EP0890687B1 - Method of making a roof ridge strip - Google Patents

Abstract

A device is provided for feeding a metal strip to a pair of meshing form rollers for formation of the corrugations, together with at least two groups multiple tools for production of ventilation apertures. The two groups of multiple tools are arranged in the running direction of the metal strip behind the form rollers (2,2') and comprise circulating swarf-removing or cutting tool sets (15,15'). The tool sets are arranged at such a height in relation to the running corrugated strip that they remove at the corrugation peaks a swarf with a thickness which is at least somewhat greater than the strip thickness. The circulating cutting tool (15,15') are sufficiently adjustable in relation to the running, corrugated strip that slot-shape ventilation apertures (12,12') are produced in the area of the corrugation peaks extending in the running direction.

Description

The invention relates to a method for the continuous production of corrugated, metallic Ridge and burr sealing strips, which are to be placed on the ridge or ridge batten Center strip, with perforated ventilation strips on both sides have adjoining edge strips by a metal strip from a reel subtracted and between two transversely to the direction over at least the width the metal strip extending forming rollers for molding the waves passed and further wherein the metal strip in the region of the ventilation strips by means of multiple tools provided with a plurality of small cross-section vents are.

Ridge and flash sealing strips of the aforementioned type are on site in roll form used. Before placing the cover of the roofing, the role with the center strip on the ridge or ridge slats laid and along the same unrolled. The adjoining the median strip adjoining ventilation strips with their perforation for ventilation of the roof space and are with their edge trim, the are provided with adhesive traces attached to the roof panels. This will be on the one hand a sufficient seal in the area of the ridge, on the other hand, but also a adequate ventilation is possible, whereby the perforation must be constructively designed that snow and water can not penetrate into the loft.

From a technical point of view, ridge and flash sealing strips are particularly advantageous Metal, e.g. Aluminum, copper, zinc, lead or the like, which are absolutely weather-resistant and have a long life. Furthermore, such sealing strips have proven, which are corrugated or pleated transversely to its longitudinal extent. In spite of the stabilizing shaft to ensure a flawless overlay on the ridge batten and to allow easy adaptation to the roof angle, are on both sides of the Mittelstreifens bending beads molded. At different slat width - she is with 30 or 50 mm standardized - to be able to use the same median strips are at each Side of the median strip two bending beads arranged, which among themselves a corresponding Have distance.

First and ridge sealing strips made of metal are so far produced in the manner that withdrawn placed on a reel metal strip and first by means of two groups of punches the ventilation holes in the two ventilation strips be punched out. Then it goes through with the vents provided with metal tape a pair of forming rollers, which form the shaft. After that be applied along the edge strips adhesive marks and then from a peelable strip material, e.g. a paper strip, covered. In the end the pre-fabricated metal strip is wound up on a spool.

While molding the shaft at high speed of the tape of 10 Up to 12 m / min can be punching at much lower speed be carried out from 2 to 3 m / min. This running speed thus determines the Performance of the machine. For this reason, both process stages are already been separated, but with double setup, work and handling times incurred, the Overall, therefore, the process is very cost-intensive.

The invention is based on the object, the aforementioned method to develop further in terms of performance and to propose a device with much higher power than the known device works.

The problem is solved in procedural terms by the fact that in the direction of travel of the metal strip after molding the shaft through the ventilation holes Machining the wave crests in particular by means of circulating Cutting tools such as saws or cutters are made.

There are today a variety of disc-shaped cutting tools known with working at high speeds with a long service life. Such cutting tools allow - in connection with the measure, the vents in the area of the wave crests to produce in a continuous process, a high working speed, the approximate in the range of working speed during plastic forming by means of the forming rollers lies. Compared to the conventional method, the performance can at least be tripled. This results in a reduction in manufacturing costs and compared the separate way of working a reduction of set-up, working and handling times. The entire production takes place in a single pass from the raw material to the final product. Furthermore, the reliability with respect to the punching the heavily used and therefore often failing punches considerably elevated. The downtime is reduced by about 90%.

By machining, the ventilation openings in the form of slots educated. This shaping allows the formation of relatively large cross sections for Fulfillment of the roof ventilation regulations according to DIN 4108, Abs. 3, with nonetheless Narrow slit width, what the tightness against drift snow and driving rain (Surface tension) is significant.

The ventilation holes can be made by machining synchronous machining or by Counter-rotation machining can be made. Preferably, the ventilation holes by a reverse machining and subsequently or previously by a synchronous machining produced.

