DE3631082A1 - Process and apparatus for bonding mouldings - Google Patents

Process and apparatus for bonding mouldings

Info

Publication number
DE3631082A1
DE3631082A1 DE19863631082 DE3631082A DE3631082A1 DE 3631082 A1 DE3631082 A1 DE 3631082A1 DE 19863631082 DE19863631082 DE 19863631082 DE 3631082 A DE3631082 A DE 3631082A DE 3631082 A1 DE3631082 A1 DE 3631082A1
Authority
DE
Germany
Prior art keywords
weld
weld seam
molded parts
elements
cross
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.)
Withdrawn
Application number
DE19863631082
Other languages
German (de)
Inventor
Norbert Dipl Ing Dr Rer Lenge
Siegfried Ing Grad Klinger
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.)
Bosch Telecom GmbH
Original Assignee
ANT Nachrichtentechnik GmbH
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 ANT Nachrichtentechnik GmbH filed Critical ANT Nachrichtentechnik GmbH
Priority to DE19863631082 priority Critical patent/DE3631082A1/en
Publication of DE3631082A1 publication Critical patent/DE3631082A1/en
Withdrawn legal-status Critical Current

Links

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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/04—After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed 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
    • 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
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • 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
    • B29C66/003—Protecting areas of the parts to be joined from overheating
    • 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
    • B29C66/03—After-treatments in the joint area
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/324—Avoiding burr formation
    • B29C66/3242—Avoiding burr formation on the inside of a tubular or hollow article
    • 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
    • B29C66/348—Avoiding melting or weakening of the zone directly next to the joint area, e.g. by cooling
    • 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
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential 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
    • B29C66/50—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
    • B29C66/63—Internally supporting the article during joining
    • 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
    • B29C66/737—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
    • B29C66/7375—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 uncured, partially cured or fully cured
    • B29C66/73751—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 uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized
    • B29C66/73752—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 uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized the to-be-joined areas of both parts to be joined being uncured
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B29C66/81815—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the clamps
    • 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
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B29C66/914—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
    • B29C66/9161—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 heat or the thermal flux, i.e. the heat flux
    • B29C66/91641—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 heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time
    • B29C66/91643—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 heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time following a heat-time profile
    • B29C66/91645—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 heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time following a heat-time profile by steps
    • 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
    • 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
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0672—Spin 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • 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
    • B29C66/73—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
    • B29C66/73774—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 the to-be-joined areas of both 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
    • B29C66/919—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
    • 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
    • B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
    • 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
    • B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
    • B29K2105/246—Uncured, e.g. green
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

To achieve greater strength of plastic mouldings (F1, F2) welded with a form fit, an additional crosslinking is carried out in the region of the weld (S) (Figure 1). <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zum Verbinden von Form­ teilen aus vernetzbaren Thermoplasten gemäß dem Oberbegriff des Patentanspruchs 1 sowie eine Vorrichtung zum Durchführen dieses Verfahrens.The invention relates to a method for connecting form parts from cross-linkable thermoplastics according to the generic term of claim 1 and a device for performing this procedure.

Thermoplastische Kunststoffe können mittels verschiedenster Verfahren formschlüssig miteinander verschweißt werden. Üb­ lich sind das Heizelementschweißen, das Extrusionsschweißen, das Rotationsreibschweißen, das Vibrationsreibschweißen und das Ultraschallschweißen (Kunststoffmaschinenführer, Johan­ naber/Stoeckhert, C. Hanser Verlag, München, Wien, S. 682-705).Thermoplastic materials can be positively welded to one another using a wide variety of processes. Heating element welding, extrusion welding, rotary friction welding, vibration friction welding and ultrasonic welding are common (plastic machine operator, Johan naber / Stoeckhert, C. Hanser Verlag, Munich, Vienna, pp. 682-705).

