FI62708C - FRAMEWORK FOR THE FRAMEWORK OF STRUCTURES AND SYNTHESIS - Google Patents

Description

62708

Method for the production of a layered structure, in particular a fire door Förfarande för framställning av en skiktad struktur, i synnerhet en branddörr

The invention relates to a method for manufacturing a layered structure, in particular a fire door or wall, in which the structure has plate elements which are fastened to each other at least at their edges and which comprises an insulating structure between the plate elements and a stiffening structure in which the plate elements are first cut and .

PVC-plastic-coated steel sheets, which have been used as a shipbuilding interior material for several years, also have advantageous properties as a 10-door material. However, the poor weldability of the coated steel sheet has been an obstacle to attaching the door surfaces to the door frame. The use of plastic-coated panels in Class B fire doors and walls is limited to the cladding of precision-sized rigid doors.

15

The use of precision cut fiber upright rock wool by gluing has increased to the point that it has become the predominant way to make Class B fire doors. The object of the invention is to provide a new manufacturing method which makes it possible to reinforce even plastic-coated surface sheets with stiffeners 20 and enables the use of cheaper insulating sheets and mats.

It is a further object of the invention to provide a new method of making a Class B fire door with good sound insulation values from a plastic-coated or otherwise pre-surface-treated sheet. Such doors are called so-called. dB-into doors. It is known that these dB doors use thin insulation boards and the air spaces between them.

In order to achieve the above-mentioned and later objects, the invention is mainly characterized in that pre-coated metal plates, e.g. with PVC plastic coating, are used as plate elements. on the side of their coatings on the support base and that the fasteners of the plate elements are fastened to said fastening elements by means of nuts, spring plates or the like.

An important advantage of the invention is that the fastening elements can be fastened to the inner surfaces of the plastic-coated or surface-treated plate elements, respectively, so that the coating does not break at all. Thus, doors and other similar structures can be made more advantageously because they are made of pre-coated materials, which are available in a wide variety of coating options. An essential advantage is also that, thanks to the stiffeners fastened according to the invention, carpet or board wool can be used as the insulating material. If insulating plates are used in the structures, these plates can advantageously be fastened by the same fastening elements as the rigid-20 clamps. In addition, the stiffeners in these structures can be arranged to act as spacers which determine the distances between the plate elements. According to the invention, it is also possible to have such structures in which the stiffeners do not form thermally conductive bridges between the base and cover plates.

25

In the following, the invention will be described in detail with reference to some application examples of the invention shown in the figures of the accompanying drawing, to the details of which the invention is in no way narrowly limited.

30

Figure 1 shows in cross-section a class B fire door equipped with a method according to the invention, in which tubular stiffeners are used.

Figure 2 shows a door with a method according to the invention using U-shaped stiffeners.

62708

Figure 3 shows a fire door according to the invention with a Z-shaped stiffener.

Figure 4 shows a door made by the method according to the invention using a sound insulation board between the stiffeners.

Figure 5 shows a door using two sound insulation panels.

10

Figure 6 shows a modification of the structure according to Figure 5.

Figure 7 shows a screw element attached to a plate coated by a butt welding step according to the invention.

15

In the following, the invention will be described specifically with reference to the so-called class B fire doors and sound-insulating for the manufacture and construction of dB doors.

However, it should be emphasized at the outset that the method according to the invention is also suitable for the production of other types of structures using 20 pre-coated metal sheets, in particular with a PVC plastic coating. Such structures may be, for example, fire walls, various other wall and partition elements either in the construction industry or in shipbuilding.

The structures shown in Figures 1, 2 and 3 below are Class B fire doors made of PVC-plastic-coated steel sheets, in which carpeted wool is used as the insulating material.

