Method and apparatus for manufacturing a plurality of components with at least one electrical feedthrough and an information storage element, component as well as method and apparatus for further processing of such components

Abstract

A method for manufacturing a plurality of components with at least one electrical feedthrough, wherein a functional element is fixed in a feedthrough opening of a base body by means of an electrically insulating material, wherein information is recorded in relation to each of the components, characterized in that in one of the manufacturing steps of the method each component or one of the precursors of each component is provided with an information storage device, wherein the information is stored in the information storage device and / or an identifier is stored in the information storage device and the information is stored in a database in relation to this identifier, wherein each component or one of the precursors of each component is uniquely identified in at least one manufacturing step by its position in a component carrier and by a component carrier identifier.which is assigned to the component carrier and uniquely identifies it.

Description

[0001] The invention relates to methods for producing a plurality of components with at least one electrical feedthrough, in which a functional element is fixed in a feedthrough opening of a base body by means of an electrically insulating material, wherein information associated with each of the components is recorded. Further aspects of the invention relate to such a component, assemblies of several such components, devices for producing such components, methods and devices for further processing such components, and the use of the components in an ignition unit for airbags or an igniter for belt tensioners.

[0002] Although the present invention is generally applicable to any components, the present invention is explained with reference to components in the form of feedthrough elements of igniters for airbags and / or belt pretensioners in passenger restraint systems.

[0003] Occupant restraint systems are used in a wide variety of ways in vehicles on land, at sea, in space, or in the air, especially in motor vehicles. For example, belt pretensioners exert tension on the seat belt of a respective occupant of the vehicle, increasing the restraining force on the occupant. Tension is exerted on a seat belt, for example, by means of a piston driven by the gas pressure generated by a gas generator.

[0004] Another occupant restraint system is airbag systems, which use at least one rapidly inflated airbag to protect the vehicle's occupants in the event of a side or frontal collision. These occupant restraint systems, designed as airbag systems, use airbags to prevent the vehicle's occupants from impacting the vehicle's rigid structure.

[0005] Such airbag systems often feature an ignition unit and a solid propellant. When the solid propellant is ignited, hot gas is released, which flows through a filter into the airbag and inflates it. Airbag systems have also been described that use an ignition unit to trigger an explosive device and destroy a membrane between a pressurized gas reservoir and the airbag being deployed, causing it to inflate.

[0006] The ignition units comprise, for example, as disclosed in EP 1 455 160 A1, a feedthrough element with a base body for a primer capsule consisting of a circular disk made of weldable material with a top side and a bottom side and with at least one through-opening for a glass insulation, wherein the at least one through-opening is designed as an elongated hole on the top side and ends in a circular shape on the bottom side. A contact pin is held in the through-opening in an electrically insulating fixing material. The fixing material is typically a glassy or glass-ceramic material in which the contact pin is fused. Plastic fixing materials have also been described.

[0007] The electrical feedthrough, formed by the through-hole, the glass insulation, and the contact pin, is subject to stringent requirements, particularly when used in an ignition unit. When the ignition unit is ignited, it must be ensured that the contact pins are not pushed out of the through-hole. Furthermore, the electrical feedthrough must prevent moisture from the environment from penetrating the ignition unit, so the electrical feedthrough is preferably hermetically sealed.

[0008] Such bushings for ignition units are manufactured in some production steps in prefabricated component carriers, for example, for 100 units or more. A batch of corresponding bushings for ignition units can comprise several tens of thousands of units, for example 80,000 units. Before the manufactured bushings are shipped to the manufacturer of the ignition units, they are subjected to a random or 100% outgoing inspection for quality assurance purposes. At the manufacturer of the ignition units themselves, the received bushings are subjected to a thorough incoming inspection to ensure that they comply with the respective specifications agreed upon with the manufacturer of the ignition units. This requires considerable effort from the manufacturer of the ignition units.

[0009] In order to reduce the effort, it has become known to also only carry out incoming goods inspections on a random basis. However, this means that the accuracy of the check to determine whether the ignition unit bushings meet the agreed specification or not is significantly reduced due to the large number of bushings even in a single batch. In addition, a single bushing identified as defective can lead to an entire batch being rejected as defective. If the respective batch number is communicated to the manufacturer of the ignition units, the manufacturer has only extremely limited, if any, ability to determine what led to defective production of the tested ignition unit and to determine whether and, if so, to what extent other ignition units in the respective batch are also defective.Furthermore, the further processing of the ignition units is significantly hampered, since if a single defective ignition unit in a batch is detected, the entire batch must be tested or inspected, or a new batch must be used. The results of the inspection can be used to sort out or inspect batches at the manufacturer.

[0010] DE 20 2010 008564 U1 discloses a plastic injection-molded component with an embedded RFID data carrier. This data carrier can, in particular, store recorded process data, which is important for quality monitoring. This is intended to support the determination of the causes of component failure, for example, to identify correlations between process data and errors that have occurred. Furthermore, batch numbers of materials or markings of the tools and machines used can also be recorded. Document DE 20 2010 008564 U1 also describes a device for producing such components, in which existing process data is written to the RFID data carrier via a data transfer device.

[0011] DE 10 2008 046812 A1 discloses containers and methods for labeling multiple components or groups of components. This method provides for all components to have a storage device and to be configured to communicate with one another. In the method, a first component that has already been labeled contacts second components in the vicinity and requests them to label themselves via a signal. To assign individual labels, either the first component can assign identifiers, or the second components can communicate with one another to avoid identical labels. In one variant of the method, a selected component can store the identifiers of all other components, so that the entire group can be queried by querying this one component.

[0012] DE 10 2015 006512 A1 describes a method for manufacturing spare parts for packaging machines. The individual components of the machine each have identification data, which is stored, for example, on an electronic memory assigned to the component (RFID or NFC chip) or arranged on the component, for example in the form of a 2D code, a barcode, or an alphanumeric marking. The identification data can be captured, for example, using a reading device such as a barcode scanner. The identification data can then be used to provide a 3D printer with the correct production data to manufacture the respective spare part.

[0013] US 2021 / 0039420 A1 describes a method for encoding information on an object and a verification method for such an encoded object. For example, concentric rings can be engraved into a substrate, with the number and position of the rings encoding the information. The method can also be combined with other information storage devices, such as a QR code, in which case the rings can serve as an indicator to indicate the location of the QR code.

[0014] Having said this, it is an object of the invention to provide a component to which information is assigned that is required for the assessment of quality and for traceability.

[0015] It is also an object of the invention to provide a method and a device which makes the manufacturing parameters of a component traceable during its manufacture.

[0016] A further object of the invention is to provide a method and a device that makes the information associated with a component available during the further processing of the component into units containing at least one such component. In particular, the information is used to control the further processing of the components into the units using the information associated with the components.

