EP1137472A4 - Laser welded transmission filter housing and method and apparatus for making same - Google Patents

Laser welded transmission filter housing and method and apparatus for making same

Info

Publication number
EP1137472A4
EP1137472A4 EP99968638A EP99968638A EP1137472A4 EP 1137472 A4 EP1137472 A4 EP 1137472A4 EP 99968638 A EP99968638 A EP 99968638A EP 99968638 A EP99968638 A EP 99968638A EP 1137472 A4 EP1137472 A4 EP 1137472A4
Authority
EP
European Patent Office
Prior art keywords
laser
filter
flange
juncture
synthetic resin
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Withdrawn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
EP99968638A
Other languages
German (de)
French (fr)
Other versions
EP1137472A1 (en
Inventor
John W Gizowski
Markus Beer
J Thomas Schriempf
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.)
IBS Filtran GmbH
Original Assignee
IBS Filtran 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
Priority claimed from DE1998160357 external-priority patent/DE19860357B4/en
Priority claimed from US09/387,807 external-priority patent/US6193833B1/en
Application filed by IBS Filtran GmbH filed Critical IBS Filtran GmbH
Publication of EP1137472A1 publication Critical patent/EP1137472A1/en
Publication of EP1137472A4 publication Critical patent/EP1137472A4/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Withdrawn legal-status Critical Current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
    • 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
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/111—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/027—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
    • B01D35/0273—Filtering elements with a horizontal or inclined rotation or symmetry axis submerged in tanks or reservoirs
    • 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
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission 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
    • B29C65/14—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
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12463—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12469—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being asymmetric
    • 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
    • B29C66/302—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
    • B29C66/01—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
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/541—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 a substantially flat extra element being placed between and clamped by the joined hollow-preforms
    • B29C66/5412—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 a substantially flat extra element being placed between and clamped by the joined hollow-preforms said substantially flat extra element being flexible, e.g. a membrane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/541—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 a substantially flat extra element being placed between and clamped by the joined hollow-preforms
    • B29C66/5416—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 a substantially flat extra element being placed between and clamped by the joined hollow-preforms said substantially flat extra element being perforated, e.g. a screen
    • 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
    • B29C66/65—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 with a relative motion between the article and the welding tool
    • B29C66/652—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 with a relative motion between the article and the welding tool moving the welding tool around the fixed 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
    • B29C66/70—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
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • 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
    • B29C66/863—Robotised, e.g. mounted on a robot arm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/54—Computerised or programmable systems
    • 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
    • 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
    • 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
    • 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
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • 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
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0026—Transparent
    • B29K2995/0027—Transparent for light outside the visible spectrum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/14—Filters

