DE102005062708A1 - Operating unit e.g. plastic holder, for holding motor vehicle-body part, has contact and interference sections that are elastically implemented, where unit is implemented in certain distance to fixation of body parts - Google Patents

Abstract

The unit has contact and interference sections that are elastically implemented and ensure a definite distance between a door inner plate and a door- outer plate, where the unit is made of electrical conducting and flocked plastic and is implemented in a certain distance to fixation of the body parts. A flock consists of electrical conductible material such as a carbon fiber and steel fiber, and a plastic part is laminated with the flock. The flock, plastic and the combination of flock and the plastic exhibit a temperature resistance of 190 centigrade.

Description

in the Automotive sector are in the painting process so far brackets or means of transport made of steel, and these are used several times. These Steel resources have the task during the painting process keep the components at a distance, so that the workpieces as possible on the entire surface evenly painted can be.

Furthermore should be an electrical conductivity guaranteed be, since in particular when priming the cathodic dip-coating relatively high electrical currents flow. After all must they Paint spacers also be stable enough so that the workpieces during the in-house transport and when driving through the dipping baths not falling off.

These Steel resources are very expensive to manufacture. she are used multiple times, but must be periodically, i. after about 20 passes, be stripped again and again.

isolated There are already solutions today Plastic, which is a relief to the steel resources represent. These can be as Spacers serve and thus an adequate replacement regarding represent the transport safety and the distance function. The problem here is that these parts are not electrically conductive and thus the requirements, in particular during priming, the so-called KTL process not suffice.

for action exists therefore in the question of electrical conductivity and in the problem, the contact area in the sum possible to keep small. This is intended by the bristle structure of the electric conductive Flock fibers are achieved. The flocking process includes the following Steps: - Apply of the adhesive (by brushing, spraying, knife coating, rolling, dipping etc.) on the basic structure (the substrate) - applying the flock with a flocking device - preferably in a strong electric field - drying or curing the Adhesive (for example, at room temperature or with heat or under UV irradiation) - cleaning, i.e. Removing loose flock fibers (by suction, blowing, tapping, To brush, Washing etc.)

A surface is flocked by first focusing on an object Flock adhesive is applied. In the still flowable adhesive are then flock fibers electrically injected.

When Substrate can serve any object whose surface is a Adhesion of the adhesive allows that is, the surface must be free of dust, oil, Silicone, etc., if necessary, so-called primers come into consideration to sufficient adhesiveness to achieve.

When Flock can in principle any - preferably electrically conductive - fiber be used. The most common Fibers are made of polyamide, viscose or polyester - but also Carbon - in Future also nano-carbon tubes. The thickness and length the fibers are selected according to the application. hereby can the handle - the Texture - the surface from velvety to brush-like be set. Also electrically conductive applications are feasible and provided in the application proposed here

Flock Can be applied to almost all base materials. The surface becomes thus velvety in appearance and grip and offers depending on the application various technical advantages. For example, flocking becomes used to exploit the heat and cold insulation, for soundproofing, as a seal, to prevent rattling and grinding noises, as a brush, Etc.

advantages the invention

The previously used steel equipment in the paint shop have the disadvantage that these sometimes very complicated to manufacture and thus are expensive. There these fixtures are co-coated in the painting process, have to she after several missions must be thermally or chemically stripped.

The Paint stripping involves the following steps: After removal (Removal) must the resources are sorted by type. Since in the painting process, the movable Parts of the equipment, such as screws lose their mobility and thus inoperative Need to become these are manually made movable again. The total stripping activity is increasing Loads of the supplier or the vehicle manufacturer, which is clear not part of their core tasks and thus uneconomical.

By the new development should make the resources a full-fledged one Replacement over represent the steel resources.

The newly designed equipment can be much easier handle and have to not, as usual, be precisely attached to the specific shape of the body, so that now z. As the screw thread or existing holes for anchoring can be used. moreover are the proposed equipment electrically conductive.

Especially It is advantageous that in this type of attachment damage to the Paint on later visible places is virtually impossible - and at a high electrical Conductivity.

Reference numeral list

1 Principle of the job with flock on a base body

2 Example of transport protection in flock technology

3 Example of transport protection in flock technology

4 Example of transport protection in flock technology

Claims (7)

Operating means for mounting a vehicle body component while a machining operation in vehicle construction, characterized by that it is made of an electrically conductive and flocked plastic exists, and the equipment preferably as an electrically conductive plastic holder for insertion between two or more body parts and their Fixation is carried out at a certain distance from each other. Components or equipment for mounting after Claim 1, characterized in that the flock and the Plastic as well as the combination of both a temperature resistance from about 190 ° C having. Components or equipment for mounting after the preceding claims, characterized in that the contact and engagement sections elastic and these also also, for example, between door inner and outer door panel ensure a defined distance and at the same time electrically conductive are. Components or equipment for mounting after the preceding claims, characterized in that the flock coating in a manner accomplished is that as a result of the large number of fine contact needles of the flock despite good contact a very small surface for contacting to conditions comes. Components or equipment for mounting after the preceding claims characterized in that the flock-coated plastic parts so universally executed are they for Other applications can be used, such as hood holder and trunk holders. Components or equipment for mounting after the preceding claims, characterized in that the flock of electrically conductive material, such as. Carbon fiber or steel fiber exists Components or equipment for mounting after the preceding claims, characterized in that the for the application of the flock used adhesive is also electrically conductive.