DE102017201366A1 - Injection molding apparatus and method for injection molding a component for a motor vehicle - Google Patents

Abstract

The invention relates to an injection molding apparatus (1) for injection molding a component (100) for a motor vehicle, the injection molding apparatus (1) comprising: a base mold (10) adapted to form a negative of an outer mold for the component to be manufactured; a locking device (20) which is adapted to lock a stamped grid with respect to the base mold (10) for an overmolding process; a grain device (30) which is designed to approach an additional mold to a predetermined position of the component to be produced after the locking of the stamped grid; and an encapsulation device (40), which is designed to overmold the locked stamped grid for the production of the component and to form a machine-readable position recognition at the position approached by the grain device (30).

Description

Technical area

The present invention relates to injection molding systems for motor vehicles.

In particular, the present invention relates to an injection molding apparatus and a method for injection molding a component for a motor vehicle and a corresponding injection molding component as a component of an electronic control unit.

Technical background

Due to ever smaller installation spaces in electronic housings, it is important to make the best possible use of the available bond areas of the stamped grid.

The wire bonding, referred to in English as "bond", comprises in manufacturing a method step in which the terminals of an electrical component are connected to the electrical terminals of other components or of the electronics housing by means of thin wires, for example thin aluminum wires.

This can be done by cold welding or cold press welding.

This means to provide as many bonding surfaces per area, this in turn requires the use of the smallest possible stamped grid and therefore calls for robust manufacturing processes with respect to occurring tolerances.

In the case of the processes currently used in production, the bonding machine measures and detects approximately existing outer edges of the bond stamped grid.

The window, in which the bonds are set, has manufacturing tolerances to the outer edges. Therefore, the bond window must be made correspondingly large, or the number of bonds to be placed is correspondingly low.

The accuracy depends, among other things, on the transition of the outer edge, the punching mechanism, chamfering of the edges or the distance to the bonding point. For alignment in the x and y direction two edges are to be detected.

The current space constraints and, moreover, the higher power requirements, as illustrated above, often require multiple bonds, require an improved solution.

Summary of the invention

It is an object of the present invention to provide, in terms of bondability, an improved injection molding apparatus and method for injection molding a component for a motor vehicle and a corresponding improved injection molding component.

This object is solved by the subject matters of the independent claims. Further developments and embodiments can be found in the dependent claims, the description and the figures of the drawings.

A first aspect of the present invention relates to an injection molding apparatus for injection molding a component for a motor vehicle, the injection molding apparatus comprising: a base mold adapted to form a negative of an outer mold for the component to be manufactured; a locking device which is adapted to lock a stamped grid with respect to the base mold for a Umspritzprozess; a grain device, which is designed to approach an additional mold to a predetermined position of the component to be produced after the locking of the stamped grid; and an encapsulation device, which is designed to overmold the locked stamped grid for the production of the component and to form a machine-readable position recognition at the position approached by the grain device.

The present invention advantageously makes it possible to provide an introduction of a very precise machine-readable position detection. This includes a machine-readable position detection, for example in the form of image recognition points for the respective stamped grid in the bond area.

The image recognition points are generated, for example, via hydraulically controllable hold-downs or grains in the form of the grain device in the injection molding tool.

The present invention advantageously makes it possible to produce hybrid parts with improved machine-readable position markings, for example plastic parts or components with injected stamped grid. Here, punched grids are injected into plastic parts.

For the precise introduction of the image recognition points, it is advantageous for the hold-down devices to be approached with a time delay only after the tool has been moved in, when the stamped grids are already completely clamped in the injection molding tool, ie after completion of the molding process Arretierungsprozesses, ie the final fixation of the stamped grid in the injection molding apparatus.

No satisfactory result is achieved if the hold-downs or "grits" are firmly installed in the tool, i. are not made mobile, for example, without a hydraulic control.

The present invention advantageously makes it possible to prevent the punched grid inserts from moving laterally when closing the injection molding tool. This results in a blurred contour for this case, which is not suitable for the Bonderkennung.

The present invention advantageously makes it possible to introduce image recognition points into existing injection molding tools.

The present invention advantageously allows only an introduction of the controllable slide is necessary.