[0017] The invention thus relates in particular to the entire manufacturing chain, from the use of materials to the manufacture of the component to the further processing of the component into units, each containing at least one such component. The invention also relates to manufacturing processes with an outgoing inspection of the components as an intermediate product and further processing processes with an incoming inspection at a processor who further processes the components into the units that constitute the final product within the meaning of the present description. Disclosure of the invention

[0018] A method for producing a plurality of components is proposed. The components have at least one electrical feedthrough, in which a functional element is fixed in a feedthrough opening of a base body by means of an electrically insulating material. The method provides for the acquisition of information relating to a component in association with each of the components. This information is preferably selected from one or more of the following: information relating to the starting materials used, information relating to the manufacturing steps performed, information relating to the tools and equipment used, information relating to measurements, and a unique identifier.

[0019] Preferably, at least one of the information items is specific to individual components, in particular to each of the components.

[0020] Furthermore, it is provided that in one of the manufacturing steps of the method, each component or one of the precursors of each component is provided with an information memory, wherein information assigned to the component is stored in the information memory. Alternatively or additionally, a unique identifier or ID is stored in the information memory, and the further information assigned to the component is stored in a database in association with this identifier. The information memory can, for example, be embodied as an optically readable marking, in particular as a barcode or as a matrix code that encodes the identifier or ID. However, other embodiments, such as an electronic memory such as an RFID chip or a flash memory, are also conceivable.

[0021] The database is preferably implemented via a computer device, which may, for example, be a server, in particular a cloud server, which can communicate with other computer devices via a data network. The data network may be a local network that, for example, links several devices in a production facility. The data network is preferably the Internet, so that the information stored in the database can be accessed at any time from any location.

[0022] The method further provides for each component or a precursor of each component to be uniquely identified in at least one manufacturing step by its position in a component carrier, wherein the component carrier is assigned a component carrier identifier which uniquely identifies it.

[0023] The component, which is obtained in particular with the proposed method, is preferably designed and / or configured to be incorporated as a component in a unit in a further processing step, wherein the component provides at least one electrical feedthrough in this unit.

[0024] For this purpose, the component can, for example, comprise a base body that has a through-hole for each of the electrical feedthroughs. The base body is preferably made of a metal, and the through-hole can be created, for example, by punching, milling, or drilling.

[0025] A functional element is arranged in the through-hole, which can be designed, for example, as a connecting pin, in particular as a metal pin. The functional element is fixed in the through-hole with an electrically insulating material. The electrically insulating material is preferably glass, a glass ceramic, or a ceramic. However, the use of other electrically insulating materials, such as a plastic, or mixtures of several insulating materials, such as a mixture of a glass and a plastic, is also conceivable.

[0026] By surrounding and securing the functional element in the through-hole with the electrically insulating material, the through-hole is closed and thus sealed. This seal is preferably hermetically sealed, in particular to prevent the penetration of moisture through the electrical feedthrough. Hermetically sealed is understood to mean an electrical feedthrough with a helium leakage rate of less than 1 10 -5 mbar·l / sec and preferably in the range 1·10 -10 mbar·l / sec to 1·10 -6 mbar·l / sec. The helium leak rate is preferably measured according to DIN EN60068-2-17 or MIL-STD-883-method 1014.9 condition A4.

[0027] In the method, each component or a precursor of each component is uniquely identified in at least one manufacturing step by its position in a component carrier. The component carrier is preferably assigned a component carrier identifier that uniquely identifies it. This component carrier identifier is stored, for example, in an information memory arranged on the component. Accordingly, it is preferred to identify the components or their precursors in the manufacturing step of the method by reading the information memory of the component carrier and the position in the component carrier. The information memory of the component carrier can be embodied, for example, as an RFID chip or as an optically readable marking, in particular as a barcode or as a matrix code that encodes the component carrier identifier.

[0028] The component carrier can, for example, be a mold that accommodates multiple components or their precursors, e.g., for sintering glass blanks or for glazing in a furnace after the metal pins have been installed. The component carrier can be any type of holder used to handle the component or its precursors during the manufacturing process.

[0029] Preferably, each component or a precursor of each component is uniquely identified in at least one manufacturing step of the method by reading the information memory of the component.

[0030] An embodiment of the method can, for example, comprise the provision of a starting material for the base body as one step. In a subsequent step, the base body is shaped, for example using punching, embossing, milling, drilling, and the like, wherein at least one through-opening is formed in the base body. In particular, it is provided that after the base body has been separated from a starting material, for example after punching from a sheet metal or separating from a bar stock, each base body is individually tracked. Since no information storage device is connected to the base body at this time, tracking is carried out via the position of the respective base body in the processing device, for example by placing the base body in a predetermined position on a component carrier after it has been separated from the starting material.Accordingly, information such as the respective starting material used, the tool used to create the base body, and / or the time of production can be assigned to this specific base body as the starting product for the subsequent component. As an alternative to individual tracking of each base body, tracking of a batch of base bodies can also be carried out at this point in the process, with the same information being assigned to the entire batch of base bodies.

[0031] The method also includes providing the electrically insulating material. The electrically insulating material can be provided, for example, in the form of a powder, which is formed into a blank for insertion into the through-opening of the base body, for example by sintering. This blank can again be individually tracked after forming by tracking its position in the processing device, for example by tracking the position of the blank in a carrier. Information such as the respective starting material used, the tool used to form the blank, and / or the time of production can be assigned to the respective blank as the starting product for the subsequent component.As an alternative to individual tracking of each blank, at this stage of the process, tracking of a batch of blanks can also be carried out, whereby the same information is assigned to the entire batch of blanks.

[0032] The method further comprises providing a functional element, for example in the form of a connecting pin, in particular a metal pin. The metal pin can be obtained, for example, by cutting it from a starting material provided in the form of a wire. After cutting it, the metal pin can be individually tracked by tracking the position of the metal pin in the processing device, for example by tracking the position of the metal pin in a carrier. Information such as the respective starting material used, the tool used to obtain the metal pin, and / or the time of manufacture can be assigned to the respective metal pin as the starting product for the subsequent component.As an alternative to individual tracking of each metal pin, at this stage of the process, tracking of a batch of metal pins can also be carried out, whereby the same information is assigned to the entire batch of metal pins.

[0033] The preparation steps, which can be performed in parallel or sequentially in any order, are followed by an assembly step. In this assembly step, a metal pin and a blank are inserted into a through-hole in the base body. The assembly step is followed by a melting step, in which the blank is melted, creating the hermetically sealed electrical feedthrough.

[0034] The assembly step and the melting step are carried out using a component carrier that has clearly identifiable receptacles for the components to be manufactured. The component carrier is designed, for example, as a graphite mold, with each of the receptacles being formed as a recess in the graphite mold or carbon mold. In the assembly step, a graphite mold, for example, is provided as a clearly identifiable component carrier. Subsequently, a base body is inserted into each of the receptacles of the graphite mold, and a blank and a metal pin are inserted into each through-opening of the base body.In this process, each image of the graphite mold, which can be clearly identified, is assigned the information associated with the precursors used in the component, so that, for example, the materials, tools and manufacturing times used for the base body, the blank and the metal pin can also be tracked in connection with each image of the graphite mold.

