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WO2023126190A1 - Method for producing a form-fitting, inseparable connection between metallic components and plastic parts, by producing an undercut after assembly - Google Patents

Method for producing a form-fitting, inseparable connection between metallic components and plastic parts, by producing an undercut after assembly Download PDF

Info

Publication number
WO2023126190A1
WO2023126190A1 PCT/EP2022/086035 EP2022086035W WO2023126190A1 WO 2023126190 A1 WO2023126190 A1 WO 2023126190A1 EP 2022086035 W EP2022086035 W EP 2022086035W WO 2023126190 A1 WO2023126190 A1 WO 2023126190A1
Authority
WO
WIPO (PCT)
Prior art keywords
component region
component
plastic element
plastic
recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2022/086035
Other languages
French (fr)
Inventor
Patrick Poplien
Tobias Mueller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Biotronik SE and Co KG
Original Assignee
Biotronik SE and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Biotronik SE and Co KG filed Critical Biotronik SE and Co KG
Publication of WO2023126190A1 publication Critical patent/WO2023126190A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/44—Joining a heated non plastics element to a plastics element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/44—Joining a heated non plastics element to a plastics element
    • B29C65/46—Joining a heated non plastics element to a plastics element heated by induction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5064—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like of particular form, e.g. being C-shaped, T-shaped
    • B29C65/5071—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like of particular form, e.g. being C-shaped, T-shaped and being composed by one single element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined
    • B29C66/30325—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/543—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/547—Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles, e.g. endless tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • B29C66/7428—Transition metals or their alloys
    • B29C66/74283—Iron or alloys of iron, e.g. steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3468—Batteries, accumulators or fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/36—Plugs, connectors, or parts thereof