The doors consist of two plate elements 10 and 20. The plate elements 10 30 and 20 are made of plastic-coated steel plate 10 'and 20'. The plastic-coated sheets are cut and edged, e.g., in substantially the same manner as disclosed in the applicant's FI patent No. 55 967. The sheet element 10 has rectangular folds 11, 12 and 13. The sheet element 20 has folds 21, 22 and 23, respectively. The edge portion 23 has 35 protruding portions 24 cut therefrom. The plate elements 10 and 20 are connected to each other so that the folds 12 and 20, respectively. 13 and 23 come together. The folds 11 and 21 form the side edges of the door at least on their long sides. The short pages are joined together, e.g., as disclosed in U.S. Patent No. 55,967,628,08. The edge of the innermost fold 13 of the plate element 10 comes behind the protruding parts 24 into which it locks. Em. in contrast to Patent No. 35,967, the seam 40 between the folds 12 and 22 comes substantially to its center in the thickness direction of the door structure.

5

According to Figures 1, 2, 3 and 4, the door structure includes a tubular frame 14, which, however, is not necessary in all structures. If necessary, the short sides of the plate element paths 10 and 20 can be fastened, for example, to the horizontal parts of the riveting pipe frame.

10

After the door base and cover plates 10 and 20 have been cut and edged, the door plate elements 10 and 20 are stiffened according to the present invention in a special manner. The plate elements 10 and 20 are stiffened before they are joined together using a special stud welding device 15 which 'fires' the fastening elements 31 on the inner surface of the plates 10 and 20.

The tapping welding, which is a partial step of the present invention, is performed with the plate elements 10,20 positioned against a flat support surface 51.

According to Fig. 7, a fabric layer 50 or other similar sheet material is placed on the support surface 51 as a cushion.

Thanks to the tapping welding method, the flat support base 51 and, if necessary, the padding 51 placed on it, the plastic coating 25 10 '; 20' of the plate element 10; 20 remains intact when welding the fastening elements of the stiffeners.

The tapping welding method uses a gun-like device with which the fastening elements 31 are fired on the mounting base. In addition to annealing, the welding effect in this method is based on the utilization of electric current, e.g. by applying the capacitor discharge method. Thus, a welding joint 30 is formed which does not tear, break or burn the plastic coating 10 'and 20', which is partly achieved by also using a flat substrate 51 and a cushion element 50 in the above-mentioned manner. Due to the plastic coating, e.g. spot welding methods would not be applicable.

When applying butt welding in the application according to the invention, it is mentioned that the plastic coating 10 ', 20' of the plate element 10,20 is supported by the plastic coating 10,50, 51,50, because otherwise the plastic coating deforms or melts, which is not allowed especially when pre-patterned plastic coatings are used.

5 Fastening elements 31, e.g. screws, are "fired" by the described tapping-welding method to predetermined locations through holes in the stiffeners 16,17,18a, 18b, 25,26 and 27. By means of the nuts 32 and the thread 33, said stiffeners are locked to the plate elements 10 and 20. Instead of the nuts 32 and the screws 31 provided with the threads 33, special spring washers or other similar fastening elements can also be used.

Said stiffeners 16, 17, 18a, 18b, 25, 26 and 27 provide the door with the rigidity required for the plate elements 10 and 20, so that it is not necessary to use a filling material to be fastened by gluing, e.g. a commonly used precision cut 'vertical wool', cheaper sheet or carpet wool can be used, which is more advantageous in that it has less combustible binders.

According to Figures 1, 2 and 3, carpet wool 15 is used between the plate elements 10 and 20. According to Figure A, the insulator, in particular the sound insulation, is a plate element 19. According to Figures 5 and 6, two insulating plates 28 are used, between which the sound insulating space 35 .

25

According to Figure 1, the stiffeners are tubes 16 with a rectangular cross-section. According to Figure 2, the stiffeners are U-shaped profiles. According to Figure 3, a Z-shaped stiffener 25 is used. According to Figure A, the stiffener is opposed U-shaped profiles 30 18a and 18b, which are fixed in place by two rows of screws 31.

