DE102007018790A1 - Seal profile sections connection establishing method for sealing front door of motor vehicle, involves injecting foaming mass into hollow chambers, such that foaming mass is distributed for connecting profile sections to hollow chambers - Google Patents

Abstract

The method involves positioning profile sections (30, 40) such that front surfaces (32, 42) of the profile sections are oppositely arranged with each other. A foaming mass is injected into hollow chambers (34), such that the foaming mass is distributed for connecting the profile sections to the hollow chambers, where the injection time ranges between 1 to 3 seconds. One of the hollow chambers is compressed at a preset distance from one of the front surfaces during injection of the foaming mass. An independent claim is also included for a device for establishing a connection between profile sections.

Description

The The present invention relates to a method for producing a Connection between profile sections and a device for Producing such a butt joint. Further concerns the invention a seal, in particular for sealing a closing element a motor vehicle comprising such profile sections, wherein the profile sections with their faces opposite are arranged.

Conventionally, the production of a connection between two profile sections, in particular between two sealing profile sections, by gluing or welding of the abutting surfaces of the abutting areas takes place. For example, is from the EP 0 282 919 B1 an existing rubber disc surround for moving windows of a motor vehicle. The disk enclosure is formed as a closed frame having a joint at which the adjacent end portions of the frame are bonded together by vulcanization. Furthermore, from the DE 44 02 822 C2 a method for the production of butt joints, in which a thin polyethylene layer is applied by means of a plate at the junction of two profile sections. The plate is wetted with heated, liquid polyethylene for this purpose. The applied polyethylene layer ensures that the physical values for the deflection of a hollow chamber of the profile sections in the area of the joint are achieved. Finally, out of the WO 01/89811 A1 a method for producing a butt joint is known in which an air-permeable film is used.

It However, has proved to be disadvantageous that for the production of a Connection between profile sections an increased effort This requires that first the profile sections be brought to a suitable position predetermined length so that the joint surfaces to be joined opposite and then the abutment surfaces can be connected to each other. Only then For example, the connected profile can be attached to a door frame be mounted to seal a door opening.

Of the Invention is based on the object, a method and an apparatus to specify a connection between profile sections, making the connection easy and in an automated way Process for a variety of different sentences can be created by profile sections. Furthermore, a suitable Seal be specified.

to Solution of this task is in accordance with claim 1, a method for making a connection between profile sections, each having an end face and each one opening into the end face hollow chamber have, provided, wherein the profile sections positioned so be that the end faces of the profile sections opposite are arranged and an intumescent mass in at least one of the hollow chambers is injected in such a way that the foaming Mass distributed to connect the profile sections in the hollow chambers.

The Foaming mass can optionally in only one, several or all cavities are injected. When injecting in several Hollow chambers may be injection successively or substantially take place simultaneously. Advantageously, this method fully automated, with the lathering Mass by means of a single injection head in one or more Hollow chambers is introduced.

advantageous Embodiments of the method according to the invention are in the associated dependent claims 2 to 13 described.

at a preferred embodiment is the Injection time, during which the foaming mass injected into the at least one hollow chamber of the profile sections is between about 0.5 s and about 5 s, preferably between about 1 s and 3 s. Thus, the amount of the intumescent Mass be determined by the injection time. The injection time depends essentially on the cross section of the hollow chambers and the desired penetration depth of the foaming mass into the hollow chambers.

According to one preferred development of the method will be at least one of Hollow chambers of the profile sections at a predetermined distance from one of the faces during injection of the foaming mass compressed, preferably the distance from the face between about 30 mm and about 100 mm. The compression causes a throttle effect that builds up a certain pressure, causing the Hollow chambers in the area of the joint better with the foaming Mass be filled.

