WO2020015864A1

WO2020015864A1 - Method for placing spacers on glass panes

Info

Publication number: WO2020015864A1
Application number: PCT/EP2019/050242
Authority: WO
Inventors: Leopold Mader
Original assignee: Lisec Austria Gmbh
Priority date: 2018-07-19
Filing date: 2019-01-07
Publication date: 2020-01-23

Abstract

When spacers (3) and spacer frames are placed on a glass pane (6) during the manufacture of insulating glass, the spacer (3) is guided by guide elements (11) and is placed on the glass pane (6) by pressing elements (12), the spacer (3) including an acute angle (α) with the plane of the glass pane (6) in a region in which it is brought close to the glass pane (6).

Description

METHOD FOR FITTING SPACERS ON GLASS DISCS

The invention relates to a method for preparing

Spacers, for example spacer frames

Glass panels in the course of the production of insulating glass.

In the case of insulating glass, the glass panes pass through each other

Spacers, such as spacer frames, are kept at a distance and connected to one another. This applies to double-pane insulating glass as well as triple or multiple-pane insulating glass.

When the spacer frame is attached manually, two sides of the spacer frame to be attached are removed by hand

aligned and attached to the glass pane, so that the spacer frame is attached to the glass pane inaccurately and, apart from a poor appearance, there are regions of the edge joint of different depths.

It is also problematic when attaching spacer frames that they are aligned essentially perpendicularly in the generally customary systems for producing insulating glass

Glass panes must be attached so that the upper,

horizontal section of the essentially perpendicular

aligned, ie essentially parallel to the glass, spacer frame sags more or less.

The problems mentioned arise to an increased extent because spacers as well as spacer frames, for example those made of hollow metal profile strips, with the aim of

To reduce heat transfer, i.e. to improve their insulating properties, are increasingly thin-walled.

In addition, insulating glass panes are getting bigger, so that the problems described arise to an increasing extent. Another problem is that it is

Multiple insulating glass is not easily possible to place spacers and spacer frames between the at least three glass panes congruently.

Various devices for

Applying spacer frames known.

DE 32 23 848 C3 describes a device for attaching

Spacer frame known. In the known device, spacer frames are inserted into a frame-like holder and are advanced from the holder to contact pins which prevent the spacer frame from reaching the glass pane in an uncontrolled manner. Then the spacer frame is provided by the frame-like bracket

Clamping devices detected, the system pins

withdrawn and moved the frame-like holder towards the glass pane, so that the spacer frame in its plane, which is parallel to the glass pane, is still attached to the glass pane. In DE 32 23 848 C3, the clamping devices can be actuated independently of the system pins. So one should

correct alignment of the spacer frame is achieved and bending and deformation of the spacer frame are avoided.

From US 3,733,237 A a device with rollers for attaching bezels for insulating glass is known. The borders have a strip which corresponds approximately to a spacer for insulating glass and which is inserted between the glass panes of the insulating glass. The device known from US Pat. No. 3,733,237 A has rollers which press the edge of the border onto the glass pane. In addition, a roller provided with an annular rib is provided, which deforms the rim so that a groove is formed. Moreover, are

Guide roles provided. The actual establishment of

Spacer frame is not mentioned in US 3,733,237 A. From DE 25 01 096 Al a device is known which in

Essentially corresponds to the device known from US 3,733,237 A.

EP 0 362 034 A1 discloses the attachment of sticky ones

Spacers on a glass pane in the course of producing insulating glass. The known device comprises a carriage which is moved on rollers along a glass pane. There is a pressure roller on the carriage and one on the side of the spacer

adjacent guide roller stored. With these rollers, a strip forming a spacer, which is initially oriented obliquely to the plane of the glass pane, is applied to the glass pane.

From KR 101778537 Bl is a plant for the production of

Insulating glass is known in which a device for attaching spacer frames to glass panes is provided. The device for attaching spacer frames comprises a robot on which gripper devices with two clamps for

Detect the vertical sections (frame legs) of a

Spacer frames are provided. The one of the

Spacer frames detected by gripper devices are attached to a glass pane by remaining moving in a plane that is parallel to the glass pane.

From WO 2011/156722 Al a device for attaching spacer frames is known, which at a corner

Spacer frame has holding elements that can be fitted from the inside. The spacer frame captured by the device is placed on a glass pane.

WO 2017/115063 A1 discloses a device for producing insulating glass comprising three glass panes, grippers being provided for spacer frames and for a glass pane and the spacer frame being attached to a glass pane can.

