EP2066484B1 - Device and method for the producton of a roof tile with at least one water barrier - Google Patents

Description

The invention relates to a device for producing roof tiles with at least one water barrier according to the preamble of patent claim 1 and a method for producing such roof tiles.

In the manufacture of roof tiles by the extrusion process, a fresh concrete layer is applied as a continuous belt on a conveyor belt of abutting lower molds of equal length conveyed at a constant speed, which is shaped on the upper side by molding tools of the usual roofing surface contour. The continuously applied fresh concrete layer is subsequently cut in a cutting station at the end of each lower mold by means of a cutting tool designed as a knife so that each lower mold carries a single roof tile blank ( DE 35 22 846 A1 and DE 22 52 047 C3 ).

According to the DE 35 22 846 A1 the additional measure is taken that the Dachsteinrohling then cured in a drying chamber lying on its lower mold and then provided with a surface coating.

Known is a cleaning roof panel with metal particles for keeping clean building roofs, in particular for antifouling, which are provided at least in the lower part of the water surface discharge surface of the plate ( DE 297 05 738 U1 ). These metal particles are placed upright in the plate surface.

In order to cover a sloping roof with such roof tiles impact rain, it is necessary that the adjacent in a first-eaves line roof tiles are laid overlapping. The respective overlap length is dependent on the respective roof pitch, i. With a very strong roof pitch, the overlap can be chosen to be lower than at a very low roof pitch.

However, it has also taken constructive measures in which the Dachstein is provided on its underside at the foot edge with transverse ribs. That's the way out DE 35 22 846 A1 well-known sub-forms equipped with recesses on their transverse edges, so that the fresh concrete pressed into these recesses at the head-side edge of the roof tile blank suspension noses and at the foot-side edge transverse Foot ribs forms. In this way, the first-sided roof tile can be suspended during installation with his hanging noses on a roof batten and placed with his foot ribs on the surface of the Dachsteins adjacent eaves. Due to the foot ribs, this creates a kind of labyrinth in the overlapping area of the roof tiles, which counteracts the input of rainwater.

The use of these tiles, however, is problematic for roofs with a slope of less than 22 °, because due to the low roof pitch a very large overlap length of the roof tiles is required. Consequently, a very high number of parallel rows of roof tiles must be laid between ridge and eaves. Due to the high demand for roof tiles and the creation of a roof slat construction adapted to the number of roof tile rows, the material and labor costs increase considerably. Buildings with very low roof pitches are therefore often with large-sized, cheaper and lighter roofing materials, such. B. sheet metal or fiber cement panels covered.

It has therefore begun to provide the roof tiles on their upper side in the region of their head-side edge with a water barrier, which prevents the input of driving rain. In this way, the overlap of the roof tiles can be significantly reduced, so reduce the material and labor costs.

Thus, a roof stone on concrete or plastic base is known, in which transversely to the longitudinal direction, starting from Längsfalz over the first wave trough and the first corrugation and the second wave trough away to the height of the second corrugation, at a distance of the minimum coverage of the overlying Dachstein a safety dam is formed against repelling water, blowing rain or flying snow ( DE 1 838 431 U ).

Furthermore, a roof panel is known with opposing side surfaces and with at least one sealing strip, which is arranged on at least one side surface of the plate and extends over it ( AT 27 842 B ). In this case, the plate is adapted so that it can be arranged on a roof so that it partially overlaps an adjacent plate and is partially overlapped even by an adjacent plate, wherein the roof forms a memory under itself and wherein the strip is formed, that it forms a barrier when between the side surface of the roof panel and the opposite Side surface of the adjacent roof panel is clamped. The sealing strip is formed from a strip of vertical synthetic fibers.

In DE 18 12 456 A1 and DE 25 08 551 A1 Methods are described which are suitable for providing the Dachstein blanks resting on their lower molds with a water barrier. In both methods, a water barrier is first formed from a separately provided fresh concrete, which is then then pressed or glued in the region of the top edge on the top of the roof tile blank. The water barrier is designed to be relatively wide, on the one hand to ensure sufficient dimensional stability and on the other hand, a large-scale, cohesive connection.

pamphlet DE 1 300 048 B discloses a device for producing roof tiles with at least one water barrier, according to the preamble of claim 1. This document also describes a method for placing ribs on extruded roof tiles. The supply of the ribs to the punch takes place by means of an eccentric lever with a finger, which takes out in cooperation with a counter spring in each case the lower rib of a cassette and leads in the horizontal under the punch. This stamp performs the function of a setting device and presses the ribs in the concrete strand.