[0035] The thus-equipped graphite mold is then placed in a furnace for the melting step, where it remains for a specified time at a specified temperature to produce the finished electrical feedthrough. The parameters for the melting step are then assigned to the graphite mold as the component carrier and thus to all components housed in this component carrier.

[0036] The melting step is preferably followed by a control step in which all manufactured components, or at least a sample of them, are measured. The results of this measurement are preferably assigned to these components as additional information.

[0037] The manufacturing process may include additional manufacturing steps. For example, a coating step may involve coating surfaces, such as certain precursors of the component, such as the base body and the terminal pins. For this purpose, a pretreatment step may be provided in preparation, in which the surfaces to be coated are cleaned and / or pickled.

[0038] Before the components are dispensed, the proposed method provides for arranging an information storage device on the component or on a precursor of the component. This arranging of the information storage device can occur at various times during the manufacturing process. An information storage device arranged on the base body can be arranged on the base body at any time after the base body has been provided. Similarly, an information storage device arranged on a metal pin can be arranged on the metal pin at any time after the metal pin has been provided.

[0039] After the information storage device has been arranged, it can be read out to uniquely identify a component or a precursor of the component. For this purpose, it is preferably provided that the information storage device contains a unique identifier as information.

[0040] The information obtained during the individual manufacturing steps of the process in association with the component or its precursors is preferably stored in a database and linked to the respective component via the identifier stored in the information store. In particular, it can be provided that this information associated with the component is continuously updated, for example, after each or selected steps of the manufacturing process. These steps can include, in particular, processing steps and inspection steps.

[0041] Preferably, the manufacturing process includes a final inspection, to which a sample of the components or each component is subjected, during which at least one property of the component is measured, and the results of this final inspection are assigned to the component as information. Such a final inspection is particularly advantageous in the production of safety-relevant components, such as bushings for ignition units for airbags and / or seat belt pretensioners.

[0042] The properties of the component can include, for example, geometric properties such as its dimensions. Furthermore, properties such as the insulation resistance between the functional element and the base body and the tightness of the electrical feedthrough can be checked during the final inspection. It is also conceivable to test a sample of the components for the extrusion force of the electrical feedthrough.

[0043] Preferably, the results obtained during the final inspection are compared with specified target values, and components that exceed specified limits at least once are preferentially identified. This allows components that do not meet specified requirements to be identified. These identified components can be discarded, reworked if possible, or classified into a lower quality class if necessary.

[0044] If components are subjected to rework, information is preferably recorded and assigned to the component. This information can include, in particular, details of the materials, tools, and equipment used, as well as the individual steps applied during rework. The information repository or an associated database entry can then be supplemented accordingly.

[0045] The dispensing of the components can include a packaging step in which an entirety of components or a batch of components is received and packaged in a carrier such as an outer packaging. This outer packaging can be provided with an ensemble information store, which can contain information about the outer packaging itself as well as about the individual components contained therein. For example, a batch number or the unique identifiers of the components contained therein can be stored in the ensemble information store. However, it is also conceivable, for example, to store the unique identifiers of the components contained in the outer packaging in a database and link them to an identifier of the outer packaging, which is then stored in the ensemble information store.

[0046] Preferably, the method provides at least one step in which the information associated with the identified components with at least one limit value violation is evaluated and common information is determined for the identified components, which information is identical for the identified components or agrees up to a predetermined tolerance.

[0047] In this step, commonalities between the components and the identified deviations are identified. For example, it could be determined that all components that were recorded in a specific mold, machined with a specific tool, treated in a specific furnace, or processed by a specific operator do not meet the requirements and therefore exceed or fall below a specified limit for at least one property. Identifying such commonalities is particularly helpful for identifying the causes of non-compliance with the limit values.

[0048] The evaluation of information from the identified components with at least one limit violation can be carried out using machine learning methods or artificial intelligence, for example. This can be used to identify complex correlations between specific production resources or production conditions.

[0049] The method preferably further provides for the determination of manufacturing steps, starting materials, tools, and / or process conditions common to these components from the shared information, and for the initiation of measures to improve the quality of future runs of the manufacturing steps of the method based on the result of this determination. These measures are preferably selected from the replacement of a tool, the replacement of a component carrier, the replacement or calibration of a measuring device, the correction of process parameters, the selection of other starting materials, the correlation of different manufacturing processes, and combinations of several of these measures.

[0050] For example, if the process determines that all components machined with a specific tool do not meet a specified limit, it can be concluded that the tool is worn out. As a remedy, the affected tool can then be replaced.

[0051] With the proposed method, the traceability of individual components and the assignment of specific information to these individual components can be advantageously used to continuously monitor and optimize the process for manufacturing these components. In particular, with adjustable process parameters such as the temperature and duration of the melting step, the process parameters can be optimized as in a control loop.

[0052] With this method, key parameters of the respective component can advantageously be assigned to the same component or to a group of components before production and can be stored individually for each component or group of components using the respective identifier. In particular, starting materials and / or precursors of the component can be individually tracked and later assigned to the component in which they were installed. This enables the provision of a large number of parameters relevant to the manufacture, production and further processing of each of the components, which are then easily available when troubleshooting components identified as defective. This enables faster and more efficient troubleshooting. At the same time, production can be monitored more closely and defective components can be identified and identified before delivery to the customer orProcessors can identify and sort out the components. In addition, production can be adjusted or corrected more quickly, reducing component waste and improving manufacturing quality. A further advantage is that selected data can be transmitted to the customer or processor individually for each component or group of components purchased, thus eliminating incoming inspection entirely or at least partially, thus saving time and money.

[0053] A further aspect of the invention relates to a component with at least one electrical feedthrough, in which a functional element is fixed in a feedthrough opening of a base body by means of an electrically insulating material, wherein the component comprises an information storage device. The information storage device is preferably permanently integrated into the component or inseparably connected to it.

[0054] The component is preferably obtained by one of the manufacturing methods described herein.

[0055] The invention also relates to an ensemble of such components, wherein the ensemble of components is accommodated in a container, wherein the container comprises an ensemble information memory and wherein the ensemble information memory contains information for identifying the components contained in the ensemble.

[0056] The container can be designed as a component carrier or comprise such a carrier, wherein the component carrier is designed, for example, as a plate-shaped element with a plurality of recesses for receiving one component each.

[0057] The ensemble information store can, for example, include an ensemble identifier, via which information about which components are part of the ensemble can be retrieved from a database. However, the corresponding information can also be stored directly in the ensemble information store itself. The information about the components of the ensemble can, in turn, be configured as an identifier for retrieving associated information from a database and / or can also be stored directly in the ensemble information store.

[0058] The ensemble information storage enables a recipient or processor to transfer the information of a large number of components into a data processing system, such as a computer device associated with a production facility, in a single step, without having to read the information storage of each individual component. However, since each individual component has its own information storage, the corresponding component-related information can be individually assigned to each individual component during a further processing process.