Definitions

  • the invention relates to a method for producing a form-fitting connection between a first and a second component region, wherein the first component region is made of metal, and wherein the second component region is made of a plastic.
  • Known solutions for connecting metal parts with plastic parts are, for example, screw connections, adhesive connections, snap-on connections, overmolding, or bayonet systems. Press connections, riveted connections and hot caulking are also known.
  • connections of assemblies or connections of component regions of different materials mostly consist of adhesive or mechanical connections, which loosen again at a certain tensile force.
  • the invention is therefore based on the task of creating a safe, simple and cost-effective connection between individual component regions or assemblies, which in particular can also be reliably automated without damaging the prefabricated assemblies/component regions. This problem is solved by a method having the features of claim 1 and by devices having the features of claims 12 and 13.
  • a method for producing a form -fit connection between a first component region and a second component region wherein a metallic first component region and a second component region consisting of a plastic are provided, wherein the first component region has a receptacle for inserting the second component region, and wherein the first component region has a recess on an inner side facing the receptacle, wherein a separate plastic element is arranged in the recess and then the second component region is introduced into the recess of the first component region, and wherein the plastic element is melted and joined to the second component region by material bonding.
  • the second component region is positively (i.e. form-fitting) connected to the first component (in particular inseparably), with the plastic element that is materially connected to the second component region forming an undercut, i.e. engaging (preferably form-fitting) in the recess of the first component region.
  • the two component regions can each be a single component or an area of a larger component or assembly.
  • a connection between the metallic component or component region and the second component region, which forms a plastic base body is made by means of a further plastic element, which bonds with the plastic base body and thus locks the metallic component region in place.
  • the plastic element is assembled together with the plastic base body during assembly of the metallic component region and, in particular, is in contact with the metallic component region and the plastic base body. After the parts have been joined, the plastic element is melted by introducing thermal energy into the plastic element (e.g. by heating the metal part (e.g. by induction heating)) and bonds (by material closure) to the plastic base body.
  • the plastic of the second component region and/or the plastic element can be PEEK, for example. Other thermoplastics are also conceivable.
  • the metallic first component region can consist of a metal or a metal alloy, such as steel. Other metals or metal alloys are also conceivable.
  • the recess is formed as a groove (in particular as a groove running around the inside of the first component region).
  • the plastic element is openly annular.
  • the plastic element is biased to be disposed in the recess of the first component region so that a diameter of the plastic element is reduced, wherein a restoring force generated by the biasing presses the plastic element into the recess on the inner side of the first component region.
  • the plastic element is arranged in a form-fitting manner in the recess and/or contacts the first component region, so that it is connected or coupled in particular thermally to the first component region.
  • the plastic element is arranged in the recess in such a way that a surface of the plastic element (in particular an inner side of the open annular plastic element) is flush with the inner side of the first component region. This enables unimpeded insertion of the second component region into the receptacle of the first component region.
  • the plastic element is melted in such a way that the surface of the plastic element is bonded to an outer side of the second component region facing the surface, that region of the outer side of the second component region being arranged in the receptacle of the first component region.
  • the second component region is arranged in a form-fitting manner in the receptacle of the first component region.
  • the first component region is cylindrical in shape and/or that the second component region is cylindrical in shape.
  • the first component region is an outer sleeve of an outer conductor assembly of an electrode, the outer sleeve consisting in particular of a metal, and/or that the second component region is part of an inner conductor assembly of the electrode, the second component region consisting in particular of thermoplastic material, such as PEEK.
  • the first component region and the second component region form components of a connector for an electrode lead.
  • the first component region is an X-ray ring
  • the second component region is or will be composed of two half-shells, which in particular each consist of PEEK and in particular are clamped by the X-ray ring (after the connection has been made).
  • a further aspect of the present invention relates to a device, in particular a medical device, comprising a metallic first component region and a second component region comprising a plastic (e.g. PEEK), wherein the two component regions are joined together by the method according to the invention.
  • a device in particular a medical device, comprising a metallic first component region and a second component region comprising a plastic (e.g. PEEK), wherein the two component regions are joined together by the method according to the invention.
  • a plastic e.g. PEEK
  • a further aspect of the present invention relates to a device, in particular a medical device, having a metallic first component region and a second component region which is composed of a plastic, the first component region having a receptacle into which the second component region is inserted, wherein the first component region has a recess on an inner side facing the receptacle, in which recess a plastic element is arranged, wherein the plastic element is connected to the second component region by melting in a material-locking manner, so that the first component region is connected to the second component region in a form-locking manner.
  • the plastic element forms an undercut for the first component region (see also above).
  • the two component regions of the device may further each be formed according to one of the embodiments described above.
  • the device comprises an electrode for stimulating body tissue and/or sensing signals.
