IE871001L - Application of marking lines to mineral fibre web - Google Patents
Application of marking lines to mineral fibre webInfo
- Publication number
- IE871001L IE871001L IE871001A IE100187A IE871001L IE 871001 L IE871001 L IE 871001L IE 871001 A IE871001 A IE 871001A IE 100187 A IE100187 A IE 100187A IE 871001 L IE871001 L IE 871001L
- Authority
- IE
- Ireland
- Prior art keywords
- roll
- mineral fibre
- fibre web
- heating
- heating rods
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 109
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 108
- 239000011707 mineral Substances 0.000 title claims abstract description 108
- 238000010438 heat treatment Methods 0.000 claims abstract description 112
- 230000002093 peripheral effect Effects 0.000 claims abstract description 32
- 239000011230 binding agent Substances 0.000 claims abstract description 23
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000012546 transfer Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 10
- 239000003779 heat-resistant material Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 abstract 1
- 239000011888 foil Substances 0.000 description 8
- 230000035515 penetration Effects 0.000 description 8
- 230000006978 adaptation Effects 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 101100313377 Caenorhabditis elegans stip-1 gene Proteins 0.000 description 2
- 101100313382 Dictyostelium discoideum stip-2 gene Proteins 0.000 description 2
- 101100516335 Rattus norvegicus Necab1 gene Proteins 0.000 description 2
- 101150059016 TFIP11 gene Proteins 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
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- 238000007654 immersion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
- E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
- E04D13/1606—Insulation of the roof covering characterised by its integration in the roof structure
- E04D13/1612—Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters
- E04D13/1625—Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters with means for supporting the insulating material between the purlins or rafters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
- B44B5/02—Dies; Accessories
- B44B5/028—Heated dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B7/00—Machines, apparatus or hand tools for branding, e.g. using radiant energy such as laser beams
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/7654—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising an insulating layer, disposed between two longitudinal supporting elements, e.g. to insulate ceilings
- E04B1/7658—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising an insulating layer, disposed between two longitudinal supporting elements, e.g. to insulate ceilings comprising fiber insulation, e.g. as panels or loose filled fibres
- E04B1/7662—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising an insulating layer, disposed between two longitudinal supporting elements, e.g. to insulate ceilings comprising fiber insulation, e.g. as panels or loose filled fibres comprising fiber blankets or batts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
- E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B2001/741—Insulation elements with markings, e.g. identification or cutting template
Abstract
Markings have to be applied to the surface (41) of a mineral fibre web (38), said markings being arranged transversely to its length or to its direction of movement. For this, a cylinder (1) is provided with peripheral heating zones, in the form of heating rods (26), corresponding in shape and position to the markings to be applied, said cylinder (1) rotating at a speed whereby the rods (26), or marking ribs (30) provided on the latter, effect the rolling essentially without any slippage on the surface (41) of the mineral fibre web (38). The heating rods (26) or marking strips (30) are made of metal and are electrically heated, by an internal tubular heating element (31), to such a temperature that when contact is made with the surface (41) of the mineral fibre web (38) a flat decomposition zone (43) is created which corresponds to the contour of the marking strips (30), in which zone the binder of the mineral fibre web (38) is decomposed and by changing colour produces the optically visible marking line. The cylinder (1) can be driven either by a d.c. motor synchronously with the line speed of the mineral fibre web (38), or it can also be driven by entrainment with the surface (41) of the mineral fibre web (38).
Description
6 0 3 91 - i - METHOD and DEVICE FOR APPLYING MARKING LINES TO A WEB OF MINERAL FI3RE CONTAINING A BINDING AGENT The invention relates to a method of applying marking lines no a mineral fibre web containing a binding agent.
Such a method is known from EP-A-01Q137S (DE-A-3229601) . The marking lines to be applied there run in longitudinal direction of the mineral fibre web therefore in its direction of conveying or production. For avoiding a depositing of dyestuff with relatively expensive application technique consumption of material and possibly influencing of the burning behaviour a bum marking is produced in such a manner that a sharply bundled flam© or a sharply bundled hot air jet with a temperature, for example of 60G°G is directed onto the surface of the mineral fibre web which in its core area heats and thus changes the colour of the binding agent on the surface of the mineral fibre web at its decomposing temperature. For the producing of a marking line running edge parallel in longitudinal direction of the web thus only the arrangement of a suitable hot air nozzle or flam© lance over the running mineral fibre web is necessary- Such a procedure however is limited to the application of edge parallel marking lines; for the producing of mar Icing lines running perpendicularly to the side edges the hot air nozzle or the like could no longer be arranged stationary but had to traverse crosswise over the mineral fibre web and thereby be saved with the mineral fibre web which however for achieving definite and uniform marking distances considerable technical design and in particular control expenditure would be required. Furthermore such a flease or such a hot air jet produces not only a limited decomposition of the binding agent on the direct surface area but shows necessarily also a considerable action in depth.. Thereby there results on the • marking line a zone penetrating more or less far into the mineral fibre web in which no binding agent is active. This 60391 2 is, in the known case? harmlessf as this sons runs in longitudinal direction of the web and thus is not subjected to any forces acting crosswise to the direction of the marking line. As such mineral fibre webs are as a rule rolled up into a roll and are stored and transported in roll form there occur however forces at the zones free of binding agent lying crosswise to the longitudinal extension of the mineral fibre »eb If the marking side in the roll lies outside then the material tends to gape at the marking line,,, if it lies inside, the material tends to compress. Hereby by partial loosening of the fibre band,, in the area of the marking line with tx~action forces and by milling work occurring increased in the area of the marking line with acting pressure forces a weakening of the product can occur. Such a weakening is undersirable in particular when the material following the opening of the roll is to be present with homogeneous plate-like consistency as is the case according to DE-A-3612858.
