ES2319705A1 - Armed band producing method for building board, involves separating tape bundles of strip to provide metallic tapes and to stick tapes on paper tape bundle so as to obtain armed band, where bundles are heated before and after they are stuck - Google Patents

Abstract

The method involves providing a steel strip (12), wound on a bobbin, and simultaneously unwinding the strip and a paper tape bundle (22). The strip is continuously slit to obtain two slit metallic tape bundles (16), and the bundles are separated to provide a pair of metallic tapes and to stick the tapes on the paper tape bundle so as to obtain an armed band. The bundles are heated before they are stuck so as to evaporate residual water contained in the bundles. The bundles are also heated after they are stuck.

Description

Procedure for the production of bands armed.

The present invention refers to a procedure for the production of armed bands intended for Panel coupling in the field of industry building.

These armed bands have two edges rigid intended to be folded longitudinally one towards the another to define an edge, and they are ready to be applied over the angle defined by two panels of building. These bands are constituted by a tape of paper, on which a pair of metal tapes are attached,  these last tapes being arranged at a certain distance a of another and in parallel positions, in order to allow folding between them, thus defining the expressed edge.

The procedures currently known for the constitution of the indicated armed bands consist of jointly unwind a reel of paper tape and two reels of metallic tape, in rigging these two metal tapes and in dragging the paper tape and the pair of metal tapes, one towards the other, in order to adhere the metal tapes on the paper tape at a certain distance from each other and in positions parallel.

A drawback of this procedure of manufacturing resides in the relative drag speed of the two metal tapes and in longitudinal tension differences that can be engendered when the adhesion of them is carried out On the paper tape. Indeed, if there are differences of tension between the two tapes, the armed band obtained has tendency to spiral around when placed on a flat.

Moreover, metal tape reels they are relatively bulky, and if you want to increase the productivity performing in parallel a multiplicity of bands armed, the surface occupied on the ground becomes Quickly in prohibitive.

Under these conditions, a problem that arises and which is aimed at solving the present invention, is based on provide a procedure for the production of armed bands that allows not only to obtain at least one pair of metal tapes whose respective longitudinal tensions are substantially equivalent, but allow at the same time reduce the space necessary for the production of the indicated armed bands.

With the indicated purpose, the invention proposes a procedure for the production of armed bands, presenting these bands two rigid edges intended to be folded longitudinally against each other to define an edge, being these armed bands ready to be applied on the angle formed by two construction panels, whose procedure belongs to the type of agreement with which it is supplied at least one paper tape and at least one pair of metal tapes and they jointly drag each other said paper tape and the  referred pair of metal tapes, the tapes being attached metallic members of said pair on the indicated paper tape at a certain distance from each other and in parallel with each other; he The procedure that is the subject of the invention comprises the following stages: a metal band is supplied; they crawl simultaneously this metal band and the indicated paper tape; be longitudinally binds said metal band continuously to obtain two separate metal half bands; and these are separated two independent metal half-bands to constitute the referred pair of metal tapes, which are finally attached on the expressed paper tape, thus obtaining a band navy.

Under these conditions, a characteristic of the invention resides in the realization of a pair of metal tapes directly from a metal band wound on a coil, unwinding this metal band together with the paper tape and being divided into two half bands so that, then, the two metal tapes obtained in this way are adhered to the paper tape. Under these conditions, the tapes Metals are dragged at the same speed, which matches the unwind speed of the metal band and no longer fits possibility of raising the problems generated by the longitudinal tension differences. In addition, there is no longer any need to have two reels but simply one metal band coil, which reduces the occupancy area ground.

Moreover, and according to a form of implementation of the invention, which results particularly advantageously, a plurality of paper tapes are supplied, being these tapes pulled together in parallel, and supplied a metal foil that is split into a plurality of pairs of metal tapes, in order to adhere each of these pairs of metal tapes on each of the aforementioned paper tapes. In these conditions, and by means of a single metallic sheet rolled on a coil that represents an occupation relatively modest of the soil surface, it is possible simultaneously produce a plurality of armed bands, by example six, without more than choosing a width of sheet that allows subdivide it into twelve tapes.