  • the first component region is an outer sleeve of an outer conductor assembly of the electrode, the outer sleeve consisting in particular of a metal, and/or that the second component region is part of an inner conductor assembly of the electrode, the second component region consisting in particular of a thermoplastic, in particular PEEK.
  • the device is a connector for an electrode lead comprising the first component region and the second component region as components of the connector.
  • the first component region is an X-ray ring, and/or that the second component region is formed by two half-shells, which in particular each consist of a thermoplastic material, such as PEEK (see also above).
  • a thermoplastic material such as PEEK
  • Fig. 1 an exploded view of a connection according to the invention between a metallic first component region and a second component region made of plastic;
  • Fig. 2 a sectional view of the component regions of Fig. 1 connected to each other according to the invention
  • Fig. 3 a sectional view of an embodiment of a device according to the invention in the form of a connector for an electrode lead;
  • Fig. 4 an exploded view of a device comprising alternately arranged first and second component regions
  • Fig. 5 a sectional view of the arrangement according to Fig. 4;
  • Fig. 6 an exploded view of an alternative embodiment of a device according to the invention.
  • Fig. 7 a sectional view of the device according to Fig. 3.
  • Fig. 1 illustrates in connection with Fig. 2 a device 1 according to the invention or an embodiment of a method according to the invention for producing a form-fitting connection between a metallic first component region 10 and a second component region 20, which consists of a thermoplastic (e.g. PEEK).
  • the first component region 10 has a receptacle 11 for the preferably positive-locking (i.e. form-fitting) insertion of the second component region 20, the first component region 10 having a recess 13 (here, for example, in the form of a groove) on an inner side 12 facing the receptacle 11.
  • a separate plastic element 30, which is designed here, for example, in the form of an open ring, is arranged in a form-fitting manner in the recess 13, and the second component region 20 is preferably introduced in a form- fitting manner into the receptacle 11 of the first component region 10, so that, in particular, an inner side 31 of the separate plastic element 30 arranged in the recess 13 faces an outer side 21 of the second component region 20 and, in particular, makes contact with said outer side 21.
  • Heat is now introduced into the separate plastic element 30 surrounded by the first component region 10 by means of a suitable device 40 (e.g. by inductive heating of the metallic first component region 10), so that the plastic element 30 is melted and forms a material bond with the outer side 21 of the second component region 20 via the inner side 31.
  • the first and second component regions 10, 20 can be any conceivable component or component region of assemblies.
  • the first component region 10 may, for example, be a metallic outer sleeve 10 of an outer conductor assembly of an electrode, wherein the outer sleeve 10 is made, for example, of a steel.
  • the second component region 20 may be a part of an inner conductor assembly of the electrode, wherein in particular the second component region may be made of PEEK.
  • the two component regions 10, 20 may form components of a connector 1 for an electrode lead 2.
  • the second component region 20 can form a plastic base body of the plug 1, from which a plug contact 5 projects.
  • the plastic base body 20 is connected via the plastic element 30 in the manner described above to the first component region 10, which forms the outer sleeve 10 of the plug 1, from which an electrode lead body 3 extends, which surrounds at least one inner conductor 4, which may be of helical design and is electrically conductively connected to the plug contact 5.
  • the invention can also be used to realize a sequential structure of a component, in particular a connector, e.g. to isolate component groups from each other.
  • the first and second component regions 10, 20 can be arranged alternately, whereby a second component region 20 can be connected to a first component region 10 at both ends via a plastic element 30 in the manner described above.
  • the number of first component regions 10 or metal sleeves 10 and the number of second component regions 20 or plastic sleeves 20 can be continued as often as desired, depending on how many poles or electrically conductive assemblies 10 are to be realized.
  • the first component region 10 may be a metallic X-ray ring 10
  • the second component region 20 may be composed of two halfshells 20a, 20b clamped by the X-ray ring 10.
  • the two half-shells 20a, 20b may be made of PEEK.
  • a metal sleeve 10 or the X-ray ring 10 is thus ultimately slid here over a plastic cylinder 20 formed from the half-shells 20a, 20b and thermally fixed by the mechanism already described by means of the plastic element 30.
  • Fig. 6 shows an exploded view of this configuration.
  • Fig. 7 shows a sectional view of the X-ray ring 10 connected to the half-shells 20a, 20b via the plastic element 30 in accordance with the invention.
  • connection between the two component regions 10, 20 realized by the process according to the invention has an advantageously increased tensile strength due to the undercut formed. Furthermore, the use of PEEK for the second component region in particular proves advantageous due to the biocompatibility of this material.
  • the process offers the possibility of dispensing with auxiliary materials (such as adhesives), which are not biocompatible for certain material pairings that have to be bonded.
  • the invention advantageously permits the connection of already pre-assembled assemblies and thereby allows the use of inexpensive and simple components (in particular PEEK components), whereby a captive connection of two assemblies is achieved by means of the plastic element. Furthermore, the invention can be used to realize joints between materials that cannot be joined using other technologies. Finally, the connection according to the invention can also be produced automatically with advantage.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Method for producing a form-fitting connection between a first component region (10) and a second component region (20), wherein a metallic first component region (10) and a second component region (20) made of a plastic are provided, wherein the first component region (10) has a receptacle (11) for inserting the second component region (20), and wherein the first component region (10) has a recess (13) on an inner side (12) facing the receptacle (11), wherein a plastic element (30) is arranged in the recess (13) and the second component region (20) is introduced into the receptacle (11) of the first component region (10), and wherein the plastic element (30) is melted and joined to the second component region (20) by material bonding.