To achieve the most accurate flush butt joint, the end faces are cut before positioning the profile sections. This is preferably done fully automatically with a cutting device. This made light the provision of a profile forming the profile profile as an endless product. This endless product can for example be delivered and kept on a roll, for example a coil. In this way, on the previous storage of already tailored profile be omitted, resulting in a cost savings. Alternatively, the profile sections or end faces can be sawed or punched. The faces can be flat, but unevenness of the faces can be compensated by the foamed mass.

at In a preferred embodiment, the profile sections positioned so that the end faces at a joint collide. In the event that the foaming Mass consists of a material that is a cohesive Connection with the profile sections, the Profile sections in a colliding, that is at least in places touching position permanently be connected to each other. Alternatively, the End faces of the profile sections spaced from each other be arranged, for example with a gap of up to 10 mm, the foamed mass depending on the material used for this mass a cohesive connection enters with the profile sections and fill the gap can or no material connection with the profile sections enters and forms a kind of plug, in the hollow chambers at least is guided slightly axially displaceable and keeps the profile sections in their mutual position permanently.

In preferred development, the profile sections are trimmed in such a way and / or positioned at the joint an opening is formed. Preferably, the opening is through a Stage provided on at least one of the end faces is formed. So the foaming mass after the Injection process visible on the surface. With others Words arise in the area of the opening respectively the step a projection or plug, the form-fitting is held in the opening / step and thus not moved can be. In addition, this can from the foamed mass formed projection or plug depending on the selected Composition of the material for the foaming Mass also cohesively connected to the profile sections be. If the frothing mass from the opening It can be a coating in the area of the joint on the outer surface of the profile section form.

advantageously, be the profile sections by means of a joint at least partially enclosing device positioned. This device explained in more detail below preferably has a receptacle corresponding to the outer contour the profile sections is shaped.

at a preferred development is the frothing Mass of a material that does not have a material bond enters with the material of which the device consists. Furthermore, can the foaming mass consist of a material that no cohesive bond with the material is received, from which the profile sections exist. After these refinements the foaming mass should not be sticky be, so no connection between the foaming Mass and the device and / or the profile sections arises. It may therefore be sufficient for the profile sections by means of the intumescent mass connect positively and / or non-positively.

in principle is preferably provided that the foaming mass a one-component foam or a two-component foam is. These foams can be based on polyurethane, for example be formed.

In preferred application, the profile sections are the end sections a seal leading to the formation of a closed ring with each other get connected. Advantageously, the seal is made of a elastomeric material, preferably of EPDM, extruded.

Further becomes in accordance with claim 14 a device proposed for establishing a connection between profile sections. The profile sections each have an end face and a hollow chamber opening into the end face. The device comprises a holding device which holds the profile sections at least partially surrounds in the region of the end faces and positioned such that the end faces of the profile sections are arranged opposite one another. There is also an injection mold for injecting an intumescent mass into at least one of the hollow chambers provided.

advantageous Embodiments of the device according to the invention are in the associated dependent claims 15 to 18 described.

advantageously, the holding device comprises at least one holding part for positioning one of the profile sections. Preferred is for each profile section provided a holding part, wherein the holding parts, for example, independently are movable from each other.

In preferred embodiment, the holding part has a receptacle, their surface is substantially complementary shaped to the outer surface of the profile section is.

In a further preferred embodiment, the holding device has at least one slide which engages the profile section in the receptacle pushes in or pushes out. The slider can cover the profile section area. More preferably, the holding part and / or the slide are provided with an opening through which a spout of the injection mold can be inserted.

In accordance with claim 19 is a seal, in particular for sealing a closing element a motor vehicle, with a first and a second profile section proposed. The first profile section comprises a first end face and a first opening into the first end face Hollow chamber. The second profile section comprises a second end face and a second opening into the second end face Hollow chamber. Furthermore, the first end face and the second Face opposite arranged. The first and the second profile section are through one in the hollow chambers injected, foamed mass interconnected.

advantageous Embodiments of the seal according to the invention are in the associated dependent claims 20 to 26 described.

at In a preferred embodiment, the first profile section and the second profile section through the foamed mass positively and / or non-positively connected. additionally or alternatively it can be provided that the first profile section and the second profile section through the foamed Mass cohesively connected to each other.

at an advantageous embodiment, the first end face and the second end face at a joint together. The positioning of the profile sections is special here just possible.

advantageously, form the first profile section and the second profile section at least one opening at the joint. Preferably the opening is formed by a step which at the first end face and / or the second end face is provided.

at Another preferred embodiment is a coating provided by the emerged from the opening foamed mass is formed. Such a coating prevents displacement of the inside of the hollow chambers located Sections of the foamed mass.

advantageously, the first profile section and the second profile section are end sections of the Seal, with the end sections through the foamed Mass are connected together so that the seal a closed ring forms.