Aufgabe der Erfindung ist es ein Verfahren gemäß dem Oberbe­ griff so auszubilden, daß eine hohe Festigkeit der Schweiß­ naht erreicht wird. Außerdem soll eine Vorrichtung zum Durchführen dieses Verfahrens angegeben werden. Die Aufgabe wird bezüglich des Verfahrens durch die Merkmale des Patent­ anspruchs 1 und bezüglich der Vorrichtung durch die Merkmale des Patentanspruchs 5 gelöst. Die Ansprüche 2 bis 4 zeigen Ausgestaltungen des Verfahrens und die Ansprüche 6 und 7 Ausgestaltungen der Vorrichtung auf.The object of the invention is a method according to the Oberbe gripped so that a high strength of sweat is reached. In addition, a device for Perform this procedure. The task is related to the process by the features of the patent claims 1 and regarding the device by the features of claim 5 solved. Claims 2 to 4 show Refinements of the method and claims 6 and 7 Refinements of the device.

Die Vernetzung von Formteilen aus Polymeren durch Strahlen­ vernetzung oder durch Zugabe von Vernetzungsmitteln ist aus zahlreichen Veröffentlichungen an sich bekannt, z. B. DE-OS 24 20 784; DE-OS 25 06 105; DE-OS 28 40 701. Diese Veröf­ fentlichungen geben jedoch keine Anregungen Schweißnähte zu­ sätzlich zu vernetzen, um eine höhere Festigkeit dieser Schweißnaht zu erreichen.The cross-linking of molded parts made of polymers by blasting crosslinking or by adding crosslinking agents is over numerous publications known per se, e.g. B. DE-OS  24 20 784; DE-OS 25 06 105; DE-OS 28 40 701. This publication However, publications do not provide any suggestions for weld seams in addition to cross-link to increase the strength of this To reach weld seam.

Die Erfindung beruht auf der Erkenntnis, daß die Zugfestig­ keit der beim Verbinden von Formteilen aus Thermoplasten entstehenden Schweißnaht geringer ist als die des üblichen Ausgangsmaterials. Durch die erfindungsgemäße zusätzliche Vernetzung im Bereich der Schweißnaht läßt sich die Zugfe­ stigkeit bis auf 100% des Ausgangsmaterials erhöhen. Die Maßnahmen der Erfindung lassen sich bei allen Schweißverbin­ dungstechniken für Kunststoffe, wie Heizelementschweißen, Extrusionsschweißen, Rotationsreibschweißen, Vibrationsreib­ schweißen und Ultraschallschweißen anwenden. Die Erfindung ermöglicht die Herstellung kompliziert geformter aus mehre­ ren Teilstücken hergestellter Formteile, die eine hohe Zug­ festigkeit aufweisen. Während bei herkömmlichen Schweißnäh­ ten nur die Van-der-Waalsschen Kräfte für den Zusammenhalt sorgen, wirken bei den vernetzten Schweißnähten der Erfin­ dung kovalente Bindungskräfte.The invention is based on the knowledge that the tensile strength speed when connecting molded parts made of thermoplastics resulting weld seam is less than that of the usual Source material. Through the additional according to the invention The Zugfe can be networked in the area of the weld Increase stability up to 100% of the starting material. The Measures of the invention can be applied to all welded joints manure techniques for plastics, such as heating element welding, Extrusion welding, rotary friction welding, vibration friction welding and use ultrasonic welding. The invention enables the production of complex shaped from several Ren sections of molded parts that have a high train have strength. While with conventional welding only the Van der Waals forces for cohesion care, work with the networked weld seams of the Erfin covalent binding forces.

Anhand der Zeichnungen wird die Erfindung nun näher erläu­ tert. Es zeigtThe invention will now be explained in more detail with reference to the drawings tert. It shows

Fig. 1 einen Schnitt durch eine Verbindungs­ naht zweier Formteile, Fig. 1 shows a section through a connecting seam of two mold parts,

Fig. 2 eine Seitenansicht eines Heizelementes. Fig. 2 is a side view of a heating element.