Description

Method for producing a form-fitting, inseparable connection between metallic components and plastic parts, by producing an undercut after assembly
The invention relates to a method for producing a form-fitting connection between a first and a second component region, wherein the first component region is made of metal, and wherein the second component region is made of a plastic.
Known solutions for connecting metal parts with plastic parts are, for example, screw connections, adhesive connections, snap-on connections, overmolding, or bayonet systems. Press connections, riveted connections and hot caulking are also known.
Known connections of assemblies or connections of component regions of different materials mostly consist of adhesive or mechanical connections, which loosen again at a certain tensile force.
In the case of bonded joints, the fundamental disadvantage is that a particular adhesive or additive is not designed for every material pairing. Furthermore, mechanical connections (e.g. screw or snap-on connections) often require sophisticated component geometries, which result in cost disadvantages. Furthermore, the automation of wet processes (bonding) or the handling of geometrically complicated components is usually complex and therefore comparatively cost-intensive.
The invention is therefore based on the task of creating a safe, simple and cost-effective connection between individual component regions or assemblies, which in particular can also be reliably automated without damaging the prefabricated assemblies/component regions. This problem is solved by a method having the features of claim 1 and by devices having the features of claims 12 and 13.
Advantageous embodiments of these aspects of the invention are indicated in the corresponding subclaims and are described below.
According to claim 1, a method for producing a form -fit connection between a first component region and a second component region is disclosed, wherein a metallic first component region and a second component region consisting of a plastic are provided, wherein the first component region has a receptacle for inserting the second component region, and wherein the first component region has a recess on an inner side facing the receptacle, wherein a separate plastic element is arranged in the recess and then the second component region is introduced into the recess of the first component region, and wherein the plastic element is melted and joined to the second component region by material bonding.
In this case, the second component region is positively (i.e. form-fitting) connected to the first component (in particular inseparably), with the plastic element that is materially connected to the second component region forming an undercut, i.e. engaging (preferably form-fitting) in the recess of the first component region.
The two component regions can each be a single component or an area of a larger component or assembly.
In other words, in the invention, a connection between the metallic component or component region and the second component region, which forms a plastic base body, is made by means of a further plastic element, which bonds with the plastic base body and thus locks the metallic component region in place. The plastic element is assembled together with the plastic base body during assembly of the metallic component region and, in particular, is in contact with the metallic component region and the plastic base body. After the parts have been joined, the plastic element is melted by introducing thermal energy into the plastic element (e.g. by heating the metal part (e.g. by induction heating)) and bonds (by material closure) to the plastic base body. The plastic of the second component region and/or the plastic element can be PEEK, for example. Other thermoplastics are also conceivable. Furthermore, the metallic first component region can consist of a metal or a metal alloy, such as steel. Other metals or metal alloys are also conceivable.
According to one embodiment of the method according to the invention, it is provided that the recess is formed as a groove (in particular as a groove running around the inside of the first component region).
Furthermore, according to one embodiment of the method according to the invention, it is provided that the plastic element is openly annular.
Further, according to one embodiment of the method of the invention, the plastic element is biased to be disposed in the recess of the first component region so that a diameter of the plastic element is reduced, wherein a restoring force generated by the biasing presses the plastic element into the recess on the inner side of the first component region.
Furthermore, according to one embodiment of the method according to the invention, it is provided that the plastic element is arranged in a form-fitting manner in the recess and/or contacts the first component region, so that it is connected or coupled in particular thermally to the first component region.
Furthermore, according to one embodiment of the method according to the invention, it is provided that the plastic element is arranged in the recess in such a way that a surface of the plastic element (in particular an inner side of the open annular plastic element) is flush with the inner side of the first component region. This enables unimpeded insertion of the second component region into the receptacle of the first component region.
Furthermore, according to one embodiment of the method according to the invention, it is provided that the plastic element is melted in such a way that the surface of the plastic element is bonded to an outer side of the second component region facing the surface, that region of the outer side of the second component region being arranged in the receptacle of the first component region.
Furthermore, according to one embodiment of the method according to the invention, it is provided that the second component region is arranged in a form-fitting manner in the receptacle of the first component region.
Furthermore, according to one embodiment of the method according to the invention, it is provided that the first component region is cylindrical in shape and/or that the second component region is cylindrical in shape.
Furthermore, according to one embodiment of the method according to the invention, it is provided that the first component region is an outer sleeve of an outer conductor assembly of an electrode, the outer sleeve consisting in particular of a metal, and/or that the second component region is part of an inner conductor assembly of the electrode, the second component region consisting in particular of thermoplastic material, such as PEEK.
According to a preferred embodiment of the method, the first component region and the second component region form components of a connector for an electrode lead.
Furthermore, according to one embodiment of the method according to the invention, it is provided that the first component region is an X-ray ring, and that the second component region is or will be composed of two half-shells, which in particular each consist of PEEK and in particular are clamped by the X-ray ring (after the connection has been made).
A further aspect of the present invention relates to a device, in particular a medical device, comprising a metallic first component region and a second component region comprising a plastic (e.g. PEEK), wherein the two component regions are joined together by the method according to the invention.