From DE 30 02 904 A is often a "swiggle strip"

known spacer tape based on butyl rubber known - provided with protective films - from a

Storage drum comes and is applied to a glass pane by means of a device equipped with a reversible head. This spacer tape is tough-plastic and strongly adhesive

(what a gastight connection with the glass panes of

Insulating glass is desired), but has a strong

temperature-dependent viscosity.

More recently, less temperature sensitive,

Elastoplastic spacer tapes based on polyurethane or the like have been developed, the shape and

are more dimensionally stable than the so-called "swiggle strip". These spacer tapes have a diffusion barrier on the outside, e.g. a lamination of aluminum foil, and on the intended for gluing to the glass panes

Narrow sides of the manufacturer, a thin, covered with protective films until the spacer tape is applied,

Coating made from a highly adhesive adhesive.

DE 102 12 359 A describes a method and a device for applying a spacer tape to glass panes from

Insulating glass, which consists of at least two glass panes,

known .

DE 103 50 312 A describes a device for producing

Insulating glass is known which has a device for applying an elastoplastic spacer tape. This

Device for applying a spacer tape when

Manufacture of insulating glass comprises a supply reel for the band, a plurality of driven band guide rollers and a pressure head for the band which is movable relative to a glass pane

Spacer strip. In contrast to the other procedure, a elastoplastic spacer tape used, the

Side surfaces are not yet coated with an adhesive.

Rather, this is only shortly before the application of the

Spacer tape applied to the side surfaces. For this purpose, opposing nozzles are provided between the supply reel and the pressure head and coat the side surfaces of the spacer tape with the adhesive.

EP 2 408 991 B1 describes an application device

Flexible, for example elastoplastic, spacer tapes on glass panes known in the course of the production of insulating glass. This device comprises a supply reel for the

Spacer tape, a device for supporting the

Glass pane to which the spacer tape is to be applied and an application head. At least one further supply reel for a further spacer band, which is different from the first spacer band, is assigned to the application head. At the

The application head is a device for aligning the desired spacer tape with respect to one

Feed device for spacer tape provided. In the area of the device, a clamping device is provided for holding unselected spacer tape.

The invention has for its object the preparation of

To improve spacers on glass panes so that on the one hand an exact alignment of the spacer on the glass pane is achieved and on the other hand deformations of the spacer, for example of the spacer frame, are avoided.

This object is achieved according to the invention with a method which has the features of claim 1.

Preferred and advantageous embodiments of the

The inventive method are the subject of the dependent claims.

The method according to the invention is for various Spacers suitable. So with the invention

Move straight spacers, rod or rod shaped

Spacers, spacers removed from a roll,

frame-shaped spacers for polygonal (e.g. triangular, square), rectangular or square insulating glass, frame-shaped spacers for "shaped panes" (insulating glass that has, for example, at least one non-straight edge), spacers made of plastic or metal (straight, rod-shaped or frame-shaped), etc. successfully attached to glass panes.

The procedure according to the invention allows the

Spacers in the area where he is the glass pane

fed and applied to this to lead exactly. This not only ensures precise alignment of the spacer

reached compared to the glass pane, but also ensures that spacers, for example spacer frames, are not deformed, but the desired shape, which the

Outline shape of the glass pane and thus that of the insulating glass

corresponds.

In a preferred embodiment, the

The method according to the invention uses frame-shaped spacers which, for example, consist of (metal) hollow profile strips, from pieces of hollow profile strips to form a spacer frame

are composed or consist of a (metal) hollow profile strip bent into a spacer frame.

The method according to the invention is for example for

rigid spacers, i.e. those with an increased

Transverse bending stiffness, just as suitable as for rigid

Spacer made from a plastic strand.

In one embodiment of the method according to the invention, provision is made for the spacer to be applied with the aid of elements acting on the spacer. The "elements", "guide elements" and "pressing elements" used in the context of the invention for "applying" a spacer or a spacer frame can

cylindrical or frustoconical rollers or rigid

Bodies attached to the spacer or spacer frame

move along, such as being pushed or pulled or sliding along it, as well as pressing elements with endless belts or caterpillars, etc.

In one embodiment of the invention it can be provided that an apparatus is used which comprises a plurality of elements which are moved along the spacer when the spacer is applied.

In particular, it has proven useful if according to one

Embodiment of the invention is proceeded, in which an apparatus with elements is used, the at least one

Guide element (e.g. two guide rollers) and at least one pressure element (e.g. two pressure rollers).

