DE2262809A1 - PROCESS FOR THE CONTINUOUS MANUFACTURING OF ASSEMBLED SEALING ELEMENTS - Google Patents

Description

Process for continuous production

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composite sealing elementsj ·?

For the body series of motor vehicles are profiled Decorative elements are known to be found on various parts to improve the appearance of vehicles and also serve as a basis for fastening and attaching a certain number of sealing elements.

Most often these profiled decorative elements, which are made of stainless steel, of polished metal protected against oxidation, with adjacent ones Sealing elements connected, their attachment by pressing or squeezing, riveting or stapling or else connected by the simultaneous arrangement of several parts.

In general, these metallic decorations and the sealing elements that complete them become too

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made of a unit, i.e. that one shoulder of the sealing element predetermined length on a profiled decorative element of the same length during a separate one and independent manufacturing process of each part. This increases the productivity of such elements which are used in very large series are considerably limited.

The invention is based on the object of increasing this productivity and at the same time increasing the manufacturing costs lessen by running this discontinuous manufacturing process through continuous manufacturing facilities and method of a composite profile replaced, wherein the decorative part and the sealing part can be connected and joined together on a single production line at the same time.

The invention is explained below with reference to FIGS. 1 to 15, for example. It shows

Figure 1 is a schematic perspective illustration a production line of a composite profile according to the invention,

FIG. 2 shows a cross section of each of the structural elements of an assembled sealing element;

FIG. 3 shows a cross section of an assembled sealing element according to the invention,

FIG. 4 shows a cross section of an assembled outer disc sealing element according to FIG Invention that is attached to the edge of an outer sheet metal of the vehicle door,

Figure 5 shows a cross section of a modification of the assembled sealing element, in which the sealing

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and the drying of the disc through a small tube made of a cellular elastomer be ensured that is provided with a flocked wall and that is also arranged in this way is that it covers the door panel,

FIG. 6 shows a cross section of a further modification of the composite seal, which ensures the decoration and sealing of the inside of the door, '·

Figure 7 shows a further modification of the composite outer .Scheibendichtung element, which is attached to the Edge of an outer sheet of the vehicle door is arranged.

Figure 8 shows a further modification of the composite sealing element which provides the decoration and sealing the inside of the door.

Figure 9 shows a further modification of the composite Washer seal element that is flocked and crimped to the decorative strip is,

FIG. 10 shows a cross section of a modification of the assembled sealing element for framing the Door that serves as a decorative strip and to seal its solid frame, only partially shown is,

FIG. 11 also shows a cross section of a further modification of the assembled sealing element for framing the door with part of its fixed frame,

Figure 12 also shows a cross section of a modification of the assembled sealing element for a

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framing eggs door with part of it as a cover serving framing,

FIG. 13 shows a perspective illustration of an attachment of the assembled sealing element according to FIG the invention, which has a curvature,

Figure 14 is a side view of a vehicle door, the window frame by covering with a composite sealing element is decorated according to the invention, which at the same time the tightness on the circumference, and

FIG. 15 shows a composite sealing element according to the invention with wedge-shaped incisions to shape it.

Neither the type of manufacture of a plastic profile nor the profile used for sealing is shown in these figures as they are common and well known.

For the production of the plastic profile, which is a polished and anti-reflective aluminum tape or a metallized one If the tape is covered with Mylar, an extruder that is provided with a transverse head is usually used it allows due to a known training, the aluminum tape with transparent plastic material that commercially known under the name A.C.B., to plating or to envelop.

At the exit of the transverse head, the tape, which is covered with plastic material, runs through a conventional arrangement of Pulling and shaping devices with temperature regulation, so that the combined effect of the profiling and the tapering the entrance of these forming devices together with an increase in the temperature of the plastic material

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until it softens, the shape of the extruded strip according to a certain profile in Achieved depending on the desired application.

The band of polished aluminum coated or encased with a transparent plastic material is very well suited for its function as a decorative strip, regardless of its profile.

In a known manner, the sealing profile is made from rubber and generally from a full or cellular one Extruded elastomer, then continuously vulcanized and so manufactured in a very great length according to the profile determined by the injection nozzle. One Suitable surface treatment can be the tightness or the scraping as well as the drying of the panes by reducing the coefficient of friction.

This can be done, for example, by flocculation of the part of the sealing element be achieved that touches the disc or by using an elastomer with is coated with a paint based on polyurethane or a fluorine-containing material.