In Regarding the method, the device and the seal is preferred provided that the first profile section and the second profile section in the state where the end faces are opposed and / or abut each other and / or interconnected are, extend substantially along a longitudinal direction, which is substantially perpendicular to the faces.

following The invention will be further explained with reference to the drawings. Here are shown schematically:

1 a view of a front door of a motor vehicle;

2 a cross section according to the line II-II in 1 by a seal according to the invention fixed on the front door with a perspective view of the seal;

3 a cross section according to 2 at the in 4 means indicated by the line III-III point showing a device according to the invention for establishing the connection with a holding device and an injection mold;

4 a longitudinal section along the line IV-IV by in the 1 to 3 illustrated seal after preparation of the compound, and

5 a longitudinal section according to 4 by a further embodiment of the seal according to the invention after production of the compound.

1 shows a view of a motor vehicle door 10 according to 2 a door frame as a rigid component 12 with two flanges 14 . 16 having. For sealing the motor vehicle door 10 opposite the body is a gasket 20 provided in the form of a sealing strand or sealing profile extending in a longitudinal direction X.

The seal 20 is on the rigid component 12 and includes a first end portion 22 and a second end portion 24 , The end sections 22 . 24 are at their ends at a joint 52 over a connection 50 by means of a foamed mass 70 connected together and form a closed ring.

Seen in cross-section, in particular from the 2 to 4 shows, the seal points 20 a sealing section 25 and a fixing portion 27 on. For fixing the seal 20 on the rigid component 12 is at the attachment section 27 an adhesive tape 29 appropriate.

Like a synopsis of 2 and 3 results, includes the attachment portion 27 essentially a thigh 28 that is attached to a base section 26 of the sealing section 25 followed. The thigh 28 or the sealing section 25 are from a first position (see 3 ) into a second position (see 2 ) pivotable. In the in 3 the first position shown closes the leg 28 and the base section 26 of the sealing section 25 a predetermined angle. This unfolded position is needed to perform the procedure explained below. After performing this procedure, the gasket becomes 20 transferred to the second position by the sealing portion 25 in the direction of the attachment section 27 is pivoted so that the thigh 28 and the base section 26 lie approximately parallel to each other.

Such as the 1 . 2 and 4 show, the first end portion 22 the seal 20 through a first profile section 30 educated. Its wall defines a first hollow chamber 34 in a transverse direction Y and a vertical direction Z, wherein the directions Y, Z each extend substantially perpendicular to the longitudinal direction X. In a plane that is substantially parallel to the vertical direction Z, the first profile section 30 end a first end face 32 at the same time an open end of the first hollow chamber 34 forms.

Likewise, the second end portion becomes 24 the seal 20 through a second profile section 40 formed, the wall of a second hollow chamber 44 limited in the transverse direction Y and the vertical direction Z. In a plane which is substantially parallel to the vertical direction Z, the second profile section has 40 a second end face 42 at the same time an open end of the first hollow chamber 44 forms.

As the 2 and 4 show are the faces 32 . 42 in the first embodiment of the gasket 20 arranged abutting each other over the entire wall cross-section, that is, are substantially completely in mutual contact. Minor bumps in the faces 32 . 42 however, can not be ruled out. This connection 50 the faces 32 . 42 thus forms a butt joint. At the in 5 shown further embodiment of the seal 20 are the faces 32 . 42 only in places abutting arranged. Alternatively to these two embodiments of the seal 20 may also be another embodiment of the seal 20 be provided at the end faces 32 . 42 spaced apart from each other. For example, a gap between the faces 32 . 42 be provided by up to 10 mm.

The following is a method of making the connection 50 in the form of a butt joint between the first profile section 30 and the second profile section 40 in the area of the joint 52 explained.

Before making the actual butt joint 50 is first tailored to a predetermined length seal 20 in the region of the attachment section 27 with the tape 29 provided and to the flange 16 appropriate. To perform this attachment, a fully automatic mounting device is preferably used, which is the seal 20 holds in the first spread position and a roll unit the leg 28 of the attachment section 27 along the longitudinal direction X over the entire circumference of the motor vehicle door 10 to the flange 16 presses.

