阅读说明：本技术 用于实现门窗框架加强筋的方法 (Method for realizing reinforcing rib of door and window frame ) 是由 安德烈·瓦卡瑞 丹尼斯·德·格兰迪斯 于 2019-03-20 设计创作，主要内容包括：用于实现门窗框架加强筋的方法,包括：-提供由具有可钻面(2)的金属材料制成的加强筋(1)的步骤；以及-在可钻面(2)上钻孔以在加强筋(1)中获得具有2mm-5mm之间特征尺寸(A)的固定孔(5)的步骤,其中所述加强筋(1)可插入由塑料材料制成的型材元件(4)中,并且所述固定孔(5)构造成被所述型材元件(4)软化的塑料材料穿透以限定铆接部分(6),用以将型材元件(4)固定到加强筋(1)上。(Method for realising a reinforcement for window and door frames comprising: -a step of providing a reinforcing bar (1) made of a metallic material having a drillable face (2); and-a step of drilling a hole in the drillable face (2) to obtain a fixing hole (5) in the reinforcing bar (1) having a characteristic dimension (a) of between 2mm and 5mm, wherein the reinforcing bar (1) is insertable in a profiled element (4) made of plastic material, and the fixing hole (5) is configured to be penetrated by the plastic material softened by the profiled element (4) to define a riveted portion (6) for fixing the profiled element (4) to the reinforcing bar (1).)

1. Method for realising a reinforcement for window and door frames comprising at least one step of providing at least one reinforcement (1) made of metal material, said reinforcement (1) having at least one drillable face (2), characterized in that it comprises at least one step of drilling the drillable face (2), to obtain at least one fixing hole (5) in said reinforcing bar (1), said fixing hole (5) having at least one characteristic dimension (A) comprised between 2mm and 5mm, the reinforcing rib (1) can be inserted into a profile element (4) made of plastic, and the fixing hole (5) is configured to be penetrable by the plastic material softened by the profile element (4) to define a riveted portion (6), the riveted connection (6) is used to fix the profile element (4) to the reinforcement (1).

2. The method according to claim 1, wherein the characteristic dimension (a) is between 3mm and 4 mm.

3. The method according to one or more of the preceding claims, characterized in that said characteristic dimension (A) is equal to 3.5 mm.

4. The method according to one or more of the preceding claims, characterized in that said step of providing a reinforcement bar (1) comprises at least a step of providing at least one metal plate and at least a step of bending said metal plate to obtain said reinforcement bar (1).

5. The method according to one or more of the preceding claims, characterized in that said drillable face (2) is configured to define at least one substantially protruding embossing element (7), said fixing hole (5) being obtained substantially at said embossing element (7).

6. The method according to one or more of the preceding claims, characterized in that said step of drilling is carried out to obtain a plurality of said fixing holes (5) in said reinforcing bar (1).

7. The method according to claim 6, characterized in that the fixing holes (5) are configured substantially circular to define at least one fixing assembly (8), the diameter (B) of the fixing assembly (8) being between 5mm and 25 mm.

8. The method according to claim 7, characterized in that said diameter (B) is comprised between 10mm and 16 mm.

9. Method according to claim 8, characterized in that said diameter (B) is equal to 13 mm.

10. The method according to one or more of the preceding claims, characterized by comprising a plurality of steps of drilling said drillable face (2) so as to obtain a plurality of said fixing assemblies (8).

11. Method according to claim 10, characterized in that the fixing assemblies (8) are substantially equidistant from each other, the distance (C) from the centre of at least one fixing assembly (8) to the centre of at least one adjacent fixing assembly (8) being substantially greater than 50 mm.

12. Method according to claim 11, characterized in that said distance (C) is comprised between 80mm and 120 mm.

13. Method according to claim 12, characterized in that said distance (C) is equal to 100 mm.

14. Method according to one or more of the preceding claims, characterized by the fact of comprising at least one secondary drilling step suitable for making at least one inspection hole (9) in said bar (1).