In a further preferred embodiment, the ventilation holes are parallel Saw cuts generated.

To solve the problem in terms of device technology, the invention of a known device consisting of a device for supplying a Metal strip, such as a reel with the wound metal strip, and a pair of intermeshing yarns arranged behind it in the direction of travel Forming rolls for forming the waves and with at least two groups of Multiple tools for cutting the ventilation openings consists.

This known device is inventively further developed in that the two groups of multiple tools in the direction behind the forming rollers are arranged and consist of rotating cutting tool sets, with respect to of the incoming, corrugated band are arranged at such a height that they to remove one or more shavings from the wave crests with a thickness that is at least sparse is greater than the tape thickness.

The inventive device thus operates in a continuous process with a Forming station with the forming rollers and a processing station with the cutting tools. The individual cutting tools of the Tool set each produce a cut on the wave crests, the Depth of cut is greater than the tape thickness, so that an opening is formed. Their width is determined by the width of the cutting tools, while their length is determined by the Delivery or the immersion depth in the wave crests depends.

It is a wave height of the metal strip between, for example, 1.5 and 5 mm intended. From the wave height depends the possible stretchability of the metal strip in Longitudinal, so the adaptability to roof tiles, from. For strongly corrugated roof tiles is a larger wave height of the metal strip, for example, 5 mm necessary, at weakly corrugated roof tiles may have a wave height of the metal strip of For example, already sufficient 1.5 mm, a good intermediate value is allowed Wave height of the metal strip of 3 mm.

Preferably, the rotating cutting tools are tapered with respect to the tapered, Wavy band so far undeliverable that in the area of the wave crests in Running direction extending slot-like ventilation openings arise. The slot length is determined exclusively by the delivery of the cutting tools, the if necessary can also be varied.

The cutting wheels can be used as circular saw blades, side milling cutters or as reaming wheels be educated. The selection depends among other things on the desired Working speed, punching time and the metal material to be processed.

In a further preferred embodiment, two groups of rotating cutting tools arranged one behind the other in the running direction, one of them in synchronism, the Others works in the opposite direction (which advantageously with the counter-rotation and then the synchronous machining takes place).

In this preferred embodiment it is ensured that any remaining Burrs taken from the first processing stage in the second processing stage be so that the vents are largely free of burrs and thus a optimal flow is ensured.

Appropriately, the two are transverse to the direction of each other side by side arranged groups of cutting tools on a common drive shaft arranged, said drive shaft with that of the second group via a Reversing drive can be driven speed synchronous.

In a further preferred embodiment it is provided that at least in the running direction first group of cutting tools on the opposite side of the metal strip a counter-pressure roller is assigned, which is the metal band in the area between supports the cutting tools. This counter-pressure roller can, for example their grooves relative to the cutting tools grooves.

Due to this design, the metal strip, despite the weakening in the field Ventilation openings sufficiently supported, on the one hand to avoid the Cutting pressure, on the other hand, to obtain the waveform properly.

The counter-pressure roller, which may also be formed into two parts and one each Associated with cutting tool groups, can also serve as a transport roller. she is then advantageously synchronously driven with the forming rollers while the Cutting tools driven at least the first group at a higher speed are.

Conveniently, each group consists of ten to eighteen Cutting tools, so that each ventilation strip with ten to eighteen parallel Rows of vents is provided.

The cutting width of the cutting tools is preferably between 0.5 and 1.5 mm, which in turn determines the slot width.

The slot length can be adjusted by the fact that the cutting tools with respect Metal band are so far undeliverable that the ventilation slots generated a length from 1.0 to 4.5 mm.

In the apparatus according to the invention it is further provided that at least one of Forming rolls at the transitions of the center strip to the two ventilation strips Beading profiles for introducing at least two longitudinal bending beads wherein the molding roll is preferably on both sides of the center strip has at least two spaced bead profiles. in continue Advantageous design, the forming rollers are replaceable on the drive shaft arranged so that they replaced with wear or against molding rolls with other profile can be replaced.

The cutting tool sets are preferably arranged in sets Tool disks, which can be replaced individually or in groups on their drive shaft are arranged. Thus, individual tool discs can wear replaced or the entire tool set against a set of others Working width can be replaced.

Finally, the counter pressure roller can be exchanged on its drive shaft and against counter-pressure rollers with other distance of the circumferential grooves be interchangeable.

