DE3508849A1 - Roller shutter profile as well as method and device for manufacturing the same - Google Patents

Abstract

Roller shutter profiles (10) made of plastic are usually foamed in a second subsequent manufacturing section. In order to be able to manufacture and foam the roller shutter profiles in one work section, the invention proposes first to extrude the roller shutter profiles (10) in a V-shaped intermediate position with a lateral opening, into which a continuous strand of foaming material is injected before the roller shutter profile (10) is closed by a continuous lateral snap connection (17). <IMAGE>

Description

Roller shutter profile as well as process and

Apparatus for making the same Description The invention relates to a roller shutter profile for a roller shutter curtain for closing wall openings or the like according to the preamble of claim 1. The invention also relates a method for the production of roller shutter profiles made of plastic according to the preamble of claim 9. Finally, the invention relates to a device for manufacturing of plastic roller shutter profiles according to the preamble of claim 16.

The roller shutter profiles mentioned here are those which are extruded from plastic and foamed inside. By foaming is the roller shutter curtain made from individual hooked-together roller shutter profiles ensure better thermal and acoustic insulation of the shutters.

Known roller shutter profiles with foam inside are made in such a way that first the hollow roller shutter profile, which is still empty inside, is finished extruded and then after cutting the roller shutter profiles to the desired length a subsequent foaming of the same takes place in a separate device. This known method of manufacturing the roller shutter profiles thus requires two independent ones Devices and two process steps.

A discontinuous production is therefore necessary.

The invention is therefore based on the object of providing a foam that is easy to foam out To create a roller shutter profile and a suitable method with a corresponding Propose device.

To solve this problem, the roller shutter profile according to the invention the characterizing features of claim 1. The connecting seam allows it, the roller shutter profile retrospectively, d. H. after extruding, close, and although after a foaming material was previously introduced into the still open roller shutter profile has been. As a result, the foaming material is already in the foam to be foamed Inside the roller shutter profile, if this by closing the profile halves on the With the exception of the front sides, the connecting seam no longer comes from the outside having accessible cavity.

Appropriately, only the hollow profile body is between the hook strip on one side and the hook groove on the other side formed two profile halves. In this way there is a lateral, longitudinal Hinge axis for closing the two profile halves between the profile hollow body on the one hand and the hook rail on the other. As a result, the hook strip can be single-walled be designed to save material.

In an advantageous embodiment of the roller shutter profile the connection seam designed as a latching connection. After inserting the foam material As a result, the hollow profile body can easily be inserted into the still open roller shutter profile close by simply pressing the free ends of the profile halves together, by inserting a hook rail arranged on one profile half into a corresponding one trained undercut engages on the other half of the profile.

In another embodiment of the invention, the connecting seam is formed by an adhesive connection from two spaced apart Bars on one (free) edge of a profile half and one corresponding to it trained and arranged bar on the other half of the profile, which when closed Hollow body engages between the webs. By a beforehand between the webs the adhesive applied to one half of the profile creates a permanent connection of the Profile halves.

In contrast to the snap connection, the adhesive connection requires the additional application of an adhesive, but has the advantage that the connecting seam is tight. For this purpose, the connecting seam formed by the latching connection be additionally provided with a seal, for example made of permanently elastic Caulk.

A method for producing the roller shutter profiles according to the invention has the characterizing features of the claim 9 on. Through the It is possible to extrude the roller shutter profile into an open intermediate position ready-mixed foaming components from one open side into the still open one Inject the cavity of the hollow profile body. In contrast to the state of the art the method according to the invention enables the foam components to be filled in continuously in the roller shutter profile during the actual manufacture of the same. The foaming is therefore an integral part of the manufacture of the roller shutter profile.

Since the filling of the foaming components is continuous along the extruded roller shutter profile is a uniform and at the same time continuous Filling of the roller shutter profile guaranteed. Finally, through the open extrusion of the roller shutter profile, simple extrusion forms without a mandrel can be used.