[0059] A further aspect of the invention relates to a method for further processing the described components, an ensemble of components, or components obtained via one of the methods described herein into units, each of which contains at least one of these components. It is provided that information associated with a component is obtained and assigned to one of the units. Furthermore, it is provided that obtaining the information associated with a component comprises reading out an information memory of the component or reading out an ensemble information memory of a container that accommodates one or more components.

[0060] The further processing method can be carried out directly after the manufacturing method or at any later time. Accordingly, the invention also relates to combined methods in which a component is first manufactured and then further processed into the unit. The further processing method can, in particular, be carried out at a different location by a processor who obtains the components as a precursor from a component manufacturer.

[0061] In the method for further processing, at least one parameter is preferably adapted in at least one further processing step based on information assigned to the component.

[0062] For example, geometric parameters of a component can be recorded by reading the information memory of the respective component and dependent process parameters can be taken into account during further processing of the component into the unit.

[0063] A parameter contained in the information associated with the component can be measured again during the further processing procedure and compared with the corresponding information obtained via the information memory associated with the component.

[0064] Preferably, the comparison is repeated for several components which are a sample from a set of components, or the comparison is repeated for all components of the set, whereby if a systematic deviation is detected, a correction factor is determined with which associated information is also corrected for components of this set which have not been measured again.

[0065] The totality of the components may in particular be the components of a batch or the components of an ensemble.

[0066] This repeated measurement of parameters of a component and comparison with the corresponding information previously assigned to this component makes it possible, for example, to recognize different calibrations of measuring equipment and to take them into account using a correction factor, so that after an appropriate correction, the information stored in association with the individual components can be used to control the process for further processing without having to re-measure the corresponding parameters for each individual component.

[0067] Furthermore, the repeated measurement of parameters of a component and comparison with the corresponding information previously assigned to this component can be used by a processor of the components to monitor and document the reliability of the information previously determined and stored during the manufacture of the components for quality assurance purposes.

[0068] In the proposed method for further processing components into units, each containing at least one such component, the information memory of the individual components and / or an ensemble information memory of a container with a large number of components can be read out, particularly for the purpose of quality assurance, and can supplement or replace measurements or tests of predetermined parameters of the components as part of an incoming goods inspection. If components are identified during the incoming goods inspection which exceed or fall below predetermined limit values ​​for at least one parameter, the information assigned to the individual components can advantageously be used to identify other components which could also exceed limit values. This can be done, for example, by storing information about the components with limit value violations orLimit violations can be examined for commonalities. For example, if it is discovered that all components manufactured using a specific tool do not meet a specified limit, only those components need to be discarded, and other components from the same set can be used for further processing. Furthermore, this knowledge can be used to optimize the production of other components.

[0069] The arrangement of an information memory on the component facilitates the clear assignment of defect patterns identified during further processing to specific conditions or means used in the component manufacture. Since tracking can begin in the component manufacturing process as early as the respective starting materials and precursors, specific defect patterns can even be assigned to individual precursors and starting materials of the components. Through this assignment, a further processor of the components can provide feedback to the component manufacturer, for example, to optimize the manufacturing process and / or to reject or rework further components with limit violations before delivery. This assignment is particularly possible when components from different batches have been mixed, since each component is individually provided with an information memory.

[0070] These advantages can also be realized if the manufacture of the components and their further processing into units take place spatially, temporally and / or organizationally separately. In particular, the manufacture of the components and their further processing into units can take place in different production facilities. In this case, the further processor of the components can be organizationally independent of the manufacturer of the components. If the information storage of the components does not contain the assigned information directly, but stores an identifier for retrieving the information from a database, the manufacturer of the components can, for example, provide the database, whereby the further processor of the components is given access to the database via a data network such as the Internet.It may be possible to restrict access rights so that the processor only has read access and / or is only allowed to retrieve selected information about a component.

[0071] Analogous to the procedure used for manufacturing components, the processor can also record information assigned to individual units during further processing into a unit and store it with a clear assignment to a unit. Again, the storage can take place, for example, in an information storage device arranged on the unit, or an information storage device arranged on the unit contains a unique identifier that enables access to a data set stored in a database with the assigned information. If an information storage device for a component installed in the unit is still accessible after further processing, it can be reused for this purpose and, for example, make the entire unit traceable. Otherwise, another information storage device can be arranged on the unit.

[0072] Preferably, it is provided to record information relating to the starting materials used and / or the manufacturing steps carried out and / or details of the tools and equipment used and / or details and results of measurements, in particular of a measurement carried out after a manufacturing step, and / or a unique identifier assigned to each of the components.

[0073] The unique identifier can be used, on the one hand, to uniquely identify the respective component. If not all information associated with the component is stored in the information storage itself, but rather in a database, the unique identifier can also be used to access the information associated with the component in a database.

[0074] Information on the raw materials used can be recorded for individual or all raw materials used. Examples of material data include, in particular, information - the type of material used, - to the manufacturer, - to the supplier, - on the delivery date, - to the batch, and - on the manufacturing parameters of the material.

[0075] Information concerning manufacturing steps can be recorded for individual or for all manufacturing steps carried out. This information can include, in particular, an indication of the type of manufacturing step carried out and / or information on the parameters used in the manufacturing step. Examples of information concerning the manufacturing steps carried out include, in particular, information - the position of the component or a precursor of the component in a carrier, - for the carrier or workpiece holder used, in particular a corresponding identification, - the parameters used, - to the operator or plant manager, and - at the time of processing.

[0076] Information on tools and equipment used can be recorded for individual tools and equipment or for all tools and equipment used in production. Examples of information concerning the tools and / or equipment used in a production step include, in particular: - an identifier for identifying the tool or equipment, such as the temperature of a furnace, - Information on the parameters used for the tool or system, and - Information on the time of processing.

[0077] Examples of information relating to measurements or inspections include in particular - Information on the type of measurement or inspection, - Information on the time of measurement or inspection or final inspection, - a measuring instrument identification or inspection system identification, - Information about the inspection system operator and - the measurement result or inspection result.

[0078] Thus, the information that can be assigned to one of the described components is in particular selected from - unique identifier, - material data, - Position of the component or a precursor of the component in a carrier, - operator or plant manager, - Time of processing in the tool and / or system, - Tool and / or equipment identification, - tool and / or system parameters, - Time of inspection, - Inspection system identification, - inspection result, - Inspection system operator, - Inspection system parameters, - measurement result, - Time of final inspection, - carrier or workpiece holder used, and combinations of several of these pieces of information.

[0079] Of course, it is also possible and conceivable to capture other information associated with the component and link it to the information store and / or store it there. In particular, it is possible to capture all information relevant for documentation purposes or for assessing the quality of the components and store it in the information store itself or in a database associated with the information store.

