WO2022090231A1 - Outil comprenant une plaque perforée et une plaque de recouvrement pour souder deux pièces et procédé de fabrication d'un corps formé par soudage de deux pièces - Google Patents

Outil comprenant une plaque perforée et une plaque de recouvrement pour souder deux pièces et procédé de fabrication d'un corps formé par soudage de deux pièces Download PDF

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Publication number
WO2022090231A1
WO2022090231A1 PCT/EP2021/079691 EP2021079691W WO2022090231A1 WO 2022090231 A1 WO2022090231 A1 WO 2022090231A1 EP 2021079691 W EP2021079691 W EP 2021079691W WO 2022090231 A1 WO2022090231 A1 WO 2022090231A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
welding
openings
tool
cover plate
Prior art date
Application number
PCT/EP2021/079691
Other languages
German (de)
English (en)
Inventor
Stefan Mochev
Ulrich Endemann
Original Assignee
Basf Se
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 Basf Se filed Critical Basf Se
Publication of WO2022090231A1 publication Critical patent/WO2022090231A1/fr

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Classifications

    • 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
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • B29C65/103—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined direct heating both 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
    • 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
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2422—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
    • B29C66/24221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical being circular
    • 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
    • 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
    • B29C66/73921—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 characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/841—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions
    • 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
    • B29C66/001—Joining in special atmospheres
    • B29C66/0012—Joining in special atmospheres characterised by the type of environment
    • B29C66/0014—Gaseous environments
    • B29C66/00141—Protective gases
    • 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
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • 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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • 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
    • B29C66/731—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 intensive physical properties of the material of the parts to be joined
    • B29C66/7311—Thermal properties
    • B29C66/73115—Melting point
    • 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
    • B29C66/731—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 intensive physical properties of the material of the parts to be joined
    • B29C66/7311—Thermal properties
    • B29C66/73117—Tg, i.e. glass transition temperature
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7377—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
    • B29C66/73771—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being amorphous
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7377—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
    • B29C66/73773—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being semi-crystalline
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91931—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined
    • B29C66/91933—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined higher than said fusion temperature
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91941—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to Tg, i.e. the glass transition temperature, of the material of one of the parts to be joined
    • B29C66/91943—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to Tg, i.e. the glass transition temperature, of the material of one of the parts to be joined higher than said glass transition temperature
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • B29K2105/165—Hollow fillers, e.g. microballoons or expanded particles
    • B29K2105/167—Nanotubes

Definitions

  • Tool comprising a perforated plate and a cover plate for welding two body parts and method for producing a shaped body by welding two body parts
  • the present invention relates to a tool (W) comprising a first perforated plate (4a) and a first cover plate (3a) for welding two body parts (1a, 1b) together, and a method for producing a shaped body by welding two body parts (1a, 1b) together. , comprising providing the tool (W).
  • Hot-gas welding is a frequently used process for producing complex molded parts from two or more parts.
  • the disadvantage of hot gas welding is that a separate tool is usually required for each component geometry, which heats up the gas and brings it to the welding ridges of the partial bodies:
  • the hot gas tool typically consists of a gas distribution plate for the first partial body, a gas heating plate for the first partial body, a heating element, a gas heating plate for the second partial body and a gas distribution plate for the second partial body.
  • the gas distribution plate and, if necessary, the gas heating plate must be adapted for each new component geometry. If gas channels are also used as described in WO 2020/164978 A1, these must also be replaced for each new component geometry. This means that two to six tool components or even the entire tool per mold have to be replaced. This means a relatively high expenditure of time and money, especially for small series and in development phases.
  • the object on which the present invention is based is therefore to provide a tool for welding two partial bodies or a method for producing a shaped body by welding two partial bodies, which does not or only has the disadvantages of the tools or the methods from the prior art described above has to a reduced extent.
  • the tool or the method should be as simple and inexpensive as possible.
  • a first perforated plate (4a) which comprises a top (6a), a bottom (8a) and a side bar (9a) with a self-contained course, the top (6a), the bottom (8a) and the side bar (9a ) enclose a cavity (10a), the top (6a) has a plurality x a of openings (5a) and the bottom (8a) has a means (13a) for feeding hot gas into the cavity (10a), and a first Cover plate (3a) comprising a channel (7a), wherein a welding web (2a) of the first partial body (1a) can be positioned in the region of the channel (7a) and wherein the first cover plate (3a) and the first perforated plate (4a ) are connected to one another in such a way that the cover plate (3a) covers at least part z a of the plurality x a of openings (5a) and the channel (7a) completely or at least partially covers part
  • the tool (W) for welding two partial bodies (1a, 1b) comprises a first perforated plate (4a), which comprises an upper side (6a), an underside (8a) and a side bar (9a) with a closed course, the top (6a), the bottom (8a) and the side bar (9a) enclosing a cavity (10a).