Definitions

  • the present invention relates to the field of transmission filters and the manufacture thereof.
  • the invention is concerned with a preferred transmission filter having a first flange transparent to a laser beam and a second flange opaque to the laser beam and meltable upon exposure thereto.
  • the flanges are in registered, abutting relationship with a laser weld bead at the juncture between the flanges to provide a fluid seal circumscribing the filter.
  • a prior art fluid filter such as an oil or transmission filter for a vehicle, includes first and second housing sections each presenting a circumscribing flange composed of synthetic resin material with the housing sections defining a chamber containing filter media.
  • One of the flanges presents an upstanding weld rib that engages the surface of the other flange at a juncture.
  • the flanges are vibration welded by vibrating one of the flanges at a high frequency. This creates heat at the juncture to create a weld bead circumscribing the filter and providing a fluid seal.
  • the edges of the filter media are crimped between the flanges inboard of the weld bead to provide an additional fluid seal.
  • the present invention solves the prior art problems discussed above and provides a distinct advance in the state of the art.
  • the preferred fluid filter includes first and second housing sections forming an interior chamber with filter media received therein.
  • the housing sections include respective first and second circumscribing flanges composed of synthetic resin material with the first flange composed of material transmissive to laser light and the second flange opaque to laser light and meltable upon exposure thereto.
  • the flanges are in a registered, abutting relationship at a circumscribing juncture.
  • a laser weld bead at the juncture couples the flanges to provide a fluid seal circumscribing the filter.
  • the preferred filter manufacturing apparatus includes a robot arm, a programmable processor coupled with the arm to control the movement thereof, a laser coupled with the robot arm operable to emit a laser beam, and a fixture to hold the components of the preferred fluid filter.
  • the processor includes programming to operate the robot arm in a manner to direct the laser beam through the first flange onto the second flange along a path circumscribing the filter at the juncture in order to form the laser weld bead thereat in accordance with the preferred method of the present invention.
  • Figure 1 is a schematic representation illustrating the preferred fluid filter along with the preferred filter manufacturing apparatus in accordance with the present invention
  • Fig. 2 is a partial sectional view of the filter of Fig. 1 before formation of a laser weld bead by the apparatus of Fig. 1; and Fig. 3 is a view similar to Fig. 2 after formation of the laser weld bead.
  • Fig. 1 illustrates preferred fluid filter 10 along with preferred manufacturing apparatus 12 in accordance with the present invention.
  • filter 10 includes first and second housing sections 14 and 16 having respective first and second, circumscribing flanges 18 and 20 extending therefrom, and filter media 22.
  • First housing section 14 is preferably composed of synthetic resin material transmissive to laser light such as unpigmented, glass-filled, nylon 6/6.
  • Housing section 14 integrally includes housing walls 24 and 26 with first flange 18 extending outwardly from housing wall 26.
  • First flange 18 integrally includes flange wall 28 extending generally transversely from housing wall 26, edge wall 30 extending from the distal edge of flange wall 28 toward second housing section 16, and crimping rib 32 extending from the inboard face of flange wall 28 adjacent housing wall 26.
  • Flange wall 28 also presents weld surface 34 located between edge wall 30 and rib 32.
  • Second housing section 16 is preferably composed of synthetic resin material opaque to laser light and meltable upon exposure thereto such as black pigmented, glass-filled, nylon 6/6.
  • Housing section 16 integrally includes housing walls 36 and 38 with second flange 20 extending outwardly from housing wall 38.
  • Second flange 20 integrally includes flange wall 40 extending generally transversely from housing wall 38, and upstanding weld rib 42 extending from the inboard face of flange wall 40 toward flange wall 28 of first flange 18.
  • the distal end of weld rib 42 presents weld face 44 abutting weld surface 34 of first flange 18 to form circumscribing juncture 46 between flanges
  • Flange wall 40 is also configured to present crimping groove 48 complementally configured and positioned to receive crimping rib 32.
  • the edges of filter media 22 are positioned inboard of juncture 46 and crimped between rib 32 and groove 48.
  • Manufacturing apparatus 12 includes robot arm 50, programmable logic controller (PLC) 52, laser 54 and fixture 56.
  • PLC 52 is operable to control the operation and movement of robot arm 50 according to the programming stored therein.
  • Robot arm 50 and PLC 52 are conventional in nature and the programming thereof is well within the skill of the art.
  • Fixture 56 is also conventional of the type used for holding a fluid filter in position during conventional vibration welding.
  • Laser 54 is preferably a 400 watt neodynium YAG pulse laser for producing a pulsed laser beam. It will also be appreciated that other types of lasers can be used such as a 2000 watt neodynium YAG continuous wave laser.
  • filter 10 is placed in fixture 56 with flanges 18, 20 in registered, abutting relationship with filter media 22 received within chamber 60 defined by housing walls 24, 26 and 36, 38, and with the edges of the filter media crimped between rib 32 and groove 48 as illustrated in Fig. 2.
  • First housing section 14 is positioned between laser 54 and second housing section 16.
  • PLC 52 controls robot arm 50 according to the programming in order to direct laser beam 58 emitted from laser 54 toward filter 10.
  • PLC 52 directs laser beam 58 through first flange 18, which is transmissive to laser light, onto weld face 44 of second flange 20 at juncture 46 and along the path of juncture 46.
  • weld face 44 Upon exposure to laser beam 58 as it traverses along juncture 46, weld face 44 (opaque to laser light) is heated as is the material adjacent weld surface 34 to form a melt of synthetic resin material.
  • PLC 52 After completing the closed loop path defined by juncture 46, PLC 52 turns off laser beam 58.
  • the melt of synthetic resin material rapidly cools to form a laser weld bead 62 at juncture 46 circumscribing filter 10 to join flanges 18, 20 and thereby join housing sections 14, 16 to form filter 10.
  • Laser weld bead 62 also forms a continuous fluid seal circumscribing filter 10.
  • the filter, manufacturing apparatus and method of the present invention enable high productivity in the manufacture of fluid filters of the type used for transmission fluid and engine oil.
  • the present invention also allows the joining of housing section 14, 16 without vibration welding thereby enabling a closer crimp of the edges of the filter media for a tighter seal than has been possible in the prior art.
  • the present invention encompasses many variations in the preferred embodiment described herein.
  • different types of lasers can be used and different types of equipment for directing the laser beam.
  • the laser could be held in a fixed position and controlled mirrors could be used to direct laser beam along a prescribed path instead of using the preferred robot arm.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Robotics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laser Beam Processing (AREA)
  • Filtering Materials (AREA)