According to a further proposal of the invention, the injection takes place the foaming components into the still open roller shutter profile after it has cooled down. This ensures that the injected (colder) foaming components Do not deform the roller shutter profile and enter into a chemical reaction with it respectively.

a premature foaming of the foaming components occurs during or before the two profile halves of the hollow profile body are closed, the further suggested to warm them up again, preferably to those Places that experience greater deformation when closing, especially in the area a hinge on the side where the two profile halves are connected.

This will close both the profile hollow body and a precise, break-free bending of the plastic material in the hinge area is achieved.

According to the invention, the components of the foaming material are of this type coordinated that a reaction of the as a strand in the open roller shutter profile injected material, d. H. foaming only takes place when the hollow profile body of the roller shutter profile is completely closed and the possibly heated area has cooled down to room temperature again. In this way, the gradually hinders foaming foam does not do the rest of the manufacturing process of the roller shutter profile.

A device for producing a roller shutter profile according to the invention has the characterizing features of claim 16. This is an injection device for the foaming material part of the actual extruder line. This points In contrast to conventional extruder lines, only the additional injection device and a closing device for the openly extruded roller shutter profile. The continuous Foaming of the same takes place without any noteworthy additional expenditure on equipment.

A particularly advantageous device has several, preferably two injection nozzles for the foaming material.

Alternatively, one such injection nozzle takes place at the same time the injection of both foam components into the roller shutter profile. So it is only one injection nozzle in use, while the rest of the injection nozzle is used remains unused for cleaning purposes. This redundant arrangement according to the invention the spray nozzles a continuous use of the device is possible despite the Necessity of regular cleaning of the injection nozzles.

Further features of the device according to the invention relate to the constructive Design of the individual cooling devices as simultaneous calibration devices and the locking device Two embodiments of the invention Roller shutter profile and an embodiment of a device for producing the same is explained in more detail below with reference to the drawings.

1 shows a first exemplary embodiment of a finished roller shutter profile with a snap connection in cross section, FIG. 2 shows a second exemplary embodiment of a finished roller shutter profile with an adhesive connection in a representation according to FIGS. 2, 3 show a schematic representation of a device for production of the roller shutter profile according to the first embodiment, FIG. 4 shows a cross section by an open and non-foamed roller shutter profile extruded in the intermediate position according to the embodiment of FIG. 1, FIG. 5 shows an enlarged cross section by a first cooling device according to the line V-V in FIGS. 3, 6 enlarged cross-section through an injection device with a view of an injection nozzle according to the line VI-VI in FIG. 3, and FIG. 7 an enlarged shown cross section through a second cooling device according to the line Vil-VIl in Fig. 3.

1 and 2 roller shutter profiles are shown, which in a plurality Hooked in a chain like a chain, form a roller shutter curtain for roller shutters.

The embodiment shown in Fig. 1 of a roller shutter profile 10 consists of a central hollow profile body 11, one on a narrow edge side the same in the longitudinal direction continuously arranged hook strip 12 and one on the opposite narrow edge side of the hollow profile body 11 is also continuous arranged hook groove 13. In its interior, the hollow profile body 11 is complete foamed with a foam 14.

The hollow profile body 11 is composed of two profile halves, namely a lower base half 15 and an overlying closure half 16. The base half 15 and the closure half 16 are on their to the hook strip 12 directed narrow edge side formed directly against one another, so in one piece educated. On the side of the hook groove 13 are the base half 15 and the closure half 16 joined together by a snap connection 17. The latter consists of an undercut 18 and a hook 19. The undercut 18 is on the base half 15 in the area the transition of the same to the hook groove 13 is formed. It has one in the longitudinal direction the roller shutter profile 10 continuous angle bar 20 with an L-shaped profile on, the short leg 21 of which is integrally formed on the base half 15 and the longer one Leg 22 is directed approximately horizontally to the base half 15 with a hook 19 directed free end 23. Furthermore, the undercut 18 has a also formed on the base half 15, upright web 24, the distance is arranged in front of the free end 23 of the long leg 22. This is how it arises between the web 24 and the angle bar 20 of the undercut 18 has a passage opening 25 for the hook 19.