In one embodiment of the method according to the invention

the appearance and accuracy of attaching spacers, e.g. spacer frames, to a glass sheet can be improved since an apparatus with elements, e.g. a roller apparatus is used, which applies the spacer, for example the spacer frame, to the glass pane, in particular rolls it up.

The feeding of the spacer, for example the

Spacer frame, to the glass pane is under one

acute angle to the glass pane, for example simultaneously with a movement of the glass pane in particular in the conveying direction.

It is preferred within the scope of the invention if, for clock, time and space reasons, a second apparatus with elements for fitting a spacer frame (roller apparatus) is provided which engages on the upper section of a spacer frame and which, for example, acts synchronously with one on the lower section of the spacer frame

Apparatus with elements is moved.

The positioning of the (approximately) vertical sections of a

Spacer frames are preferably also made using devices with elements (roller devices). It is in the

Within the scope of the invention it is possible to use apparatus which can be pivoted about an axis perpendicular to the plane of the glass pane, so that it can be used for both horizontal and vertical sections

Spacer frame can be used.

The method according to the invention is suitable in a

exemplary embodiment also for the preparation of

Spacer frame on mold washers. With this

The embodiment with elements, e.g. the roller apparatus, during the pressing, not only moved continuously along the circumference of the glass pane, but also pivoted about an axis oriented perpendicular to the glass pane in order to constantly align the apparatus, for example the roller apparatus, in accordance with the contour of the glass pane.

In one embodiment of the method according to the invention, the size and / or the position of the spacer, for example a spacer frame, is recorded. The size and / or the position of the glass pane to which the spacer is to be attached is also recorded. Based on the recorded data of the spacer and the glass pane, the

Spacers are aligned and guided when attaching to the glass pane so that it is attached to the glass pane in the desired position, that is to say in the correct orientation with respect to the glass pane, on the glass pane. Depending on the embodiment, the method according to the invention results in one or more of the advantages mentioned below compared to the known prior art: continuous and more precise alignment of

Spacer frames,

shorter overall length of the system,

less expensive embodiment of the system for attaching spacer frames, since the required accuracy is only on the vertical axis and with respect to the horizontal

Advance movement of the glass pane is required

it is possible to use unstable and flexible spacer frames,

The spacer frame can be attached and glued to the glass pane continuously, it is possible to average the frame opening (depth of the edge joint), i.e. Measuring the actual dimensions of the

Spacer frame and adjustment to the actual dimensions of the glass pane,

a more precise definition of the depth of the edge joint saves sealing material,

congruent placement of spacer frames

Multiple insulating glass.

Further details and features of the invention

Method and an apparatus with which the method can be carried out result from the following

Description of exemplary embodiments with reference to the schematic drawings. It shows:

Fig. 1 in view looking in parallel to a portion of a spacer frame, a roller apparatus with two rollers, which when used as a guide and

Pressure rollers for a spacer frame act,

Fig. 2 in view looking towards a section

a spacer frame the roller apparatus of Fig. 1, Fig. 3 in view looking in the direction parallel to a section of a spacer frame, a roller apparatus with two guide rollers and two associated with them

pressure rollers,

4 in a view looking in the direction transverse to a section of a spacer frame, an embodiment with guide rollers,

Fig. 5

up to 8 different possibilities when starting one

Spacer frame on a glass pane,

Fig. 9 not using the example of a triple insulating glass pane

spacer frames and

10 is a view of a triple insulating glass pane with spacer frames which are not congruently attached.

In the present case, the term “section” denotes a straight or curved region or part of a spacer or a spacer frame, which at

Spacer frame is, for example, a frame leg between two corners of the spacer frame.

Although in the description of the drawings

"Spacer frame" is turned off, the inventive method and the device described are equally advantageously suitable for attaching any spacers (including non-frame-shaped spacers).

In the embodiment shown in FIGS. 1 and 2, a pair of rollers 1, 2, which act as guide and pressure rollers,

intended. The rollers 1, 2 lie on the wide surfaces 4 of a spacer frame 3, which is covered on both sides with a butyl cord 5, and guide the spacer frame 3 (more precisely: its section to be attached to the glass pane) around the

Place spacer frame 3 on a glass pane 6. In the embodiment shown in FIG. 1, the axes 7 of the rollers 1, 2 are at an acute angle to the plane of the glass pane 6 inclined (Fig. 2). The axes 7, about which the rollers 1, 2 rotate, are inclined to the plane of the glass pane 6 about the axis 8 shown in FIG. 1, which goes through the axes of the rollers 1, 2.