  • the top (6a) has a multiplicity x a of openings (5a).
  • the multiplicity x a preferably has values in the range from 5 to 20,000, more preferably values in the range from 10 to 5,000, particularly preferably values in the range from 50 to 2,000.
  • the subject matter of the present invention is therefore also a tool (W) for welding two partial bodies (1a, 1b), in which the multiplicity x a has values in the range from 5 to 20,000.
  • the openings (5a) can have the same or a different geometric shape.
  • the object of the present invention is therefore also a tool (W) for welding two partial bodies (1a, 1b), in which the openings (5a) have the same or a different geometric shape.
  • the openings (5a) can be circular, for example, but they can also have the shape of a polygon such as a triangle, square, pentagon or hexagon.
  • the openings (5a) are circular and have a diameter in the range 0.5 to 20 mm, preferably in the range 0.5 to 10 mm, more preferably in the range 1 to 4 mm.
  • the individual openings (5a) can have the same diameter or a different diameter.
  • the object of the present invention is therefore also a tool (W) for welding two partial bodies (1a, 1b), in which the openings (5a) are circular and have a diameter in the range from 0.5 to 20 mm.
  • a further object of the present invention is therefore also a tool (W) for welding two partial bodies (1a, 1b), in which the individual openings (5a) have the same or a different diameter.
  • FIG. 2 shows the upper side (6a) of a first perforated plate (4a) as an example.
  • the top (6a) comprises a plurality x a of openings (5a) which are circular and have the same diameter.
  • the underside (8a) of the first perforated plate (4a) has a means (13a) for feeding hot gas into the cavity (10a).
  • Suitable means (13a) for feeding hot gas into the cavity (10a) are all means (13a) known to those skilled in the art that are suitable for feeding gases, such as nozzles, bores and/or slots.
  • the tool (W) according to the invention further comprises a first cover plate (3a) which comprises a channel (7a).
  • the channel (7a) preferably has a self-contained course.
  • the welding web (2a) of the first partial body (1a) can be positioned in the area of the channel (7a).
  • the course of the welding web (2a) preferably essentially corresponds to the course of the channel (7a). This means that when the course of the welding ridge (2a) is projected onto the tool (W), at least 80% of the area of the projection of the welding ridge (2a) lies within the channel (7a).
  • the channel (7a) thus has an area which is preferably larger than the area of the course of the welding ridge (2a) (relative to the end face of the welding ridge (2a)). In this embodiment it is possible that the welding ridge (2a) can be inserted into the channel (7a).
  • a first inner space (20a) can thus be formed between the first partial body (1a) and the first cover plate (3a).
  • the first cover plate (3a) and the first perforated plate (4a) are connected to one another in such a way that the cover plate (3a) covers at least part z a of the plurality x a of openings (5a) and the channel (7a) covers part y a of the Large number x a of openings (5a ) leaves completely or at least partially open and hot gas from the cavity (10a ) can be supplied.
  • the part y a of the plurality x a of openings (5a) has values in the range from 5 to 80 percent, preferably values in the range from 5 to 20 percent, based on the plurality x a of openings (5a) .
  • the part z a of the plurality x a of openings (5a) consequently has values in the range from 20 to 95 percent, preferably in the range from 80 to 95 percent, based on the plurality x a of openings (5a) .
  • the subject of the present invention is therefore also a tool (W) for welding two partial bodies (1a, 1b), in which part y a of the plurality x a of openings (5a) has values in the range from 5 to 80 percent, based on the plurality x a of openings (5a).
  • first cover plate (3a) and the first perforated plate (4a) are reversibly connected to one another.
  • the object of the present invention is therefore also a tool (W) for welding two partial bodies (1a, 1b), in which the first cover plate (3a) and the first perforated plate (4a) are reversibly connected to one another.
  • the term "reversible" means that the connection between the first cover plate (3a) and the first perforated plate (4a) can be separated and restored without the first cover plate (3a) and the first perforated plate (4a) being removed be damaged or destroyed.