The hook 19 is a continuous, in the longitudinal direction of the roller shutter profile 10 extending bar with an L-shaped profile molded onto the closure half 16, namely resiliently by one of the hook groove 13 directed edge of the roller shutter profile 10 outgoing, approximately horizontally directed connecting web 26.

In the snap connection 17 shown, an approximately horizontal, short leg 27 of the hook 19 in a form-fitting manner from below behind the long leg 22 of the angle bar 20. The proportions of the hook 19 and the angle bar 20 of the snap connection 17, which is shown in FIG. 1 for a clear representation Has been chosen arbitrarily, according to the invention is made such that reopening the snap connection 17 is only possible with great effort or not at all.

In Fig. 2 is a second embodiment of a roller shutter profile 28 shown. This differs from the roller shutter profile 10 of FIG. 1 in that that an adhesive connection 29 between the base half 15 and the closure half 16 of the hollow profile body 11 is arranged.

The adhesive connection 29 is formed by in this embodiment two spaced apart, upright webs 30 and one between the bars 30 engaging bar 31. The latter is upright with the closure half 16, namely the connecting web 26 of the same connected.

The parallel webs 30 are molded onto the base half 15. Between the webs 30 protruding upward with their free ends is the one with their free one End downwardly protruding bar 31 by a suitable adhesive, preferably one Hot glue 32, glued to connect the base half 15 to the closure half 16 of the hollow profile body 11 on the roller shutter profile 28.

From Fig. 3 shows a device for the production of roller shutter profiles 10 according to the first embodiment. This points in the direction of extrusion (Arrow 33) successively a per se known extruder 34, a (first) Cooling device 35, an injection device 36, a closing device 37, a (Second) cooling device 38, a reaction section 39 and a cutting device 40 on.

The extruder 34 partially shown has a specially designed (not shown) extrusion mold with which the roller shutter profile 10 in a is extrudable in the intermediate position shown in FIG.

In this intermediate position, the roller shutter profile 10 leaves the extruder 34 with an approximately horizontally oriented base half 15, but an obliquely oriented closure half 16 of the hollow profile body 11. Also the connecting web 26 with the continuous hook 19 is pivoted away from the plane of the closure half 16 in this intermediate position. In this way, the snap connection is created between the undercut 18 and the hook 19 17 a lateral opening 41 for free access to the interior of the hollow profile body 11. In an analog intermediate position, i. H. with a pivoted up compared to the base half 15 Closure half 16, the extrusion of the roller shutter profile 28 of the second takes place Embodiment.

The (first) cooling device 35 shown in FIG. 5 is of this type designed that the roller shutter profile 10 pass through in its intermediate position can. The first cooling device 35 is constructed in a manner known per se two mold halves 42, 43 with one of the roller shutter profile 10 adapted, continuous Contour inside. In addition to a plurality of cooling bores 44, both mold halves have 42 and 43 several suction channels 45 with opening into the contour Suction holes 46 on. These suck the walls of the roller shutter profile 10 in the intermediate position with negative pressure on the contour of the two mold halves 42, 43 of the first cooling device 35 to stabilize the still warm walls of the roller shutter profile 10. The (first) Cooling device 35 thus serves both for cooling and for calibration.

Fig. 6 shows inter alia. the arrangement of two one behind the other Injection nozzles 47 for the foaming material next to the opening 41 of the still open Roller shutter profile 10.

The direction of injection of both injection nozzles 47 is selected in such a way that that it concentrates the fully dosed and mixed components of the foaming material Inject into a corner area of the still open hollow profile body 11 to form a continuous strand 48 of foaming material in the roller shutter profile 10. How As FIG. 3 shows, each injection nozzle 47 is a metering and injection pump 49 and a supply line 50 is assigned.