From DE-A-3446406 it is known to employ a roll as heating apparatus. This heating apparatus in the for® of a roll however does not serve to apply marking lines but to produce attaching points penetrating deeply into the material in that the mineral fibres are softened locally and thus welded to one another., For this purpose the peripheral surface of the roll has rows of openings through which hot gas emerges lanceolate at high temperature,, as a rule up to 1000°C. The peripheral surface of the roll lies on the surface of the mineral fibre web and the roll turns at such a speed which corresponds to the speed of conveying of the mineral fibre web. An emergence of hot gas through & row of holes is then only allowed when this is in the area of the lower vortex of the roll so that the hot gas from each opening enters lanceolate into the mineral fibre web and forms attaching points. The penetration depth can thereby be furthered by 3 reduced pressure produced at the opposite side of the mineral fibre web.
Such an apparatus does not serve for the application, of marking lines and is also not suitable for the production, of 5 marking lines which practically do not influence the behaviour of the mineral fibre material at the marking place. The great penetration depth desired in the known case can indeed be reduced by throttling of the supply of hot gas, it is however» in every case, considerable when by local hot gas 10 flow during the time of contact so much energy is to be entered that a full change of colour takes place. Furthermore the lateral limitation of the area of action of the hot gas is difficult to control especially as the action in the course of the turning of the roll and thus therewith 15 varying direction occurs- In particular with a flow? of hot gas with gas passage aiaiiaised for reducing the penetration depth lateral portions of flow are of importance which in the edge area of the marking still effect partial decomposition of the binding agent and thus lead to a poorly defined 20 limitation of the marking.
From GB-A-2084921 it is likewise known to use a roll as a heating apparatus. Thereby the peripheral surface of the roll is formed by several radially adjustable segments in which respectively a heating strip running parallel to the 25 axis of the roll is disposed. This roll provided with axial parallel heating strips distributed on the peripheral side however does not serve to apply marking lines on a mineral fibre web containing a binding agent but to weld together two thin thermoplastic plastic foils in strip-like areas running 30 crosswise to their direction of conveying whereby due to the possible radial adjustability of the segments during operation their peripheral speed ■ and consequently the distance between the strip-like weld zones is variable. The two plastic foils lie on one another and are guided together over the roll so that in the course of their conveying movement they set the roll in rotation due to friction. In order to weld together the two foils in strip-like areas the transfer of heat from the respective heating stip to the foils must be so great that the foil contacting directly on the roll is melted in the area of the heating stip and the other foil supported by the counter roll is at leastt melted on so that a durable weld joint results - This known foil welding apparatus is not suitable for applying marking lines on a mineral fibre web which practically does not act on the properties of the fibre material. However, with the application of marking lines on a mineral fibre web not two thin scarsely compressible foils and having a smooth surface are to be welded together but a relatively thick mineral fibre web made of a slightly compressible material and having no closed surface,? is to be subjected to an entry of heat limited to its upper layers only to the extant that in consequence of the decomposition brought about by the heating and changing of colour of the binding agent clearly recognisable marking lines are formed. On the other hand an entry of heat due to the heating strips of the known apparatus would penetrate the mineral fibre web in its whole thickness and would have as a consequence a complete decoxnpos.ition of the binding agent in this area so that a considerable reduction of the mechanical strength of the mineral fibre web and with stresses due to traction and pulling forces even at least partial loosening of the fibre bond would result.
Proceeding from the prior art according to DS-A-3229601 the invention is based on the problem of providing an apparatus which renders possible in the simplest possible and reliable manner the application of marking lines running crosswise to the side edges onto a surface of a mineral fibre web and to render possible with small penetration depth of the decomposition phenosaina an application of clearly defined marking lines in exact and uniform distances from one another.
The present invention accordingly provides a method of applying marking lines to a mineral fibre web containing a binding agent, in which the surface of the mineral fibre web lying on a running conveyor belt, particularly the production belt, is subjected to the local heating action of a locally arranged heating device, wherein a roll is used as the heating device, whose peripheral surface is placed on the surface of the mineral fibre web, and which is rotated at a speed which results in the peripheral speed of the roll, which at least approximately corresponds to the speed of conveyance of the mineral fibre web, wherein locally sharply defined, parallax, linear heating zones are heated to a temperature which exceeds the temperature of decomposition of the binding agent in the mineral fibre web, and wherein the areas of the peripheral surface of the roll located between the heating zones are protected against the transfer of heat to the mineral fibre web.