Abstract

A preferred transmission filter (10) includes a first flange (18) transparent to a laser beam (58) and includes a second flange (20) opaque to the laser beam (58) and meltable upon exposure thereto. The flanges (18, 20) are in registered, abutting relationship with a laser weld bead (62) at the juncture (44) between the flanges (18, 20) to provide a fluid seal circumscribing the filter (10). The preferred filter manufacturing apparatus (12) includes a laser (54) coupled to a robot arm (50) controlled by a programmable logic controller (52). The controller (52) operates the robot arm (50) in order to direct the laser beam (58) through the first flange (18) onto the second flange (20) and along the juncture (44) to form the laser weld bead (62).

Description

LASER WELDED TRANSMISSION FILTER HOUSING AND METHOD AND
APPARATUS FOR MAKING SAME
BACKGROUND OF THE INVENTION
1. FIELD OF THE INVENTION
The present invention relates to the field of transmission filters and the manufacture thereof. In particular, the invention is concerned with a preferred transmission filter having a first flange transparent to a laser beam and a second flange opaque to the laser beam and meltable upon exposure thereto. The flanges are in registered, abutting relationship with a laser weld bead at the juncture between the flanges to provide a fluid seal circumscribing the filter.
2. DESCRIPTION OF THE PRIOR ART A prior art fluid filter, such as an oil or transmission filter for a vehicle, includes first and second housing sections each presenting a circumscribing flange composed of synthetic resin material with the housing sections defining a chamber containing filter media. One of the flanges presents an upstanding weld rib that engages the surface of the other flange at a juncture. To join the flanges during manufacture, the flanges are vibration welded by vibrating one of the flanges at a high frequency. This creates heat at the juncture to create a weld bead circumscribing the filter and providing a fluid seal. The edges of the filter media are crimped between the flanges inboard of the weld bead to provide an additional fluid seal.
One of the problems with the prior art is that the edges of the filter media cannot be crimped as tightly as desired because to do so might result in damage to the edges during the vibration welding process. Another problem is that vibration welding process may not allow production rates as high as desired. SUMMARY OF THE INVENTION
The present invention solves the prior art problems discussed above and provides a distinct advance in the state of the art. In particular, the fluid filter, manufacturing apparatus and method hereof enable increased manufacturing rates and provide a higher quality fluid seal. The preferred fluid filter includes first and second housing sections forming an interior chamber with filter media received therein. The housing sections include respective first and second circumscribing flanges composed of synthetic resin material with the first flange composed of material transmissive to laser light and the second flange opaque to laser light and meltable upon exposure thereto. The flanges are in a registered, abutting relationship at a circumscribing juncture. A laser weld bead at the juncture couples the flanges to provide a fluid seal circumscribing the filter.
The preferred filter manufacturing apparatus includes a robot arm, a programmable processor coupled with the arm to control the movement thereof, a laser coupled with the robot arm operable to emit a laser beam, and a fixture to hold the components of the preferred fluid filter. The processor includes programming to operate the robot arm in a manner to direct the laser beam through the first flange onto the second flange along a path circumscribing the filter at the juncture in order to form the laser weld bead thereat in accordance with the preferred method of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a schematic representation illustrating the preferred fluid filter along with the preferred filter manufacturing apparatus in accordance with the present invention;
Fig. 2 is a partial sectional view of the filter of Fig. 1 before formation of a laser weld bead by the apparatus of Fig. 1; and Fig. 3 is a view similar to Fig. 2 after formation of the laser weld bead. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Fig. 1 illustrates preferred fluid filter 10 along with preferred manufacturing apparatus 12 in accordance with the present invention. As further illustrated in Figs. 2 and 3, filter 10 includes first and second housing sections 14 and 16 having respective first and second, circumscribing flanges 18 and 20 extending therefrom, and filter media 22.