Finally, a method for producing continuous-ribbed concrete roof tiles in a continuous or intermittent extrusion process is known (US Pat. DE 1 126 791 ). In this method, hardened, prefabricated ribs for the cross-profiling of the concrete roof tiles, in particular for the binding of head ribs, in synchronization with the concrete strand placed on this.

However, equipped with the above-mentioned methods with a water barrier roof tiles have the disadvantage that due to the use of different fresh concrete between the roof tile and the water barrier creates a weakening joint that is sensitive to shock and tends to crack.

To eliminate this defect, one is according to GB 664010 in order to mold the water barrier at the top edge of the roof tile blank when cutting the fresh concrete strand into individual roof stone blanks. Dachsteinrohling and water barrier therefore consist of the same fresh concrete. In this way, a good connection between the water barrier and the roof tile can be achieved.

A disadvantage of molding the water barrier directly on the head-side edge of the roof tile blank, however, is that the suspension noses must be arranged on the underside of the roof tile blank with a distance from the head edge to ensure the stackability of the roof tiles. For the production of roof tiles with a water barrier according to GB 664010 Therefore, a separate set of sub-forms is required, and the distance of the hanging nose to the head-side edge causes a significant reduction in the deck length of the tiles. The object of the invention is therefore to provide a device and a method for introducing at least one water barrier in a roof tile available.

This object is achieved according to the features of claims 1 and 21.

The invention thus relates to an apparatus and a method for providing roof tiles with at least one water barrier. With the device, it is possible, a water barrier, which consists of a different material than the Dachstein, in a Dachstein-stone blank to press. The water barrier is after pressing with their edges partly in the area of the watercourse, the middle brim and the lateral fold in the material of the roof tile blank arranged.

According to the invention, a plate-shaped water barrier is used, which is pressed into the roof tile blank. In this case, the water barrier penetrates with its edges partly in the area of the watercourse, the middle brim and the lateral fold in the compact fresh concrete of the roof tile blank, so that the water barrier is mechanically held by the surrounding concrete after curing of the roof tile blank, creating a reliable and durable attachment the water barrier is achieved.

When laying the water barriers of the roof tiles are overlapped in a easterly row each of the foot ribs of the roof tiles in a ridge-side row. The resulting overlap of the roof tiles is in addition to the roof pitch also dependent on the width of the water barrier. Compared to DE 18 12 456 A1 and DE 25 08 551 A1 the unwanted overlap caused by the water barrier is minimized by making the water barrier platelet-shaped. The material thickness of the water barrier should be less than 3 mm. However, since the water barrier for pressing into the compacted fresh concrete requires sufficient rigidity, the material thickness should be more than 0.25 mm. Furthermore, the water barrier should be made of corrosion resistant material.

In contrast to GB 664010 In the method according to the invention, the water barrier is pressed in at a desired distance from the top edge of the roof tile blank, whereby the suspension lugs on the underside of the roof tile blank can maintain their optimum position at the top edge, so that the full deck length can be utilized in roof tiles produced according to the invention. Since the roof tiles can be made on conventional Unteiforrnen also accounts for high investment costs, and the inventive method can be optimally integrated into a Dachsteinring.

The device according to the invention can be arranged, for example, in a Dachsteinring directly behind the Dachsteinmaschine, so that the lower molds are continuously supplied with the Dachsteinrohlingen lying thereon. In this case, the setting device not only performs a relative movement taking place in the direction of the surface of the roof tile blank, but additionally it is at the same speed as the subforms and moved parallel to these. In this way, the fresh concrete of the Dachsteinrohlings is not upset when pressing in the water barrier, and it can be a production cycle of more than 120 Dachstein / minute realize.

Alternatively, however, the Dachsteinrohlinge can also be removed from the Dachsteinring and fed discontinuously to the device according to the invention. In this case, the Dachsteinrohling is stopped below the setting device, so that it only performs a taking place in the direction of the surface of the roofing stone blank settling movement, in which the water barrier is pressed into the fresh concrete.