Part of the locking device 37 is also shown in FIG. 6. This consists of a lower, horizontal support bar 51, which forms the base half 15 from the outside in areas, in particular in the area of the undercut 18, supports. A locking bar 52 is assigned to the closure half 16 from the outside. As FIG. 3 also shows, the locking bar 52 is designed like a jump. Their distance from the parallel support strip 51 is thus reduced in the extrusion direction (Arrow 33) gradually to close the hollow profile body 11 of the roller shutter profile 10. A sliding surface of the closing strip 52 directed towards the closure half 16 can according to the closed state of the hollow profile body 11 to the setting thereby Deformation states of the same, in particular of the connecting web 26, be adapted.

In front of the locking device or with a slight overlap of the same a warming device 53 is arranged in such a way that it heats from the outside radiates onto a part of the closure half 16.

In particular, the heating device 53 is used when closing of the roller shutter profile 10 particularly heavily loaded area in the longitudinal direction extending hinge axis 54 in the region of the approach of the hook strip 12 to the Profile hollow body 11 to be heated.

In the manner described, the shutter profile can also be closed 28 of the second embodiment. Only then is through a suitable one Additional device to continuously supply an adhesive to the adhesive connection 29.

As FIG. 7 shows, the (second) cooling device 38 also has two Mold halves 55 and 56 on. In between there is one in the extrusion direction (arrow 33) continuous contour for the closed roller shutter profile 10 is formed. In the present Embodiment are only in the upper mold half 56 cooling bores 57 and suction channels 58 arranged with transversely directed suction bores 59 in the contour surface. The reason this is due to the fact that the heating device 53 only covers the upper closure half 16 is assigned and thus only this after the shutter profile has been closed 10 has to be cooled down and calibrated.

The reaction path 39 exists in the present exemplary embodiment from a simple continuous conveyor 60. The length of the same is dimensioned such that that the filled in the roller shutter profile 10 reactant enough time to Has foaming. The length of the reaction path 39, that is to say of the continuous conveyor 60, can be 6 m.

Finally, the cutting device 40 follows, which is "on the fly" arranged can be, for separating individual sections from the strand of the roller shutter profile 10 during the continuous further transport of the same. For conveying away the cut to length Roller shutter profiles 10 can be another at a distance behind the first continuous conveyor 60 arranged continuous conveyor 61 are used.

The process sequence in the production of the roller shutter profile 10 is explained below with reference to FIG.

The roller shutter profile 10 is made of a thermoplastic material extruded through the extruder 34 in a laterally open intermediate position. Of the from the extruder 34 freely exiting, open strand of the roller shutter profile 10 is then in a first cooling device 35 from about 165-160 ° C. to about 3Q ° C cooled down with simultaneous calibration. In the still in the open intermediate position from the first cooling device 35 emerging strand of the roller shutter profile 10 is then through one of the two spray nozzles 47 from the side the two Components ready-mixed and dosed foaming material is continuously injected. As a result of the uninterrupted conveyance of the roller shutter profile 10 to the injection nozzles 47 a continuous strand is created in the interior of the still open roller shutter profile 10 48 made of compact foam material.

After the foam material has been injected, the roller shutter profile 10 can be brought from the intermediate position into its final shape by closing of the profile halves (base half 15; closure half 16) of the hollow profile body 11. For this purpose, the strand of the still open roller shutter profile 10 is through the closing device 37 continuously passed through with a gradually tapering opening, wherein the upper, inclined closure half 16 against the rigidly held base half 15 ge is pivoted, the snap connection 17 on the hollow body 11 snaps into place like a zipper. To facilitate closing and to reduce the tension created in the plastic takes place before and, if necessary, during the closing of the roller shutter profile 10 a reheating of the areas to be deformed of the closure half 16 by a heating device radiating onto the sealing half 16 from the outside 53.

Subsequently, the one reheated by the warming device 53 is reheated Closure half 16 is again cooled and calibrated by a second cooling device 38. A cooling and calibration of the base half 15 that was not heated during the closing of the hollow profile body 11 takes place in the present embodiment in the second Cooling device 38, however, does not.

At the earliest after the shutter profile 10 has been closed, preferably but along the reaction path 39, the foam 14 inside the closed Shutter profile 10 formed by the introduced into the still open shutter profile 10 Foaming compound is set so that a delayed chemical reaction between the two Foam components takes place.