A further aspect of the present invention relates to a device, in particular a medical device, having a metallic first component region and a second component region which is composed of a plastic, the first component region having a receptacle into which the second component region is inserted, wherein the first component region has a recess on an inner side facing the receptacle, in which recess a plastic element is arranged, wherein the plastic element is connected to the second component region by melting in a material-locking manner, so that the first component region is connected to the second component region in a form-locking manner.
Here, in particular, the plastic element forms an undercut for the first component region (see also above).
The two component regions of the device may further each be formed according to one of the embodiments described above.
According to one embodiment of the device according to the invention, it is further provided that the device comprises an electrode for stimulating body tissue and/or sensing signals.
Here, according to one embodiment, it may be provided that the first component region is an outer sleeve of an outer conductor assembly of the electrode, the outer sleeve consisting in particular of a metal, and/or that the second component region is part of an inner conductor assembly of the electrode, the second component region consisting in particular of a thermoplastic, in particular PEEK.
According to a preferred embodiment of the device, the device is a connector for an electrode lead comprising the first component region and the second component region as components of the connector.
According to an alternative embodiment of the invention, it can be provided that the first component region is an X-ray ring, and/or that the second component region is formed by two half-shells, which in particular each consist of a thermoplastic material, such as PEEK (see also above). Further features, advantages and embodiments of the present invention will be described below with reference to the figures. It shows
Fig. 1 an exploded view of a connection according to the invention between a metallic first component region and a second component region made of plastic;
Fig. 2 a sectional view of the component regions of Fig. 1 connected to each other according to the invention;
Fig. 3 a sectional view of an embodiment of a device according to the invention in the form of a connector for an electrode lead;
Fig. 4 an exploded view of a device comprising alternately arranged first and second component regions;
Fig. 5 a sectional view of the arrangement according to Fig. 4;
Fig. 6 an exploded view of an alternative embodiment of a device according to the invention; and
Fig. 7 a sectional view of the device according to Fig. 3.
Fig. 1 illustrates in connection with Fig. 2 a device 1 according to the invention or an embodiment of a method according to the invention for producing a form-fitting connection between a metallic first component region 10 and a second component region 20, which consists of a thermoplastic (e.g. PEEK). In this case, the first component region 10 has a receptacle 11 for the preferably positive-locking (i.e. form-fitting) insertion of the second component region 20, the first component region 10 having a recess 13 (here, for example, in the form of a groove) on an inner side 12 facing the receptacle 11. To produce the formfitting and, in particular, inseparable connection, a separate plastic element 30, which is designed here, for example, in the form of an open ring, is arranged in a form-fitting manner in the recess 13, and the second component region 20 is preferably introduced in a form- fitting manner into the receptacle 11 of the first component region 10, so that, in particular, an inner side 31 of the separate plastic element 30 arranged in the recess 13 faces an outer side 21 of the second component region 20 and, in particular, makes contact with said outer side 21. Heat is now introduced into the separate plastic element 30 surrounded by the first component region 10 by means of a suitable device 40 (e.g. by inductive heating of the metallic first component region 10), so that the plastic element 30 is melted and forms a material bond with the outer side 21 of the second component region 20 via the inner side 31.
The first and second component regions 10, 20 can be any conceivable component or component region of assemblies.
According to one embodiment of the invention, the first component region 10 may, for example, be a metallic outer sleeve 10 of an outer conductor assembly of an electrode, wherein the outer sleeve 10 is made, for example, of a steel. Furthermore, the second component region 20 may be a part of an inner conductor assembly of the electrode, wherein in particular the second component region may be made of PEEK. Thus, in particular according to Fig. 3, the two component regions 10, 20 may form components of a connector 1 for an electrode lead 2. Here, the second component region 20 can form a plastic base body of the plug 1, from which a plug contact 5 projects. The plastic base body 20 is connected via the plastic element 30 in the manner described above to the first component region 10, which forms the outer sleeve 10 of the plug 1, from which an electrode lead body 3 extends, which surrounds at least one inner conductor 4, which may be of helical design and is electrically conductively connected to the plug contact 5.
As further shown in Figures 4 and 5, the invention can also be used to realize a sequential structure of a component, in particular a connector, e.g. to isolate component groups from each other. For example, the first and second component regions 10, 20 can be arranged alternately, whereby a second component region 20 can be connected to a first component region 10 at both ends via a plastic element 30 in the manner described above. In the arrangement of Figures 4 and 5, in particular the number of first component regions 10 or metal sleeves 10 and the number of second component regions 20 or plastic sleeves 20 can be continued as often as desired, depending on how many poles or electrically conductive assemblies 10 are to be realized.
According to another embodiment, for example, the first component region 10 may be a metallic X-ray ring 10, and the second component region 20 may be composed of two halfshells 20a, 20b clamped by the X-ray ring 10. The two half-shells 20a, 20b may be made of PEEK. In other words, a metal sleeve 10 or the X-ray ring 10 is thus ultimately slid here over a plastic cylinder 20 formed from the half-shells 20a, 20b and thermally fixed by the mechanism already described by means of the plastic element 30. Fig. 6 shows an exploded view of this configuration. Fig. 7 shows a sectional view of the X-ray ring 10 connected to the half-shells 20a, 20b via the plastic element 30 in accordance with the invention.
The connection between the two component regions 10, 20 realized by the process according to the invention has an advantageously increased tensile strength due to the undercut formed. Furthermore, the use of PEEK for the second component region in particular proves advantageous due to the biocompatibility of this material. In addition, the process offers the possibility of dispensing with auxiliary materials (such as adhesives), which are not biocompatible for certain material pairings that have to be bonded. Furthermore, the invention advantageously permits the connection of already pre-assembled assemblies and thereby allows the use of inexpensive and simple components (in particular PEEK components), whereby a captive connection of two assemblies is achieved by means of the plastic element. Furthermore, the invention can be used to realize joints between materials that cannot be joined using other technologies. Finally, the connection according to the invention can also be produced automatically with advantage.

