EP2691184A1

EP2691184A1 - Gluing nozzle with a plurality of outlet openings

Info

Publication number: EP2691184A1
Application number: EP12716280.8A
Authority: EP
Inventors: Christian Denk; Joachim Hauns
Original assignee: Aluplast GmbH
Current assignee: Aluplast GmbH
Priority date: 2011-03-28
Filing date: 2012-03-28
Publication date: 2014-02-05
Anticipated expiration: 2032-03-28
Also published as: SI2691184T1; PL2691184T3; DE102011001597A1; DE102011001597B4; EP2691184B1; CA2830651A1; WO2012130867A1; DK2691184T3

Abstract

The invention relates to a gluing nozzle (1) for introducing glue material into a gluing gap (13) and to a method for introducing glue material into a gluing gap (13). The gluing nozzle (1) has a first outlet channel (3A) and a first outlet opening (3) which is arranged on an end side (2) of the gluing nozzle (1). In addition, the gluing nozzle (1) has at least one second outlet channel (4A) with a second outlet opening (4), wherein the at least two outlet openings (3, 4) are arranged in a direction of movement (B) of the gluing nozzle (1) in such a manner that the glue material emerging from an outlet opening (3, 4) causes compression of the glue material emerging from at least one other outlet opening (3, 4).

Description

Description: The present invention relates to an adhesive nozzle having an outlet opening and to a method for introducing adhesive material into an adhesive gap.

A large number of adhesive nozzles are already known from the prior art, which are used for example for filling a bonding gap with adhesive material. Adhesive nozzles in window construction are used to connect glass panes to one another

Frame used. The type of application of the adhesive material in the adhesive gap is crucial for the maintenance of the disc in the frame and thus for the quality.

A common way of gluing glass panes is the so-called

Rebate base bonding. In this case, an adhesive nozzle is inserted between a glass sheet and a wing of the frame and filled the entire Falzgrund with adhesive. Since the fold base is limited in depth by the wing, it comes with sufficient supply of adhesive to a slight compression of the adhesive. As a result, more pressure between the disc and the wing is built, which leads to a tighter fit and a better bonding of the disc. In this case, however, more adhesive is used than for the mere gluing of the disc would actually be necessary because for gluing the disc to the wing first a dead space in Falzgrund, in which no contact of the adhesive takes place with the glass, must be filled with adhesive.

In addition, there is a risk that in the large amount of adhesive used this exits the Falzgrund, because, for example, too much glue in the

Adhesive gap is supplied. This is undesirable and requires in turn

Countermeasures, for example by providing an extruded lip on the sash profile in the region of the fold. In addition to a large glue consumption is in the known adhesive nozzle so even a complicated device or

Design of the wing necessary. Furthermore, this procedure is little variable, for example, if glass panes, each with different thickness to be used and thus the adhesive gap shape is different.

For this reason, glass edge bonding has been developed as an alternative method. An adhesive nozzle does not dive into the gap, but sits on the side of the glass pane remote from the rabbet base. Regardless of the thickness of the glass, the same amount of adhesive is always applied in this process. Unlike the Falzgrundverkleben not the entire space between the glass and the wing is filled with adhesive material. As a result, although adhesive is saved, but there is a risk that it does not come to a good connection between glass and wing, if the applied adhesive does not adhere to the glass. In particular, this danger exists if the adhesive is introduced without being sealed. As a result, it may come to a non-all-over contact of the adhesive with glass or wing, and also other properties, in addition to the bonding, such as a Isolationswirkung- or density function, can be met only insufficient.

To better compress the adhesive during discharge from the adhesive nozzle, the adhesive is therefore deflected before exiting the nozzle so that it is against the

Direction of movement of the nozzle emerges. This creates a certain dynamic pressure through the already applied adhesive, which causes a compression of the exiting adhesive. A disadvantage of this system, however, is that a large amount of adhesive is consumed in order to ensure sufficient attachment of the glass sheet to the wing

accomplish.

Nozzles, in particular application nozzles, with a plurality of outlet openings are known from the prior art. Thus, in the document DE 101 56 691 A1 a

Multiple glue nozzle with several, in particular two, openings described, which is used for applying glue on Papierkannten. In this case, the glue application, for example, by successively, one above the other or obliquely offset openings. In the document DE 41 00 694 A1 a device is disclosed which, when using a double nozzle, allows, in addition to a strand of butyll rubber serving as a spacer, a strand of an elastically hardening two-component plastic serving as a seal in one operation To apply glass pane.