The present invention also provides a device for implementing the method as described above, comprising a roll which is mounted on a shaft, and exhibits parallax arranged heating rods on the periphery, and with a heating device for the heating rods, wherein the shaft of the roll is mounted on a bearing frame which can be raised and lowered, and the areas of the peripheral surface of the roll, lying between the heating rods, are covered by cover plates of a heat resistant material.
Thereby first, of all reference is made to the concept of the use of a roll according to DE-A-344S406 which lies on the mineral fibre web. Instead of a use of hot gas for the local decomposition, of the binding agent the surface of the roll is 5 heated locally- Such a sharply defined axial parallel linear heating zone of correspondingly high temperature produces a heat action on the mineral fibre material mainly by conduction with a correspondingly steep drop in temperature in the heat resisting mineral fibre material so that the son© 10 of the decomposition remains limited to a flat surface area.
Furthermore the heat action decreases also to the side especially as a cooling can take place due to adjacent unheated zones on the peripheral surface of the roll so that a sharply defined contour results. In consequence of the 15 constractional peripheral side distances of the heating zones on the peripheral surface of the roll and the synchronous speed of mineral fibre web and peripheral surface of the roll there always result uniform distances of the marking lines. Of course according to the contact ratios between the roll 20 and the surface of the mineral fibre web a mutual distance of the marking lines on the mineral fibre web can result which deviates slightly from the peripheral side distance of the heating sones on the surface of the roll? such a deviation between adjacent marking lines is hardly measurable but it can over a plurality of marking lines add up to an amount which is of importance when about 2 0 times the nominal distance of the marking lines by counting of 20 marking lines „ is to be ascertained: Hereby instead of the theoretical 5 value of 20 x 100m - 2m a deviating distance of, for example, i- 1.96m could result. In order to exclude also such minimum but adding deviations the roll can be rotated at a peripheral speed which deviates slightly from the conveying speed in order in this way to compensate such small inaccuracies due 10 to the contact ratios between roll and mineral fibre web.
As the energy extraction from the heated zones is limited to that extent which is necessary for a locally clearly defined decomposition of the binding agent in a purely flat surface layer, the energy consumption is minimised..
In a particularly preferred arrangement of the invention the roll according to claim 2 is pushed into the surface of the mineral fibre web to fora a trough. Due to the contact pressure thus occurring,, an improvement of the conductive heat transfer from the heating zone to the mineral fibres 20 results. Furthermore., the forming of the trough occurring with the pushing in, results in a lengthening of the contact time between heating zone and mineral fibres and thus likewise an improvement in the heat transfer. At a certain conveying speed of the mineral fibre web the heat transfer 25 can thus be adapted to the requirement of forming a clear marking without too strong a heat entry into the mineral fibre webs With very slow conveying speed only a light pressure of the roll takes place and thus a reduction of the pressing pressure as well as of the contact path,,, so that the 30 desired heat entry with regard to the relatively long contact time available with low conveying speed takes place whilst with high conveying speed the heat transfer in the short time k available is correspondingly increased by increasing the pressing pressure and lengthening the contact path. Ass the marking takes place expediently already on the production belt its speed is dictated by the conditions of production, there thus results a degree of freedom of adaptation of the marking conditions at the respective production speed such that at all production speeds occurring a sufficient but not too intense a heat entry in the mineral fibre web takes place. Of course the heat entry into the mineral fibre web can be influenced completely or additionally also by control of the temperature of the heating zones. However, from the point of view of heat stressing of the roll on the one hand and the heat stressing of the mineral fibre web on the contact place with the heating zones on the other hand a relatively narrow optimum temperature range which should be maintained as far as possible, The different adjustment of the penetration depth renders possible a corresponding adaptation of the heat entry without the temperature having to leave the optimum range.
In particular with fixed given production speed of a certain mineral fibre web with uniform rough thickness and uniform binding agent content or also with freely selectable conveying speed of the mineral fibre web a need for an adaptation of the heat entry at different conditions can be dispensed with or in a narrower area be satisfied alone by temperature control. In such a case a particularly simple constructional arrangement of the apparatus is possible in that the roll rests on the mineral fibre web due to its ami weight. Measures for the variable weight support in operation can thereby be dispensed with when the weight of the roll is adapted to the given conveying speed or the latter to the weight of the roll. If required, the effective weight of the roll can be balanced by counter weight to a desired reduced value- The measure of claim 4 likewise renders possible a considerable simplification of the contructional assembly of an apparatus required for carrying out the method as for the operation a rotating drive can be dispensed with and if need be in a raised position of rest of the rollt, for its preheating, a simple rotating drive is necessary in order to ensure a uniform heating of the heating zones disposed distributed over the periphery of the roll.