15. A method according to claim 14, characterized in that the inspection hole (9) is made in the drillable face (2) in an intermediate position between the two adjacent fixture assemblies (8).

16. The method according to claim 14 or 15, characterized in that the step of secondary drilling is performed to obtain a plurality of said inspection holes (9) on the drillable face (2).

Technical Field

The invention relates to a method for realizing a door and window frame reinforcing rib.

Background

It is known that, in order to reduce energy consumption, windows and door frames in particular need to ensure a certain degree of thermal insulation between the indoor environment and the external environment.

Although window and door frames made of plastic already have a high degree of thermal insulation compared to the metal window and door frames on the market, this need is particularly evident in the field of doors and window frames made of plastic material, in particular PVC.

These profile elements are made of plastic resin and have a special multi-cell structure inside the profile element itself, ensuring a high degree of thermal insulation.

The main drawback of the plastic profile elements made in this way is that they are not very resistant to stresses and movements due to externally applied forces.

Taking into account this drawback, such as prolonged exposure to the sun, involves heating the plastic profile by radiative heat transfer, thus increasing the risk of deformation of the profile itself.

In order to overcome this drawback, the known art introduces the reinforcing element into a housing seat defined in the profiled element and which extends along the entire extension of the profiled element itself, so as to give the profiled element itself greater stability and reinforcement of the structure.

Usually, these reinforcing elements are of the metal bar type, which are difficult to deform under the stresses applied, and are inserted into the housing seats and screwed onto the structure of the profiled elements by means of a machine provided with a compressed air screwing system.

The use of a set screw means that heat transfer takes place between the outside and the inside of the profile element structure by means of the set screw itself.

The plastic door and window frames thus produced have a major drawback in that they have poor insulation between the indoor environment and the outside environment, the door and window frames themselves are separate, and there is an associated energy supply cost to maintain the required temperature of the indoor environment.

These drawbacks are at least partially remedied by the process for realising door and window frames in plastic material, shown in italian patent application No. 102016000022110.

The process comprises the steps of inserting reinforcing bars inside the PVC profile elements and of fixing the reinforcing bars to the profile elements.

The reinforcing bars are fixed to the PVC profile elements by heating and softening a portion of the reinforcing bars themselves and then pressing the softened portion against the reinforcing bars to fix both.

Disclosure of Invention

This method for realising door and window frames of plastic material can be improved.

For example, it is possible to envisage a method for realising a reinforcement bar which allows to obtain a perfect reinforcement bar for connection to a corresponding PVC profile for the manufacture of door and window frames.

Furthermore, a method can be envisaged which can significantly improve the thermal insulation provided by the window and door frame, thereby limiting the energy consumption required to maintain the desired temperature.

Another possible improvement relates to the realisation of a reinforcement to reduce the time and costs in realising the window and door frame.

A further improvement relates to the realisation of a method for realising a reinforcement for window and door frames which allows to overcome the above mentioned drawbacks of the prior art within the ambit of a simple, rational, easy, effective to use and low cost solution.

Drawings

Further characteristics and advantages of the invention will become more apparent from the description of a preferred but not exclusive embodiment for realising a reinforcement for window and door frames, illustrated in an indicative and non-limiting way. For example, in the attached drawing sheets, wherein:

figure 1 is an isometric view of a reinforcing bar obtained according to the method of the invention;

FIG. 2 is a top view of a detail of FIG. 1;

figure 3 is an isometric view of a reinforcing bar inserted into a corresponding profiled element, obtained according to the method of the invention;

figure 4 is a cross-sectional view of a profiled element comprising a reinforcement for door and window frames according to figure 1.

Detailed Description

The method for realising a reinforcement for window and door frames comprises at least one step of providing at least one reinforcement 1 made of metal material having at least one drillable face 2.

The reinforcement 1 is intended for the manufacture of door and window frames and is in particular introduced into special housing seats 3 defined in the profiled elements 4, in order to provide greater stability and reinforcement to the structure of the profiled elements themselves.