After complete attachment of the seal 20 on the rigid component 12 become the end sections 22 . 24 positioned so that the end faces 32 . 42 at the junction 52 congruently abut each other. For this purpose, an in 3 indicated device 100 used.

This device 100 for producing the butt joint 50 includes a holding device 110 and an injection mold 120 , The injection mold 120 has an injection head 122 with a spout 124 on. The holding device 110 includes for positioning the first profile section 30 a holding part 111 with a recording 112 and a slider 113 , Around the free end of the spout 124 in the first hollow chamber 34 to be able to introduce, the slide shows 113 an opening 114 on. For positioning the second profile section 40 has the holding device 110 Furthermore, a holding part 115 with a recording 116 and a slider 117 on.

To a suitable holder of the profile sections 30 . 40 to reach the profile sections 30 . 40 by means of the slides 113 . 117 in the recordings 112 . 116 pushed or pushed. Now those in the shots 112 . 116 held profile sections 30 . 40 by means of the relatively movable holding parts 111 . 115 or recordings 112 . 116 with their faces 32 . 42 brought to coincidence and positioned abutting each other. In other words, encloses the holding device 110 the profile sections 30 . 40 in the area of the joint 52 at least partially, that is, to such an extent, so that sufficient retention of the profile sections 30 . 40 can be achieved during positioning and injection of the intumescent mass.

The next step is the injection mold 120 in the direction of the slider 113 emotional. As 4 shows, is the opening 114 in one predetermined distance D from the joint 52 , Then the free end of the spout 124 through the opening 114 of the slider 113 and through the base section 26 of the sealing section 25 in the first hollow chamber 34 pressed. The distance D is chosen so that the foaming mass 70 during the injection process sufficiently far into the hollow chambers 34 . 44 distributed.

The foaming mass 70 in the form of a one-component or two-component foam with a non-sticky material composition is now in the first hollow chamber 34 injected. The injection takes place in such a way that the foaming mass 70 both in the hollow chamber 34 as well as in the hollow chamber 44 over at least a predetermined section A, B from the joint 52 distributed. The injection duration or the volume of the injected mass 70 is to be predetermined so that the resulting after completion of the injection process distance A, B is in a predetermined tolerance range C. This tolerance range C is designed such that the foaming mass 70 after curing, a sufficient positive and / or non-positive composite of the profile sections 30 . 40 guaranteed. The injection process, for example, lasts between 1 and 3 seconds and can also be dependent on the cross-sectional area of the hollow chambers 34 . 44 be dimensioned in Y and Z direction. After completion of the injection process, the spout 124 from the first profile section 30 pulled out and the injection mold 120 from the joint 52 away.

After hardening of the foamed mass 70 over a predetermined period of time, the sliders become 113 . 117 moved back, leaving the holding parts 111 . 115 the profile sections 30 . 40 can share. Finally, the sealing section 25 folded up in the second position, so that the seal 20 in its intended position for sealing the motor vehicle door 10 located.

5 shows another seal 20 after making an alternative butt joint 50 , In this embodiment, the profile sections 30 . 40 in the area of the faces 32 . 42 one level each 62 on. In the abutting position of the profile sections 30 . 40 form the two stages 62 an opening 60 , This opening 60 is with in the context of producing the butt joint 50 injected mass 70 Mistake.

For making this butt joint 50 be first the profile sections 30 . 40 by appropriate cutting in the area of the end face 32 . 42 each with a step 62 Mistake. After the abutting positioning of the profile sections 30 . 40 by means of the holding device 100 as described above, these two stages form 62 in the abutting position of the profile sections 30 . 40 the opening 60 ,

During the injection process then enters the foaming mass 70 in the area of the opening 60 from the hollow chambers 34 . 44 so far in part out that after completion of the injection process, the outer surface of the Mas se 70 and the outer surface of the sealing portion 25 viewed in the longitudinal direction X are approximately in a plane.