Advantageously, the present invention allows no further additional processes, tools, to be required to produce accurate machine readable position markings.

The present invention advantageously makes it possible to supplement existing projects.

The present invention advantageously makes it possible to achieve cost savings through lower item costs, as e.g. the use of small punched grid is possible.

The present invention advantageously makes it possible to make bonding processes more robust, since the bonds are positioned with exact position and the recognition is directly related to only one reference point.

The present invention advantageously enables the rejects to be reduced by improperly placed bonds. When bonding, i. a connection process in the construction and connection technology, for example, the expensive mechanical and electronic components are already installed and therefore a reduction in the reject rate of an advantage for cost-effective production.

The present invention advantageously makes it possible to unify the project across different bond windows and to achieve a reduction in complexity and / or costs in the design and installation of components.

• Als ein erster Schritt des Verfahrens erfolgt ein Bereitstellen von einer Basisform, welche ein Negativ einer Außenform für das herzustellende Bauteil formt mittels einer Basisform.
• Als ein zweiter Schritt des Verfahrens erfolgt ein Arretieren eines Stanzgitters in Bezug auf die Basisform für einen Umspritzprozess mittels einer Arretierungseinrichtung.
• Als ein dritter Schritt des Verfahrens erfolgt, nach dem Arretieren des Stanzgitters, ein Anfahren einer Zusatzform an eine vorbestimmte Position des herzustellenden Bauteils mittels einer Körnereinrichtung.
• Als ein vierter Schritt des Verfahrens erfolgt ein Umspritzen des arretierten Stanzgitters für die Herstellung des Bauteils und Ausbilden einer maschinenlesbaren Positionserkennung an der von der Körnereinrichtung angefahrenen Position mittels einer Umspritzeinrichtung.

A further, second aspect of the present invention relates to a method for injection molding a component for a motor vehicle, the method comprising the following method steps:

• As a first step of the method, there is provided a base mold which forms a negative of an outer mold for the component to be manufactured by means of a base mold.
• As a second step of the method, a stamped grid is locked relative to the base mold for an extrusion coating process by means of a locking device.
• As a third step of the method takes place, after locking the stamped grid, a start of an additional mold to a predetermined position of the component to be produced by means of a grain device.
• As a fourth step of the method, there is an encapsulation of the locked stamped grid for the production of the component and the formation of a machine-readable position recognition at the position approached by the grain device by means of an encapsulation device.

Another third aspect of the present invention relates to a component for motor vehicle manufacturable according to the method for injection molding of a component according to the second aspect or according to any embodiment of the second aspect.

A further fourth aspect of the present invention relates to a motor vehicle comprising a component according to the third aspect or to any embodiment of the third aspect.

Advantageous embodiments of the present invention can be found in the dependent claims.

In an advantageous embodiment of the present invention, it is provided that the grain device is designed as a hydraulic actuator or as a pneumatic actuator and is movable independently of the locking device

This advantageously makes it possible to provide an improved machine readable position marker.

In a further advantageous embodiment of the present invention it is provided that the additional form is formed as a bulge or as a hemisphere or a concave recess or a round recess or a serrated recess or a star-shaped recess and the Umspritzeinrichtung is adapted to the machine-readable position detection in the shape of a recess or a Hemisphere or form a concave recess.

This advantageously makes it possible to achieve an exact positioning of the additional form for the machine-readable position marking.

In a further advantageous embodiment of the present invention, it is provided that the additional form is formed with a different surface finish compared to a surface finish of the base mold.

This advantageously makes it possible to provide an improved machine readable position marker.

The described embodiments and developments can be combined with each other as desired.

Further possible refinements, developments and implementations of the present invention also include combinations of previously or subsequently described embodiments of the present invention which are not explicitly mentioned.

The accompanying drawings are intended to provide further understanding of the embodiments of the present invention.

The accompanying drawings illustrate embodiments and, together with the description, serve to explain concepts of the present invention.