Zwei rohrförmige Kunststofformteile F 1 und F 2, bestehend aus vernetzbaren Thermoplasten, wie z. B. Polyethylen oder Mi­ schungen mit einem Copolymerisat und Füllstoffen werden an ihrer Verbindungsstelle - Schweißnaht S - durch Rotation - Erzeugung von Reibungswärme - oder, wie dies Fig. 1 zeigt, mittels Erwärmung durch Heizelemente H 1 bzw. H 2 plastifi­ ziert. Bei diesem Plastifizierungsvorgang darf die Aktivie­ rungstemperatur eines zugesetzten Peroxids bzw. einer zuge­ setzten Azoverbindung noch nicht erreicht werden. Anschlie­ ßend werden die beiden Formteile K 1 und K 2 zusammengedrückt, um einen ausreichenden Formschluß zu gewährleisten. Die Kunststofformteile K 1 und K 2 werden nach dem formschlüssi­ gen Verschweißen im Bereich der Schweißnaht S vernetzt, um eine höhere Festigkeit der Schweißnaht zu erreichen. Dies kann in einer ersten Ausgestaltung der Erfindung durch Be­ strahlung mit einer geeigneten Strahlenquelle - α, β, γ- Strahlung - erfolgen. Für diese Ausgestaltung wird die Ei­ genvernetzungsfähigkeit des Ausgangsmaterials ausgenutzt.Two tubular plastic moldings F 1 and F 2 , consisting of crosslinkable thermoplastics, such as. B. polyethylene or Mi mixtures with a copolymer and fillers are at their junction - weld S - by rotation - generating frictional heat - or, as shown in FIG. 1, plastifi ed by heating by heating elements H 1 and H 2 . The activation temperature of an added peroxide or an added azo compound must not yet be reached during this plasticizing process. Subsequently, the two molded parts K 1 and K 2 are pressed together to ensure a sufficient positive fit. The plastic moldings K 1 and K 2 are cross-linked after the form-fitting welding in the area of the weld seam S in order to achieve a higher strength of the weld seam. This may be radiation-Be in a first embodiment of the invention with a suitable radiation source - α, β, γ - radiation - take place. For this configuration, the egg cross-linking ability of the starting material is used.

Bei einer zweiten Ausgestaltung der Erfindung (Fig. 1) wird dem Ausgangsmaterial der beiden Formteile F 1 und F 2 ein üb­ liches chemisches Vernetzungsmittel zugesetzt. Solche chemi­ schen Vernetzungsmittel sind beispielsweise Peroxide oder Azoverbindungen. Die chemischen Vernetzungsmittel werden so gewählt, daß ihre Aktivierungstemperatur über dem Kristal­ litschmelzpunkt der Kunststofformteile liegt. Eine Vernet­ zung der beiden Kunststofformteile erfolgt somit bei Erwär­ mung der Schweißnaht S über die Aktivierungstemperatur des Peroxids bzw. der Azoverbindung. Die Plastifizierungstemper­ atur des verwendeten HDPE (High Density Polyethylene) liegt im Bereich zwischen 110°C und 140°C. Die Aktivierungstem­ peratur - Scorchtemperatur - üblicher Peroxide liegt bei et­ wa 150°C, so daß für die Erwärmung der Schweißnaht S beim Vernetzungsvorgang vorzugsweise eine Temperatur von etwa 180°C gewählt wird. Das Aufheizen der Kunststofformteile F 1 und F 2 im Bereich ihrer Schweißnaht S auf die Temperatur von etwa 180°C wird ebenfalls durch die Heizelemente H 1 und H 2 erreicht. Um die Formstabilität der Schweißverbindung S zu gewährleisten, sind Formstabilisierungselemente FS 1, FS 2, FS 3, FS 4 vorgesehen, zwischen die die Heizelemente H 1 bzw. H 2 eingebettet sind. Die Formstabilisierungselemente beste­ hen aus Ringen bzw. Sektoren, die bezüglich der rohrförmi­ gen Kunststofformteile F 1 und F 2 sowohl innen als auch außen angebracht sind (Fig. 1). Ebenso bestehen die Heizelemente H 1 und H 2 aus Innen- und Außenteilen.In a second embodiment of the invention ( Fig. 1) a usual chemical crosslinking agent is added to the starting material of the two molded parts F 1 and F 2 . Such chemical crosslinking agents are, for example, peroxides or azo compounds. The chemical crosslinking agents are selected so that their activation temperature is above the crystalline melting point of the plastic molded parts. The two molded plastic parts are thus cross-linked when the weld S is heated via the activation temperature of the peroxide or azo compound. The plasticizing temperature of the HDPE (High Density Polyethylene) used is in the range between 110 ° C and 140 ° C. The activation temperature - scorch temperature - common peroxides is approximately 150 ° C., so that a temperature of approximately 180 ° C. is preferably selected for heating the weld seam S during the crosslinking process. The heating of the plastic moldings F 1 and F 2 in the area of their weld S to a temperature of approximately 180 ° C. is also achieved by the heating elements H 1 and H 2 . In order to ensure the dimensional stability of the welded connection S , shape stabilizing elements FS 1 , FS 2 , FS 3 , FS 4 are provided, between which the heating elements H 1 and H 2 are embedded. The shape stabilization elements consist of rings or sectors that are attached to the tube-shaped plastic molded parts F 1 and F 2 both inside and outside ( Fig. 1). The heating elements H 1 and H 2 also consist of inner and outer parts.