In this way arises in the area of the opening 60 a projection or plug, since the diameter of the mass 70 in the area of the joint 52 greater than the diameter of the mass 70 in the area to the side of the opening 60 , This projection or plug prevents displacement of the hardened mass 70 in the longitudinal direction X and thus secures the connection of the profile sections 30 . 40 ,

Depending on the design of the holding parts 111 . 115 , especially the recordings 112 . 116 , the profile sections can 30 . 40 in an alternative development also with a through the opening 60 in the longitudinal direction X emerged foamed mass 70 formed coating 72 be provided. This cover 72 also prevents displacement of the projection in the longitudinal direction X.

The method described for producing the butt joint 50 , the associated device 100 and the seal produced by the method 20 are characterized in particular by the fact that the two profile sections 30 . 40 through one in the area of the joint 52 in the hollow chambers 34 . 44 injected foamed mass 70 connected to each other. Such a method is advantageously for an already on a frame of a motor vehicle door 10 fastened seal 20 suitable and can preferably be carried out fully automated. Here are the profile sections 30 . 40 provided by a portion of predetermined length of a sealing strip and after the attachment of the fastening portion 27 by means of the holding device 110 be pivoted to the appropriate position, then the foaming mass 70 to inject. In a preferred development, all method steps can be carried out fully automatically.

10

Motor vehicle door

12

rigid component

14

flange

16

flange

20

poetry

22

first end

24

second end

25

sealing section

26

base section

27

attachment section

28

leg

29

duct tape

30

first profile section

32

first face

34

first hollow

40

second profile section

42

second face

44

second hollow

50

connection

52

joint

60

opening

62

step

70

foaming Dimensions

72

coating

100

contraption

110

holder

111

holding part

112

admission

113

pusher

114

opening

115

holding part

116

admission

117

pusher

120

injection mold

122

Injection head

124

spout

A

distance

B

distance

C

Area

D

distance

X

longitudinal direction

Y

transversely

Z

vertical direction

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• EP 0282919 B1 [0002]
• - DE 4402822 C2 [0002]
• WO 01/89811 A1 [0002]

Claims (26)