Other embodiments and many of the stated advantages will become apparent with reference to the figures of the drawings. The illustrated elements of the figures of the drawings are not necessarily shown to scale to each other.

list of figures

• 1: eine schematische Darstellung eines Elektronikgehäuses mit einer maschinenlesbaren Positionsmarkierung zur automatischen Bondererkennung basierend auf Bilderkennungsprozessen gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• 2: eine schematische Darstellung eines Elektronikgehäuses mit einem Körnerpunkt auf einem Bondstanzgitter gemäß einem weiteren Ausführungsbeispiel der vorliegenden Erfindung;
• 3: eine schematische Darstellung einer Spritzgussvorrichtung zum Spritzgießen eines Bauteils für ein Kraftfahrzeug gemäß einem weiteren Ausführungsbeispiel der vorliegenden Erfindung;
• 4: eine schematische Darstellung einer Spritzgussvorrichtung zum Spritzgießen eines Bauteils für ein Kraftfahrzeug gemäß einem weiteren Ausführungsbeispiel der vorliegenden Erfindung; und
• 5: eine schematische Darstellung eines Flussdiagramms eines Verfahrens zum Spritzgießen eines Bauteils für ein Kraftfahrzeug gemäß einem weiteren Ausführungsbeispiel der vorliegenden Erfindung.

Show it:

• 1 FIG. 2 is a schematic illustration of an electronics housing having a machine-readable position marker for automatic bead recognition based on image recognition processes in accordance with an embodiment of the present invention; FIG.
• 2 a schematic representation of an electronics housing with a grain point on a Bondstanzgitter according to another embodiment of the present invention;
• 3 a schematic representation of an injection molding apparatus for injection molding of a component for a motor vehicle according to another embodiment of the present invention;
• 4 a schematic representation of an injection molding apparatus for injection molding of a component for a motor vehicle according to another embodiment of the present invention; and
• 5 : A schematic representation of a flowchart of a method for injection molding of a component for a motor vehicle according to another exemplary embodiment of the present invention.

Detailed description of the embodiments

In the figures of the drawings, like reference characters designate like or functionally identical elements, components, components or method steps, unless indicated otherwise.

The motor vehicle or vehicle is, for example, a motor vehicle or a hybrid vehicle, for example a hybrid vehicle with a sailing function, for example a motorcycle, a bus or a truck or a bicycle.

The 1 shows a schematic representation of an electronics housing with a machine-readable position marker for automatic Bondererkennung based on image recognition processes according to an embodiment of the present invention.

The 1 shows an electronics housing with a plurality of machine-readable position marking or image recognition points BKP1, ..., BKPn and a bonding surface BF1. The electronics housing is a component 100 for a motor vehicle.

The 2 shows a schematic representation of an electronics housing with a grain point on a Bondstanzgitter according to another embodiment of the present invention.

The 2 shows in the left part of an electronics housing with a machine-readable position marker or image recognition points BKP1 and a bonding surface BF1.

The 2 shows in the right part a schematic sketch of a component 100 , Along the line BB, a sectional image is shown in the middle part of the figure. The recess or recess of the image recognition point BKP1 is shown in the sectional view.

In addition, a surface property of the image recognition point BKP1 can be compared to the surface of the component 100 be modified so that the optical properties of the image recognition point BKP1 are different compared to its environment.

The 3 shows a schematic representation of an injection molding apparatus for injection molding a component for a motor vehicle according to another embodiment of the present invention.

An injection molding device 1 for injection molding a component 100 for a motor vehicle comprises: a basic shape 10 , a locking device 20 , a grain facility 30 , and an overmolding device 40 ,

The basic form 10 is designed to form a negative of an outer shape for the component to be produced.

The locking device 20 is designed to have a stamped grid with respect to the base mold 10 to lock for an extrusion process.

The grain device 30 is adapted to approach after locking the stamped grid an additional form to a predetermined position of the component to be produced.

The overmolding device 40 is designed to overmold the locked stamped grid for the manufacture of the component and to that of the grain device 30 approached position form a machine-readable position detection.

The 4 shows a schematic representation of an injection molding apparatus for injection molding a component for a motor vehicle according to another embodiment of the present invention.

The locking device 20 at the in the 4 illustrated embodiment includes a hold-down and a side holder.

The grain device 30 is moved to the component to produce the image recognition point.

The 5 a schematic representation of a flowchart of a method for injection molding of a component for a motor vehicle according to another embodiment of the present invention.