  • the tool (W) additionally comprises a heating element (15a) and a means (12a) for heating gas.
  • the subject of the present invention is therefore also a tool (W) for welding two partial bodies (1a, 1b), the tool (W) additionally comprising a heating element (15a) and a means (12a) for heating gas.
  • the present invention is not the top (6a), the bottom (8a) and the side bar (9a) that enclose one, but the top (6a), the side bar (9a) and the means (12a) for heating gas cavity (10a).
  • the first perforated plate (4a) has no underside (8a), but the means (12a) for heating gas has a means (13a) for supplying hot gas.
  • the tool (W) can additionally include a means (30a) for active pressure regulation.
  • the means (30a) for actively regulating the pressure is positioned in an area which is enclosed by the course of the channel (7a).
  • Suitable means (30a) for active pressure regulation are, for example, pumps through which gas can be conveyed.
  • Suitable pumps are, for example, vacuum pumps or ejectors or compressors. A reduction in pressure is possible with vacuum pumps or ejectors, and an increase in pressure is possible with compressors.
  • the means (30a) comprises an opening in the tool (W) via which a vacuum pump and/or a compressor can be connected to the tool (W).
  • FIG. 1 shows an example of the cross section of a tool (W) on which the first welding body (1a) is positioned.
  • the tool (W) comprises a first perforated plate (4a) and a first cover plate (3a).
  • the tool (W) comprises a heating element (15a) and a means (12a) for heating gas.
  • a tool (W) which additionally comprises a second perforated plate (4b) and a second cover plate (3b), the second perforated plate (4b) having an upper side (6b), an underside (8b) and a side bar ( 9b) with a self-contained course, the top (6b), the bottom (8b) and the side bar (9b) enclosing a cavity (10b), the top (6b) having a plurality x b of openings (5b).
  • the underside (8b) has a means (13b) for feeding hot gas into the cavity (10b), and the second cover plate (3b) comprises a channel (7b), wherein a welding web (2b) of the second partial body (1b) can be positioned in the area of the channel (7b) and wherein the second cover plate (3b) and the second perforated plate ( 4b) are connected to one another in such a way that the cover plate (3b) covers at least part z b of the plurality x b of openings (5b) and the channel (7b) completely or at least covers part y b of the plurality x b of openings (5b). partially open and hot gas can be supplied from the cavity (10b) to the channel (7b) through the part y b of the openings (5b) left completely or at least partially open by the channel (7b).
  • the subject of the present invention is therefore also a tool (W) for welding two partial bodies (1a, 1b), the tool (W) additionally comprising a second perforated plate (4b) and a second cover plate (3b),
  • the second perforated plate ( 4b) comprises a top (6b), a bottom (8b) and a side bar (9b) with a self-contained course, the top (6b), the bottom (8b) and the side bar (9b) having a cavity (10b) enclose, the top (6b) has a plurality x b of openings (5b) and the bottom (8b) has a means (13b) for feeding hot gas into the cavity (10b), and the second cover plate (3b) has a channel (7b), wherein a welding web (2b) of the second part body (1b) can be positioned in the area of the channel (7b) and wherein the second cover plate (3b) and the second perforated plate (4b) are connected to one another in such a way that the Cover plate (3b) covering at least part
  • the channel (7b) leaves part y b of the plurality x b of openings (5b) completely or at least partially open, and through part y b of the openings (5b) left completely or at least partially open by the channel (7b) the channel (7b) hot gas from the cavity (10b) can be supplied.
  • the channel (7b) like the channel (7a), preferably has a self-contained course.
  • the object of the present invention is therefore also a tool in which the channel (7a) and/or the channel (7b) have a closed course.
  • x a and x b and/or ya and y b and /or z a and z b it is possible for x a and x b and/or ya and y b and /or z a and z b to differ.
  • x a and x b , y a and y b , and z a and z b are identical.
  • the tool (W) can also include a means (30b) for active pressure regulation.
  • means (30a) for active pressure regulation.
  • the tool (W) can also include a means (12b) for heating gas and a heating element (15b).
  • the above statements regarding the means (12a) for heating gas and the heating element (15a) apply accordingly to the means (12b) for heating gas and to the heating element (15b).
  • the tool (W) comprises only one heating element, either a heating element (15a) or a heating element (15b).
  • the tool (W) comprises a first side (60a) and a second side (60b), the channel (7a) being arranged on the first side (60a) and the channel (7a) being arranged on the second side (60b). 7b) is arranged.