From the document EP 1 891 865 A1 is a gluing device with two

Glueing devices known to glue two tracks, preferably one

Kaltleimspur and a hot glue track to apply to a wrapping material strip of a filter or tobacco rod. Furthermore, the document EP 1 563 914 A1 describes a material application device for producing a scannable marking on a surface which has at least one, in particular two, nozzle openings. It is therefore an object of the invention to provide an adhesive nozzle which avoids the aforementioned disadvantages.

The problem is solved with a glue nozzle according to claim 1 and a

Method according to claim 11. Advantageous embodiments are subject of the dependent claims.

According to the invention, the adhesive nozzle has a first outlet channel with a first outlet opening and at least one second outlet channel with a second outlet channel

Outlet opening on. In this case, at least one of the outlet openings has a smaller cross-section than at least one other outlet opening. By providing outlet openings with different cross sections, it can be achieved that the discharge width of the adhesive material into the adhesive gap is different. Thus, the adhesive material exiting via the at least one outlet opening with the smaller cross-section has a higher flow velocity than the adhesive material exiting via the other outlet opening. Due to the higher flow rate, a higher penetration depth of the adhesive material into the adhesive gap can be achieved. The provision of a further outlet channel in the adhesive nozzle enables improved compression of applied adhesive material in the adhesive part. Thus, according to the invention, it is ensured that the adhesive material which has leaked out via the outlet opening acts on an already exited via another outlet opening

Adhesive material meets. As a result of the meeting of the two escaped

Adhesive materials in the adhesive gap, this is compressed there. Due to the

compressed adhesive material can provide better and faster adhesion of the

Adhesive material can be achieved on a glass sheet or a wing of a frame or the like as the compressed adhesive material expands in a direction toward the glass sheet and the frame. By compressing the adhesive material and the amount inserted into the adhesive gap can be reduced because no longer the entire adhesive gap must be filled with adhesive material. This can bring economic benefits. In the following, the first exit channel is understood as the channel trailing in the direction of movement of the adhesive nozzle. As a second outlet channel is the in

Movement direction leading channel understood. The following is about it

assumed that the cross section of the first outlet of the first

Outlet channel is greater than the cross section of the second outlet opening of the second outlet channel. A cross section is understood to be the flow cross section through which the adhesive material flows and which is provided perpendicular to an outlet channel central axis. As a glue nozzle in the context of the invention, the section of a

Understood nozzle head, which faces the adhesive gap. The adhesive nozzle may be formed integrally or in several parts with the nozzle head.

It should be noted that embodiments are also conceivable in which the leading direction in the channel has a larger cross section than the trailing in the direction of the channel. In a preferred embodiment, first adhesive material on the second

Outlet opening with the smaller cross-section and then discharged adhesive material over the first outlet opening. This ensures that the over the second Exit opening escaped adhesive acts as a barrier in the adhesive gap for the leaked from the first outlet adhesive material. In the end, can

According to the invention, the position or penetration depth of the adhesive material in the adhesive gap can be adjusted in a simple manner, since the adhesion of the adhesive material in the adhesive gap takes place where the adhesive material leaked out of the first outlet opening strikes the adhesive material that has emerged from the second outlet opening. Preferably, the adhesive material is compressed in a region of the adhesive gap which is provided between the adhesive nozzle and the adhesive gap bottom. As mentioned above, the penetration depth of the adhesive material depends on the cross-section of the outlet openings.

In a preferred embodiment, the outlet openings of the outlet channels in a direction of movement of the adhesive nozzle, in which the adhesive nozzle is moved when discharging the adhesive material, can be arranged one behind the other. That is, in one

End face of the glue nozzle a connecting axis between the

Outlet opening centers of the two outlet openings to one in the

Movement direction extending axis of movement of the adhesive nozzle is in alignment. By such an arrangement of the outlet openings, the compression is increased to the already applied from an outlet opening adhesive in an advantageous manner. Alternatively, the outlet openings relative to the direction of movement of the

Adhesive nozzle be arranged one behind the other in such a way that their

Exit opening centers are arranged offset with respect to the direction of movement of the adhesive nozzle or a connecting axis between the

Outlet opening points to the axis of movement of the adhesive nozzle is not in alignment. Furthermore, the outlet openings may be arranged such that a

Connecting axis between the Austrittsöffnungsmittelpunkten perpendicular to the

Movement axis of the adhesive nozzle is. In the case of a plurality of outlet openings, any arrangement of the outlet openings relative to each other is conceivable, which may be formed as a function of the adhesive gap to be bonded.