By the measure of claim 5 there are interrupted so to speak dash marking lines. These fulfil as a rule their purpose and render it possible to work with single shorter heating zones lying at a distance from one another which in view of their lesser longitudinal expansion a-woid problems possible with an addition of the heat expansion in longitudinal direction. Furthermore the energy consumption is reduced and all drawbacks of the material consistency due to traction or pressure stress of the fibres in the roll are obviated in that there is present section-wise completely uninfluenced material An apparatus suitable in particular for the carrying out of the method accordinc to the invention is characterised in. detail by features of claim 7. Heating rods thereby form a particularly favourable constractional possibility for forming the heating zones required according to the method. For the forming of rectilinear dash markings heating rods running rectilinearly can be employed; however,? other markings such as screens,, monograms or the like nay also be produced when the heating rods are formed corresponding to the respective desired marking contour.
By the measures of claim 8 it is achieved that energy losses by heat radiation or heat conducting from the heating rods are minimized whereby at the same time an in particular lateral mounting of the heating rods by the good heat resisting material of the holders gives a sharp limitation of the heating 2;ones and ensures clean edges of the marking-lines .
When the heating rods according to claim 9 project to a small extant from the peripheral surface of the roll, then the air surrounding the heating rods provides for a cooling of the mineral fibre material adjoining the marking strips during the marking and thus favours a cleaner forming of the edges of the marking lines. Furthermore in particular with the roll pushed deeper into the mineral fibre web the entertainment action of the mineral fibre material on the roll is increased, as projecting edges of the heating rods favour the entertainment action.
When the heating rods according to claim 10 are heatable by embedded electrical tubular heating elements there results a constructive freedom of movement of the structure of the heating rods. A tubular heating element: available in the trade may be used which results in low procurement costs and high operating reliability without its outer contour limiting the constructional freedom of movement of the heating rods. Basically however any type of suitable heating device, even & contactless, for example, inductively working heating is usable so long as it is ensured that the desired heating can be effected locally in the heating sones® A design particularly suitable construetionally follows according to claim 11 by the use of an inner supporting element for the roll in the form of & cylindrical polygon. Each straight face of the polygon may in a constructional!? simple manner be a carrier for the holder and the mounting of a heating rod.
A sychronization of the driving speed of the roll with that of the conveying or production belt can take place in simple manner in that for the driving of the roll a direct current motor is used. If however according to claim 4 a rotating entertainment of the roll is effected on the mineral fibre web then according to claim 12 it is preferred to provide an electric motor freewheel then formed suitable as a three-phase current motor which in the heating up phase provides for a continuous slow rotation, of the roll with uncritical number of revolutions for the uniform heating up of the heating rods and its freewheel allows an overtaking of the motor as soon as the roll contacts the mineral fibre web and is driven by this at increased speed. With each interruption of operation the electric motor then rotates the raised roll further in order to ensure always a uniform heating up of the heating rods.
In particular with a selectively strong pushing in of the roll into the mineral fibre web according to claim 2 for the adaptation to different conveying speeds of the mineral fibre web it is provided according to claim 13 that the bearing frame of the roll is retained positively adjustable in its vertical position by means of an adjusting drive. In this way, at any time,, a fine adjustment of the pushing in means of the roll in the mineral fibre web can be effected such that an optimum forming of the markings in dependence of the momentary conveying speed of the mineral fibre web results™ The adjusting drive has suitable according to claim 14 at least one threaded spindl® which, for example,, can be driven by an electric motor and thus remote controls a prohlemlese fine adjustment and' ensures its maintenance. The threaded spindles engage preferably a retaining frame formed likewise rateable and lowerable for the raisable and lowerable bearing frame. According to claim 15 this retaining frame is connected via a pressure medium drive t.o the bearing frame and the latter is movable by means of the pressure medium drive between an operating position and a position of rest. In this way, also for emergency stopping a rapid, remote controlled switching of the roll between the lowered operating position and the raised position of rest can be effected whilst the fine adjustment of the relative position of the roll to the mineral fibre web in the operating position is effected by the adjusting drive, the position of which, with operating pauses or other interruptions must not be altered.
Further details, features and advantages of the invention result from the following description of one embodiment with reference to the drawing.
There is shown in Fig. 1 a side view of an end area of an apparatus according to the invention,.
Fig. 2 a front view partly in section of a part of the roll of an apparatus according to the invention in its disposition on the surface of the mineral fibre web and Fig. 3 a diagrammatically simplified perspective representation of the roll according to Fig. 2.
In Fig. 1 a roll is indicated with l,f as is illustrated in Fig. 2 enlarged with details and in perspective, simplified diagrassaatically in Fig. 3. In Fig. 1 only the left end of the roll 1 in the example is illustrated whereby it is understood that there is a corresponding bearing of the roll on the opposite end. In Pig. 1 a shaft is furthermore indicated with 2 which is connected to the roll 1 and serves for its bearing. The bearing of the roll 1 via the shaft 2 is effected on a bearing frame 3 via bearings 4 on both sides. Outside the bearings 4 the shaft 2 projects into an electric connection box 5 in which in known manner via slip-rings 6, illustrated diagrammatically, a supply of current to the rotating parts of the roll 1 is effected.