  • FIG. 3 shows an example of the cross section of a tool (W) on which the first welding body (1a) or the second partial body (1b) is positioned.
  • the tool (W) comprises a first perforated plate (4a) and a second perforated plate (4b), a first cover plate (3a) and a second cover plate (3b) and means (12a, 12b) for heating gas.
  • the tool (W) includes a heating element (15a).
  • the side with the channel (7a) represents the first side (60a) and the side with the channel (7b) represents the second side (60b).
  • the subject matter of the present application is also a method for producing a shaped body (F) which encloses a cavity (H) by welding two partial bodies (1a, 1b) which includes steps a), b), c), d) and e) comprises, wherein in step b) the tool (W) according to the invention is provided.
  • the first body part (1a) is provided, wherein the first body part (1a) comprises a welding web (2a) according to the invention.
  • the welding web (2a) comprises a self-contained course.
  • the subject matter of the present invention is therefore also a method in which the welding web (2a) comprises a self-contained course.
  • the first partial body (1a) comprises an opening which is delimited by the welding web (2a).
  • the welding web (2a) is adjoined by an outer surface (40a) which is essentially closed.
  • the outer surface (40a) delimits the partial body (1a) on the outside.
  • the term “substantially closed” means that the outer surface (40a), based on the total area of the outer surface (40a), has less than 80%, preferably less than 40% and particularly preferably less than 5% opening areas. In a particularly preferred embodiment, the outer surface (40a) has no openings.
  • a first interior space (20a) of the first partial body (1a) is defined by the area between the surface spanned by the welding web (2a) and the inner surface (50a) of the first partial body (1a).
  • FIG. 4a shows an example of a top view of a hemispherical partial body (1a) with a welding ridge (2a). The welding ridge (2a) defines the end of the first partial body (1a).
  • the welding web (2a) can be designed in all forms known to those skilled in the art.
  • the welding web (2a) can be flat, edge-shaped, stepped or rib-shaped.
  • the welding web (2a) is rib-shaped, with the rib having a rectangular cross-section.
  • the width of the welding ridge (2a) is usually in the range from 0.5 to 16 mm, preferably in the range from 1 to 10 mm and particularly preferably in the range from 2 to 8 mm.
  • FIG. 4b shows an example of a perspective representation of a hemispherical partial body (1a), in which the end of the partial body (1a) forms the welding web (2a).
  • the welding web (2a) contains a first thermoplastic polymer.
  • thermoplastic polymer means both exactly one first thermoplastic polymer and a mixture of two or more first thermoplastic polymers.
  • thermoplastic polymers known to those skilled in the art are suitable as the first thermoplastic polymer.
  • the first thermoplastic polymer is preferably selected from the group consisting of amorphous thermoplastic polymers and partially crystalline thermoplastic polymers.
  • the first thermoplastic polymer is therefore selected, for example, from the group consisting of polyamides, polyoxymethylene, polyphthalamide (PPA), polysulfones (PSU), polyethersulfones (PESII), polyphenylsulfones (PPSII), polyethylene terephthalates and polybutylene terephthalates.
  • the first thermoplastic polymer typically has a glass transition temperature (T G1 ).
  • T G1 glass transition temperature of the first thermoplastic polymer is in the range from 50 to 350° C., preferably in the range from 150 to 270° C. and particularly preferably in the range from 170 to 240° C., determined by means of differential scanning calorimetry ; DSC).
  • the first thermoplastic polymer is a partially crystalline thermoplastic polymer
  • the first thermoplastic polymer usually also has a melting temperature (TMI).
  • T M I melting temperature of the first thermoplastic polymer
  • the melting temperature (T M I) of the first thermoplastic polymer is then in the range from 80 to 400 °C, preferably in the range from 140 to 320 °C and particularly preferably in the range from 160 to 300 °C, determined by means of differential scanning calorimetry (differential scanning calorimetry; DSC).
  • the welding web (2a) of the first partial body (1a) can contain other components in addition to the first thermoplastic polymer.
  • Such further components are known to the person skilled in the art and are selected, for example, from the group consisting of fillers and additives.
  • fillers known to those skilled in the art for thermoplastic polymers are suitable as fillers.
  • Such fillers are selected, for example, from the group consisting of glass beads, glass fibers, carbon fibers, carbon nanotubes and chalk.