[0080] Preferably, information which is identical for a large number of components is stored only once as group information in a database, with a reference to this group information then being assigned to each component.

[0081] This makes it possible to reduce the amount of data to be stored by storing information relating to a set of components only once.

[0082] The group information to which the information assigned to a component refers is selected in particular from - material data, - Information on the carrier or workpiece holder used - Plant manager or operator for the group of components, - Time of group processing in system and / or tool, - Plant and / or tool identification of group processing, - Tool and / or system parameters of the group processing, and combinations of several of these group information.

[0083] The information storage of a component or the ensemble information storage of a container is preferably configured as an optically readable marking. Accordingly, it is preferred to form the information storage configured as such an optical marking on the outside of the component in such a way that it is accessible for optical reading. Alternatively or additionally, it is conceivable to configure the information storage of a component or the ensemble information storage as an electronic memory such as an RFID chip or a flash memory.

[0084] Preferably, the optically readable marking of the component is provided by a region of the component's base body in which material of the base body is removed or embossed. For easy reading of the optically readable marking, it is preferably arranged on a surface of the base body that faces outward during further processing into a unit, for example, an ignition unit for an airbag.

[0085] Alternatively or additionally, the optically readable marking can be formed on one of the functional elements, in particular on a contact pin. The optical marking can be formed, for example, as a sequence of notches.

[0086] The optically readable marking is preferably configured for easy machine reading, for example, via a reader connected to a computer device or the camera of a smartphone. The optically readable marking can be configured, for example, as a barcode or a matrix code, in particular as a data matrix code. However, it is also conceivable to implement the optically readable marking as an alphanumeric code, which can then be read using optical character recognition. The optically readable marking is preferably configured to store at least 20 characters.

[0087] The optically readable marking, for example, has dimensions of no more than 1 mm x 3.5 mm, in particular no more than 0.8 mm x 3 mm. Due to these compact dimensions, the information storage device designed as an optical marking can also be arranged on small components, thus making even these small components traceable.

[0088] The information storage device embodied as an optically readable marking can be obtained, for example, using a laser material processing method. For this purpose, a corresponding laser step can be integrated into a process for manufacturing the component. Other options for forming the optically readable marking include, in particular, embossing, in which individual dots of a code are embossed with a needle, or printing.

[0089] The ensemble information storage of a container can also be configured as an optically readable marking, for example, as a barcode or as a matrix code such as a QR code or Data Matrix Code. Alternatively or additionally, it is conceivable to implement the ensemble information storage as an RFID chip or as a flash memory, for example, in the form of a USB stick accommodated in the container. Particularly when implemented as a flash memory, the ensemble information storage can contain not only an identifier that identifies the container or ensemble, but also all information associated with the components of the ensemble.

[0090] A further aspect of the invention relates to a device for producing the components described herein, comprising at least one electrical feedthrough, in which a functional element is fixed in a feedthrough opening of a base body by means of an electrically insulating material. The device comprises at least one processing means for providing the components with an information storage device. Furthermore, the device is preferably designed to carry out one of the methods described herein for producing the components. For this purpose, the device for producing the components can, in particular, comprise a control unit with a programmable computer device, which implements the corresponding steps of the production method by executing a corresponding computer program.

[0091] If the information storage of the components to be manufactured is designed as an optically readable marking, the processing means are preferably designed as a laser system for removing material.

[0092] The manufacturing device can additionally comprise reading means for reading the information storage, once arranged, again during one or more steps. If the information storage is designed as an optically readable marking, the reading means are preferably designed as an optical camera or laser scanner. The corresponding reading means is preferably connected to a control unit of the manufacturing device, so that the information contained in the information storage of a component is available in subsequent process steps.

[0093] If information about the component is stored in a database which is kept on a spatially separate computer device, the control unit preferably has a communication unit for connection to a data network, such as a local network or the Internet, in order to be able to access the database.

[0094] A further aspect of the invention relates to a device for further processing the components described herein or an ensemble of these components or components obtained using one of the methods described herein into units which each contain at least one of these components. Provision is made for the device to comprise reading means for reading the information memory of the components or the ensemble information memory of a container containing the components. Furthermore, the device is preferably designed to carry out one of the methods for further processing described herein. For this purpose, the device for further processing can in particular comprise a control unit with a programmable computer device which implements the corresponding steps of the further processing method by executing a corresponding computer program.

[0095] If the information storage device is configured as an optically readable marking, the reading means are preferably configured as an optical camera or laser scanner. The corresponding reading means is preferably connected to a control unit of the device for further processing, so that the information contained in the information storage device of a component is available for further processing. If information about the component is stored in a database maintained on a spatially separate computer device, the control unit preferably has a communication unit for connecting to a data network, such as a local area network or the Internet, in order to access the database.

[0096] The invention also provides a system with which information assigned to a component can be made accessible to a further processor. The system comprises a computer device and a connected reading device for reading the information storage of the component. The system is preferably configured to read at least one piece of information relating to a measurable property of the component from the information storage.

[0097] Alternatively or additionally, the system is configured to read out a unique identifier encoded in the information memory of the component or, using the unique identifier, to retrieve at least one piece of information relating to a measurable property of the component from a database using the unique identifier. The database can be stored in the computer device of the system or maintained on a server. In this case, the system preferably has means of communication for communicating with the server. The means of communication are configured, in particular, for a connection to a data network such as the Internet. The proposed system can thus be used spatially separate from the location of the database.

[0098] The system can have measuring means for measuring the measurable property of the component. Furthermore, the system can include comparison means for comparing this measurement with the information obtained using the information storage device. Target values ​​or limit values ​​can be specified for the comparison, so that the comparison means can determine, in particular, whether a component complies with the specified target values ​​or limit values. Thus, the proposed system is particularly suitable for conducting quality control of components. For this purpose, the proposed system can be installed, for example, at a component processor and used for incoming component inspection.

[0099] The described component or the component obtained by one of the described methods is preferably used in an ignition unit for airbags or an igniter for belt tensioners.

[0100] For use in airbag ignition units, a base body of the component preferably has a thickness between 1 mm and 5 mm, preferably 2 mm to 4.2 mm. The through-opening for receiving a metal pin as a functional element preferably has a circular or oval cross-section, with the diameter of the metal pin being, for example, 0.8 to 1.2 mm and the diameter of the through-opening being, for example, in the range of 1.6 mm to 3.0 mm.

[0101] Tolerances are preferably defined for the component or its preliminary stages, which can be checked in an inspection step. For example, in the case of an ignition unit for airbags, the permissible tolerance for the diameter of the base body can be specified in the range of + / -0.02 mm - + / -0.04 mm. During an inspection step, actual tolerances can then be recorded and assigned to the component. The result of the inspection can then be assigned to the component as information. Furthermore, components can be classified into different quality classes. For certain dimensions, the tolerance field can be assigned to specific tools, and if permissible tolerances are exceeded, a targeted correction can be made, for example, by replacing the tool.

[0102] This procedure can be carried out for a variety of dimensions and other measurable parameters on the component.