In the embodiment shown in Fig. 3 is a

Roller apparatus 10 is provided, the guide rollers 11, which on the wide surfaces 4 (inner and outer surface) of the

the section of the spacer frame 3 to be attached and the spacer frame 3 in the area of the to be attached

Guide section so that it is placed in the right place on the glass pane 6. The creation of the

Spacer frame 3 on the glass pane 6 is carried out with the aid of pressure rollers 12, which are aligned such that they are located on the edges 13 of the glass plate 6 which are distant

Attack spacer 3 without the one attached there

Touch butyl cord 5. The one shown in Fig. 3

Embodiment of the roller apparatus 10, a pair of rollers with guide rollers 11 is provided, which the leadership of

Spacer 3 takes over in a direction parallel to the plane of the glass pane 6, and another pair of rollers

Pressure rollers 12, which presses the spacer 3 against the glass pane 6.

In the embodiment shown in FIG. 3, the

Pressure rollers 12 because of their inclination only on near edges, not occupied with a butyl cord 5, areas of

Spacer frame 3 on. By tilting the

Pressure rollers 12, the spacer frame 3 is guided and encloses an acute angle with the glass pane 6 when it is attached.

It can be seen that when the method according to the invention is carried out, the section of the spacer frame 3 to be attached is brought under elastic deformation (radius, for example 5 meters) and is brought closer to the glass pane 6, so that it in the area of contact with the glass pane 6 encloses an acute angle with the latter.

The method according to the invention also has the advantage that it

Avoids problems in the corner area of spacer frame 3, which can result from the fact that the butyl cord 5 in the

Corner area is often tapered. With the help of the invention

In the process, the butyl cord 5 is not pressed against the glass pane 6 in the area of the corners, but is only put on, ie in

Brought into contact, so that spacer frames 3, which have not been bent precisely to size, have the opportunity to

Align yourself, for example with

Help one used in the method according to the invention

Roller apparatus 10 can be executed.

FIG. 4 shows in a view similar to FIG. 2 how a section of a spacer 3 is approximated to a glass pane 6, the section of the spacer 3 being bent.

Bending radii of up to 10 meters are possible. For example, the bending radius is 5 meters. 5 shows a roller 15 opposite the rollers 1, 2, which supports the glass pane 6.

It is shown in FIG. 5 that the acute angle of feeding the spacer 3 to a glass pane 6 can be achieved by the section of the part to be attached to the glass pane 6

Spacer 3 is bent in the elastic region while it is attached to a glass pane 6.

An alternative to this is shown in FIG. 6, where the section of the

Spacer 3 remains straight and the glass pane 6 is bent in order to reach the acute angle in the area in which the section of the spacer 3 is placed against the glass pane 6.

Fig. 7 shows an embodiment in which both the Spacers 3 and the glass pane 6 are bent, so that the tip provided according to the invention also extends here

Angle results.

The previous example using the example of

rectangular spacer frame 3 on glass panes 6

The described method of operation (method) according to the invention is also suitable for attaching spacer frames 3 of any shape.

8 shows an embodiment in which three-pane insulating glass is produced, using a spacer frame 20 in which the center glass 21 has already been inserted. In this embodiment of the invention

The outer glass panes 6 are bent so that the acute angle between the spacer frame 20 and the glass panes 6 is formed on both sides of the spacer frame 20.

9 and 10 are problems in the preparation of

Spacer frames on glass panes, which often occur when the attachment, as is known in the art, is shown schematically.

FIG. 9 shows the frequently occurring case that spacer frames 3 do not align with triple insulating glass, so that one of the spacer frames 3 is offset further inwards from the edge of the glass panes 6 than the other

Spacer frame 3.

Fig. 10 shows the common problem of sagging the upper portion of a spacer frame 3 when it is not in the correct position (without sagging) to one

Glass pane has been attached.

Although in the above description of the method according to the invention with the aid of the drawings, rolls 1, 2, 11, 12, the spacers or sections of spacer frames and move against a glass pane, which is mentioned, other elements are also considered within the scope of the invention. Such elements, apart from cylindrical or

frustoconical, preferred meadow free-running roles, on

Spacers can be slidably engaging bodies that do not rotate, or elements in the form of endless bands that run around deflection rollers. For the method according to the invention

concrete design of the guide and pressure elements is not essential, although the embodiments shown in the drawings and described above are preferred when carrying out the method according to the invention.