  • Suitable additives are also known to those skilled in the art and are selected, for example, from the group consisting of antinucleating agents, stabilizers, end-group functionalizers and dyes.
  • the first partial body (1a) preferably contains the first thermoplastic polymer.
  • the first partial body (1a) particularly preferably contains the same components as the welding web (2a). If the welding ridge (2a) contains other components in addition to the first thermoplastic polymer, it is preferred that the first partial body (1a) also contains the other components in addition to the first thermoplastic polymer.
  • the first partial body (1a) can have any shape known to those skilled in the art.
  • the first partial body (1a) preferably has shapes in which the aforementioned preferred conditions according to the invention are met.
  • the shaped body preferably has a bowl-shaped or box-shaped shape, the shape defined by the course of the welding web (2a) and the shape of the outside (40a) and the inside (50a) can have complex shapes, such as those required in automotive engineering.
  • a second part-body (1b) is additionally provided in step a), the second part-body (1b) comprising a welding web (2b).
  • the welding web (2b) comprises a self-contained course.
  • step a) additionally comprises the provision of the second part-body (1b), the second part-body (1b) comprising a welding web (2b).
  • the first partial body (1a) and the second partial body (2b) can be provided by any method known to the person skilled in the art, for example by means of injection molding, extrusion or blow molding.
  • Figures 5a to 5d show an example of the ends of the first part bodies (1a).
  • the ends of the second partial bodies (1b) can have corresponding shapes. It goes without saying that when the first partial body (1a) shown in Figures 5a to 5d is welded to a second partial body (1b), the course of the welding web (2b) of the second shaped body (1b) is preferably a mirror image of the course of the Welding web (2a) of the first partial body (1a).
  • step b) a tool (W) is provided.
  • the statements and preferences made above with regard to the tool (W) apply accordingly to the method.
  • the tool (W) provided in step b) comprises, for example, a first perforated plate (4a) which comprises an upper side (6a), an underside (8a) and a side bar (9a) with a self-contained course, the upper side (6a ),
  • the bottom (8a) and the side bar (9a) enclose a cavity (10a), the top (6a) has a plurality x a of openings (5a) and the bottom (8a) has a means (13a) for supplying hot Having gas in the cavity (10a), and a first cover plate (3a) which comprises a channel (7a), wherein in the area of the channel (7a) a welding ridge (2a) of the first partial body (1a) can be positioned and wherein the first cover plate (3a) and the first perforated plate (4a) are connected to one another in such a way that the cover plate (3a) covers at least a part z a of the plurality x a of openings (5a) and the channel (7a) leaves a part
  • the tool (W) provided in step b) also preferably additionally comprises a second perforated plate (4b) and a second cover plate (3b), the second perforated plate (4b) having an upper side (6b), an underside (8b) and a side bar (9b) with a self-contained course, with the top (6b), the bottom (8b) and the side bar (9b) enclosing a cavity (10b), the top (6b) having a plurality x b of openings (5b) and the underside (8b) has a means (13b) for supplying hot gas into the cavity (10b), and the second cover plate (3b) comprises a channel (7b), in the region of the channel (7b) a welding ridge (2b) of the second partial body (1b) and wherein the second cover plate (3b) and the second perforated plate (4b) are connected to one another in such a way that the cover plate (3b) has at least part z b of the plurality x b of openings ( 5a) and the channel (7b
  • the tool (W) provided in step b) additionally comprises a second perforated plate (4b) and a second cover plate (3b), the second perforated plate (4b) having an upper side (6b) , a bottom (8b) and a side bar (9b) with a self-contained course, the top (6b), the bottom (8b) and the side bar (9b) enclosing a cavity (10b), the top (6b) has a plurality x b of openings (5b) and the underside (8b) has a means (13b) for feeding hot gas into the cavity (10b), and the second cover plate (3b) comprises a channel (7b), wherein in a welding web (2b) of the second partial body (1b) can be positioned in the area of the channel (7b) and the second cover plate (3b) and the second perforated plate (4b) are connected to one another in such a way that the cover plate (3b) covers at least a part z b of the pluralit
  • step c) the welding web (2a) of the first body part (1a) is positioned in the region of the channel (7a) of the first cover plate (3a), with a first interior space between the first body part (1a) and the first cover plate (3a). (20a) trains.
  • step c) additionally includes the positioning of the welding web (2b) of the second partial body (1b) in the region of the channel (7b) of the second cover plate (3b), with there being a gap between the second partial body (1b) and the second cover plate ( 3b) forms a second interior space (20b).