Only when the entire roller shutter profile 10 is completely covered with foam 14 is filled, so the chemical reaction of the foaming components is completed and the correspondingly long reaction section 39 has been traversed from the continuously manufactured strand of the roller shutter profile 10 gradually into ready-to-use Lengths ge cut roller shutter profiles 10 separated.

The roller shutter profile 28 according to FIG the second embodiment be made.

Reference number list 10 roller shutter profile 11 profile hollow body 12 hook bar 13 Hook groove 14 Foam 15 Base half 16 Closure half 17 Snap connection 18 undercut 19 hook 20 angle ledge 21 short leg 22 long leg 23 free end 24 upright web 25 passage opening 26 connecting web 27 shorter Leg 28 Roller shutter profile 29 Glued connection '30 Web 31 Strip 32 Hot glue 33 Arrow (direction of extrusion) 34 extruder 35 (first) cooling device 36 injection device 37 Closing device 38 (second) cooling device 39 reaction section 40 cutting device 41 opening 42 mold half 43 mold half 44 cooling hole 45 suction channel 46 suction hole 47 Injection nozzle 48 Line 49 Metering and injection track Pf 50 Supply line 51 Support bar 52 Closing bar 53 Heating device 54 Hinge axis 55 Mold half 56 Mold half 57 Cooling hole 58 Suction channel 59 Suction hole 60 Continuous conveyor 61 Continuous conveyor

Claims (21)