Preferably, the metal material constituting the reinforcing bar 1 is steel, although the possibility of using different types of metal material cannot be excluded.

Usefully, the step of providing the reinforcing bar 1 comprises at least one step of providing at least one flat plate made of metal material, and at least one step of bending the flat plate itself to obtain the reinforcing bar 1.

In the embodiment shown, the reinforcing bars 1 have a tubular shape with a substantially U-shaped profile, although the possibility of providing reinforcing bars 1 with different shapes cannot be excluded.

The method according to the invention comprises at least one step of drilling the drillable surface 2 to obtain at least one fixing hole 5 in the reinforcing bar 1, which fixing hole 5 has at least one characteristic dimension a of between 2mm and 5 mm.

The possibility of providing the reinforcing bar 1 with a plurality of drillable surfaces 2, in which drillable surfaces 2 fixing holes 5 are formed, cannot be excluded.

The reinforcing bar 1 obtained by the method of the invention can be inserted into a profiled element 4 made of plastic, and the fixing holes 5 are configured to be penetrated by the plastic material softened by the profiled element 4 to define riveted portions 6 for fixing the profiled element 4 to the reinforcing bar 1.

In particular, when the plastic material (typically PVC, i.e. the PVC from which the profile element 4 is made) is heated, it starts to soften and enters the plastic state.

As a result, when the plastic material is pressed against the fixing hole 5, it penetrates the hole itself and expands.

The fixing hole 5 is dimensioned so that when the plastic material cools it cannot exit from the hole itself, thereby forming a riveted joint 6, which riveted joint 6 prevents an accidental separation of the profile element 4 from the reinforcing bar 1.

Furthermore, in this way it is possible to assemble the profiled elements and the reinforcing bars without providing metal connecting means, such as screws and bolts, ensuring the thermal insulation of the obtained frame.

Advantageously, the characteristic dimension A is between 3mm and 4 mm.

Preferably, the characteristic dimension a is equal to 3.5mm in order to optimize the fixing of the profiled elements 4 to the reinforcing bars 1, although the possibility of setting the characteristic dimension a of the fixing holes 5 equal to different values, but always within the above-mentioned range, cannot be excluded.

In the preferred embodiment illustrated, the fixing hole 5 has a substantially circular shape, so that the characteristic dimension a corresponds to the diameter of the hole itself, although it cannot be excluded that the fixing hole 5 can be made in different shapes, for example in the shape of a polyhedron.

The step of drilling may be performed by a variety of methods, such as punching, drilling, or the like.

Usefully, the drillable face 2 is configured to define at least one substantially protruding embossing element 7, wherein the fixing hole 5 is obtained substantially at the embossing element 7.

In particular, the embossing element 7 is constituted by a bulge similar to a thickening, which projects outwards with respect to the rest of the drillable face 2, which allows to reduce the clearance between the reinforcing bar 1 and the PVC profile element 4.

This measure allows to promote the penetration of the softened plastic material inside the fixing hole 5, reducing the force applied to the PVC to achieve this penetration and therefore the bonding between the profile element 4 and the reinforcing bar 1.

Advantageously, the step of drilling is performed to obtain a plurality of fixing holes 5 in the drillable face 2.

In the particular embodiment shown in the figures, the fixing holes 5 are formed substantially at the embossing elements 7, although the possibility of providing other dispensing cannot be excluded.

These fixing holes 5 are configured to be penetrated by the softened plastic material of the profile element 4 to define a plurality of riveted portions 6 for fixing the profile element 4 to the reinforcing bar 1.

As shown, the fixation holes 5 are arranged in a generally circular configuration to define at least one fixation assembly 8 having a diameter B between 5mm-25 mm.

The particular measures taken to realise the fixing assembly 8 allow to increase the stability of the connection between the profiled element 4 and the reinforcement 1.

In particular, the diameter B is between 10mm and 16 mm.