• Als ein erster Schritt des Verfahrens erfolgt ein Bereitstellen S1 von einer Basisform 10, welche ein Negativ einer Außenform für das herzustellende Bauteil formt.
• Als ein zweiter Schritt des Verfahrens erfolgt ein Arretieren S2 eines Stanzgitters in Bezug auf die Basisform 10 für einen Umspritzprozess mittels einer Arretierungseinrichtung.
• Als ein dritter Schritt des Verfahrens erfolgt ein Anfahren S3, nach dem Arretieren S2 des Stanzgitters, einer Zusatzform an eine vorbestimmte Position des herzustellenden Bauteils mittels einer Körnereinrichtung 30.
• Als ein vierter Schritt des Verfahrens erfolgt ein Umspritzen S4 des arretierten Stanzgitters für die Herstellung des Bauteils und Ausbilden einer maschinenlesbaren Positionserkennung an der von der Körnereinrichtung angefahrenen Position mittels einer Umspritzeinrichtung 40.

The method comprises the following method steps:

• As a first step of the method, provision S1 of a basic form takes place 10 which forms a negative of an outer mold for the component to be manufactured.
• As a second step of the method, there is a locking S2 of a stamped grid with respect to the base mold 10 for a molding process by means of a locking device.
• As a third step of the method, a starting S3, after the locking S2 of the stamped grid, an additional form to a predetermined position of the component to be produced by means of a grain device 30 ,
• As a fourth step of the method, encapsulation S4 of the locked stamped grid for the production of the component takes place and forming a machine-readable position recognition at the position approached by the grain device by means of an encapsulation device 40 ,

Although the present invention has been described above with reference to preferred embodiments, it is not limited thereto but is modifiable in a variety of ways. In particular, the invention can be varied or modified in many ways without deviating from the gist of the invention.

In addition, it should be noted that "comprising" and "having" does not exclude other elements or steps, and "a" or "an" does not exclude a plurality.

It should also be appreciated that features or steps described with reference to any of the above embodiments may also be used in combination with other features or steps of other embodiments described above. Reference signs in the claims are not to be considered as limiting.

Claims (8)

An injection molding apparatus (1) for injection molding a component (100) for a motor vehicle, the injection molding apparatus (1) comprising: - a base mold (10) adapted to form a negative of an outer mold for the component to be manufactured; - A locking device (20) which is adapted to lock a stamped grid with respect to the base mold (10) for a Umspritzprozess; - A grain device (30) which is adapted to approach after locking the stamped grid an additional form to a predetermined position of the component to be produced; and - an overmolding device (40), which is designed to lock the locked stamped grid for production to overmold the component and to form a machine-readable position recognition at the position approached by the grain device (30). Injection molding device according to Claim 1 wherein the grain device (20) is designed as a hydraulic actuator or as a pneumatic actuator and is independent of the locking device (10) movable. Injection molding device according to Claim 1 or 2 wherein the auxiliary form is formed as a bulge or as a hemisphere or as a convex bulge and the Umspritzeinrichtung (30) is adapted to the machine-readable position detection in the form of a recess or a hemisphere or a concave recess or a round recess or a serrated Form recess or a star-shaped recess. Injection molding apparatus according to one of the preceding Claims 1 to 3 , wherein the additional form is formed with a different surface texture compared to a surface finish of the base mold (10). Method for injection molding a component (100) for a motor vehicle, the method comprising the following method steps: - Providing (S1) of a base mold (10) which forms a negative of an outer mold for the component to be produced by means of a base mold (10); - Locking (S2) of a stamped grid with respect to the base mold (10) for an overmolding process by means of a locking device (20); - Starting (S3), after locking (S2) of the stamped grid of an additional mold to a predetermined position of the component to be produced by means of a grain device (30); and - Overmolding (S4) of the locked stamped grid for the production of the component and forming a machine-readable position detection at the approached by the grain device position by means of a Umspritzeinrichtung (40). Method according to Claim 5 , wherein the additional form is formed with a different surface texture compared to a surface finish of the base mold (10). Component (100) for a motor vehicle producible by a method for injection molding of a component (100) according to one of Claims 5 and 6 , Motor vehicle comprising a component according to Claim 7 ,

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