Claims

- 9 -
Claims
1. Method for producing a form -fitting connection between a first component region (10) and a second component region (20), wherein a metallic first component region (10) and a second component region (20) made of a plastic are provided, wherein the first component region (10) has a receptacle (11) for inserting the second component region (20), and wherein the first component region (10) has a recess (13) on an inner side
(12) facing the receptacle (11), wherein a plastic element (30) is arranged in the recess
(13) and the second component region (20) is introduced into the receptacle (11) of the first component region (10), and wherein the plastic element (30) is melted and joined to the second component region (20) by material bonding.
2. Method according to claim 1, characterized in that the recess (13) is formed as a groove.
3. Method according to claim 1 or 2, characterized in that the plastic element (30) is openly annular.
4. Method according to one of the preceding claims, characterized in that the plastic element (30) is arranged in a form-fitting manner in the recess (13).
5. The method according to any one of the preceding claims, characterized in that the plastic element (30) is arranged in the recess (13) such that a surface (31) of the plastic element (30) is flush with the inner side (12) of the first component region (10).
6. The method according to claim 3 and 5, characterized in that the surface (31) is an inner side of the open annular plastic element (30).
7. The method according to claim 5 or 6, characterized in that the plastic element (30) is melted in such a way that the surface (31) of the plastic element (30) is bonded to an outer side (21) of the second component region (20) facing the surface (31). Method according to one of the preceding claims, characterized in that the second component region (20) is arranged in a form-fitting manner in the receptacle (11) of the first component region (10). Method according to any one of the preceding claims, characterized in that the first component region (10) is cylindrical in shape, and/or in that the second component region (20) is cylindrical in shape. A method according to any one of the preceding claims, characterized in that the first component region (10) is an outer sleeve of an outer conductor assembly of an electrode, and/or that the second component region (20) is a part of an inner conductor assembly of the electrode. A method according to any one of the preceding claims, characterized in that the first component region (10) and the second component region (20) form components of a connector (1) for an electrode lead (2). Method according to one of claims 1 to 9, characterized in that the first component region is an X-ray ring, and in that the second component region is formed by two half-shells, each of which consists of a plastic. A device (1) comprising a metallic first component region (10) and a second component region (20) made of a plastic material, the two component regions (10, 20) being connected by the method according to any one of the preceding claims. Device (1), having a metallic first component region (10) and a second component region (20) which is composed of a plastic, the first component region (10) having a receptacle (11) into which the second component region (20) is inserted, the first component region (10) having a recess (13) on an inner side (12) facing the receptacle (11), characterized in that the recess (13) has a plastic element (30) which is arranged in the recess (13), and in that the plastic element (30) is connected to the second component region (20) by melting in which a plastic element (30) is arranged, the - 11 - plastic element (30) being joined to the second component region (20) by melting, so that the first component region (20) is joined to the second component region (10) in a form-fitting manner.
PCT/EP2022/086035 2022-01-03 2022-12-15 Method for producing a form-fitting, inseparable connection between metallic components and plastic parts, by producing an undercut after assembly Ceased WO2023126190A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22150042.4 2022-01-03
EP22150042 2022-01-03

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005114765A1 (en) * 2004-05-20 2005-12-01 Seidensha Electronics Co., Ltd Method of joining polymer battery lead tub to resin film
CN101253662B (en) * 2005-07-22 2013-03-27 力特保险丝有限公司 Electrical device with integrally fused conductor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005114765A1 (en) * 2004-05-20 2005-12-01 Seidensha Electronics Co., Ltd Method of joining polymer battery lead tub to resin film
CN101253662B (en) * 2005-07-22 2013-03-27 力特保险丝有限公司 Electrical device with integrally fused conductor

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