The roll l is rotatable via the shaft 2 in the bearing 4. As rotating drive an electric motor 7 is provided which is mounted on the bearing frame 3 and with a driving pinion 8 via a toothed belt or the like drives a driving gear 9 connected rotatable fixed to the shaft 2. In this way the roll 1 can be set in rotation in the bearings 4.
The bearing frame 3 is guided movable up and down on columns 10 of a stationary support indicated collectively with 11. In corresponding manner a retaining frame 12 is guided on the columns 10 movable up and dowi with a crosspiece 13. The bearing frame 3 is held on the retaining frame 12 via pressure medium drive 14 in the form, for example,, of pneumatic cyclinders 15 which are mounted on the crosspiece 13 and the piston rods 16 of which engage the bearing frame at 17. With stationary retaining frame 12 an entry of the piston rods 16 into the pressure medium cylinders 15 thus leads to a raising of the bearing frame 3 together with the roll 1 so that this comes to lie in a raised position, of rest whilst in the lowered position of the bearing frame 3 shown,, the operating position is present which is illustrated in more detail in Fig. 2.
The retaining frame 12 is for its part connected via an adjusting drive 18 to a crosspiece 19 of the fixed support 11. The adjusting drive 18t for example, in the forsa of threaded spindles 20 are actuated via sun ^ electric motor 21, for example, in the form of a step-by~step motor and gearing 22. Via the adjusting drive 18 the height position of the crosspiece 13 and of the retaining frame 12 can be finely adjusted in a desired position. With the piston rod IS of the pressure medium drive 14 driven out there results thereby a corresponding determined vertical height of the roll 1. By actuation of the pressure medium drive 14 the roll 1 can be lowered into this predetermined operating position or raised into a position of rest without the retaining frame 12 being changed in its position and thus raised into the adjusted fine adjustment,, In Fig. 2 the lower area of the roll 1 is shown, in a front view and partly in section in the operating position- As can be seen therefrom the roll 1 has a supporting element 23 in the form of a polygon, in the example, in the form of a polygon with 20 faces on the flat shell faces 24 of which holders 25 for heating rods 26 are held via screws 27.
The heating rods 26 have a bearing element 28 disposed inside the holders 25 as well as marking ribs 30 projecting from the peripheral surface indicated with 29 of the roll I* The heating rods 26 consist of a suitable good heat conducting metal and have in the area of their bearing element 28,, in the example, a round recess 31 for receiving usual tubular heating elements 32 - similar to heating coils of immersion heaters™ For the mounting of the tubular heating elements 32 the heating rods 26 are formed divided in a plane 33 radial to the axis of the roll 1 whereby the parts 26a and 26b thus formed of the heating rods 26 are connected to one another by suitable counter-sunk head screws 34 and 35. After mounting the tubular heating elements 32 in the recess 31 of the two open parts 26a and 26b of the heating rods 26, the heating rods 26 are premounted by insertion of the screws 34 and 35 and pushed into the holders 25. The holders 25 are then provided in their peripheral outer side with cover plates 36 ;which engage cnrer shoulders 37 of the bearing element 28 of each heating rod and thus hold these securely in the holders 25. ;The holders 25 as well as the cover plates 36 consist of a suitable bad heat conducting material such as a fibrous or fibre-containing pressed material on the basis of asbestos or asbestos substitute in order to avoid heat losses of the heating rods 26 as well as to protect the areas of the peripheral surface 29 on both sides of the marking ribs 30 from heating up and loss of heat on the mineral fibre material of the mineral fibre web indicated with 38. In this way all sides of the heating rods 26 lying inside the peripheral surface 29 of the roll 1 are surrounded by heat resistant material. ;Each heating rod 26 has a recess 39 for receiving an earthing cable. At least one of the heating rods 26 has furthermore a recess 40 in the vicinity of its marking rib 30 for receiving a thermal feeler. The temperature regulation with reference to the thermal feeler as well as the current supply of the tubular heating element 32 is effected via slip rings 6 (see Fig. 1). In consequence of the fine control of the optimum formation of the markings by different pressure of the roll 1 on the mineral fibre web 38 a temperature regulation with reference to thermal feelers may however also b@ dispensed with and instead only the current supply to the tubular heating elements 32 regulated- ;In stationary operation there results then a fixed temperature which is suitable for producing the markings whereby the optimum form of the markings can be adjusted by the extent of the pushing in of the roll 1 into the mineral fibre web 38. ;- 16 - ;As can be seen from Fig„ 3 the marking ribs 30 of the heating rods 26 and as the case may be the heating rods themselves extend only o?er a part of the axial length of the roll 1 so that several marking ribs 30 form an interrupted line along a ■V 5 directrix of the roll 1 and are disposed in axial distance from one another. If the length of the heating rods 26 is lioaited to the axial extension of the marking ribs 30 there results a plurality of individual shorter heating rods with heat expansions easy to control. ;10 ~ha connection of the heating rods 26 to one another can then take place toy means of leads or a piece of the tubular heating element 32 suitable stopped up on the peripheral side which connects the heating rods 26 approximately arcuately. If on the other hand the heating rods 26 pass over the whole 15 axial length of the roll 1 and there are only present the necessary gaps for interrupting the marking and only between the projecting sections of the heating rods 26 designated as marking ribs 30 then a very robust and stabile construction results in which the tubular heating elements 32 are embedded 20 over their whole length in the heating rods 26. ;The mineral fibre web 38 is preferred of such type as is explained within the scope of DE-A-3612858. It way thus,, in the example, be a question of an unbacked mineral fibre web 38 