HRP920806A2 - Double glazed window with plastics frame - Google Patents

Abstract

The invention relates to a method for making window and door sash frames of plastic profiles, which consists of slanting the cut beams 22, 23 with beveled surfaces 28 at the ends, on a multiple glass plate 2. the other two beams 23 are partially clamped on the glass plate 2 by the clamps 31, after which heaters 32 are plasticized between the beveled surfaces 28, which heat the beveled surfaces 28. The beams 32 are moved away and the beams 23 are pressed against the beams 22, so that contact face welding of beams 22 and 23 occurs along the surfaces 28. After the frame 1 is assembled, a sealant 15 is injected into the grooves 14 on each side of the glass plate 2 to connect the frame 1 with the glass plate 2.

Description

The technical field to which the invention belongs

The invention belongs to the field of plastic mass processing, and especially relates to assembling by welding. Designation according to the International Classification of Patents: B29C 27/06.

Technical problem

The invention solves the problem of how to realize a process for the production of window and door frames from plastic profiles, in which the joints of the beams at the corners will be realized in one operation without additional reinforcing elements, and according to which the sealing adhesive will be applied subsequently, after frame design.

State of the art

One known procedure for making window or door sash frames is known from the German patent application DE OS 22 03 771, according to which, when making the sash frame, individual billets are pulled onto the edges of the glass panel. In doing so, the edge of the glass plate penetrates into the open groove of the billet profile and presses the strip of sealing glue, which was previously applied to the groove into which the glass plate enters. The sealing glue connects the billets to the glass panel. In this way, the sash frame is formed on the glass plate, and the glass plate and the frame form one inseparable structural unit, or module. The diagonally cut billets of the wing frame are joined together with some glue. This procedure has proven to be good in practice.

When making the sash frame according to this procedure, in the case when insulating window multiple glass is used, the individual glass panels of which are at a greater distance from each other, it turned out that the joining of the beams along the inclined surfaces using gluing is not stable enough. In order to prevent the separation of the inclined surfaces, especially in the area of the wing fold, it is necessary to install additional angles in the wing frame. Due to the wider profile of the groove to accept insulating window multi-glass, sealing adhesive must be applied directly into the groove of the profiled bead before sliding the battens onto the glass panel. In this case, the correct dosage of the sealing adhesive is difficult to achieve. If too much sealing glue is applied, a part of the glue will uncontrollably break out of the groove over the edges of the glass plate when the billet is pulled up, so it will have to be removed from the surface of the glass plate afterwards. If too little sealant is applied, subsequent sealing of the wing frame will be required.

Description of the solution to the technical problem

The aim of the invention is to create a process for making frames for windows and doors from profiles made of plastic materials, especially window and door sash frames, which will improve the strength of the connections between individual beams in a simple way, and by which sealing the glue can be placed in the groove for accepting the glass plate, so that no additional work will be required to remove and clean the glue.

According to the invention, this is achieved by welding the beams that form the frame to each other on the insulating multilayer glass. In doing so, the glass plate is centered in the groove of the profiled billet by means of spacer ribs, which extend from the inner sides of the free ends of the walls of the groove to accept the glass plate. After the welding is completed, the sealing glue is applied on both sides of the multiple glass panel in the groove that forms the surface of the glass panel, the profile wall and the spacer rib. By welding the billets along their inclined surfaces, a homogeneous connection of very high strength is achieved, which avoids the separation of the inclined surfaces in the area of the flap of the wing frame, so no additional reinforcement angles are needed. The insulating multilayer glass is centered using the spacer ribs on the walls of the billet profile. As these spacer ribs extend to the very surface of the glass panel, a groove will be formed on both sides of the insulating glass panel, within the profile of the billet, which extends in depth to this rib. Sealing glue is pressed into this groove after the welding process by means of an extrusion gun under pressure, which is a simple way and with ensured visual control.

According to one embodiment of the invention, it is suitable for the billets to be heated by means of heating elements that move vertically to the surface of the glass plate, after which the billets are brought close to each other and are butt-welded under pressure. After applying the sealing adhesive, the seams formed during welding are removed from the visible surface of the wing frame. With the help of heating elements, which move vertically to the surface of the glass panel, and have an extension that also touches the underside of the glass panel, the inclined surfaces of the billet are heated so that they become completely soft, plasticized. After that, the heating elements are removed and the billets are brought close to each other and pressed, so that the adjacent billets are welded face-to-face, while the corresponding seams are formed. After applying the sealing glue, these butt weld seams are removed using the appropriate tool.

According to one feature of the invention, all billets are welded to each other at the same time, which makes the procedure more rational.

In one practical implementation, after cutting it to a certain length, at least one chamfer or indentation is made in the area of the profile groove on each of the billets. In the case of face-to-face contact welding of two billets, a welding seam occurs, as mentioned, which in this case remains within this bevel or depression, so subsequent cleaning of the profile groove from the welding seam is not necessary.

With the frame made according to this procedure, it is convenient to make a soft sealing edge on the free ends of the walls of the profile groove, which rests on the surface of the glass. After applying sealing glue in the groove between the surface of the glass panel and the wall of the profile, this groove will be covered by the sealing edge that rests on the surface of the glass panel. As the soft sealing edge directly abuts the surface of the glass panel, a continuous transition is obtained between the surface of the glass panel and the billet, thereby improving the exterior appearance of the sash frame.

It is suitable that each of the walls of the profile grooves in the area between the sealing edge and the spacer rib is made with ribs that extend along the groove. This results in improved adhesion of the sealing glue to the walls of the profile groove.

According to one practical implementation, the spacer rib is made with a profile whose sides overlap a sharp angle, whereby this profile is perpendicular to the surface of the glass panel, which makes it easier to pull the billets over the edge of the glass panel.