The outlet channels may be formed within the adhesive nozzle such that the course of the outlet channel central axes of the two outlet channels is parallel to each other or not. By a corresponding design of the outlet channels to each other, a compression of the applied adhesive can be further increased. This in turn can bring an improved quality of the bond with it. The outlet channels can be provided in the adhesive nozzle such that between the

Movement axis of the adhesive nozzle and at least one outlet channel central axis forms an obtuse angle α, ß, which in turn improves the compression of the adhesive. The angles α and β may be in the range between 90 ° and 180 °, preferably between 100 ° and 110 °, and may or may not have the same value. Of course, it is possible in the presence of more than two outlet channels that, depending on the intended use of the adhesive nozzle, the outlet channel central axes parallel to each other or not parallel to each other.

Also, the adhesive nozzle or a part of the adhesive nozzle, which is provided with an outlet channel, may be made of an elastic material. The outlet channels and / or the adhesive nozzle may be provided heated. Thus, a preheating of the discharged adhesive material can be achieved, which in turn a simpler

Processing of the adhesive material can allow. The outlet channels can be connected to the same adhesive inlet. Alternatively, the outlet channels can be connected to separate adhesive feeds. The

Provide separate adhesive runs points when using two- or

Mehrkomponentenkleber has the advantage that the individual components of the adhesive mix only when exiting the glue nozzle with each other.

In an advantageous embodiment of the invention may be provided on the adhesive nozzle at least one bore which is connected to the inlet channel. A

Bore center axis may be perpendicular to the Zulaufkanalmittelachse. An adjusting screw for adjusting the cross section of the inlet channel can be inserted into the hole. Another bore may be connected to a conduit via which, for example, a further component of a multi-component adhesive is supplied to the adhesive nozzle. It is to be noted that the present invention and its embodiments can not be used only for applying adhesive material when mounting glass sheets in a frame, especially a sash. Rather, the invention is generally suitable to use adhesive material in joints of many kinds, such as when laying down, etc.

Furthermore, it should be noted that the material applied by the adhesive nozzle does not have to be exclusively adhesive material. It is equally conceivable that the nozzle is used, other materials in designated gaps or joints

For this reason, in the context of this application, "adhesive nozzle", "adhesive material", etc. are to be read by way of example for those fields of application in which viscous materials are to be introduced through a nozzle into a cavity or joint, etc. Without completely filling up this cavity or this joint, etc. Of course, however, the present invention is also capable of completely filling cavities.

Other objects, advantages, features and applications of the present invention will become apparent from the following description of a

Embodiment with reference to the drawings. All the described and / or illustrated features make themselves or in any sense more meaningful

Combination of the subject matter of the present invention, also independent of their inclusion in the claims and their dependency. Show:

1 shows a schematic representation of a nozzle head with an adhesive nozzle according to the invention for bonding glass panes, FIG. 2 shows a detailed view of the nozzle head with adhesive nozzle according to the invention,

3 shows an enlarged view of the adhesive nozzle according to the invention from FIG. 1, FIG. 4 shows a cross-sectional view of an adhesive nozzle according to the invention.

Fig. 1 shows a nozzle head 10 for bonding a glass sheet 11 with a

Frame 12, bsp. a window or door frame. The frame 2 has a first portion 121 which is parallel to an end surface of the glass sheet 11 facing the frame 12, and a second portion 122 which is parallel to a glass sheet side facing the interior space I and the exterior space A, respectively. The first portion 121 of the frame 12 is connected to the second portion 122 so that the frame 12 is substantially L-shaped in a side cross section

is trained. The glass pane side pointing to the exterior space A rests on the second section 122 of the frame 12 via a spacer means 20 and is arranged such that between the end face of the glass pane 11 facing the first section of the frame 12 and the first section of the frame 12

Adhesive gap 13 is formed.