with a width of 1200mm,. a nominal thickness of 100mm and a 25 length of 6m. The rough density may be between 10 and SOkg/m^;, in particular between 14 and 25kg/m^ and in the concrete example, lSkg/m^. As binding agent there comes into question in particular phenol resin in a proportion of 6 to 7 weight % of the dry binding agent in the product whereby, in 30 the example, the blading agent content of phenol resin may be 6,.,6 weight % (dry). With regard to the properties and the use of such a nimeral fibre web 38 as well as with regard to other details reference must be made with regard to its full ;- 17 - ;contents to DE~A~3612858- ;In operation the roll 1 with the piston rods 16 driven in above the surface t, indicated with 41 of the mineral fibre web 38 is set in rotation by the electric motor 7 whereby the 5 heating rods 26 are pre-heated by supply of current to the tubular heating elements 32 to a desired temperature monitored as the case may be by the thermal feeler. The rotation in the pre-heating phase ensures uniform heat losses of the individual heating rods 26 and marking ribs 30 and 10 thereby their uniform heating without individual temperature regulation on each individual heating rod 2 6. At the commencement of production the piston rods 16 are driven out and the roll 1 is lowered onto the surface 41 of the mineral fibre web 38 whereby by means of the electric motor 21 and 15 the adjusting drive 18 a fine adjustment of the height position of the roll 1 above the mineral fibre web 38 can be effected.. The adjustment is thereby so suitable selected that the marking ribs 30 on the periphery of the roll push into the surface 41 of the mineral fibre web 38 forming a 20 trough 42. The deeper the trough 42 is pushed in with a given mineral fibre web 38 the higher is the pressing pressure and the duration of influence for the improvement of the conductive heat transfer of the marking rib 30 on the mineral fibre material. The surface 41 of the mineral fibre 25 web 38 is typically uncoveredL> will therefore be formed by the mineral fibre tangled layer itself f however the surface 41 may also have a backing, say, in the form of a fleece on the basis of mineral fibre or from other fibres. ;The marking rib 30 has thereby a temperature of typically in 30 the order of magnitude of 400°C and produces a zone, indicated in dot and dash line at 43, of the decomposition of the binding agent in the mineral fibre web 38 which is changed in colour. In this way there result corresponding to ;- 18 - ;the pattern of the marking ribs shown in Fig*. 3f marking dashes on the surface 41 of the mineral fibre web 38 which extend crosswise to the side edges of the mineral fibre wab 41.
By fine adjustment via the adjusting drive 18 the heat transfer conditions can be so controlled that an optically clearly deposited marking with sharp edges results without any damage to the material of the mineral fibre web 18 over a flat decomposition zone 43 taking place.
Vxa the driving pinion 8 and the drive gear 9 a continuous driving of the roll 1 synchronously with the conveying spaed of the mineral fibre web 38 can be effected. A direct current motor is then suitably employed as an electric motor 7. In the embodiment shown however,, as electric motor 7 & 15 three-phase current motor is used which is connected via a free-wheel 44 to the driving pinion 8 such that upon driving the roll 1 from the mineral fibre web 38 the speed of rotation of the roll 1 can overtake that of the electric motor 7.. The drive by the electric motor 7 serves in this 20 case exclusively for maintaining an uncritical minimum speed of rotation from the speed in the raised position of rest upon omission of the drive from the mineral fibre web 38 in order to ensure a uniform heating of the heating rods 26» By operating the adjusting drive 18 the heat transfer 25 conditions between the marking ribs 30 and the surface 41 of the mineral fibre web 38 in the manner described can be adjusted for forming optimum marking lines - With given conveying speed and consistency of the mineral fibre web 38 however such a fine adjustment can also be 30 dispensed with as then with a fixed ©readjustment of the push in conduct of the roll 1 into the surface 41 of the mineral fibre web 38 can be worked. In this way the construction for the supporting of the roll 1 can be substantially simplified. If furthermore the weight of the roll 1 can b® kept such that only by the weight loading of the surface 41 of the mineral fibre web 38 by the weight of the roll 1 a desired penetration depth results then the pressure medium drive 14 can be switched pressureless in the operating position so that the roll 1 lies simply with its own weight on the mineral fibre web 38. Too great a penetration can in this case be avoided in that the marking ribs 30 do not project by a few millimeters in the example, about Bmm from the undisturbed peripheral surface 29 of the roll 1 but lie within the undisturbed peripheral surface 29 so that this -approximately in the form of the cover plates 36 - helps to carry the weight and thus avoids too great a local penetration. The construction shown with marking ribs 30 projecting from the peripheral surface 29 is suitable however in a particularly excellent manner for a drive of the roll 1 from the mineral fibre web 38»
Claims (17)
1.A method of applying marking lines to a mineral fibre web containing a binding agent, in which the surface of the mineral fibre web lying on a running conveyor belt, particularly the production belt, is subjected to the local heating action of a locally arranged heating device, wherein a roll is used as the heating device, whose peripheral surface is placed on the surface of the mineral fibre web, and which is rotated at a speed which results in the peripheral speed of the roll, which at least approximately corresponds to the speed of conveyance of the mineral fibre web, wherein locally sharply defined, axis-parallel, linear heating zones in the fox® of electrically heated heating rods are heated to a temperature which exceeds the temperature of decomposition of the binding agent in the mineral fibre web, and wherein the areas of the peripheral surface of the roll located between the heating zones are protected against the transfer of heat to the mineral fibre web by means of applying cover plates lying at the ontside and made of heat, insulating material.