• Fig. 1 eine Vorrichtung zum Einbringen einer Wassersperre in einen Dachsteinrohling;
• Fig. 2 eine Haltevorrichtung für eine Wassersperre mit der ihr gegenüber liegenden Bestückungsvorrichtung gemäß einem Schnitt A-A der Fig. 1;
• Fig. 3 eine Draufsicht auf einen Teilbereich eines nach dem erfindungsgemäßen Verfahren hergestellten Dachsteins;
• Fig. 4 einen Dachstein mit zwei Wassersperren gemäß einem Schnitt B-B der Fig. 3.

Embodiments of the invention are illustrated in the drawings and will be described in more detail below. Show it:

• Fig. 1 a device for introducing a water barrier in a roof tile blank;
• Fig. 2 a holding device for a water barrier with its opposite placement device according to a section AA of Fig. 1 ;
• Fig. 3 a plan view of a portion of a roof tile produced by the method according to the invention;
• Fig. 4 a Dachstein with two water barriers according to a section of the BB Fig. 3 ,

Fig. 1 shows a device 1 for introducing at least one water barrier in a roof tile. This device 1 has a processing station 2 with a setting device 3, a loading device 4 and a mounting device 5. The loading device 4 has a plurality of water stops 8 to 9 arranged one behind the other in a magazine 6. These water barriers are platelets made of corrosion-resistant material, for example stainless metal or plastic, as in FIGS 3 and 4 is shown in more detail.

Also visible are conveyors 10, 11, for example conveyor belts 10, 11, on which roof tile blanks 12 to 14 are arranged on lower molds 15 to 17.

In this case, only parts of the conveyor 11 and the lower mold 17 and the Dachsteinrohling 14 can be seen. The conveyor 11 is part of a in Fig. 1 Dachsteinmaschine, not shown, which is connected upstream of the device 1 according to the invention. The conveyor 10, however, belongs to the device 1 and has drivers 18, 19, which surround the lower molds 15 to 17. The lying on the lower molds 15 to 17 Dachstein blanks 12 to 14, which consist of compacted fresh concrete, each have an equal distance from each other.

The loading device 4 is used to provide platelet-shaped water barriers 7 to 9 for the placement device 5. For this purpose, the previously arranged directly on a dispensing slot 20 of the magazine 6 water barrier 7 is the dispensing slot 20 by means of an air cylinder 70 having a driver 73, fed and by means of Pushed piston rod 21 of the cylinder 22. Thus, the water barrier 7 is transferred directly into the receiving device 23 of the mounting device 5, as in the Fig. 1 shown. The output of the water barrier 7 is thus similar to the output of a staple from a staple cartridge.

Fig. 1 further shows a carriage 27 to which the jig 3 is attached. This carriage 27 is arranged on rails 24, 25, which run parallel to each other.

The setting device 3 further has a compressed air cylinder 28 with a piston rod 29. Below the compressed air cylinder 28 with the piston rod 29, a holding device 30 is arranged for a water barrier 32.

In order to provide roof tile blanks 12 to 14 with water barriers 7 to 9, first the roof tile blanks 12 to 14 are, for example, according to FIG DE 35 22 846 A1 cut out of a continuous strand of compacted fresh concrete, so that each one Dachsteinrohling comes to rest on the abutting lower molds. In the Fig. 1 is the Dachsteinmaschine, with both the extrusion and profiling of the endless fresh concrete strand as well as the cutting of the same takes place, represented only by their conveyor 11.

After the cutting operation, the lower molds 15 to 17 are already separated from each other in the Dachstein machine, so that the lower molds 15 to 17 on the conveyor 11 each have an equal distance from each other, with which they are transferred to the conveyor 10.

On the conveyor 10, the lower mold 16 is positioned positively with the roof tile blank 13 arranged thereon by applying the driver 19. A relative movement between the lower mold 16 and the conveyor 10 is prevented.

In order to provide the Dachsteinrohling 12 with the water barrier 32, this must occupy a certain position below the jig 3. In Fig. 1 has the on the lower mold 15 arranged Dachsteinrohling 12 taken such a position. In order to bring in the holding device 30 of the setting device 3 arranged water barrier 32 by means of the piston rod 29 in the roof tile blank 12, the piston rod 29 is moved in the direction of the arrow 33. Here, the water barrier 32 is pressed by the piston rod 29 down and pressed into the compacted fresh concrete of the roof tile blank 12. Subsequently, the piston rod 29 by means of the compressed air cylinder 28 is again moved to the starting position, ie in the direction of the arrow 34.