Method for establishing a connection ( 50 ) between profile sections ( 30 . 40 ), each having an end face ( 32 . 42 ) and one in the frontal area ( 32 . 42 ) opening hollow chamber ( 34 . 44 ), comprising the following method steps: positioning the profile sections ( 30 . 40 ) such that the end faces ( 32 . 42 ) of the profile sections ( 30 . 40 ) are arranged opposite one another and injection of an intumescent mass ( 70 ) in at least one hollow chamber ( 34 . 44 ) such that the intumescent mass ( 70 ) for connecting the profile sections ( 30 . 40 ) distributed in the hollow chambers. Method according to Claim 1, characterized in that the injection time during which the intumescent mass ( 70 ) in the at least one hollow chamber ( 34 . 44 ) is injected between about 0.5 s and about 5 s, preferably between about 1 s and about 3 s. Method according to claim 1 or 2, characterized in that at least one of the hollow chambers ( 34 . 44 ) at a predetermined distance from one of the end faces ( 32 . 42 ) during the injection of the intumescent mass ( 70 ) is compressed, wherein preferably the distance from the end face ( 32 . 42 ) is between about 30 mm and about 100 mm. Method according to one of claims 1 to 3, characterized in that the end faces ( 32 . 42 ) before positioning the profile sections ( 30 . 40 ). Method according to one of claims 1 to 4, characterized in that the profile sections ( 30 . 40 ) are positioned such that the end faces ( 32 . 42 ) at a joint ( 52 ) abut each other. Method according to one of claims 1 to 5, characterized in that the profile sections ( 30 . 40 ) are so trimmed and / or positioned that at the joint ( 52 ) an opening ( 60 ) is formed. Method according to claim 6, characterized in that the opening ( 60 ) by a stage ( 62 ), which on at least one of the end faces ( 32 . 42 ) is formed, is formed. Method according to one of claims 1 to 7, characterized in that the profile sections ( 30 . 40 ) by means of a joint ( 52 ) at least partially enclosing device ( 100 ). Method according to claim 8, characterized in that the intumescent mass ( 70 ) consists of a material which does not form a material bond with the material from which the device ( 100 ) consists. Method according to one of claims 1 to 9, characterized in that the foaming mass ( 70 ) consists of a material that does not form a material bond with the material from which the profile sections ( 30 . 40 ) consist. Method according to one of claims 1 to 10, characterized in that the intumescent mass ( 70 ) is a one-component foam or a two-component foam. Method according to one of claims 1 to 11, characterized in that the profile sections ( 30 . 40 ) the end sections ( 22 . 24 ) a seal ( 20 ), which are connected together to form a closed ring. Method according to claim 12, characterized in that the seal ( 20 ) is extruded from an elastomeric material, preferably from EPDM. Contraption ( 100 ) to connect ( 50 ) between profile sections ( 30 . 40 ), each having an end face ( 32 . 42 ) and one in the frontal area ( 32 . 42 ) opening hollow chamber ( 34 . 44 ), comprising: a holding device ( 110 ), the profile sections ( 30 . 40 ) in the area of the end faces ( 32 . 42 ) at least partially surrounds and positioned such that the end faces ( 32 . 42 ) of the profile sections ( 30 . 40 ) are arranged opposite one another, and an injection molding tool ( 120 ) for injecting an intumescent mass ( 70 ) in at least one of the hollow chambers ( 34 . 44 ). Contraption ( 100 ) according to claim 14, characterized in that the holding device ( 110 ) at least one holding part ( 111 . 115 ) for positioning one of the profile sections ( 30 . 40 ). Contraption ( 100 ) according to claim 15, characterized in that the holding part ( 111 . 115 ) a recording ( 112 . 116 ) whose surface is substantially complementary to the outer surface of the profile section (FIG. 30 . 40 ) is shaped. Contraption ( 100 ) according to one of claims 14 to 16, characterized in that the holding device ( 110 ) at least one slide ( 113 . 117 ) comprising the profile section ( 30 . 40 ) into the recording ( 112 . 116 ) and / or pushes out. Contraption ( 100 ) according to one of the claims 14 to 17, characterized in that the holding part ( 111 . 115 ) and / or the slider ( 113 . 117 ) with an opening ( 114 ), through which a spout ( 124 ) of the injection molding tool ( 120 . 122 ) is insertable. Poetry ( 20 ), in particular for sealing a closing element ( 10 ) of a motor vehicle, comprising: a first profile section ( 30 ), which has a first end face ( 32 ) and one in the first end face ( 32 ) opening first hollow chamber ( 34 ), a second profile section ( 40 ), which has a second end face ( 42 ) and one in the second end face ( 42 ) opening second hollow chamber ( 44 ), wherein the first end face ( 32 ) and the second end face ( 42 ) are arranged opposite one another, characterized in that the first profile section ( 30 ) and the second profile section ( 40 ) through a into the hollow chambers ( 34 . 44 ) injected, foamed mass ( 70 ) are interconnected. Poetry ( 20 ) according to claim 19, characterized in that the first profile section ( 30 ) and the second profile section ( 40 ) by the foamed mass ( 70 ) are positively and / or non-positively connected. Poetry ( 20 ) according to claim 19 or 20, characterized in that the first profile section ( 30 ) and the second profile section ( 40 ) by the foamed mass ( 70 ) are cohesively connected to each other. Poetry ( 20 ) according to one of claims 18 to 20, characterized in that the first end face ( 32 ) and the second end face ( 42 ) at a joint ( 52 ) abut each other. Poetry ( 20 ) according to one of claims 19 to 22, characterized in that the first profile section ( 30 ) and the second profile section ( 40 ) at the joint ( 52 ) at least one opening ( 60 ) form. Poetry ( 20 ) according to claim 23, characterized in that the opening ( 60 ) by a stage ( 62 ), which at the first end face ( 32 ) and / or the second end face ( 42 ) is formed, is formed. Poetry ( 20 ) according to claim 23 or 24, characterized by a coating ( 72 ) passing through the opening ( 60 ) escaped foamed mass ( 70 ) is formed. Poetry ( 20 ) according to one of claims 19 to 25, characterized in that the first profile section ( 30 ) and the second profile section ( 40 ) End sections ( 22 . 24 ) of the seal ( 20 ), the end sections ( 22 . 24 ) by the foamed mass ( 70 ) are connected together in such a way that the seal ( 20 ) forms a closed ring.