[0103] It is understood that the features mentioned above and those to be explained below can be used not only in the combination specified in each case, but also in other combinations or on their own, without departing from the scope of the present invention.

[0104] Preferred embodiments and embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description, wherein the same reference numerals refer to the same or similar or functionally identical components or elements.

[0105] In schematic form Fig. 1 Steps of a method for manufacturing components according to an embodiment of the present invention; Fig. 2 steps of a method for further processing according to an embodiment of the present invention; Fig. 3 steps of a method according to an embodiment of the present invention; Fig. 4 steps of a method according to an embodiment of the present invention; and Fig. 5a, Fig. 5b and Fig. 5c Embodiments of components with an information memory according to the present invention.

[0106] Fig. 1 shows steps of an advantageous method for producing components according to an embodiment of the present invention using the example of producing a component for an igniter for passenger restraint systems in the form of airbags.

[0107] For this purpose, appropriate molds for producing a plurality of bushings for igniters are first provided, for example in the form of carbon molds, which are then provided with appropriate materials for producing bushings (step S1: assembly). Each of the carbon molds has a plurality of receptacles, with a bushing being able to be mounted in each receptacle. Accordingly, step S1 in this example involves mounting a base body, also called a header, a blank for the electrically insulating material, and a terminal pin in each of the receptacles.

[0108] For the assembly step S1, a carbon mold is provided as a component carrier, whereby the carbon mold used is identified by a component carrier identifier. The component carrier identifier is stored, for example, in an information storage device arranged on the carbon mold, for example an optically readable marking. The optically readable marking is embodied, for example, as a data matrix code. Since the later melting step S2 is carried out at elevated temperatures, the matrix code on the respective carbon mold is preferably designed to be resistant to the thermal stresses that occur during this process. New carbon molds are provided in a step V1, provided with an information storage device, and registered. Carbon molds that have already been used can be recycled and are identified by the existing information storage device or the component carrier identifier stored therein. In the flow chart of the Fig. 1, the flow of coal forms is indicated by arrowed lines of medium thickness.

[0109] As part of the process, additional information about the coal mold can be stored in the coal mold's information storage or in an associated database. This information can include, for example, the type of coal mold, information about the material, the number of previous uses, and so on.

[0110] Information regarding the precursors of the header to be manufactured is already assigned to the header to be manufactured in assembly step S1, whereby the respective header or its precursor is identified via the corresponding recording of the carbon mold and its component carrier identification. In step S1, the information is selected, for example, from details of the assembly team, the batch number of the raw materials or precursors used for the headers, metals used for the precursors of the components, in particular manufacturer, batch and type, geometry of the header or precursors, the time of assembly and parameters for the assembly. This data is stored, for example, in data records of the respective header in a database DB (see Fig. 2) deposited.

[0111] After the assembly step S1, the electrical feedthroughs are produced in a melting step S2 in a furnace, where the information relevant for the melting step S2 is assigned to the individual components or their precursors. In the flow chart of the Fig. 1 the flow of components is marked by thick arrows.

[0112] As long as the headers or their precursors do not yet have an information storage device, they are uniquely identified and tracked via the respective carbon form and their position within this carbon form, which serves as a first information carrier T1 in the process. For this purpose, in the example of the manufacturing process shown, the information storage of the carbon forms is read out and the component carrier identifier stored therein is read. The process parameters used for the melting step, such as a furnace identifier, time of execution, temperature, duration, position of the carbon form in the furnace, and / or furnace operator, are then assigned to all headers or their precursors recorded in the respective carbon form.

[0113] After melting in step S2, the components are removed from their previous component carriers and repackaged for transport to the next production step. For this purpose, the components, in this case the header, are separated / disassembled, and in step S3 they are filled into a transport container for further transport to the next production step. In the present example, the transport container, as the new component carrier, is also provided with an information storage device and serves as a second information carrier T2. The information storage device, in particular, again contains an individual component carrier identifier for the transport container. In addition, the data that was applied to the carbon mold, or similar data, can be stored in the information storage device itself or in an associated database.The information storage of the transport container can be implemented, for example, in the form of a label with an optically readable marking, an RFID tag, or the like. Information concerning the respective igniters can be represented by a data record in a database and linked to the respective ID code of the transport container. Likewise, data such as the time of dismantling, dismantling team, position of the header in the coal mold, condition parameters of the coal mold, in particular its oxidation level, header identifier, or the like can then be stored in the respective data records of the respective headers in the database.

[0114] Using the component carrier identifier and information about which component is located at which position in the component carrier, the component or its precursor can be tracked even after repackaging. However, it is preferably provided that the headers or their precursors are provided with an individual information storage device after the melting step S2 and before separation and repackaging according to step S3. In this example, the information storage device of the igniters is implemented as an optically readable marking in the form of a data matrix code, which encodes an individual identifier for the corresponding header.

[0115] The marking of the headers for applying the information storage, which is designed as a data matrix code, is carried out primarily by laser engraving, preferably directly after the melting process, since the base bodies or headers of the igniters are individually and aligned in the carbon molds. The optically readable marking with the individual ID code or the unique identifier on the respective header is resistant to the chemicals used in subsequent processing steps and has a specific surface area, e.g., 1.5 mm x 5 mm, preferably 0.8 mm x 3 mm.

[0116] Using the transport container as a carrier for the components, which is itself labeled and serves as a second information carrier T2, thus enabling identification, the separated headers are then transported further and then pickled in a further step S4 and gold-plated in a further step S5. Although the individual components already have an individual information memory that enables unique identification, reading a single information memory of the transport container before executing the next step S4 is preferred here, since in this case only a single information memory needs to be read in order to assign relevant information for the executed step, in this case step S4, to all components contained in the transport container at once.

[0117] During cleaning in step S4, drums are used whose respective numbers serve as identification or information carriers for the processed components during this production step (reference symbol T3) and are noted during further processing. Likewise, corresponding parameters of the “cleaning” process step can be noted, for example the start and end times of cleaning, cleaning line, cleaning drum, system operator and system parameters. During gilding in step S5, corresponding parameters of the “gilding” process step can also be noted, i.e. stored accordingly in the igniter’s data record in the database, for example the start and end times of gilding, gilding line, system operator and system parameters. Here again, a labeled transport container for transport between the corresponding pickling and gilding device serves as the fourth information carrier T4.During step S5, the ID code applied to the respective header serves as the fifth information carrier T5.

[0118] After step S5 – gold plating – the components – in this case, the gold-plated headers – are transported to grinding using a transport container. The transport container is again individually labeled and serves as a sixth information carrier T6. This label can then be assigned to the data records of the respective headers in a database based on the ID code of the respective components.

[0119] In a further optional step S6, the headers are now ground. In a step V2, newly provided grinding mounts as component carriers are provided with an information memory, which in turn contains a unique identifier for the respective grinding mount. The information memory is, for example, again implemented as an optically readable marking in the form of a data matrix code. Before a new or recycled grinding mount is used for the grinding step S6, its identifier is read out by reading the information memory. The flow of the grinding mounts is shown in the flow chart of the Fig. 1 marked by thin lines with arrows.