The process just described can also be referred to as "stationary" press-fitting of the water barrier, because in this case the Dachsteinrohling is stopped below the jig 3 and a continuous supply of Dachsteinrohlingen means of the conveyor 10 is not required. This is for example possible if the device 1 of the Dachsteinmaschine is not directly downstream and the Dachstein blanks are taken together with their lower forms of the Dachsteinring. In general, however, the device 1 is integrated in the Dachsteinring, so that the water barrier is introduced during the transport of a Dachsteinrohlings in the direction of the arrow 35.

When the roof tile blank 12 is moved in the direction of the arrow 35 during the introduction of the water barrier 32, then it is necessary for the carriage 27 provided with the setting device 3 to also be parallel to the direction of movement of the roof tile blank 12, i. H. is also moved in the direction of the arrow 35 and, after the water barrier 32 has been introduced into the roof tile blank 12, back to the starting position, d. H. in the direction of arrow 36, is moved.

This is achieved in that the carriage 27, while the compressed air cylinder 28 of the setting device 3 moves its piston rod 29 in the direction of the arrow 33, is moved in the direction of the arrow 35. With the carriage 27, so to speak, the x-speed component of the water barrier 32 is generated, while the y-speed component is generated by the compressed air cylinder 28 of the setting device 3.

In order for the water barrier 32 to be pressed into the roof tile blank 12 in the correct position, the two movements in the direction of the arrows 35 and 33 are coupled with the movement of the roof tile blank 12 in the direction of the arrow 35. This can be z. B. by a crank drive 37, which is shown here only schematically. This crank drive 37 connects, via its two crank arms 38, 39, a drive wheel 40 of the conveyor 10 to the carriage 27 of the setting device 3.

The drive wheel 40 of the conveyor 10, for example, a chain or toothed belt conveyor, is from the same engine, which in Fig. 1 However, not shown, driven as the crank arm 39. The synchronization of the movement of the lower mold 15 with the movement of the jig 3 is designed so that the lower mold 15 is promoted in a revolution of the drive wheel 40 by a distance equal to the length of the lower mold 15 and the distance between two sub-forms corresponds. At the same time it is ensured over the length of the crank arm 38 of the crank drive 37 that the setting device 3 at the time of reaching the same speed as the lower mold 15 is located exactly at the desired position above the head-side edge 42 of the roof tile blank 12. This ensures that the water barrier 32 is correctly positioned in the watercourse of the roof tile blank 12.

By contrast, the carriage 27 performs a reversing movement in the direction of the arrows 35, 36 during a rotation of the drive wheel 40 in the direction of the arrow 41 along the rails 24, 25. It is important that the carriage 27, the setting device 3 at least temporarily moves at the same speed as the transported from the conveyor 10 lower molds 15 to 17 with the Dachsteinrohlingen 12 to 14. The compressed air cylinder 28 of the setting device 3 is characterized by a in Fig. 1 not shown arranged on the drive wheel 40 signal generator, which triggers the movement of the piston rod 29 as soon as the speed of the carriage 27 matches that of the roof tile blanks 12 to 14 and the desired pressing position for the water lock 32 relative position of setting device 3 and roof tile blank 12 is reached. Only in this way is it possible to push the water barrier 32 into the roof tile blank 12 by the movement of the piston rod 29 and to return the piston rod 29 again in the direction 34, without causing the fresh concrete of the roof tile blank 12 to be upset.

Instead of a crank drive 37, the tuning of the movement and the speed of the lower mold 15 and jig 3, for example, via cam gears or servo drives can be achieved, however, in Fig. 1 are not shown. A control is also possible by means of a computer which tunes the movement and the speed of the setting device 3 with the speed of movement of the conveyor 10 to each other. The computer can be transmitted via sensors information about the positions of Dachsteinrohling and slide.

If the water barrier 32 has been inserted into the roof tile blank 12, then the holding device 30 of the setting device 3 must be provided with a new water barrier 8. This happens because the water barrier 8 is pushed out of the magazine 6 via the dispensing slot 20 by means of the piston rod 21 of the air cylinder 22.

The water barrier 8 is transferred into the receiving device 23 of the placement device 5. The mounting device 5 and the holding device 30 are arranged lying in a plane 26, so that the holding device 30 by a in the direction of the arrow 35, d. H. in the direction of the holding device 30, successful movement of the receiving device 23 can be equipped with the water barrier 8.