2.A method according to claim 1, wherein the roll is pushed into the surface of the mineral fibre web to form a trough.
3.A method according to claim 2, wherein the roll rests on the mineral fibre web due to its own weight,
4.A method according to claim 2 or 3 e wherein the roll is driven by entrainment on the surface of the mineral fibre web.
5.A method according to any one of claims 1 to 4, wherein a majority of heating zones is used to form an - 21 - interrupted marking line, the zones lying flush behind one another and at a certain distance from each other.
6.A method according to any one of claims 2 to 5, wherein the depth of the trough formed in the surface of the mineral fibre web is controlled by the speed of conveyance of the mineral fibre web in such a manner that the depth increases with this speed in order to keep essentially constant a predetermined heat transfer from the roll to the mineral fibre.
7.A device for implementing the method according to at least one of claims 1 to 6, with a roll which is mounted on a shaft, and exhibits axis-parallelly arranged heating rods on the periphery, and with a heating device for the heating rods, wherein the shaft of the roll is mounted on a bearing frame which can be raised and lowered, and the areas of the peripheral surface of the roll, lying between the electrically heated heating rods, are covered by cover plates of a heat insulating material lying at: the outside.
8.A device according to claim 7, wherein the heating rods are arranged in holders of heat resistant material, such as fibrous pressed material, which holders completely surround the heating rods, preferably on its sides arranged inside the peripheral surface of the roll.
9.A device according to claim 7 or 8, wherein the heating rods project fro® the peripheral surface of the roll by one or two millimetres.
10.A device according to any one of claims 7 to 9, wherein the heating rods can to© heated by embedded electrical tubular heating elements. - 22 -
11. A device according to any one of claims 7 to 10, wherein the roll exhibits an inner supporting element e in the form of a cylindrical polygon,, the number of its surfaces corresponding to the number of heating rods on 5 the peripheral side.
12. A device according to any one of claims 7 to llf, wherein the roll can be driven, by an electric motor with a freewheel. 10
13. A device according to any one of claims 7 to 12 e wherein the bearing frame of the roll is retained in its vertical position by means of an adjusting drive, so that its position can b© positively adjusted. 15
14. A device according to claim 13, wherein the adjusting drive exhibits at least one threaded spindle which engages a retaining frame which can be raised, and lowered„ for the bearing frame™ 20
15. A device according to claim 14, wherein, the retaining frame is connected by a pressure medium drive to the bearing frame,- and wherein, the latter can be moved by means of the pressure medium drive between an operating 25 position and a position of rest.,
16. A saethod of applying marking lines to a mineral fibre web containing a binding agent as claimed in any one of claims 1 to 6e, substantially as herein described with 30 reference to the accompanying drawings.
17. A device for applying marking lines to a mineral fibre web containing a. binding agent as claimed in any one of claims 7 to ISe substantially as herein described with 35 reference to and as shown in the accompanying drawings. MACLACKLAN & DONALDSON, Applicants" Agents, 47 Herrion Square , DUBLIN 2.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3612858A DE3612858C1 (en) | 1986-04-16 | 1986-04-16 | Process for installing mineral fiber material in roll form in an elongated installation space delimited by side supports, and mineral fiber web suitable for carrying out the process, and process for its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE871001L true IE871001L (en) | 1987-10-16 |
| IE60391B1 IE60391B1 (en) | 1994-07-13 |
Family
ID=6298831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE100187A IE60391B1 (en) | 1986-04-16 | 1987-04-16 | Process and device for applying marking lines to a web of mineral fibre containing a binding agent |
Country Status (12)
| Country | Link |
|---|---|
| EP (2) | EP0244035B2 (en) |
| AT (1) | ATE68418T1 (en) |