  • step c) additionally includes the positioning of the welding web (2b) of the second partial body (1b) in the region of the channel (7b) of the second cover plate (3b), wherein between the second partial body ( 1b) and the second cover plate (3b) forms a second interior space (20b), and step d) additionally includes the supply of hot gas through the channel (7b) from the cavity (10b), whereby the weld web (2b) of the second partial body (1b) is melted.
  • the welding ridge (2a) is positioned in step c) in an area of the channel (7a), with the end face of the welding ridge (2a) facing the tool (W) being at a distance ( Xa) which is in the range from >0 to 3 mm outside the channel (7a) or in the range from 0 to 10 mm inside the channel (7a).
  • the distance (Xa) is preferably in the range from 0.5 to 8 mm within the channel (7a). It goes without saying that the distance (Xa) within the channel (7a) is always smaller than the channel depth of the channel (7a). If the distance (Xa) is in the range > 0 to 3 mm outside the channel (7a), the welding ridge (2a) is outside the channel area.
  • the welding ridge (2b) is positioned in step c) in an area of the channel (7b), with the end face of the welding ridge (2b) facing the tool (W) being at a distance from the channel entry level (14b).
  • (Xb) which is in the range from >0 to 3 mm outside the channel (7b) or in the range from 0 to 10 mm inside the channel (7b).
  • the distance (Xb) is preferably in the range from 0.5 to 8 mm within the channel (7b).
  • FIGS. 6a and 6b The preferred positioning of the welding ridges (2a, 2b) in the area of the channels (7a, 7b) is shown as an example in FIGS. 6a and 6b.
  • FIG. 7a the face of the welding ridge (2a) is positioned within the channel (7a).
  • FIG. 7b the end face of the welding web (2a) is located outside of the channel (7a) and thus above the channel entry level (14a).
  • step d) a hot gas is supplied through the channel (7a) from the cavity (10a), as a result of which the welding web (2a) of the first partial body (1a) is melted.
  • step d the welding ridge (2a) of the first partial body (1a) heats up, and the first thermoplastic polymer contained in the welding ridge (2a) softens or melts.
  • a hot gas means both precisely one hot gas and a mixture of two or more hot gases.
  • step d) the area around the welding web (2a) can also be heated.
  • the first partial body (1a) contains the first thermoplastic polymer and then the first thermoplastic polymer contained in the area around the welding ridge (2a) also melts.
  • the hot gas can be fed to the means (13a) for feeding gas into the cavity (10a) and thus into the channel (7a) by any method known to those skilled in the art.
  • gases known to those skilled in the art are suitable as the hot gas.
  • gases are selected, for example, from the group consisting of CO 2 , N 2 and air.
  • air is understood as meaning the gas mixture in the earth's atmosphere. This is known to those skilled in the art.
  • the hot gas can be heated by any of the methods known to those skilled in the art. For example, it can be heated by a heat exchanger. In addition, it is possible, for example, if the hot gas is C0 2 , that the hot gas is produced in situ by the combustion of hydrocarbons and is therefore hot.
  • the hot gas has, for example, a temperature in the range from 100 to 600.degree. C., preferably in the range from 250 to 500.degree. C. and particularly preferably in the range from 300 to 500.degree.
  • the temperature of the hot gas that is supplied in step d) relates to the temperature that the hot gas has when it exits the openings (5a) into the channel (7a), ie the temperature of the hot gas in the channel (7a).
  • the welding web (2a) of the first partial body (1a) can be heated to any desired temperature (T 1a ) in step d).
  • the temperature (T 1a ) is usually below the decomposition temperature of the first thermoplastic polymer contained in the welding web (2a).
  • the welding ridge (2a) of the first partial body (1a) is preferably heated in step d) to a temperature (T 1a ) which is above the glass transition temperature (T G1 ) of the first thermoplastic polymer contained in the welding ridge (2a) if the first thermoplastic polymer is an amorphous thermoplastic polymer, and which is above the melting temperature (T M I) of the first thermoplastic polymer contained in the weld web (2a) if the first thermoplastic polymer is a partially crystalline thermoplastic polymer.