[0120] As long as the headers or their precursors are located in a grinding holder, this can serve as an information carrier T7, whereby the individual headers are identified via the identification of the grinding holder and their position within the grinding holder.

[0121] Data relating to the respective grinding tool can then be stored in a database in association with this identifier, and also in the respective header data records processed in the respective grinding tool in the database DB. The information recorded in grinding step S6 in association with a component includes, for example, the time of grinding, grinding machine, grinding tool, operating team, system parameters, or the like.

[0122] After grinding S6, the ground headers are subjected to an individual inspection in a further step S7. From the time the headers are removed from the grinding holder, the information storage of the components or headers again serves as the eighth information carrier T8. During this inspection, for example, the headers are subjected to a functional test and the time of the inspection, the inspection system number, the test results of each header, system operator, and system parameters are recorded. Furthermore, the quality of the header and / or the dimensional accuracy / dimensioning can be determined. The aforementioned data and parameters can then be added back to the data record of the respectively inspected header using its unique identifier or ID code. The headers are then sorted (step S8) and subjected to a final inspection (step S9).Here, as an alternative to the inspection in step S7 or in addition to it, the quality of the header and / or its dimensional accuracy / dimensioning can be determined. Along with other data such as the time of final inspection and the inspector, this can be added to the data set of the respective inspected header based on its ID code. Optionally, picking can be carried out according to customer specifications. Packaging and shipping to a further processor then follow in a further step S10.

[0123] This enables a high level of customizable transparency of the manufacturing process for each individual header, from assembly to shipping. Corresponding data is stored individually for each header in the database and is available for process optimization, analysis, determining the causes of production errors, and similar purposes. In particular, analyzing the data from the carbon molds and / or grinding holders allows for early detection of wear, allowing the corresponding holders and molds to be replaced in a timely manner, thus reducing waste. Furthermore, correlations in the stored information can be identified, for example, using neural networks or similar tools, allowing production to be improved or optimized by adjusting material and / or process parameters.

[0124] Fig. 2 shows steps of a method for further processing components according to an embodiment of the present invention using the example of further processing headers of igniters for airbags.

[0125] In detail, the example of Fig. 2 Process steps carried out by a processor as a customer of the lighter manufacturer upon receipt of the lighters.

[0126] In a first step K1, an incoming goods inspection is carried out. This involves scanning a control group of headers to read the data matrix code attached to them and recording the individual identifiers or ID codes of the headers. Furthermore, the individual headers are measured. Subsequently, in a further step D1, the processor creates a new data set containing data on the dimensional accuracy / dimensions of the headers in the control group. Using the individual ID codes of the headers, the processor requests the corresponding header data from the component manufacturer's database DB. Using this data, the processor carries out a comparison in step K2: It compares the measurement results obtained in step K1 with those from the header manufacturer's database DB.

[0127] The processor now has two options: The processor can decide, in step K3, that the dimensional accuracy meets its requirements based on the comparison performed in step K2. In a further step K4, it then performs further processing of all received headers. First, the processor queries the manufacturer's database DB for the corresponding detonator data based on the individual ID codes of all received headers (step D4). The processor then uses the data received from the manufacturer to control its further processing.

[0128] Alternatively or additionally, the processor can, based on the comparison in step K2, determine an individual correction factor for each header or an average correction factor for a group of headers or all headers in a step K5. To do this, the processor creates a new data set (step D2) containing the corresponding deviations or the respective correction factor, generally or individually, for each header. In a further step K6, it then further processes all received headers, taking the respective or general correction factor into account. Beforehand, the processor queries the manufacturer's database DB for the corresponding header data based on the individual ID codes of all received headers (step D3).The processor then uses the data received from the manufacturer together with its own data sets received from steps D1 and D2 to control its further processing.

[0129] Furthermore, the processor can use the component identifiers to track these components in the received units. For this purpose, for example, a new data set can be created for each individual unit, into which the data recorded by the component manufacturer for this component is copied. For unambiguous identification of the data sets, the unit can in turn be provided with a unique identifier, or, if the information storage located on the component is still accessible and readable after further processing, an identifier present in the component's information storage can be reused.

[0130] In this example, the processor can precisely track which igniter was installed in which unit and which properties the installed igniter has. In the event of a defect in a unit, the entire production chain can be traced back to the precursors of the component installed in the unit. This allows, in particular, by evaluating the information stored in the database, to identify additional components and the corresponding produced units that may also be affected by a quality issue, without having to discard all components or produced units of a batch from the outset.

[0131] Fig. 3 schematically shows the optimization of a method for manufacturing components using component-specific information according to an embodiment of the present invention using the example of components for use in passenger restraint systems or the like.

[0132] In a first step A1, material data of the precursors or materials provided for the production of the components are determined.

[0133] In a further step A2, at least one manufacturing process parameter for a manufacturing process for producing the components is determined.

[0134] In a further step A3, the components are manufactured using a manufacturing process with the determined process parameters.

[0135] In a further step A4, an individual identification feature is provided for each component in the form of a unique identifier.

[0136] In a further step A5, an information storage device is arranged on each of the manufactured components, wherein the provided identification feature is stored in the information storage device.

[0137] In a further step A6, the component-specific material data and the manufacturing process parameters are stored in a database of a computer device, wherein the identification feature identifies the corresponding data record in the database.

[0138] In a further step A7, a state of at least one of the manufactured components is determined, wherein the component is identified via the identification feature and the result of the determination is stored in the database in association with this component.

[0139] In a further step A8, the determined condition of the component is compared with specified target values. This involves identifying components that exceed or fall below the limit values.

[0140] In step A9, the associated information for the identified components with limit violations or under-limit violations is retrieved from the database and analyzed. Common causes for the deviations from the specified target values ​​are identified, and the results are fed back into the process as feedback, for example, in the form of changed parameters or an instruction to replace a tool or component carrier, to optimize component production.

[0141] Fig. 4 schematically shows the provision of information in a method for further processing a plurality of components.

[0142] In a first step B1, a number of components are combined into a group.

[0143] In a further step B2, each component of the group is identified based on its individual identification feature, which is read out, for example, from an information memory of the component.

[0144] In a further step B3, each identified component of the group is measured at least with regard to individual condition test information.

[0145] In a further step B4, at least the individual condition test information for the respective component is requested from the database of the component manufacturer.

[0146] In a further step B5, at least the individual condition check information for the respective component is received.

[0147] In a further step B6, deviations between at least the measured condition check information and the received condition check information are determined.

[0148] In a further step B7, one or more correction parameters are determined on the basis of the determined deviations individually for each component and in a further step B8, the respective component is further processed without or with at least partial consideration of the determined correction parameters.