Ein Außen- bzw. Innenteil eines sektorförmigen Heizelementes zeigt Fig. 2. Es weist schlitzförmige Öffnungen Ö auf, da­ mit an der Verbindungsstelle - Schweißnaht S - die Luft ent­ weichen kann und es so zu einem vollständigen Formschluß kommt.An outer or inner part of a sector-shaped heating element is shown in FIG. 2. It has slit-shaped openings Ö , since with the connection point - weld seam S - the air can escape and there is a complete positive connection.

Die Erfindung ermöglicht den Aufbau zusammengesetzter Muf­ fenformteile, beispielsweise Breitband-Mehrfachabzweiger, die eine Zugfestigkeit wie einstückig hergestellte Muffen­ formteile aufweisen. Im Anschluß an die Vernetzung der Schweißnähte kann das zusammengesetzte Formteil zur Errei­ chung einer Wärmerückstellfähigkeit nochmals erwärmt und ei­ ner Expansion unterzogen werden.The invention enables the construction of composite sleeves fenformteile, for example broadband multiple taps, which have a tensile strength like sleeves made in one piece have molded parts. Following the networking of The assembled molding can be welded to the seams a heat recovery ability again heated and egg undergo expansion.

Claims (7)

1. Verfahren zum Verbinden von Formteilen aus vernetzbaren Thermoplasten, wobei diese Formteile formschlüssig mit­ einander verschweißt werden, dadurch gekennzeichnet, daß zur Erreichung einer höheren Festigkeit im Bereich der Schweißnaht (S) zusätzlich eine Vernetzung vorgenommen wird.1. A method for connecting molded parts made of crosslinkable thermoplastics, these molded parts being welded to one another in a form-fitting manner, characterized in that a crosslinking is additionally carried out in order to achieve a higher strength in the area of the weld seam ( S ). 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Schweißnaht (S) strahlenvernetzt wird.2. The method according to claim 1, characterized in that the weld seam ( S ) is cross-linked. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zur Vernetzung der Schweißnaht (S) ein chemisches Vernet­ zungsmittel zugegeben wird.3. The method according to claim 1, characterized in that a chemical crosslinking agent is added to crosslink the weld ( S ). 4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß als Vernetzungsmittel ein Peroxid oder eine Azoverbindung zugegeben wird, welche(s) erst über dem Kristallitschmelz­ punkt des Thermoplasten vernetzungsaktiv wird, und daß der Bereich der Schweißnaht (S) nach dem vollständigen Formschluß der Formteile (F 1, F 2) auf eine Temperatur er­ wärmt wird, die über der Aktivierungstemperatur des che­ mischen Vernetzungsmittels liegt und somit zur Vernetzung der Schweißnaht (S) führt.4. The method according to claim 3, characterized in that a peroxide or an azo compound is added as crosslinking agent, which (s) is crosslinking active only above the crystallite melting point of the thermoplastic, and that the area of the weld seam ( S ) after the complete positive locking of the molded parts ( F 1 , F 2 ) he is heated to a temperature which is above the activation temperature of the chemical cross-linking agent and thus leads to the cross-linking of the weld ( S ). 5. Vorrichtung zum Durchführen des Verfahrens nach Anspruch 3, gekennzeichnet durch
  • - Formstabilisierungselemente (FS 1, FS 2, FS 3, FS 4) im Bereich der Schweißnaht (S),