The edge folds of the profiles 18a and 18b hold the insulating plate element 19 in place. According to Fig. 5, the insulating plates 28 are fastened tightly against the inner surfaces of the plate elements 10 and 20 with threaded pins 31, stiffeners 21 and screws 32. Thus, the plate elements 28 are fixed in place with the same screws 31 with which the stiffeners 26 are fixed. The plate elements 28 thus bonded together with the stiffeners 26 give the plate elements 10,20 sufficient rigidity. The dimension of the stiffeners 26 62708 in the thickness direction of the door corresponds to the size of the gap 35 between the plates 28.

Figure 6 shows a preferred embodiment of a dB door to-5 according to the invention. The elongate Z-shaped stiffeners 27 are fastened with stud-welded screws 31 directly to the plate elements 10 and 20. The fold 27 'of the outer end of the stiffeners 27 fixes the plate elements 28 in place.

The following are claims which, within the scope of the inventive idea defined by it, may vary the various details of the invention.

Claims (9)

A method for producing a layered structure, in particular a fire door or wall, which structure has surface elements (10,20) which are at least at their opposite ends attached to each other and in which structure one intervenes between the panel elements (10). , 20) existing insulating structure (15; 19; 28) as well as a stiffening structure (14, 16,17,18a, 18b, 25,26), in which method the slab elements (10,20) are first cut and edged, characterized as disc elements (10,20) are used fully coated (10 ', 20'), for example, with metal-coated PVC sheets, on the opposite side of the disc elements (10, 20) against the coating (10 ', 20 *) by means of a tap welding method 31), during said tapping welding stage, the disk elements (10, 20) are supported at the location of the tapping welding (30) on their side with coating (10 ', 20') by means of a support base (51) and at said fastening element (31) being secured with nuts, spring washers or 20 such elements stiffen the disc elements (10, 20) (16,17,18a, 18b, 25,26,27). 2. A method according to claim 1, characterized in the execution of the tap welding fastening (30) of the fastening element (31) between the coating (10 ', 20') of the disc elements (10,20) and the supporting support (31), a soft spacer element (50) is used, whereby some damage to the coating (10 ', 20') is prevented. Method according to claim 1 or 2, characterized in that the method uses as stiffeners tubular elements (16), U-shaped elements (17,18a, 18b, 26) and / or Z-shaped elements (25,27) which through its heel, either immediately (Figs. 1,2,3,4,6), or insulated by an insulating board (28) «is secured to stiffen the layered structure. 10 62708 4. A method according to claim 1,2 or 3, characterized in that such insulation between the disc elements (10, 20) uses a matte wool layer (15) (Figs. 1,2 and 3) which does not function as any actual structural part in the the layered structure. 5 Method according to Claim 1,2 or 3, characterized in that one or more insulating material sheets (19; 28) which are affixed in place to said stiffeners (26, between the disc elements (10, 20)) are used in particular in sound insulating structures. 27). 10 Method according to any one of claims 1-5, characterized in that the disc elements (10, 20) are fixed at their edges, at least at their vertical edges, with each other by means of mutually adjacent bends (12, 13, 22, 23). ) of the disc elements (10, 20) and that the inner bend (23) of the disc element (20) located at the outer edge of the disc element (20) has projecting portions (24) behind which the outer bend (13) of the other element (10) becomes fixed. , thereby affixing the disc elements (10, 20) to each other at their edges. 20 Method according to any one of claims 1-6, characterized in that the stiffeners (18a, 18b) are immediately attached to the inner surfaces of the disc elements (10, 20) and the insulating material plate (19) of the layered structure becomes fixed in the space. between the stiffeners (18a, 18b) (Fig. 4). 25 Method according to any one of claims 1-6, characterized in that insulating material sheets (28) are attached to the inner surface of each disc element (10, 20) using elongated fastening pins (31) at the outer end of which the stiffeners (26) are attached. both attach the insulating material discs (28) to the disc elements (10, 20) and support the insulating material discs (28) which lie against each other and determine the gap (35) between them (Fig. 5). Method according to any one of claims 1-6, characterized in that the stiffeners (27), preferably Z- or U-shaped stiffeners, are fastened immediately to the inner surface of the disc elements (10, 20).