In the preferred embodiment shown, the diameter B is equal to 13mm, although the possibility of providing different diameters B cannot be excluded, as long as it is within the range of values provided above.

In the preferred embodiment still illustrated, the fixing assembly 8 also comprises a central fixing hole 5, which allows to improve the distribution of stresses in the coupling between the profiled element 4 and the reinforcing bar 1.

Usefully, the process includes a plurality of steps of drilling the drillable surface 2 to obtain a plurality of securing assemblies 8 to optimise bonding and distribute stresses throughout the drillable surface 2.

The fixation assemblies 8 are substantially equidistant from each other and the distance C from the center of at least one fixation assembly 8 to the center of at least one adjacent fixation assembly 8 is substantially greater than 50 mm.

Preferably, the distance C is between 80mm and 120mm, in particular the distance C is equal to 100mm, although the possibility of providing different values cannot be excluded as long as it is within the above-mentioned range.

Advantageously, the method further comprises at least one secondary drilling step adapted to make at least one inspection hole 9 in the bar 1.

The presence of such detection holes 9 is particularly useful for fixing the profiled elements 4 to the reinforcing bars 1, which is done automatically by special machines, and therefore it is advantageous for detecting the position of the fixing holes 5, these fixing holes 5 being invisible because they are covered by the plastic material.

In particular, the machine for fixing the profiled elements 4 to the reinforcing bar 1 can be provided with detection means useful for detecting the detection holes 9, for example magnetic means for detecting the holes 9, which can detect the absence of spots of metallic material, thus obtaining the position of the fixing holes 5.

In particular, it can be seen from the illustration that the inspection hole 9 is in the drillable face 2 in an intermediate position between two adjacent fixed assemblies 8.

The step of secondary drilling is performed to obtain a plurality of inspection holes 9 in the drillable surface 2.

In the particular embodiment shown in the figures, the detection hole 9 is obtained at the midpoint of the distance C between two consecutive fixation assemblies 8, although the possibility of providing different types of arrangements cannot be excluded.

Preferably, in the illustrated embodiment, the detection hole 9 has a detection diameter D comprised between 5mm and 30mm, in particular a detection diameter D equal to 15 mm.

Thanks to the above-mentioned method for realising a reinforcement for window and door frames, it is possible to realise a method for section elements for window and door frames comprising all the above-mentioned steps and the following subsequent steps:

-providing at least one profiled element 4 made of plastic for realising a door or window frame;

inserting the reinforcing bars 1 in the housing seats 3; and

fixing the profiled elements 4 to the reinforcing bars 1 by suitable fixing means.

Usefully, the profile element 4 is suitable for making frames and hinge elements, such as windows or doors.

The profile element 4 is made of PVC, but plastics of the heat-sealable type other than PVC cannot be excluded.

In order to allow a plurality of profiled elements 4 to be joined together by sealing, each profiled element 4 comprises a pair of head surfaces suitably cut at 45 ° to define a right-angled union, although the possibility of cutting the head surfaces at different angles cannot be excluded.

As previously described, this process comprises the step of inserting the reinforcing bars 1 into the housing seats 3 by means of suitable insertion means.

In practice, the profiled elements 4 are provided with housing seats 3 for the reinforcing bars 1, which housing seats 3 define a space to house the reinforcing element itself to be substantially measured.

In fact, in some cases there will be a certain clearance between the stiffener 1 and the safety housing seat, so the fact of providing the embossing elements 7 on the drillable face 2 of the stiffener 1 allows to eliminate the clearance and obtain a measured coupling.

The step of fixing comprises a preliminary step of providing at least one setting machine adapted to automatically fix the profiled elements 4 to the reinforcing bars 1.

Advantageously, the fixing step also comprises a heating step on a localized portion of the profiled element 4 by means of electromagnetic induction means, to obtain a heated and therefore softened portion.

In the preferred embodiment shown in the figures, the electromagnetic induction means are associated with the setting machine and comprise an electromagnet and alternating current power supply means adapted to power the electromagnet itself to generate a magnetic field with a frequency of hundreds of KHz.