Other advantages and details of the subject of the invention can be seen from the drawings, which schematically show, as an example, one embodiment of the invention, whereby:

- figure 1 shows a partial section of a wing frame according to the invention,

- Figure 2 shows a horizontal projection of a schematically presented device for contact butt welding of individual billets of one wing frame.

The wing frame essentially consists of a frame 1, made of a plastic mass profile, and an insulating, multiple glass plate 2. The glass plate 2 is made of two special glass plates 5, 6 separated by a spacer 4. Between the individual plates 5, 6 , on the narrow sides of the spacer 4, one strip of butyl 3 is placed, for internal sealing. For external sealing of the glass plate 2, a layer 3' of thiokyl is used, which achieves a high strength of the connection. The spacer 4 has a hollow chamber 7 for holding the drying agent 8, which draws moisture from the air enclosed between the glasses 5, 6 into the spacer 4 through the openings 9.

The sash frame 1 has a U-profiled groove for receiving the glass plate 2. Spacer ribs 12 are formed on the mutually parallel walls 11 of the groove 10, which extend from the free end of the wall 11 for a certain distance. The profile of the spacer ribs is made with sides that mutually close a sharp angle, whereby the spacer ribs 12 rest tightly with their tips on the glass plate 2. In the grooves 14 on both sides of the glass plate 2, which are formed by the walls 11, the surfaces 13 of the glass plate 2 and the spacer ribs 12, the sealing glue 15 is applied, which connects the wing frame 1 with the insulating glass plate 2 in an inseparable unit. At the free end of each of the walls 11, a soft sealing edge 16 is placed, which rests on the surface 13 of the glass plate and closes the groove 14. For better adhesion of the sealing glue 15 to the wall 11 of the groove 10, it is made with ribs 17 that extend along groove 14. On the wall 19 of the profile, on the opposite side of the wall 18 of the bottom of the groove 10 of the frame 1 of the wing, a profiled groove 10 with outlets 24 is made for the placement of fittings parts. In the extension of one of the walls 11 of the groove 10, the wing frame 1 has a flap 21.

To make the frame 1 of the wings, two billets 22 and 23 are cut at an angle from one plastic profile. On the side of the billets 22, 23 where the flap 21 is, which is visible from the outside, a decorative foil 25 is applied, which is shown in Figure 1 with a dash-dot line. On the device for performing welding, shown schematically in Figure 2, the glass plate 2 is laid flat on the supports 26 on the base plate 27 and fixed in that position. With the beveled ends cut to a specific length, the billets 22, 23 have additionally derived bevels 29 on the beveled surfaces 28 in the area of the profiled groove 20, as shown in detail "X" in an enlarged ratio. Furthermore, in the area of the decorative foil 25, on the beveled surfaces 28, depressions are made, the width of which corresponds to half the thickness of the material used in contact butt welding, so that no welding occurs in that area. Then the billets 22, 23 are placed in clamps 30, 31, placed in one common plane, so that the flaps 21 are placed next to the base plate 27. The oppositely placed clamps 30 pull both billets 22 over the edge of the glass plate 2 in one working stroke. four heated heaters 32, which partially absorb the glass plate 2, are inserted vertically on the surface 13 of the glass plate between the beveled surfaces 28 of the billets 22, 23 and rest on the beveled surfaces 28 of the billets 11. At the same time, the billets 23 are pulled with clamps 31, in the direction of the arrows, over of the edges of the glass plate 2, until their beveled surfaces 28 rest on the heaters 32. With the hot heaters 32, the ends of the billets 22, 23 are heated so much that they become completely soft and plastic.

Clamps 23 are pulled back and all four heaters 32 are pulled out at the same time. Clamps 31 move billets 23 again in the direction of the arrows and under pressure they rest on the beveled sides 28 of adjacent billets 22, 23 and weld them together in contact, creating a welded seam.

After the welding process, the frame 1 of the wing is removed from the clamps 30, 31. In the next working step, the sealing glue 15 is introduced into the grooves 14 using an extrusion gun under pressure, whereby each of the sealing edges 16 is briefly raised from the surface 13 of the glass plate. After tightening the sealing glue 15, the billets 22, 23 and the glass plate 2 form one unbreakable unit. Finally, using a special tool, the welding seam is removed from the visible surface of the frame of 1 wing. Thanks to the thickenings in the area of the decorative foil 25, as well as the bevels 29 in the area of the profiled groove 20, there is no need to remove the welding seam in these areas.

Claims (1)

1. Process for the production of frames of window sashes and doors of profiles from plastic materials, according to which billets 22, 23 for forming the frame 1, with beveled surfaces 28 with recesses and/or bevels 29 at the ends, and with a groove 10 for accepting the insulating glass plate 2 , and with a profiled groove 20 directed to the opposite side for accepting fittings, they are pulled onto the glass plate 2, characterized by the fact that the first pair of billets (22) is pulled onto the multiple glass plate (2) with clamps (30), whereby the centering of the billet (22) ) in relation to the glass plate (2) is realized by triangular profiled spacer ribs (12), made on the side walls (11) of the groove (10), which the second pair of billets (23) is partially brought to the billets (22) with clamps (31), after after which heaters (32) are inserted between the beveled surfaces (28) of the billets (22, 23), which plasticize the billets (22, 23) in the area of the beveled surfaces (28), after which the heaters (32) are removed, and the billets ( 23) are pulled onto the glass plate with clamps (31). in (2) and pressed against the billets (22), during which the contact butt welding of the billets (22, 23) along the beveled surfaces (28) occurs, and which, after the finished shaping of the frame (1), folds into the grooves (14), between the surfaces (13) of the glass plate (2), the walls (11) and the spacer rib (12), covered by the soft sealing edge (16), he injects sealing glue (15).