| CA (1) | CA1302155C (en) |
| CH (1) | CH660765A5 (en) |
| DE (1) | DE3612858C1 (en) |
| DK (1) | DK165398C (en) |
| ES (1) | ES2026895T5 (en) |
| FI (1) | FI875548A (en) |
| GR (1) | GR3002922T3 (en) |
| IE (1) | IE60391B1 (en) |
| IT (1) | IT1216923B (en) |
| WO (1) | WO1987006198A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3908128A1 (en) * | 1989-03-13 | 1990-09-20 | Gruenzweig & Hartmann | THERMAL MARKING DEVICE FOR MINERAL WOOLWAYS AND METHOD FOR APPLYING MARKINGS |
| DE3928741A1 (en) * | 1989-08-30 | 1991-03-07 | Gruenzweig & Hartmann | SLOPED ROOF, ESPECIALLY OF OLD BUILDINGS, AND INSULATION SHEET FOR ITS INSULATION AND PROCESS FOR ITS PRODUCTION |
| DE4341433A1 (en) * | 1993-12-04 | 1995-06-08 | Joma Daemmstoffwerk Josef Mang | Building insulation board |
| DE4447681C2 (en) * | 1994-04-29 | 2000-05-31 | Gruenzweig & Hartmann | Facade insulation system |
| EP0795424B1 (en) * | 1996-03-12 | 2002-06-19 | Kaibel & Sieber GmbH | Device and method for producing markings on a product of mineral fibres |
| DE29616963U1 (en) * | 1996-09-28 | 1997-01-02 | Rockwool Mineralwolle | Fiber insulation |
| US6295923B1 (en) | 1997-12-05 | 2001-10-02 | Seeber Engineering Gmbh | Device with eccentric stamping wheel for stamping moving parts |
| DE19903370A1 (en) * | 1999-01-28 | 2000-08-03 | Gruenzweig & Hartmann | Markings on mineral wool products in particular |
| US6644185B1 (en) * | 2000-11-06 | 2003-11-11 | Greydon Inc. | Flexographic rotary platen printing press |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3730081A (en) * | 1972-01-07 | 1973-05-01 | G Colledge | Rotory hot die embosser with tapered shaft and insulated embossing wheel |
| US4007767A (en) * | 1972-01-07 | 1977-02-15 | Colledgewood, Ltd. | Highspeed rotary branding process having increased die life |
| US4288968A (en) * | 1979-12-03 | 1981-09-15 | Fuji Machinery Co., Ltd. | End sealing device for a plastic film in a packaging apparatus |
| US4380446A (en) * | 1980-09-12 | 1983-04-19 | Rexham Corporation | Side sealing mechanism for a packaging machine |
| DE3203624C2 (en) * | 1981-09-17 | 1990-02-15 | Deutsche Rockwool Mineralwoll-GmbH, 4390 Gladbeck | Board made of insulating materials, in particular mineral fibers |
| DE3229601C2 (en) * | 1982-08-09 | 1984-12-06 | Grünzweig + Hartmann und Glasfaser AG, 6700 Ludwigshafen | Insulating material web, consisting of an insulating material layer, in particular of mineral fiber felt, and a glued-on lamination web, as well as a process for its production and a process for its installation |
-
1986
- 1986-04-16 DE DE3612858A patent/DE3612858C1/en not_active Expired
- 1986-07-08 CH CH2755/86A patent/CH660765A5/en not_active IP Right Cessation
-
1987
- 1987-04-07 IT IT8720016A patent/IT1216923B/en active
- 1987-04-16 EP EP87200792A patent/EP0244035B2/en not_active Expired - Lifetime
- 1987-04-16 IE IE100187A patent/IE60391B1/en not_active IP Right Cessation
- 1987-04-16 EP EP87902501A patent/EP0266382A1/en active Pending
- 1987-04-16 AT AT87200792T patent/ATE68418T1/en not_active IP Right Cessation
- 1987-04-16 WO PCT/EP1987/000208 patent/WO1987006198A1/en not_active Application Discontinuation
- 1987-04-16 CA CA000535041A patent/CA1302155C/en not_active Expired - Fee Related
- 1987-04-16 ES ES87200792T patent/ES2026895T5/en not_active Expired - Lifetime
- 1987-12-16 FI FI875548A patent/FI875548A/en not_active IP Right Cessation
- 1987-12-16 DK DK660787A patent/DK165398C/en not_active IP Right Cessation
-
1991
- 1991-10-17 GR GR91401486T patent/GR3002922T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0266382A1 (en) | 1988-05-11 |
| ES2026895T3 (en) | 1992-05-16 |
| DK165398C (en) | 1993-04-05 |
| ATE68418T1 (en) | 1991-11-15 |
| GR3002922T3 (en) | 1993-01-25 |
| DK165398B (en) | 1992-11-23 |
| CH660765A5 (en) | 1987-06-15 |
| CA1302155C (en) | 1992-06-02 |
| IT1216923B (en) | 1990-03-14 |
| ES2026895T5 (en) | 1995-08-16 |
| FI875548A0 (en) | 1987-12-16 |
| DE3612858C1 (en) | 1987-10-01 |
| WO1987006198A1 (en) | 1987-10-22 |
| DK660787D0 (en) | 1987-12-16 |
| EP0244035A1 (en) | 1987-11-04 |
| FI875548A (en) | 1987-12-16 |
| IE60391B1 (en) | 1994-07-13 |
| EP0244035B2 (en) | 1995-05-17 |
| DK660787A (en) | 1987-12-16 |
| IT8720016A0 (en) | 1987-04-07 |
| EP0244035B1 (en) | 1991-10-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK9A | Patent expired |