Since the placement of the holding device 30 can only take place when the carriage 27 is in the starting position with the setting device 3, the movement of the setting device 3 must also be coordinated with the movement of the mounting device 5. This can be z. B. done by a computer that coordinates the movements. Such a computer, which processes the signals from position sensors, is in Fig. 1 but not shown.

In order to ensure a continuous production process, the dispensing slot 20 of the magazine 6 must be continuously supplied with new water spas. For this purpose, a compressed air cylinder 70 is provided, which moves the water reservoirs located in the magazine 6, which is open at the top, by means of a driver 73 to the left in the direction of the dispensing slot 20. As soon as the supply of water barriers in the magazine 6 nears the end, the air cylinder 70 is moved with its driver 73 upwards, and located in the open top magazine 72 water barriers are moved by means of a driver 74 of another air cylinder 69 to the left, where take the position of the previous water barriers 7 to 9.

In the Fig. 1 illustrated device 1 is integrated into the Dachsteinring and arranged directly behind the Dachsteinmaschine so that the Dachstein blanks are fed continuously and at a rate of 120 Dachsteinrohlingen per minute.

In Fig. 1 the method according to the invention is explained only when pressing in a water barrier. As in 3 and 4 is shown, a roof tile 67, however, usually two parallel water courses 80, 84, which are to be provided with water barriers 81, 83. The device 1 can therefore have two identical water-barrier mounts 30, which are arranged next to one another and the distance of the watercourses 80, 84, respectively. The setting device 3 may in this case have a compressed air cylinder 28 whose Piston rod 29 is fork-shaped, so that they can press in a setting process simultaneously two water barriers 81, 83 in the roof tile blank.

Fig. 2 shows the mounting device 5 and the holding device 30 according to Fig. 1 in an enlarged view in a section AA through the carriage 27 and the piston rod 29. Further details of the setting device 3 are not shown for the sake of clarity.

The placement device 5 has a compressed air cylinder 44 with the receiving device 23. In this case, the compressed air cylinder 44 is connected to the receiving device 23 via a piston rod 45. A water barrier 49 is already in the receiving device 23, the z. B. has a magnet 66, with a metallic water barrier 49 is held.

It also recognizes the holding device 30, which is in communication with the carriage 27 of the setting device 3. The carriage 27 has two guide bushes 52, 53, through which the rail 25 is performed. Thereby, the carriage 27 can be moved together with the holding device 30 along the rail 25 in the direction of the arrows 35 and 36, respectively.

The holding device 30 has a main block 54 which is provided with a U-shaped recess into which a fastening device 55 is inserted. On the attachment device 55 there are two movable support arms 56, 57, which by means of connecting elements 62, 63, z. As screws, rivets or bolts are rotatably mounted on the fastening device 55. The holding arms 56, 57 are articulated by means of elastic components on the lateral wall of the U-shaped recess, wherein the holding arm 57 is held by a spring 58 and the holding arm 56 by a spring 59. Evident is also a substantially U-shaped support 60, which is arranged on the fastening device 55 and between the inner sides of the two retaining arms 56, 57. At the free ends of the U-shaped support 60, a water barrier 32 is applied, which is overlapped by the holding arms 56, 57 and pressed.

Now, if the water barrier 32 has been pressed into a roof tile blank, ie has been removed from the holding device 30 by means of the piston rod 29, it is necessary to introduce into the holding device 30, a further water barrier, so that it can then be pressed into a new roof tile blank. This must be done in such a way that the continuous process is not interrupted.

For this purpose, provided with the water barrier 49 receiving device 23 of the mounting device 5 by means of the compressed air cylinder 44 and the piston rod 45 in the direction of the holding device 30, d. H. moved in the direction of arrow 43.

As soon as the water barrier 49 has reached the retaining arms 56 and 57, it spreads with its lateral edges the retaining arms 56 and 57 against the force of the springs 58, 59 in the direction of the arrow 31 or in the direction of the arrow 65 laterally apart.

In this case, the water barrier 49 is pressed by the receiving device 23 to the U-shaped support 60 and held by the lateral edges of the water barrier 49 cross-snapping holding arms 56, 57, so that the water barrier 49 remains in the holding device 30 when the receiving device 23 again is moved back to its original position.