As Fig. 1 shows, the combination and interaction of the metallic tape 1 covered with transparent plastic material coated and profiled or not profiled is, and which is provided in the manner indicated above with a sealing element 2, which on conventional Art is made, according to the invention very quickly and economically continuously by means of the molding device 3 are produced, the means for joining the converging profiles to be arranged side by side and a burner for heating up to the softening temperature of the plastic material, so without interruption the continuity a connection of the arrangement

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be it to be achieved by gluing or squeezing, which ensures a high production speed which also increases the productivity of the improved facilities.

The molding device 3 can carry out the first profiling with plastic coated metal strip 1 at the same time with the assembly of the sealing profile 2 at the exit of the spray head. This avoids that this process is and can be carried out separately however, utilize the injection molding heat and thereby reduce the amount of heat from the burner 4, while in all In cases the molding device 3 is expediently combined with a cooling device 5, for example with water circulation is.

To carry out the described process by squeezing and joining the two named profiles, the sealing tape, which is generally tubular, according to FIGS. 2 and 3, has a hollow profile 6 with a projection 7 which is expediently in the form of a cylinder or a rhombus, and that is arranged continuously in the recess 8 of the plastic decorative profile 9 which is provided for this purpose, and the two lips that delimit this recess are made by the molding device 3 bent over onto the projection 7 of the sealing profile 6 in such a way that they hold it in place.

The molding device 3 is followed by a cooling device 5. After the attachment 7 has been received between the tongues of the recess 8 under the action of the heat from the burner 4 gives them the following sudden cooling a final shape that holds the approach 7 in place.

The same procedure is followed for the various embodiments of FIGS. 4-8 and 10-12. In a known way, the plastic-coated decorative profiles themselves have an elastic sealing

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ORIGINAL INSPECTED

lip 10 different types, but the same Fastening approach 7 is retained and the sealing profiles are no longer tubular, but only a simple one Lip 11 are, as FIGS. 4, 7 and 11 show.

To the procedure, not just by squeezing, but also To be able to carry out by gluing, the sealing profile 11 of FIG. 9 has a flat projection 12, which previously the surface that the plastic-coated tape 13 contacts an adhesive or a binding agent, the adhesive for connecting these elements as well as serves to ensure compatibility between the materials, which is ensured by the adhesive or a suitable coating will. You can do this with a softening through limited heat input to the candidate Combine parts.

FIG. 6 also shows that the method according to FIG Invention also allows the profile 9 to be extruded with a second notch recess 14, which will eventually be discontinuous trimmed serves as a clamp for arranging the sealing element over suitable recesses, which in are cut out of the sheet metal.

Likewise, FIGS. 10, 11 and 12 show that this interaction in the fastening by the direct elastic Deformation of the decorative profiles 15, 16 and 17 can be achieved, now as a clip or locking device 18 or 19 are formed.

13, 14 and 15 also show that a simplified manufacture of the composite profiles according to the invention by simply cutting notches 20, the production of curvatures on the periphery of the door without interruption the continuity of the sealing bead allows. This enables continuous closure of

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that would otherwise cause noises and whistling.

The scope of the invention thus extends to already common finishing operations for assembling composite Sealing elements on automobile bodies, e.g. by bending the ends so that the rounding arcs on the reinforced plastic part that forms the trim, more suitable for fastening these ends by clips Shape or for heat bending as well as for welding e.g. of corner connections.

Claims (4)

Claims 1. Process for the production of composite profiles, which consist of a decorative part and a sealing part and of suitable materials are extruded, characterized in that the Gluing or simultaneous joining of the various profiles continuously on a single one Production line by means of a molding device that the shaping or at least the mutual joining of the two profiles in connection with heating up to the calibration temperature with an immediately following sudden cooling. 2. The method according to claim 1, characterized in that crekeririze Lehnet the mutual agglomeration or summarization of the two profiles of the assembled dich tuner element with a final click of the decorative element on the structure to be decorated cuifgrund der eLgenen elastic deformations is combined. 3. The method according to claim L and 2, characterized by Wedge-shaped cutouts on the lengthening profile L L for Making bends without breaking the continuity of the sealing part. 4. The method according to claim L, 2 or 3, characterized in that the usual Endbearbeltungsvorgänge by bending the ends, by rounding arcs that engage in brackets, or by heat bending as well as by welding in particular corner connections are carried out. 30932ß / 0947 BAD ORSOiNAL