Fig. 1 eine schematische perspektivische Draufsicht auf die wesentlichen Bauteile der Vorrichtung.

Fig. 2 eine Detail-Seitenansicht der Schneidwerkzeug-Gruppen;

Fig. 3 einen Schnitt A-A' und

Fig. 4 einen Schnitt C-C'.

The invention will be described with reference to an embodiment shown in the drawing. In the drawing show:

Fig. 1 is a schematic perspective plan view of the essential components of the device.

Fig. 2 is a detail side view of the cutting tool groups;

Fig. 3 is a section AA 'and

Fig. 4 is a section C-C '.

The apparatus of FIG. 1 has a reel, not shown, of which the Metal band 1 runs continuously. The metal band is at its longitudinal edges by means Shoes 23, 23 'out on an adjusting spindle 24 for varying the bandwidth are stored. Such guide shoes can along the direction of the belt on be arranged several places. From the tapered metal strip 1 is a Firstund Gratabdichtungsstreifen l'made, which transversely to its longitudinal extent with a wave profile 11 is provided. He has a median strip 7 to rest on the Ridge batten up. On both sides of the central strip 7 are at a distance from each other two Bending beads 3, 4 and 3 ', 4' arranged between them a tolerance range 8, 8 ' leave to adapt to different width ridge battens. A the two bending beads then serves to kink the strip according to the Roof pitch. At the bending beads to the outside close ventilation strips 10, 10 ' with ventilation openings 12, 12 ', which in the region of the wave crests of the waves 11th are arranged.

The tapered metal strip 1 first passes between two forming rollers 2, 2 ', the rotate synchronously and at the same time serve as transport rollers. They point to theirs Mantel an axis-parallel, gear-like profile, by means of which the shafts 11 in the Sheet metal be formed. On both sides of the central strip 7, the forming rollers 2, 2 'bead profiles 5, 6 and 5', 6 ', which the bending beads 3, 4 and 3', 4 ' molding.

In the direction behind the forming rollers 2, 2 'are in the illustrated embodiment below the corrugated metal band - two groups of circumferential Cutting tools 15, 15 'arranged on a common drive shaft 14, the the ventilation openings 12 'in the form of slots by machining produce. The cutting tools only attack in the area of the wave crests, wherein the slot length through the feed path of the cutting tools 15, 15 ' can vary. The width of the vents 12 is determined by the width of the individual Cutting tool determines.

In the running direction behind the first group of cutting tools 15, 15 'sit on one Drive shaft 16 two further groups of cutting tools 17, 17 '. At least the first group of cutting tools 15, 15 'is a counter-pressure roller 27th Assigned whose profile 28 (Fig. 4) substantially to that of the forming rollers 2, 2 ' corresponds and which is driven synchronously with the forming rollers. With this profile the wave crests are supported between the cutting tools. In the field of Cutting tools themselves is the counter-pressure roller 27 either with a shortened Profile height 29 (FIG. 3) or circumferential grooves provided, in which the cutting tools 15, 15 ' can intervene.

The disk-shaped tools 15, 15 'or 17, 17' of the two groups of Cutting tool sets can be used as circular saw blades, disc cutters or Broaching be formed. As shown in FIG. 2, the cutting tools work 15, 15 'of the first group in the opposite direction by the drive shaft 14 against the Running direction of the metal strip rotates while the cutting tools 17, 17 'of two groups arranged behind it work in synchronism. That way the burrs 13 formed by the first group during processing are of the second Group of cutting tools removed so that burr-free, slit-like Ventilation openings 12, 12 'are obtained. In the direction behind the cutting tool groups 15, 15 'and 17, 17' are above the metal strip and close to the Longitudinal edges of the same cassette 18, 18 'for receiving a liquid adhesive arranged. The adhesive is from the cassettes in the form of a glue trace 20, 21st issued.

In the direction behind the cassettes 18, 18 'cover strips 21, 21' on a spool housed, the withdrawn in the direction and by means of pressure rollers 22, 22 'on the Adhesive trace are pressed. The endless strip 1 'thus obtained becomes wound on a spool, not shown, of which the sealing strip in rolls desired length can be deducted.