The nozzle head 10 has at its the adhesive gap 13 facing the end of a

Adhesive nozzle 1 on. The adhesive nozzle 1 is, as will be described in detail later, designed such that it is placed on the second portion of the frame 2 parallel glass sheet side and applied an adhesive in the adhesive gap 13.

2 shows a detailed view of the nozzle head 10, which is connected at one end to a mixer 14 and at the end facing away from the mixer 14 with the adhesive nozzle 1. The mixer 14 is provided to the material to be applied, here preferably adhesive, in the nozzle head 10 and ultimately in the adhesive nozzle. 1

contribute. The adhesive nozzle 1 and thus the nozzle head 10 and the mixer 14 can move along a direction of movement B. The adhesive nozzle 1 has at an adhesive gap 13 facing end face 2 of

Adhesive nozzle 1 a first outlet opening 3 and a second outlet opening 4, as shown in Fig. 3. For better description, in FIG. 3, an area of End face 2, in which the Austrittsöff openings 3, 4 are formed, referred to as a lower area. An area of the gluing nozzle 1 opposite to the lower area of the end face 2 is referred to as an upper area. The front side 2 and thus together also the entire cross section of the adhesive nozzle 1 tapers from the lower region upwards to a predetermined width.

The outlet openings 3, 4 are formed in an edge region of the end face 2. The end face 2 of the adhesive nozzle 1 has a constant width in the area in which the outlet openings 3, 4 are arranged. The outlet openings 3, 4 in the embodiment shown along the direction of movement B, in which the adhesive nozzle is moved during the application of the material, arranged one behind the other. That is, a connection axis, not shown in the figures, between the

Exit opening center points to the direction of movement B is in alignment. The second outlet opening 4 has a smaller cross-section than the first outlet opening 3.

The adhesive nozzle 1 also has in an adhesive nozzle side 7, perpendicular to the

End face 2 is, preferably two holes 5. The holes 5 are threaded. About the holes, the adhesive nozzle 1 with other components not shown in the figures, such as an adjusting screw and / or another Ktebmaterialzulaufleitung be connected.

Fig. 4 shows a cross section through the adhesive nozzle 1 in the preferred

Embodiment of the invention. Starting from each of the first and second

Outlet opening 3, 4, the adhesive nozzle 1 holes, which are referred to below as outlet channels 3A and 4A. The outlet channels 3A, 4A extend from the outlet openings 3, 4, that is, from the end face 2 of the adhesive nozzle 1, into the interior of the adhesive nozzle 1 in the direction of the nozzle head 10 shown in FIG. 2. In this case, the outlet channels 3A, 4A are in the adhesive nozzle 1 arranged that the

Exit channel centerlines A1, A2 parallel to each other and with the

Movement axis extending in the direction of movement B of the adhesive nozzle 1, an obtuse angle α, ß include. Inside the adhesive nozzle 1, the outlet channels 3A, 4A are connected to an inlet channel 6. The inlet channel 6 is in the preferred embodiment a

Center hole in the adhesive nozzle 1 and extends in a direction which faces away from the end face 2. The inlet channel 6 is arranged in the adhesive nozzle 1 such that an inlet channel central axis Z1 does not run parallel to the outlet channel central axes A1, A2. The inlet channel central axis Z1 runs perpendicular to the axis of movement of the adhesive nozzle 1. The inlet channel 6 is connected to the nozzle head 0 via a channel, not shown in the figures. Thus, a continuous channel from the glue nozzle 1 to the mixer 14 is provided.

The diameters of the outlet channels 3A, 4A correspond to the diameters of the associated outlet openings 3, 4. However, the diameter of the second outlet channel 4A is smaller than the diameter of the first outlet channel 3A. The following is a brief description of how the adhesive nozzle 1 is used.

The adhesive nozzle 1 according to the invention is connected to a nozzle head 10, through which the material to be applied is to be introduced into an adhesive gap 13. For this purpose, the adhesive nozzle 1 is placed with the end face 2 on a surface of the glass sheet 11 such that the part of the adhesive nozzle 1, which is provided with the outlet openings 3, 4, protrudes beyond the edge of the glass sheet 11, and the remaining part of the end face second the adhesive nozzle 1 rests on the glass pane 11. The gluing nozzle 1 is moved in this position along the edge of the glass sheet 11 while