Instead of the mechanical fixation of the water barrier described above, the U-shaped support 60 may include a magnet, which attracts the platelet-shaped water barrier, which then preferably consists of a magnetizable material, away from the receiving device 23 to itself. If the receiving device 23 also has a magnet that holds the water barrier, it is necessary that the magnet of the support 60 is stronger than the magnet of the receiving device 23.

It is also possible to equip the U-shaped support 60 and the receiving device 23 with electromagnets. In this case, the electromagnet, which is located in the receiving device 23, switched off when the water stop 49 comes to rest on the U-shaped support. The electromagnet in the support 60, however, is turned on, so that the water barrier 49 is moved into the holding device 30 and remains there. The water barrier 49 is then in the holding device 30, the receiving device 23 is brought back into the original position and equipped with a new water barrier.

In the in the Fig. 2 shown position of the water barrier 32, the only indicated by dashed lines piston rod 29 is moved into the plane, so that it pushes the water barrier 32 in the roof tile blank.

It is understood that instead of the aforementioned piston rods and compressed air cylinder as the drive means, other drive means can be selected.

Fig. 3 shows a section of a roof tile according to the invention 67 in a plan view. This roof tile 67 has a side water rebate 68 and a middle rim 79, between which a watercourse 80 is arranged. In this watercourse 80, a water barrier 81 is arranged between the middle rim 79 and the side water rebate 68.

Fig. 4 shows a cross section BB through the roof tile 67 according to Fig. 3 , where now also the lateral Deckfalz 82 can be seen. Between this cover fold 82 and the middle brim 79, a further water barrier 83 is arranged. This water barrier is also a thin and elastic plate.

The water barriers 81, 83 have the shape of a trapezium, wherein the lower sides of the trapezoids are pressed into the water streams 80, 84. The oblique lateral edges 85, 86, 87, 88 of the water barriers 81, 83 engage in the water fold 68 or the cover fold 82 and in the middle rim 79.

The long sides of the trapeze are essentially free. The trapezoidal design of the water barriers 81, 83 facilitates their penetration into the fresh concrete. The water barriers are adapted to the particular profile of the Dachstein blanks.

The device according to the invention has been described with reference to the fitting of a roof tile blank. In principle, the device is also applicable to a cured Dachstein, for example, if a slot is milled in the Dachstein before the onset of the water barrier. The milling of such a slot could for example be done with a controllable laser beam. The water barrier could then be wedge-shaped to achieve a clamping action between the slot and the water barrier.

Claims (31)

1. Device for producing roof tiles (12) having at least one water stop (7-9, 32), containing

   a) a magazine (6) for water stops (7-9, 32),

   b) a placement device (5) for transporting water stops (7-9, 32)