In addition, the longitudinal tensions of the metal tapes of the different pairs of tapes Metals obtained from a single sheet, are noticeably equivalents, which allows, not only to produce a plurality of armed bands without internal differential voltages and, consequently, they do not curl when unrolled, but also simultaneously produce armed bands in which the voltages of the corresponding metal tapes are identical.

In addition, advantageously, both are heated separate metal half bands before adhesion, in order to determine the evaporation of the residual water contained on the metal sheet, and, above all, in order to evaporate the oil residues caused by the division operation or already preexisting This way it will be easier and, above all, more effective adhesion between paper tape and tapes metallic

Advantageously, the batteries are guided to an accumulator referred to metal semi-bands and the indicated band is woven metal at a speed regulated by the number of half-bands metallic accumulated in said accumulator so that it is not it is necessary to synchronize the speed of the unwinding means, but simply adapt the creasing speed to the real speed of adhesion. Indeed, even if it turns out perfectly possible to synchronize media speeds of drag, at the level of cleft and at the level of adhesion, results it is preferable to determine that these speeds depend on the quantities of unwound metal tapes since the latter experience dimensional variations in the course of the procedure of production and especially during heating. For other part, despite the means of dragging to which it has been made reference are directly coupled to the metal tape to drag it in translation, the risk that there is a lag especially if the metal tape results unexpectedly braked. For this reason, the simple synchronization of the means of dragging does not allow to guarantee a drag in optimal conditions of the metal tape. In addition, the means of synchronization are more complicated to implement and, as Consequently, they are more expensive.

In addition, the paper tape can advantageously be dragged into a zigzag to regulate tension longitudinal of it. It's about getting a band armed in which the longitudinal tension of the paper tape and of the metal tapes are regular during the adhesion operation and throughout the production, in order to guarantee quality identical and constant of the armed band obtained.

On the other hand, advantageously the paper tape it will be heated before the adhesion of the metal tapes with object, also in this case, to determine the evaporation of water that it could contain. This operation also cooperates in speed and adhesion strength improvement metal / paper

On the other hand, for the indicated adhesion, use a glue that is extruded on the said paper tape before applying on it the indicated metal tapes and press the assembly to determine the adhesion of these tapes Metallic on that paper tape. Under these conditions, the tail deposition, in liquid form, is more rational than in classical procedures by means of an applicator roller. In addition, in order to further adjust the longitudinal tension in separate metal half-bands and, as a consequence, in metal tapes, a longitudinal tension is applied to them base to make them pass through two adjustable skates dragged against each other by elastic means. From this way, the metal belts are dragged to through two adjustable skates that, consequently, must be regulated in each case to obtain a longitudinal tension identical between the metal tapes.

Moreover, and preferably, it heats up the aforementioned pair of metal tapes and the indicated paper tape after having adhered to each other, in order to accelerate the queue consolidation speed, and whether it is about evaporate a solvent as if it were to accelerate the speed of crosslinking of a polymer.

According to a form of implementation of the invention which is particularly advantageous, is wound simultaneously on a first support that involves a motor shaft a certain amount of the expressed armed band, after having adhered to each other the indicated paper tape and the referred to metal tapes, and this first support is replaced by a second support that also includes a motor shaft, of a substantially continuous way, when the referred one has been rolled up amount of armed band, after having cut and coupled said armed band to the indicated second support, as a result of which the expressed amount of rolled and cut armed band can be conditioned in due time. In this way, the two trees engines are intended to be swapped automatically when has rolled the determined amount of armed band. For this purpose, and in order not to interrupt the previous operations of production, creasing and adhesion, on the one hand, a zone of accumulation of armed bands, before being rolled up, and provide means to cut and hold the armed band. In these conditions, the armed band accumulates in the accumulation zone while curl stops. Next, the armed band near the determined amount of armed band rolled up in coil, and then the motor shafts are swapped, and hold the free end of the armed bands, in the part above, which is coupled to the permuted motor shaft. Then, it determines the rotation of the permuted motor shaft, for, by a part, roll up the accumulated armed band in the accumulation zone and then, directly, the directly produced armed band. In These conditions, without interrupting the production process, result possible to condition the determined amount of armed band wound on the other motor shaft that is then released.