Adhesive material by applying a pressure through the mixer 14 through the inlet channel 6, the outlet channels 3A, 4A and finally the outlet openings 3, 4 occurs. Due to the above-described formation of the outlet channels 3A, 4A in the adhesive nozzle 1, the adhesive material passes in a direction opposite to the movement axis B of the adhesive nozzle 1 from the end face 2 in the adhesive gap 13 between the glass sheet 11 and the

Frame 12 off. Due to the plurality of outlet openings 3, 4 thus takes place a multi-stage discharge of the adhesive material. This leads to a mutual

Compression of the applied adhesive material from the individual outlet openings 3, 4. The pressure applied adhesive material compresses from the first

Outlet opening 3, the adhesive material that has already been discharged from the second outlet opening. In addition, of course, from the respective

Outlet opening 3, 4 already discharged adhesive compressed by the further discharged material. In this way, a better compression of the applied adhesive material can take place and the amount of adhesive material to be discharged can be optimized and reduced to a necessary minimum. In particular, the amount of adhesive to be used can be adapted to the thickness of the glass sheet 11.

A corresponding embodiment of the adhesive nozzle can also be another

Allow compression, for example by varying the diameter of the outlet openings or the outlet channels. In addition, the components of two- or multi-component adhesive can be discharged through different channels. Furthermore, by providing a heating of one of the channels - inlet or outlet - the discharge, for example via the viscosity, can be improved. It is also conceivable that the entire glue nozzle is heated for this purpose. This can also serve to better clean the nozzle.

Claims

claims

1. Adhesive nozzle (1) for introducing adhesive material into an adhesive gap (13) with a first outlet channel (3A) and a first outlet opening (3), wherein the adhesive nozzle (1) has at least one second outlet channel (4A) with a second outlet opening (4 ), wherein at least one outlet opening (4) has a smaller cross-section than at least one further outlet opening (3). , Adhesive nozzle (1) according to claim 1, characterized in that at least two of the outlet channels (3A, 4A) are connected to a common inlet channel (6). , Adhesive nozzle (1) according to one of the preceding claims 1 or 2, characterized in that the cross sections of the outlet openings (3, 4) differ in such a way that different discharge widths of the adhesive material are achieved. , Adhesive nozzle (1) according to one of the preceding claims, characterized

in that a first outlet channel central axis (A1) of the first outlet channel (3A) runs parallel to at least one second outlet center axis of the (A2) second outlet channel (4A). , Adhesive nozzle (1) according to one of the preceding claims 1 to 3, characterized in that the profile of a first outlet channel central axis (A1) of the first outlet channel (3A) of a course of a second

Outlet passage center axis (A2) of the second outlet channel (4A) differs. , Adhesive nozzle (1) according to one of the preceding claims, characterized

characterized in that between a in the direction of movement (B) of the

Adhesive nozzle (1) extending movement axis and at least one of

Exit channel centerlines (A1, A2) forms an obtuse angle (<x, ß).

7. adhesive nozzle (1) according to one of the preceding claims, characterized

in that at least a part of the adhesive nozzle (1), in particular of the outlet channels containing part of the adhesive nozzle (1) is made of an elastic material.

8. adhesive nozzle (1) according to one of the preceding claims, characterized

in that at least one of the outlet channels (3A, 4A) and / or the adhesive nozzle (1) can be heated.

Adhesive nozzle (1) according to one of the preceding claims, characterized

in that the adhesive nozzle (1) is designed in such a way that the material applied through an outlet channel (3A, 4A) is a different material than the material applied by at least one other outlet channel (3A, 4A).

Adhesive nozzle (1) according to one of the preceding claims 2 to 9, characterized in that in the adhesive nozzle (1) at least one bore (5) is provided, which is connected to the inlet channel (6).

11. A method for introducing adhesive material into an adhesive gap, wherein in a method of the adhesive nozzle (1) along a direction of movement B the

Adhesive material, which emerges through an outlet opening (3, 4), encounters adhesive material which has already been applied via at least one other outlet opening (4 or 3) and effects a compression of adhesive material in the adhesive gap (13).

12. The method according to claim 11, characterized in that at least two outlet openings (3, 4) in a direction of movement of the adhesive nozzle (1) are arranged such that upon movement of the nozzle relative to the adhesive gap (3) first adhesive material from the outlet opening (4th ) is applied in the adhesive gap (13), which has a smaller cross-section than the outlet opening (3), via which the adhesive material is applied, which meets the already applied adhesive material.