  • the welding web (2a) of the first partial body (1a) heats up to a temperature (T 1a ) in the range from 0 to 300 °C, preferably in the range from 30 to 250 °C and particularly preferably in the range from 60 to 200 °C above the glass transition temperature (T G1 ) of the first thermoplastic polymer contained in the welding web (2a) if the first thermoplastic polymer is an amorphous thermoplastic polymer, and in the range from 0 to 300 °C, preferably in the range from 30 to 250° C. and particularly preferably in the range from 60 to 200° C. above the melting temperature (T M1 ) of the first thermoplastic polymer contained in the welding web (2a) if the first thermoplastic polymer is a partially crystalline thermoplastic polymer.
  • T 1a a temperature in the range from 0 to 300 °C, preferably in the range from 30 to 250 °C and particularly preferably in the range from 60 to 200 °C above the glass transition temperature (T G1 ) of the first thermo
  • the welding web (2a) of the first partial body (1a) heats up to a temperature (T 1a ) which is in the range from 100 to 500°C.
  • step d the first thermoplastic polymer melts or softens.
  • thermoplastic polymer in connection with the first thermoplastic polymer as well as in connection with the second thermoplastic polymer is understood to mean that the first thermoplastic Polymer or the second thermoplastic polymer is plastically deformable, preferably flowable.
  • step d) in a preferred embodiment, the pressure in the first interior space (20a) is actively regulated by means (30a).
  • the active regulation of the pressure can be carried out throughout the duration of step d). In other words, this means that the active regulation of the pressure is carried out at the same time as the hot gas is supplied through the channel (7a). In this embodiment, the active pressure regulation is carried out as long as hot gas is supplied through the channel (7a). This embodiment is preferred.
  • gas is removed from the first interior space (20a) and/or the second interior space (20b) by means (30a) and/or means (30b).
  • the gas is preferably removed actively by pumping or sucking off. This preferably takes place during step d).
  • gas is supplied to the first interior space (20a) and/or the second interior space (20b) by the means (30a) and/or the means (30b).
  • the supply preferably takes place actively by pressing in or pumping in. This preferably takes place during method step d).
  • hot gas is supplied through the channel (7a).
  • an internal pressure (pl) is created in the first interior space (20a) which is higher than the external pressure (pA). Due to the fact that the internal pressure (pl) is greater than the external pressure (pA), without active pressure control during method step d), more hot gas flows past the side of the welding web (2a) facing away from the first interior space (20a) than on the dem first interior (20a) facing side of the welding bar (2a). As a result, the side of the welding web (2a) facing away from the first interior space (20a) is heated to a greater extent than the side of the welding web (2a) facing the first interior space (20a). The same also applies to the heating of the second welding web (2b).
  • asymmetrical weld seams arise due to the different degrees of melting in process step e) when the weld webs (2a), (2b) are brought into contact.
  • the internal pressure (pl) in the first interior space (20a) is greater than the external pressure (pA).
  • receive unsymmetrical welds Due to the higher internal pressure (p1) in method step d), a weld bead is obtained which, in relation to the first interior space (20a), is curved outwards.
  • Active pressure regulation by the means (30a) makes it possible and preferred according to the invention to carry out method step d) in such a way that the internal pressure (pl) in the first interior space (30a) and the external pressure (pA) are essentially the same.
  • the pressure difference from internal pressure (pI) to external pressure (pA) is preferably at most 50%, preferably at most 30%, more preferably at most 10%, particularly preferably at most 5%. As a result, symmetrical weld seams are obtained, as are shown in FIGS. 7 and 8 by way of example.
  • the internal pressure (p1) is therefore at most 50%, preferably at most 30%, more preferably at most 10%, particularly preferably at most 5% above the external pressure (pA).
  • the internal pressure (p1) is at most 50%, preferably at most 30%, more preferably at most 10%, particularly preferably at most 5% below the external pressure (pA).
  • the active pressure control thus makes it possible according to the invention to actively influence the symmetry of the weld seam.
  • the active pressure regulation is carried out in such a way that a symmetrical weld seam is obtained.
  • the internal pressure (p1) in process step d) is preferably regulated such that it is at least 10%, preferably at least 30% and particularly preferably at least 50% above the external pressure.
  • the symmetry of the weld is controlled such that it has a bead on the side facing the first interior space (20a).
  • the internal pressure (p1) is regulated during process step d) so that it is at least 10%, preferably at least 30% and particularly preferably at least 50% below the external pressure (pA).
  • step e) the molten welding ridge (2a) of the first partial body (1a) is brought into contact with the welding ridge (2b) of the second partial body (1b), the course of the welding ridge (2b) essentially following the course of the welding ridge (2a) is equivalent to.