Claims (17)

1. Method of endlessly producing corrugated, metallic ridge and arris sealing strips, which include a central strip (7) to be placed on the ridge or arris batten, perforated ventilation strips (10, 10') communicating with said central strip on both sides, and edge strips communicating with said ventilation strips, wherein a metal strip (1) is conducted between two shaping rollers (2, 2'), which extend transversely relative to the direction of travel over at least the width of the metal strip, for forming corrugations, and wherein also the metal strip is provided with a plurality of ventilation openings (12, 12') of small cross-section by means of multi-purpose tools in the region of the ventilation strips, characterised in that, when viewed with respect to the direction of travel of the metal strip after the formation of the corrugations (11), the ventilation openings (12, 12') are produced by machining the corrugation peaks by means of rotatable metal-cutting tools (15, 15').
2. Method according to claim 1, characterised in that the ventilation holes (12, 12') are produced by a contrarotating operation and by a synchronising operation.
3. Method according to claim 1 or 2, characterised in that the ventilation holes (12, 12') are produced by parallel saw cuts.
4. Apparatus for the endless production of corrugated, metallic ridge and arris sealing strips, which include a central strip (7) to be placed on the ridge or arris batten, perforated ventilation strips (10, 10') communicating with said central strip on both sides, and edge strips communicating therewith, said apparatus comprising a means for supplying a metal strip (1) to a pair of intermeshing shaping rollers (2, 2'), which are disposed behind said metal strip when viewed with respect to the direction of travel of the metal strip, for forming the corrugations, as well as having at least two groups of multi-purpose tools for producing the ventilation openings (12, 12'), characterised in that the two groups of multi-purpose tools are disposed behind the shaping rollers (2, 2'), when viewed with respect to the direction of travel of the metal strip, and comprise sets of metal-cutting or cutting tools (15, 15') which, with respect to the corrugated strip being introduced, are disposed at such a height that, at the corrugation peaks, they remove a chip having a thickness which is at least somewhat greater than the thickness of the strip.
5. Apparatus according to claim 4, characterised in that, with respect to the corrugated strip being introduced, the rotatable cutting tools (15, 15') can be advanced to such an extent that slot-like ventilation openings (12, 12'), which extend in the direction of travel, are produced in the region of the corrugation peaks.
6. Apparatus according to claim 4 or 5, characterised in that the cutting tools (15, 15') are in the form of circular saw blades.
7. Apparatus according to claim 4 or 5, characterised in that the cutting tools (15, 15') are in the form of side-milling cutters.
8. Apparatus according to claim 4 or 5, characterised in that the cutting tools (15, 15') are in the form of broaching wheels.
9. Apparatus according to one of claims 4 to 8, characterised in that two groups of rotatable cutting tools (15, 15'; 17, 17') are disposed one behind the other when viewed with respect to the direction of travel, one group operating in the opposite direction, and the other group operating in the same direction.
10. Apparatus according to claim 9, characterised in that the first group of cutting tools (15, 15'), when viewed with respect to the direction of travel of the metal strip, operates in the opposite direction, and the second group (17, 17') operates in the same direction.
11. Apparatus according to one of claims 4 to 10, characterised in that the two groups of cutting tools (15, 15'), which are disposed adjacent each other transversely relative to the direction of travel, are situated on a common drive shaft (14).
12. Apparatus according to one of claims 4 to 11, characterised in that at least one group of metal-cutting or cutting tools (15, 15') on the oppositely situated side of the metal strip (1) has associated therewith a counterpressure roller (27) which supports the metal strip in the region between the metal-cutting or cutting tools (15, 15').
13. Apparatus according to claim 12, characterised in that the counterpressure roller (27) has, on its periphery relative to the cutting tools (15, 15'), grooves (29) which are adapted to said tools.
14. Apparatus according to one of claims 4 to 13, characterised in that the counterpressure roller (27) and the shaping rollers (2, 2') are driven synchronously.
15. Apparatus according to one of claims 4 to 14, characterised in that the cutting tools (15, 15') of at least the first group are driven at a higher speed than the shaping rollers (2, 2') and the counterpressure roller (27).
16. Apparatus according to one of claims 4 to 15, characterised in that at least one (2) of the shaping rollers (2, 2') has bead profiles (5, 5') at the transitions between the central strip (7) and the two ventilation strips (10, 10') for the introduction of at least two longitudinally extending bending beads (3, 4, 3', 4').
17. Apparatus according to claim 16, characterised in that the shaping roller (2) has, on both sides of the central strip (7), at least two bead profiles (5, 5'; 6, 6') which are disposed with a spacing therebetween.

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