Other peculiarities and advantages of the invention will follow from reading the description that then relates to a particular embodiment of the invention, which is given by way of indication, but not limitation, referring to the attached drawings, in which:

- Figure 1 is a synoptic scheme of the different stages of the procedure for the production of bands armed according to the invention;

- Figure 2 is a schematic view in perspective of a device that allows the implementation of one last stage of the production procedure that has been illustrated in figure 1.

Figure 1 illustrates in a very schematic the different transformation stations that correspond to the different stages of the procedure for the production of armed bands that is the subject of the invention.

Thus, a sheet u is supplied first coil-wound steel sheet, this coil being installed vertically in a supplier 10 and remaining consequently horizontally oriented the axis of said coil. The metal sheet can have, for example, a width standardized 138 mm. The steel sheets of these dimensions They are usually supplied in reels by merchants metallurgists

A portion 12 of the metal foil that is progressively unwind thanks to the supplier, go through first a trim post 14 that allows splitting longitudinally said sheet in six pairs of metal tapes, which in this case will have a width of eleven millimeters, constituting a first beam 16 at the exit of this post of trimmed 14. Taking into account the width of the initial sheet, two leftover tapes must be rolled separately equipped with a width of 3 mm. approximately.

This position includes two series of discs, being these disks equipped with the same thickness that corresponds with the width of 11 mm. of the tapes, being overlapped between Yes and being mounted on two parallel trees. Metal sheet is pressed and dragged between the two series of discs which, turning as the metal sheet advances, cut it in Tapes or straps.

The first beam 16 of metal tapes passes through then a heating tunnel 18 which allows especially determine the evaporation of waste water from the coil that covers the surface of the sheet, but also allows to determine the evaporation of oil residues that remain on the belts Metallic after the trim operation. In these conditions, being dried and degreased the surface of the metal tapes will improve the quality of adhesion that It is done later. In addition, this operation allows to supply metal tapes at a constant temperature, whatever the outside temperature, which determines that the procedure of Accession can be reproduced exactly both day and night, and both in summer and winter.

It is then introduced into a regulator of tension 20 the first beam 16 of metal tapes coming from the tunnel heating 18. This voltage regulator 20 allows to apply a longitudinal tension identical to all the tapes members of this first beam 16. For this purpose, each of the Metal tapes are trapped to friction between two skates driven against each other by elastic means that can be regulated through screws. In this way, the tensile stress exerted on each of the belts Metallic can be regulated and adjusted to the same intensity to each of such tapes that are part of the six pairs of metal bands integrating the beam 16.

Next, and it is at this point that they perform precisely the armed bands in parallel, adhere to the same time the six pairs of metal tapes, respectively, on six paper guides guided in translation, which constitute a second beam 22.

This second beam 22, consisting of six tapes of paper that come from six reels 24 installed in a supplier 25 located at the back of the process production. Paper tapes in this case have a width 51 mm The second beam 22 of six paper tapes is therefore dragged in countercurrent translation to the post of coupling 26. This post has a lower part that it crosses the second beam 22, first passing through a tunnel of paper heating 28 and then through a regulator of paper tension 30 composed of three parallel rollers that They form a zigzag.

The paper heating tunnel 28 allows reduce its water content, so that the Further adhesion is carried out in better conditions. On the other hand, The paper tension regulator 30 can be regulated by modifying the relative position of the three rollers, in order to adjust the longitudinal tension of the six paper tapes.

Then, the second beam 22 is guided, always countercurrently, through a tail input station 32. This position is integrated by a battery of nozzles, six nozzles in this case, one for each of the paper tapes , each of which is intended to cold extrude a dispersed glue or not in a solvent, on one of the faces of the corresponding paper tape, over a width that is centered on the longitudinal axis of said tape. In order to supply a certain amount of glue to each of the nozzles corresponding to the surface of the paper, the glue pressure in said nozzle can be regulated electronically by making it depend on the speed of circulation of the paper tapes and , consequently, of the speed of production of the band
navy.