In summary, an embodiment of the invention can be described as follows:

When spacers 3 and spacer frames are attached to a glass pane 6 in the course of producing insulating glass, the spacer 3 is guided by guide elements 11 and by

Pressing elements 12 are attached to a glass pane 6, the spacer 3 enclosing an acute angle with the plane of the glass pane 6 in the area in which it is approximated to the glass pane 6.

Claims

Claims:

1. Method for attaching spacers (3) to one

Glass pane (6) in the course of producing insulating glass, in which the spacer (3) and the glass pane (6) are brought closer to one another and the spacer (3) is attached to the

Glass pane (6) is applied, characterized in that the spacer (3) is aligned at an acute angle () to the glass pane (6), that at least a first position of the spacer (3) is placed on the glass pane (6) and that the spacer (3) from the

starting point progressively to the

Glass pane (6) is applied until the spacer (3) is completely against the glass pane.

2. The method according to claim 1, characterized in that

frame-shaped spacers (3) can be attached.

3. The method according to claim 2, characterized in that

frame-shaped spacers (3) from pieces of

Metal profile strips or from one to one

Spacer frame curved metal profile strip can be used.

4. The method according to claim 1 or 2, characterized in that spacers (3) comprising a plastic strand are attached.

5. The method according to any one of claims 1 to 4, characterized

characterized in that the spacer (3) is coated with adhesive and sealing compound (5) at least on its side facing the glass pane (6) to which it is to be attached.

6. The method according to any one of claims 1 to 5, characterized characterized in that the spacer (3) is applied with the aid of at least one element (1, 2, 11, 12) engaging the spacer.

7. The method according to claim 6, characterized in that an apparatus (10) comprising a plurality of elements (11, 12), which are moved along the spacer (3) when the spacer (3) is applied, is used.

8. The method according to claim 6 or 7, characterized in that rollers (1, 2) are used as elements, whose axes (7) to the plane of the glass pane (6) to which the

Spacers (3) is attached, are inclined.

9. The method according to claim 7 or 8, characterized in that a roller apparatus (10) is used, the two

Guide rollers (11) and two pressure rollers (12).

10. The method according to claim 9, characterized in that the guide rollers (11) on the spacer (3) on its transverse to the glass pane (6) on which the spacer (3)

is to attack aligned sides.

11. The method according to claim 9 or 10, characterized in that the pressure rollers (12) act on the side of the spacer (3) facing away from the glass pane (6).

12. The method according to claim 11, characterized in that the pressure rollers (12) on edges (13) of the spacer (3) attack.

13. The method according to any one of claims 2 to 12, characterized

characterized in that in the case of frame-shaped spacers (3) two sections, for example two mutually parallel sections, of the spacer (3) are simultaneously applied to the glass pane (6).

14. The method according to any one of claims 1 to 13, characterized in that the glass pane (6) and the spacer (3) partially applied to it in one

Linear motion can be moved forward.

15. The method according to claim 14, characterized in that a frame-shaped spacer (3) with a section oriented transversely to the direction of travel to the

Glass pane (6) created and, from this section

starting, is progressively applied to the glass pane (6).

16. The method according to any one of claims 1 to 15, characterized

characterized in that the spacer (3) is applied to the glass pane 6 by bending the glass pane 6 in the elastic region.

17. The method according to claim 16, characterized in that the convex side of the bend of the glass pane (6) faces the spacer (3) to be attached.

18. The method according to any one of claims 1 to 15, characterized

characterized in that the spacer (3) by bending the spacer (3) in the elastic region to the

Glass pane (6) is created.

19. The method according to claim 18, characterized in that the convex side of the bend of the spacer (3) faces the glass pane (6) on which the spacer (3) is attached.

20. The method according to any one of claims 1 to 19, characterized

characterized in that the spacer (3) to the

Glass pane (6) is created by spacers (3) and Glass pane (6) can be brought closer to one another by moving the spacer (3) and / or the glass pane (6).

21. The method according to any one of claims 1 to 20, characterized

characterized in that rollers (1, 2, 11, 12), sliding elements, elements with endless belts or caterpillars are used as the elements which guide the spacer (3) and bear against the glass pane (6).

22. The method according to any one of claims 1 to 21, characterized

characterized that the size and / or location of the

Spacers (3) and the glass pane (6) to which the spacer (3) is to be attached are detected and that the spacer (3) on the basis of the recorded data relating to the size and / or the position in the desired position on the glass pane (6) is applied.