IT202000004402A1 (en) | 2020-03-03 | 2020-03-03 | MACHINE FOR THE APPLICATION OF GLUES OR ADHESIVES ON FABRICS OR SIMILAR |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3875177A1 true EP3875177A1 (en) | 2021-09-08 |
Family
ID=70918797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21155957.0A Withdrawn EP3875177A1 (en) | 2020-03-03 | 2021-02-09 | Machine for applying glues or adhesives to fabrics or the like |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3875177A1 (en) |
IT (1) | IT202000004402A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3668752A (en) * | 1970-09-02 | 1972-06-13 | Dayco Corp | Coating roller and method of manufacture |
DE20112790U1 (en) * | 2001-08-01 | 2001-10-04 | Fa. Theodor Hymmen, 33613 Bielefeld | Roller application machine |
US20110318492A1 (en) * | 2010-06-25 | 2011-12-29 | Global Web Finishing | Coating apparatus and method |
EP3150728A1 (en) * | 2015-10-02 | 2017-04-05 | GE.MA.TA. S.p.A. | Machine for roller finishing natural hides and leather |
CN206996951U (en) * | 2017-06-29 | 2018-02-13 | 衢州市川特电子科技有限公司 | A kind of roll shaft structure of coating |
-
2020
- 2020-03-03 IT IT102020000004402A patent/IT202000004402A1/en unknown
-
2021
- 2021-02-09 EP EP21155957.0A patent/EP3875177A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3668752A (en) * | 1970-09-02 | 1972-06-13 | Dayco Corp | Coating roller and method of manufacture |
DE20112790U1 (en) * | 2001-08-01 | 2001-10-04 | Fa. Theodor Hymmen, 33613 Bielefeld | Roller application machine |
US20110318492A1 (en) * | 2010-06-25 | 2011-12-29 | Global Web Finishing | Coating apparatus and method |
EP3150728A1 (en) * | 2015-10-02 | 2017-04-05 | GE.MA.TA. S.p.A. | Machine for roller finishing natural hides and leather |
CN206996951U (en) * | 2017-06-29 | 2018-02-13 | 衢州市川特电子科技有限公司 | A kind of roll shaft structure of coating |
Also Published As
Publication number | Publication date |
---|---|
IT202000004402A1 (en) | 2021-09-03 |
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