   c) a setting device (3) comprising a holding device (30) for inserting water stops (7-9, 32) in roof tile blanks (12-14), characterised in that the setting device is movable parallel to the surface of the roof tiles, and in that the placement device (5) takes up water stops (7-9, 32) from the magazine (6), moves the taken-up water stops (7-9, 32) in a first direction towards the setting device (3) and equips the holding device (30) of the setting device with water stops (7), and the setting device (3) moves in a second direction extending perpendicularly to the first and inserts the water stops (7-9, 32) into the roof tile blanks (12-14).
2. Device according to claim 1, characterised in that the water stops (7-9, 32) are in the form of small plates.
3. Device according to claim 1, characterised in that the setting device (3) generates relative movement (33, 34) between the water stop (7-9, 32) and a roof tile blank (12-14).
4. Device according to claim 1, characterised in that the setting device (3) comprises a piston rod (29) which moves in a plane which is directed towards the surface of the roof tile blank (12-14).
5. Device according to claim 4, characterised in that the piston rod (29) is arranged in a plane which faces an edge of the water stop (7-9, 32).
6. Device according to claim 1, characterised in that a feed mechanism (70, 73) is provided which feeds the water stops (7-9, 32) to a dispensing slot (20) of the magazine (6).
7. Device according to claim 1, characterised in that a loading device (4) is provided which feeds small-plate-shaped water stops (7-9, 32) to the placement device (5).
8. Device according to claim 1, characterised in that the placement device (5) and the holding device (30) are arranged so as to be movable and located in one plane (26) for the transfer of a water stop (7-9, 32).
9. Device according to claim 1, characterised in that the roof tile blank (12, 13, 14) is located on a lower mould (15, 16, 17).
10. Device according to claim 9, characterised in that the lower mould (15, 16, 17) is surrounded by at least one carrier (18, 19).
11. Device according to claim 1, characterised in that the holding device (30) comprises movable holding arms (56, 57) for holding the small-plate-shaped water stop (7-9, 32).
12. Device according to claim 11, characterised in that the holding arms (56, 57) are movably connected to a fastening device (55).
13. Device according to claim 12, characterised in that on the fastening device (55), a support (60) is provided which is surrounded at least in part by the holding arms (56, 57).
14. Device according to claims 11 to 13, characterised in that springs (58, 59) are provided between the holding arms (56, 57) and a main block (54).
15. Device according to claim 13, characterised in that the support (60) is provided with a magnet.
16. Device according to claim 2, characterised in that a conveying means (10) for roof tile blanks (12, 13, 14) is provided, the conveying direction of which extends perpendicularly to the relative movement (33, 34) between the water stop (7-9, 32) and the roof tile blank.
17. Device according to claim 1 and claim 16, characterised in that the setting device (3) is arranged on a carriage (27) which is hooked into a rail (24) extending parallel to the surface of the conveying means (10).
18. Device according to claim 17, characterised in that a drive is provided which moves the carriage (27) in a reciprocating manner (35, 36).
19. Device according to claims 16 to 18, characterised in that the conveying movement of the roof tile blanks (12, 13, 14) is synchronised with the reciprocating movement (35, 36) of the carriage (27), so that said carriage moves at least in part at a speed which corresponds to the conveying speed of the roof tile blanks (12, 13, 14).
20. Device according to claim 19, characterised in that a signal transmitter is provided, which triggers the relative movement (33, 34) as soon as the carriage (27) moves at the same speed as the roof tile blank (12) and the roof tile blank (12) has reached the desired position below the setting device (3) for setting the water stop.
21. Method for producing roof tiles having at least one water stop, comprising the following steps:

    a) equipping a holding device (30) of a setting device (3) with a small-plate-shaped water stop (7-9, 32) by means of a placement device (5), which moves the small-plate-shaped water stop (7-9, 32) substantially in a first direction towards the setting device (3);

    b) providing a roof tile blank (12) below the setting device (3), the setting device being movable parallel to the surface of the roof tile blank;

    c) moving the small-plate-shaped water stop (7-9, 32) by means of the setting device (3) in a second direction, which extends perpendicularly to the first direction;

    d) pressing the small-plate-shaped water stop (7-9, 32) into the roof tile blank (12).
22. Method according to claim 21, characterised in that the water stop (7-9, 32) is moved by means of a piston rod (29), which is movable in a reciprocating manner (33, 34), of the setting device (3).
23. Method according to claim 22, characterised in that the water stop (7-9, 32) is removed from a holding device (30) by means of the piston rod (29).
24. Method according to any of claims 21 to 23, characterised in that the holding device (30) is equipped with a new water stop (7-9, 32) after the water stop (7-9, 32) has been pressed into the roof tile blank (12).
25. Method according to any of claims 21 to 24, characterised in that the placement device (5) is loaded with a new water stop (7-9, 32) after the transfer of the water stop (7-9, 32).
26. Method according to claim 25, characterised in that the water stop (7-9, 32) is removed from a magazine (6) by means of a loading device (4) and fed to the placement device (5).
27. Method according to claim 26, characterised in that the water stops (7-9, 32) stored in the magazine (6) are fed to a dispensing slot (20).
28. Method according to claim 21, characterised in that the roof tile blank (12-14) is transported below the setting device (3) by means of a conveying means (10).
29. Method according to claim 28, characterised in that the setting device (3) is moved in a reciprocating manner (35, 36) substantially parallel to the conveying movement of the roof tile blank (12-14).
30. Method according to claims 28 and 29, characterised in that the reciprocating movement (35, 36) of the setting device (3) takes place at least in part at a speed corresponding to the conveying speed of the roof tile blanks (12-14).
31. Method according to claim 30, characterised in that the reciprocating movement (33, 34) of the piston rod (29) is triggered as soon as the setting device (3) moves at the same speed as the roof tile blank (12) and has reached the position above the roof tile blank (12) desired for setting the water stop (7-9, 32).

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