[0149] The Fig. 5a, Fig. 5b and Fig. 5c each show an example of a component with an information memory according to the present invention.

[0150] In the three illustrated embodiments, the component 1 comprises a base body 10 in which an electrical feedthrough 20 is arranged. The electrical feedthrough 20 is arranged in a through-opening of the base body 10 and has a first metal pin 24, which is held by an electrically insulating material 22. In the illustrated examples, a second metal pin 40 is further electrically connected to the base body 10. The first metal pin 24 serves, for example, as a signal connection in a unit containing the component 1, and the second metal pin 40 serves, for example, as a ground connection.

[0151] According to the invention, the components 1 shown as examples each have an information storage device in the form of an optically readable marking 30.

[0152] In the first embodiment of the Fig. 5a, the optically readable marking 30 is designed as a matrix code and is arranged on the base body 10 such that the first metal pin 24, the second metal pin 40 and the optically readable marking 30 form an angle.

[0153] In the second embodiment of the Fig. 5b and the third embodiment of the Fig. 5c, the first metal pin 24, the second metal pin 40, and the optically readable marking 30 are arranged in a line. In the second embodiment, the optically readable marking 30 is designed as a barcode, and in the third embodiment, the optically readable marking 30 is designed as an alphanumeric code, which is machine-readable, for example, using optical character recognition.

[0154] At least one of the embodiments of the invention has at least one of the following advantages: - Assignment of essential parameters of the respective component before production. - Individual storage of the essential parameters in a database based on the respective identifier. - Simple provision of a wide range of parameters relevant for the manufacture, production and further processing of the component. - Simple, faster and more efficient troubleshooting in the production chain for components identified as defective. - Close monitoring of production. - Faster detection and sorting of defective components, if necessary before delivery to customers or processors. - Reduced waste in production. - Higher quality of the components overall. - Provision of selected data individually for each purchased component to processors or customers, so that their incoming inspection can be completely or at least partially eliminated, which saves time and costs for customers.

[0155] Although the present invention has been described using preferred embodiments, it is not limited thereto but can be modified in many ways. List of reference symbols DB database A1-A9 procedural steps B1-B8 procedural steps D1-D4 data set processing steps K1-K6 Customer process steps S1-S10 Process steps manufacturing T1-T8 Information V1, V2 registration steps 1 component 10 basic bodies 20 electrical feedthrough 22 insulating material 24 first metal pin 30 optically readable markings 40 second metal pin

Claims

[1] Method for producing a plurality of components with at least one electrical feedthrough, in which a functional element is fixed in a feedthrough opening of a base body by means of an electrically insulating material, wherein information is recorded in association with each of the components, characterized bythat in one of the manufacturing steps of the method each component or one of the precursors of each component is provided with an information memory, wherein the information is stored in the information memory and / or an identifier is stored in the information memory and the information is stored in a database in association with this identifier, wherein each component or a precursor of each component is uniquely identified in at least one manufacturing step via its position in a component carrier and via a component carrier identifier which is associated with the component carrier and uniquely identifies it. [2] A method of manufacturing according to claim 1, characterized bythat the information is selected from one or more of the group of information concerning raw materials used, information concerning manufacturing steps carried out, information concerning tools and equipment used, information concerning measurements and a unique identifier. [3] A method of manufacturing according to any one of claims 1 or 2, characterized by that each component or a precursor of each component is uniquely identified in at least one manufacturing step of the method by reading the information memory. [4] A method of manufacturing according to any one of claims 1 to 3, characterized by that a sample of the components or that each component is subjected to a final inspection in which at least one property of the component is measured, and the results of this final inspection are assigned to the component as information. [5] A method of manufacturing according to claim 4, characterized by that the results obtained during the final inspection are compared with specified target values and components are identified for which at least one of the specified limit values is exceeded. [6] A method of manufacturing according to claim 5, characterized by that for the identified components with at least one limit value violation, their associated information is evaluated and common information is determined for the identified components, which is identical for the identified components or agrees up to a specified tolerance. [7] A method of manufacturing according to claim 6, characterized bythat manufacturing steps, starting materials, tools and / or process conditions which these components have in common are determined from the common information and that, in accordance with the result of this determination, measures are initiated to improve the quality of future runs of the manufacturing process, these measures being selected from the replacement of a tool, replacement of a component carrier, replacement or calibration of a measuring device, corrections of process parameters, selection of other starting materials and combinations of several of these measures. [8] Method according to one of the preceding claims, characterized by that information which is identical for a large number of components is stored only once as group information in a database and a reference to this group information is assigned to each component. [9] Method according to one of the preceding claims, characterized by that the information store is designed as an optically readable marking, wherein the optically readable marking is preferably designed as a barcode or as a matrix code, in particular as a data matrix code. [10] Method according to claim 9, characterized by that the optically readable marking is formed on one of the functional elements, in particular by a sequence of notches. [11] Method according to one of claims 9 or 10, characterized by that the optically readable marking is obtained using a laser material processing process. [12] Component with at least one electrical feedthrough, in which a functional element is fixed in a feedthrough opening of a base body by means of an electrically insulating material, wherein the component was obtained by a method for production according to one of claims 1 to 11. [13] Ensemble of components with at least one electrical feedthrough, in which a functional element is fixed in a feedthrough opening of a base body by means of an electrically insulating material, wherein the components were obtained by a method for production according to one of claims 1 to 11, wherein the ensemble of components is accommodated in a container, wherein the container comprises an ensemble information memory, wherein the ensemble information memory contains information for identifying the components contained in the ensemble. [14] Method for further processing components according to claim 12, an ensemble of components according to claim 13 into units which each contain at least one of these components, wherein information associated with a component is obtained and is associated with one of the units, characterized bythat obtaining the information associated with a component comprises reading an information memory of the component or reading an ensemble information memory of a container that accommodates one or more components. [15] Method for further processing according to claim 14, characterized by that in at least one further processing step at least one parameter is adapted based on information assigned to the component. [16] Method for further processing according to claim 14 or 15 characterized by that a parameter contained in the information associated with the component is measured again and compared with the previously determined information. [17] Method for further processing according to claim 16, characterized bythat the comparison is repeated for several components which are a sample from a set of components or is repeated for all components of the set, whereby if a systematic deviation is detected, a correction factor is determined with which associated information is also corrected for components of this set which have not been measured again. [18] Device for producing components with at least one electrical feedthrough, in which a functional element is fixed in a feedthrough opening of a base body by means of an electrically insulating material, characterized by that the device comprises processing means for providing the components with an information storage device and that the device is designed to carry out one of the methods according to one of claims 1 to 11. [19] Device for further processing components according to claim 12, an ensemble of components according to claim 13 into units which each contain at least one of these components, characterized by that the device comprises reading means for reading the information memory of the components or the ensemble information memory of a container with the components and that the device is designed to carry out one of the methods according to one of claims 14 to 17. [20] Use of a component according to claim 12 in an ignition unit for airbags or an igniter for belt tensioners.

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