  • - zwischen die Formstabilisierungselemente (FS 1, FS 2, FS 3, FS 4) eingebettete Heizelemente (H 1, H 2) zum Erwärmen der Schweißnaht (S) auf die Temperatur des chemischen Vernetzungsmittels.
5. Device for performing the method according to claim 3, characterized by
  • - shape stabilization elements (FS 1 , FS 2 , FS 3 , FS 4 ) in the area of the weld seam ( S ),
  • - Between the form stabilization elements (FS 1 , FS 2 , FS 3 , FS 4 ) embedded heating elements ( H 1 , H 2 ) for heating the weld seam ( S ) to the temperature of the chemical crosslinking agent.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Heizelemente (H 1, H 2) und die Formstabilisierungsele­ mente (FS 1, FS 2, FS 3, FS 4) sektorförmig um die Schweiß­ naht (S) angeordnet sind.6. The device according to claim 5, characterized in that the heating elements ( H 1 , H 2 ) and the form stabilizing elements ( FS 1 , FS 2 , FS 3 , FS 4 ) are arranged sector-shaped around the weld ( S ). 7. Vorrichtung nach Anspruch 5 oder 6, dadurch gekennzeich­ net, daß die Heizelemente (H 1, H 2) schlitzförmige Öffnun­ gen (Ö) zum Entweichen von Luft beim Erwärmen aufweisen.7. The device according to claim 5 or 6, characterized in that the heating elements ( H 1 , H 2 ) have slit-shaped openings ( Ö ) for the escape of air when heated.
DE19863631082 1986-09-12 1986-09-12 Process and apparatus for bonding mouldings Withdrawn DE3631082A1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0333379A2 (en) * 1988-03-12 1989-09-20 Victaulic Plc Process for the jointing of polyolefin bodies
EP0523786A1 (en) * 1991-07-19 1993-01-20 Wellman Machinery Of Michigan, Inc. Method for making reinforced structural composite assemblies
WO1997028951A1 (en) * 1996-02-09 1997-08-14 Heinz Stampfer Process for the production of weld seams on plastic parts, especially a pipe-welding process, pipeline system with pipe connections produced according to this process as well as the use of an hf generator for the carrying out of this process
DE102006010815A1 (en) * 2006-03-07 2007-09-13 Geiger Technik Gesellschaft mit beschränkter Haftung Thermoplastic housing of pressurized component useful as a reservoir and supply container, exhibits a cavity, which is completely surrounded by openings, wall surfaces lying opposite with one another, and a wall cross-section

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0333379A2 (en) * 1988-03-12 1989-09-20 Victaulic Plc Process for the jointing of polyolefin bodies
EP0333379A3 (en) * 1988-03-12 1991-06-05 Victaulic Plc Process for the jointing of polyolefin bodies
EP0523786A1 (en) * 1991-07-19 1993-01-20 Wellman Machinery Of Michigan, Inc. Method for making reinforced structural composite assemblies
WO1997028951A1 (en) * 1996-02-09 1997-08-14 Heinz Stampfer Process for the production of weld seams on plastic parts, especially a pipe-welding process, pipeline system with pipe connections produced according to this process as well as the use of an hf generator for the carrying out of this process
DE102006010815A1 (en) * 2006-03-07 2007-09-13 Geiger Technik Gesellschaft mit beschränkter Haftung Thermoplastic housing of pressurized component useful as a reservoir and supply container, exhibits a cavity, which is completely surrounded by openings, wall surfaces lying opposite with one another, and a wall cross-section

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