The power supply of the electromagnet by means of an AC power supply generates an induced current, commonly known as foucault current, on the reinforcing bar 1 made of metal material, which is immersed in the magnetic field generated by the electromagnetic induction device.

These foucault currents are suitable for heating the reinforcing bar 1 at precise locations and, due to the joule effect, give off heat generated to the profiled elements 4, heating and softening them.

Depending on the power supplied to the electromagnet by the power supply device, the foucault current induced in the reinforcing bars 1 varies, and therefore the heat dissipated by the joule effect varies.

Advantageously, the electromagnetic induction means is adapted to induce a foucault current at a particular region of interest of the reinforcing bar.

The possibility of carrying out the heating step by means other than electromagnetic induction means, for example ultrasonic means, which can heat the plastic by vibration, cannot be excluded.

The heating step comprises a softening step of a portion of the profiled element 4, wherein the heated portion of the reinforcing bar 1 is in contact with the profiled element 4.

More specifically, the heating portion of the reinforcing bar 1 is adapted to conduct heat to the profiled element 4 so that it can soften at a specific location.

In the context of the present invention, the term "softening" refers to the particular thermodynamic state in which the plastic material (in this case PVC) reaches the softening point via thermal conduction.

Usefully, the step of shaping comprises a step of pressing a portion of the profiled element 4 softened at least partially inside the fixing hole 5, and this pressing step is carried out after the softening step.

However, in order to reduce the setting time, the possibility of substantially simultaneously performing the pressing step and the softening step cannot be excluded.

This pressing step is performed by means of a suitable pressing device 10, and the pressing device 10 is housed on the setting machine.

In particular, the pressure applicator means 10 are adapted to apply pressure in such a direction as to allow the softened plastic material to be inserted inside the fixing hole 5.

Preferably, the pressing means 10 are selected from hydraulic or electric punches and rollers which exert a pressing force on the outer surface of the softened profiled element 4 to define the shaped portions.

The pressure-exerting means 10 are movable at the fixing holes 5 in a pressure direction substantially perpendicular to the outer surface of the profiled elements 4.

As mentioned above, the stiffener 1 usefully comprises an embossing element 7, which embossing element 7 allows to reduce the clearance between the stiffener itself and the forming element 4.

As a result, this measure allows reducing the force that the pressure applicator 10 must exert on the profiled element 4 in order to cause the softened plastic material to penetrate into the fixing hole 5 to define the riveted joint 6.

In particular, the force exerted is ten times less in the case of stiffeners 1 provided with embossing elements 7 than in the case of stiffeners without embossing elements 7, thus reducing the costs associated with the realization of window or door frames.

Furthermore, the setting machine comprises detection means suitable for detecting the presence of the detection holes 9, to calculate the point at which the pressure means 10 must apply pressure.

The detection means are of the type of magnetic detection means, although the possibility of using different means, such as X-ray detection means, cannot be excluded.

The method further comprises the step of sealing the plurality of profiled elements 4 to realize a window or door frame.

This step of sealing is carried out after the step of fixing each profiled element 4 to the respective reinforcing bar 1.

In practice it has been found that the described invention achieves the intended aim.

In this respect, it should be noted that the particular measures provided for implementing the method for the reinforcement of door and window frames allow to improve the known processes for implementing profiles for door and window frames.

In addition, the particular provision of at least one drilled reinforcing bar makes it possible to obtain an upgraded reinforcing bar for connection to a corresponding PVC profile element for the manufacture of door and window frames.

Furthermore, the provision of special measures to realise a plurality of fixing holes to define a fixing assembly allows to significantly improve the thermal insulation provided by the window and door frame, thereby limiting the energy consumption required to maintain the desired temperature.

The special provision of multiple fixing hole steps to make multiple fixing assemblies makes it possible to ensure a secure fixing on the whole window or door frame, as well as to reduce the time and costs associated with the realisation of the window and door frame.