From the moment when the paper tapes that integrate the second beam 22 are impregnated with the tail, these tapes are guided, now in the same direction of movement of the first beam 16 of metal belts, by means of dragging, receiving each of said paper tapes, on its surface glued, a pair of metal tapes at the level of the post coupling 26. The metal tapes are applied on the corresponding paper tape, being separated and noticeably located on either side of a central line of this tape of paper, in parallel positions. From the moment the tapes metallic are applied on the corresponding paper tape, the set is compressed between two pressure rollers, to increase the effort or contact pressure between those indicated elements, thus improving the effectiveness of adhesion.

The armed band carried out in this way, and by extension in this case the six armed bands made in parallel, they are directed towards a final heating tunnel 34, to contribute to the evaporation of the solvent from the glue, thereby improving the effectiveness of adhesion. Then are marked and the date on the armed bands is recorded, by example, by means of a system of printing nozzles by inkjet or by means of appropriate buffers, performing all this through a marking post 36.

Then the armed bands go through a clamp tool 38 and a cutting tool 40, to reach a shaft of winding 42 that is part of a conditioning assembly automatic 44 which will be described later with reference to Figure 2

It is difficult to control the speed of trimmed of the metal sheet 12 at the trim post 14 in function of the adhesion speed at the level of the fixing post 26, given that the dimensions of the metal tapes that integrate the first beam 16 may vary longitudinally because of the heating. For this reason, a speed regulator is planned, that has not been represented, after the cut post 14, arranged to print a ripple to the beam 16 of tapes metallic, between two certain previous crossing points. To the the beam 16 is guided between said two points and a subsequent point, the level difference between those points and this one can be measured, in view of regulating the trimming speed based on this level difference.

As regards the set of automatic conditioning 44 shown in the Figure 2, after the grip tool 38 and the cutting tool 40, said set allows continuous conditioning, and over all in an automatic way, the armed bands. In this way, the whole procedure can be governed by an automaton programmable eventually coupled to a microcomputer.

First, the grip tool 38 allows you to grab the set of the six armed bands, dragging them in translation by means of a car 46, in the direction of the arrow F. Conditioning assembly 44 also comprises a device forming a drum 48 of horizontal A axis and perpendicular to the armed bands in production. This device 48 is equipped with two winding trees, one of them 42 has already been described above, while the other 49 occupies a diametrically opposite position. These two motor trees 42, 49 are equipped with two mandrels, a first mandrel 50 and a second mandrel 52, which protrude parallel to the corresponding A axis horizontally and perpendicularly with respect to the armed bands in production process; the mandrels 50, 52 they extend perpendicularly with respect to the axis of advance of the armed gangs so that the latter can roll over around them. In addition, each of the mandrels 50, 52 it has a longitudinal slit arranged to receive one of the free limbs of trimmed armed bands, and a eccentric pressure to block these free limbs cropped

Under these conditions, in a phase of putting in gear, when the chucks 50, 52 are empty, the drum 48 is dragged in rotation so that the first mandrel 50 is cut, at the level of said longitudinal slit, by the plane central defined by the armed bands that cross the tool of clamp 38. Next, clamp 38 that holds the six bands armed is dragged into mandrel 50 to fit the trimmed free limbs of the armed bands into the aforementioned longitudinal slit, towards the eccentric of immobilization At this time, this eccentric pressure is governed to imprison the trimmed free limbs of the armed bands in a fixed position with respect to mandrel 50. The grip tool 38 is then deactivated and recovers its initial position, while mandrel 50 is dragged in rotation through its corresponding motor shaft, so that determines the drag of the six armed bands, winding them around the mandrel 50 and forming six reels 56 of band navy.

When it has already been wound on the mandrel 50 the amount desired in each case of armed band, ceases the rotation movement and a pressure arm 58 is applied against the bands armed on the rollers 56, and the cutting tool 40 and clamping tool 38, in order to hold in a fixed position the armed bands and trim them. Then the drum 48 is dragged in a 180 degree rotation, to swap the two mandrels 50 and 52, then being set at position to the second mandrel 52 the new free limbs trimmed from the armed gangs, it can now restart the winding, while it is possible to extract the six reels 56 of the first mandrel 50, deactivating the eccentric of fixation, and this period of time is not counted, since The production of armed gangs continues. When about the second mandrel 52 the amount of armed band reached is reached planned, and when the first mandrel 50 has already been released from all reels 56 it contained, the same can be carried out permutation operation of the two mandrels.