Roller shutter profile and method and device for producing the same Claims 1. Roller shutter profile for a shutter curtain for closing Wall openings or the., From a hollow profile body foamed inside one side of which has a hook strip and on the opposite side a hook groove are arranged to enter the hook strip of an adjacent roller shutter profile, not shown by two profile halves (base half 15; closure half 16), which are formed in one piece on one longitudinal edge of the profile and on an opposite edge (Second) longitudinal edge of the profile with a connecting seam (snap connection 17; adhesive connection 29) are joined together. 2. Roller shutter profile according to claim 1, characterized in that the Profile hollow body (11) made up of two formed as a base half (15) and a closure half (16) Profile halves is formed. 3. Roller shutter profile according to claim 1 and 2, characterized in that the connection seam (snap connection 17; adhesive connection 29) in the area between the hollow profile body (11) and the hook groove (13) is arranged. 4. Roller shutter profile according to claim 1 and one or more of the other Claims, characterized in that the connecting seam as in the longitudinal direction the profile hollow body (11) extending snap connection (17) is formed. 5. Roller shutter profile according to claim 4 and one or more of the other Claims, characterized in that the snap connection (17) on the base half (15) a preferably continuous undercut (18) and on the closure half (16) a form-fitting in the undercut (18) engaging, corresponding has formed hook (19). 6. Roller shutter profile according to claim 4 and one or more of the other Claims, characterized in that the snap connection (17) is a continuous Seal, for example made of permanently elastic sealant. 7. Roller shutter profile according to claim 1 to 3, characterized in that the connecting seam as running in the longitudinal direction of the hollow profile body (11) Adhesive connection (29) is formed. 8. Roller shutter profile according to claim 7 and one or more of the other Claims, characterized in that two spaced apart on the base half (15) from each other, parallel upright webs (30) and on the closure half (16) a bar (31) which extends between the webs (30) and which Bars (30) are glued to the intermediate strip (31), preferably through a hot melt adhesive (32) to form the adhesive bond (29). 9. Process for the production of foamed roller shutter profiles preferably made of thermoplastic material, the former being extruded and then are foamed inside, characterized in that the roller shutter profile (10; 28) is extruded into an (open) intermediate position, a foaming material (strand 48) continuously introduced into the (still open) roller shutter profile (10; 28) and then the roller shutter profile (10; 28) is brought into a (closed) final shape before the foaming material (strand 48) foams up to fill the hollow interior of the roller shutter profile (10; 28). 10. The method according to claim 9, characterized in that the roller shutter profile (10; 28) is extruded so that there is an approximately V-shaped intermediate position of its unilaterally connected profile halves (base half 15; closure half 16) occupies with an approximately horizontal profile half (base half 15) and one at an angle upwardly directed profile half (closure half 16) to form a lateral Opening (41). 11. The method according to claim 9 and 10, characterized in that the roller shutter profile (10; 28) is cooled and / or in the V-shaped intermediate position is calibrated before the PU foaming material (strand 48) of preferably two Components between the profile halves (basic half 15; Closure half 16) of the roller shutter profile (10; 28) still in the intermediate position will. 12. The method according to claim 9 and one or more of the further Claims, characterized in that the roller shutter profile (10; 28) after injection of the foaming material (strand 48) from the intermediate position into the closed Final shape is brought, with prior and / or at the same time a regional heating of the roller shutter profile (10; 28), in particular a profile half to be deformed (closure half 16). 13. The method according to claim 12 and one or more of the further Claims, characterized in that the obliquely upright profile half (locking half 16) is bent towards the horizontal profile half (base half 15) and thereby the the first-mentioned profile half (closure half 16) is heated from the outside with hot air 14. The method according to claim 12 and one or more of the further claims, characterized in that after the shutter profile (10; 28) has been closed, at least the upper profile half (closure half 16) is cooled and / or calibrated and then the components of the previously injected foaming material (strand 48) react chemically with each other to foam the entire inner cavity the roller shutter profile (10; 28). 15. The method according to claim 14 and one or more of the further Claims, characterized in that the foaming material only after the second Cooling along a reaction section (39) reacts and at the end of the same the continuously manufactured strand of the roller shutter profile (10; 28) in corresponding sections of the roller shutter profile 10; 28) is cut to length. 16. Device for the production of foamed roller shutter profiles made of preferably thermoplastic material, in particular for carrying out a Process according to Claims 9 to 15, with an extruder, at least one cooling device and a cutting device, given by the following features: a) at a slight distance behind the extruder (34) is a (first) cooling device (35) arranged, b) an injection device follows behind the cooling device (35) (36) for the foaming material (strand 48), c) of the injection device (36) a closing device (37) for final molding the extruded into an intermediate position Shutter profiles (10; 28) arranged downstream, and d) in the cutting device arranged at the end (40) is a reaction section (39) for foaming the foaming material (strand 48) integrated. 17. The device according to claim 16, characterized in that the (First) cooling device (35) for the simultaneous calibration of the (open) intermediate position extruded roller shutter profile (10; 28) is formed and two mold halves (42, 43) has a central, horizontal dividing plane in which additionally for cooling bores (44) several opening into the contour surfaces, which can be acted upon by negative pressure Suction bores (46) are arranged to support the still warm roller shutter profile (10; 28) using the deep-drawing principle. 18. The device according to claim 16, characterized in that the Injection device (36) at least two laterally next to the (still open) roller shutter profile (10; 28) arranged, into the opening (41) thereof directed injection nozzles (47) has, of which an injection nozzle (47) alternately contains all components of the foaming material (Strand 48) is injected into the roller shutter profile (10; 28). 19. The device according to claim 16, characterized in that the Closing device (37) a horizontal support strip (51) and an overlying, Has jumps-like closing strip (52), the distance between them and the support strip (51) decreases in the extrusion direction (arrow 33) so that the closed Roller shutter profile (10; 28) between the support strip (51) and the closing strip (52) is transported through. 20. The device according to claim 19, characterized in that the Closing device (37) is assigned a warm-up device (53) for warming up a profile half to be deformed (closure half 16) of the roller shutter profile (10; 28), especially from external heat radiation. 21. The device according to claim 16 and one or more of the further Claims, characterized in that the heating device (53) has a second cooling device (38) from two mold halves (55, 56) for the closed roller shutter profile (10; 28) is arranged downstream, wherein an (upper) mold half (56) can be cooled and suction holes (59) has for cooling and calibrating the heated profile half (closure half 16).