  • the course of the welding ridge (2b) is a mirror image of the course of the welding ridge (2a).
  • “Bringing into contact” is understood here to mean that the heated welding ridge (2a) of the first partial body (1a) touches the heated welding ridge (2b) of the second partial body (1b).
  • the heated welding ridge (2a) of the first partial body (1a) can be brought into contact with the heated welding ridge (2b) of the second partial body (1b) under pressure, so that the heated welding ridge (2a) of the first partial body (1a) and the heated welding ridge ( 2b) of the second partial body (1b) are pressed against one another. Methods for this are known to the person skilled in the art.
  • the pressure when the heated welding ridge (2a) of the first body part (1a) is brought into contact with the welding ridge (2b) of the second body part (1b) is in the range from 0.1 to 10 MPa, preferably in the range from 0.5 to 6 MPa .
  • thermoplastic polymers contained in the welding ridges (2a, 2b) bond. After being brought into contact, the heated weld ridges (2a, 2b) are cooled, resulting in the welded joint.
  • heated welding ridge (2a, 2b) and “melted welding ridge (2a, 2b)” or “softened welding ridge (2a, 2b)” are used synonymously here.
  • the cooling of the heated welding ridge (2a) of the first partial body (1a) and the heated welding ridge (2b) of the second partial body (1b) in step e) can be carried out using any of the methods known to those skilled in the art. For example, cooling can take place in air.
  • step e) a weld seam is formed between the first body part (1a) and the second body part (1b).
  • the weld is in the area where originally the welding ridge (2a) of the first body part (1a) and the welding ridge (2b) of the second body part (1b) were.
  • a weld seam is known as such to those skilled in the art.
  • the thickness of the weld seam between the first partial body (1a) and the second partial body (1b) is, for example, in the range from 20 to 1000 ⁇ m, preferably in the range from 30 to 400 ⁇ m and most preferably in the range from 30 to 300 ⁇ m, determined using microscopy images.
  • step e) the shaped body which can enclose a cavity (H) is thus obtained.
  • This shaped body is characterized by a particularly homogeneous weld seam and good mechanical properties.
  • the cavity is formed by the first interior space (20a) and the second interior space (20b).
  • the subject matter of the present invention is therefore also a shaped body (F) which encloses a cavity (H), obtainable by the process according to the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne un outil (W) comprenant une première plaque perforée (4a) et une première plaque de recouvrement (3a) pour souder deux pièces (1a, 1b), ainsi qu'un procédé de fabrication d'un corps formé par soudage de deux pièces (1a, 1b), comprenant l'utilisation de l'outil (W).
PCT/EP2021/079691 2020-10-29 2021-10-26 Outil comprenant une plaque perforée et une plaque de recouvrement pour souder deux pièces et procédé de fabrication d'un corps formé par soudage de deux pièces WO2022090231A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20204707.2 2020-10-29
EP20204707 2020-10-29

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WO2022090231A1 true WO2022090231A1 (fr) 2022-05-05

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PCT/EP2021/079691 WO2022090231A1 (fr) 2020-10-29 2021-10-26 Outil comprenant une plaque perforée et une plaque de recouvrement pour souder deux pièces et procédé de fabrication d'un corps formé par soudage de deux pièces

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59112614U (ja) * 1983-01-20 1984-07-30 アイシン精機株式会社 熱風溶着機用ノズル
WO2013143837A1 (fr) * 2012-03-27 2013-10-03 Huf Hülsbeck & Fürst Gmbh & Co. Kg Procédé de production d'un émetteur d'identification pour véhicules
WO2020164978A1 (fr) 2019-02-14 2020-08-20 Basf Se Procédé de fabrication d'un corps façonné renfermant une cavité par soudage de deux parties de corps et outil pour souder deux parties de corps

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59112614U (ja) * 1983-01-20 1984-07-30 アイシン精機株式会社 熱風溶着機用ノズル
WO2013143837A1 (fr) * 2012-03-27 2013-10-03 Huf Hülsbeck & Fürst Gmbh & Co. Kg Procédé de production d'un émetteur d'identification pour véhicules
WO2020164978A1 (fr) 2019-02-14 2020-08-20 Basf Se Procédé de fabrication d'un corps façonné renfermant une cavité par soudage de deux parties de corps et outil pour souder deux parties de corps

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