In addition, in order not to stop the process of production of armed bands, during cutting and permutation of the mandrels 50, 52, a system of accumulation of armed gangs, after the final tunnel of heating 34. This accumulation system can be found constituted, for example, by two five-roller trains overlays whose relative position can be varied, being the armed bands driven between these rollers, from a train of rollers towards the other roller train, alternatively, to constitute five parallel round trips. In these conditions, when the grip tool 38 is in its active position and when the operation of permutation of the mandrels 50, 52, the severed limb of the armed bands are still, and the referred roller trains are separate from each other to allow the accumulation of the bands armed, while the production of them continues. From the moment when the permutation of the mandrels has already occurred 50, 52 and when the process of winding, the amount of armed bands that has accumulated between the two roller trains is then rolled over the mandrel that is in operating position, whose speed peripheral is greater than the linear speed of adhesion of armed bands, while the two roller trains approach Again from each other.

Claims (10)

1. Procedure for the production of bands armed (33), presenting these armed bands two marginal areas rigid intended to be folded longitudinally one towards the another to define an edge, these bands being available armed (33) if applied on the angle formed by two construction panels, whose procedure belongs to the type of according to which at least one paper tape is supplied (22) and at least a pair of metal tapes (16) and drag jointly towards each other the referred paper tape and the expressed pair of metal tapes, being attached this pair of metal tapes on the indicated paper tape, to a certain distance from each other and in parallel senses; characterized in that it comprises the following stages:

-

be supplies a metal band (12);

-

be simultaneously drag said metal band (12) and the referred paper tape (22);

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be continually cleaves the indicated metal band (12) to obtain two trimmed metal half bands (16); Y

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be separate the two referred metal half-bands cut to supply the indicated pair of metal tapes, so that these metal tapes are adhered to said paper tape (22), obtaining with it the corresponding armed band (33).

2. Method for the production of armed bands according to claim 1, characterized in that a plurality of paper tapes (22) are supplied, these paper tapes being dragged together and in parallel, and because a continuous metal sheet (12) is supplied , this metal sheet being split into a plurality of pairs of metal tapes (16) so that each of these pairs of metal tapes can finally be adhered on each of the said paper tapes. 3. Procedure for the production of armed bands according to claim 1 or 2, characterized in that the cut-out metal half-bands (16) are heated before adhesion. Method for the production of armed bands according to any one of claims 1 to 3, characterized in that the said paper tape (22) is dragged through means forming a zigzag (30) to regulate the longitudinal tension of said paper tape (22). 5. Process for the production of armed bands according to any one of claims 1 to 4, characterized in that said paper tape (22) is heated before adhesion of said metal tapes (16). Method for the production of armed bands according to any one of claims 1 to 5, characterized in that the glue is extruded on said paper tape (22) before applying said metal tapes (16) on said paper tape for jointly adhere said metal tapes and said paper tape. Method for the production of armed bands according to any one of claims 1 to 7, characterized in that a substantially identical longitudinal tension is applied on each of the two cut-out metal half-bands (16). 8. Process for the production of armed bands according to any one of claims 1 to 7, characterized in that the said pair of metal tapes (16) and the indicated paper tape (22) is heated after having joined them together.
tea. 9. Process for the production of armed bands according to any one of claims 1 to 8, characterized in that a certain amount of said armed band (33) is wound simultaneously on a first support (33) after the indicated one has adhered simultaneously paper tape (22) and the said metal tapes (16), and because said first support (50) is replaced by a second support (52) in a substantially continuous manner, when the said determined amount of armed band has been wound, after said armed band (33) has been trimmed and coupled to said second support (52), so that the indicated amount of rolled and cut armed band is ready to be conditioned in hidden time. Method for the production of armed bands according to any one of claims 1 to 9, characterized in that the said cut-out metal half-bands (16) are guided towards an accumulator and because the said metal band is trimmed at a speed regulated by the amount of trimmed metal half bands (16) that have accumulated in the expressed accumulator.