First housing section 14 is preferably composed of synthetic resin material transmissive to laser light such as unpigmented, glass-filled, nylon 6/6. Housing section 14 integrally includes housing walls 24 and 26 with first flange 18 extending outwardly from housing wall 26. First flange 18 integrally includes flange wall 28 extending generally transversely from housing wall 26, edge wall 30 extending from the distal edge of flange wall 28 toward second housing section 16, and crimping rib 32 extending from the inboard face of flange wall 28 adjacent housing wall 26. Flange wall 28 also presents weld surface 34 located between edge wall 30 and rib 32.
Second housing section 16 is preferably composed of synthetic resin material opaque to laser light and meltable upon exposure thereto such as black pigmented, glass-filled, nylon 6/6.
Housing section 16 integrally includes housing walls 36 and 38 with second flange 20 extending outwardly from housing wall 38.
Second flange 20 integrally includes flange wall 40 extending generally transversely from housing wall 38, and upstanding weld rib 42 extending from the inboard face of flange wall 40 toward flange wall 28 of first flange 18. The distal end of weld rib 42 presents weld face 44 abutting weld surface 34 of first flange 18 to form circumscribing juncture 46 between flanges
18 and 20.
Flange wall 40 is also configured to present crimping groove 48 complementally configured and positioned to receive crimping rib 32. The edges of filter media 22 are positioned inboard of juncture 46 and crimped between rib 32 and groove 48. Manufacturing apparatus 12 includes robot arm 50, programmable logic controller (PLC) 52, laser 54 and fixture 56. PLC 52 is operable to control the operation and movement of robot arm 50 according to the programming stored therein. Robot arm 50 and PLC 52 are conventional in nature and the programming thereof is well within the skill of the art. Fixture 56 is also conventional of the type used for holding a fluid filter in position during conventional vibration welding.
Laser 54 is preferably a 400 watt neodynium YAG pulse laser for producing a pulsed laser beam. It will also be appreciated that other types of lasers can be used such as a 2000 watt neodynium YAG continuous wave laser. Initially, filter 10 is placed in fixture 56 with flanges 18, 20 in registered, abutting relationship with filter media 22 received within chamber 60 defined by housing walls 24, 26 and 36, 38, and with the edges of the filter media crimped between rib 32 and groove 48 as illustrated in Fig. 2. First housing section 14 is positioned between laser 54 and second housing section 16. In operation, PLC 52 controls robot arm 50 according to the programming in order to direct laser beam 58 emitted from laser 54 toward filter 10. More specifically, PLC 52 directs laser beam 58 through first flange 18, which is transmissive to laser light, onto weld face 44 of second flange 20 at juncture 46 and along the path of juncture 46. Upon exposure to laser beam 58 as it traverses along juncture 46, weld face 44 (opaque to laser light) is heated as is the material adjacent weld surface 34 to form a melt of synthetic resin material.
After completing the closed loop path defined by juncture 46, PLC 52 turns off laser beam 58. The melt of synthetic resin material rapidly cools to form a laser weld bead 62 at juncture 46 circumscribing filter 10 to join flanges 18, 20 and thereby join housing sections 14, 16 to form filter 10. Laser weld bead 62 also forms a continuous fluid seal circumscribing filter 10. As will now be appreciated, the filter, manufacturing apparatus and method of the present invention enable high productivity in the manufacture of fluid filters of the type used for transmission fluid and engine oil. The present invention also allows the joining of housing section 14, 16 without vibration welding thereby enabling a closer crimp of the edges of the filter media for a tighter seal than has been possible in the prior art.
Those skilled in the art will appreciate that the present invention encompasses many variations in the preferred embodiment described herein. For example, different types of lasers can be used and different types of equipment for directing the laser beam. For example, the laser could be held in a fixed position and controlled mirrors could be used to direct laser beam along a prescribed path instead of using the preferred robot arm. Also, there are a wide variety of materials to form the preferred filter that are also subject to laser welding. Having thus described the preferred embodiment of the present invention, the following is claimed as new and desired to be secured by Letters Patent:

Claims

CLAIMS:
1. A fluid filter comprising: a first housing section having a circumscribing first flange composed of synthetic resin material transmissive of laser light; a second housing section having a circumscribing second flange composed of synthetic resin material opaque to laser light and meltable upon exposure thereto; said flanges as being in registered, abutting relationship at a circumscribing juncture, said sections forming an interior chamber; filter received in said chamber; and a laser weld bead at said juncture coupling said flanges and thereby said sections to form said filter and providing a fluid seal circumscribing said filter.
2. The filter of claim 1, said synthetic resin material including glass-filled nylon.
3. The filter of claim 1, said first flange being composed of unpigmented, glass- filled nylon, said second flange being composed of pigmented, glass-filled nylon. 4. The filter of claim 1 , said first housing section and first flange being integrally composed of said synthetic resin material, said second housing section and said second flange being integrally composed of said synthetic resin material.
5. The filter of claim 4, said first flange being composed of unpigmented, glass- filled nylon, said second flange being composed of pigmented, glass-filled nylon.
6. A fluid filter manufacturing apparatus comprising: a robot arm; a programmable processor coupled with said robot arm and operable to control the movement thereof; a laser coupled with said robot arm operable to emit a laser beam; and a fixture configured to hold a fluid filter, the filter including first and second flanges circumscribing respective housing sections with said flanges in registered, abutting relationship at a circumscribing juncture therebetween, with the first flange being composed of synthetic resin material transmissive to said laser beam and the second flange being composed of synthetic resin material opaque to said laser beam and meltable upon exposure thereto, the sections forming a chamber with filter media received therein, said processor including programming to operate said robot arm in a manner to direct said laser beam through the first flange onto the second flange of a filter held by said fixture along a path circumscribing the filter at the juncture in order to form a laser weld bead thereat forming a circumscribing fluid seal and joining the sections to form the filter.
7. The apparatus of claim 6, said processor including a programmable logic controller. 8. The apparatus of claim 6, said laser including a neodynium YAG laser.
9. The apparatus of claim 6, said laser including a pulsed laser.
10. The apparatus of claim 6, said laser including a continuous wave laser.
11. A fluid filter manufacturing method comprising:
(a) placing first and second filter sections of a fluid filter in an abutting relationship, said first section including a circumscribing first flange composed of synthetic resin material transmissive to laser light, said second section including a circumscribing second flange composed of synthetic resin material opaque to laser light and subject to melting upon exposure thereto, said flanges being complementally configured and defining a chamber with filter media therein, step (a) including the step of placing said flanges in an abutting relationship, there being a circumscribing juncture between said flanges;
(b) directing laser light from a source thereof through said first flange onto said second flange at said juncture thereby forming a melt of synthetic resin material at said juncture; and
(c) discontinuing said laser light allowing said melt to solidify in order to join said flanges and thereby join said sections to form said fluid filter and to form a fluid seal circumscribing said filter at said juncture.
12. The method of claim 11 , said synthetic resin material including glass-filled nylon 6/6.
13. The method of claim 11 , said first flange being composed of unpigmented glass- filled nylon 6/6.
14. The method of claim 13, said first section being integrally composed of unpigmented glass-filled nylon 6/6.
15. The method of claim 11 , said second flange being composed of pigmented glass- filled nylon 6/6. 16. The method of claim 15, said second section being integrally composed of pigmented glass-filled nylon 6/6.
17. The method of claim 11, step (b) including the step of directing a laser beam as said laser light from a neodynium YAG laser as said source.
18. The method of claim 11, step (b) including the step of directing a laser beam as said laser light as a pulsed laser beam.
19. The method of claim 11, step (b) including the step of directing a laser beam as said laser light as a continuous wave laser beam.
20. The method of claim 11, step (b) including the step of directing the laser beam as said laser light along a continuous path defined by said juncture. 21. The method of claim 11, there being a laser coupled with a laser shifting mechanism controlled by programmable processor, step (b) including the step of controlling said shifting mechanism according to the programming of said processor to shift said laser in a manner to direct a laser beam as said laser light emitted therefrom along said juncture.
22. The method of claim 21, said processor including a programmable logic controller.
23. The method of claim 21 , said shifting mechanism including a robot arm.
24. The method of claim 21, said laser including a neodynium YAG laser.
25. The method of claim 24, said laser including a pulsed laser.
26. The method of claim 24, said laser including a continuous wave laser. 27. The method of claim 11, said first section being integrally composed of unpigmented synthetic resin material, said second section being integrally composed of pigmented synthetic resin material, step (b) including the step of directing a laser beam as said laser light from a pulsed laser along a path defined by said juncture.
28. The method of claim 27, there being a laser coupled with a laser shifting mechanism controlled by programmable processor, step (b) including the step of controlling said shifting mechanism according to the programming of said processor to shift said laser in a manner to direct said laser beam emitted therefrom along said juncture.
29. The method of claim 28, said laser including a pulsed laser.
30. The method of claim 29, said synthetic resin material including glass-filled nylon 6/6.
31. The method of claim 29, said laser including a continuous wave laser.
32. The method of claim 11, said filter including a transmission filter.
EP99968638A 1998-09-04 1999-09-03 Laser welded transmission filter housing and method and apparatus for making same Withdrawn EP1137472A4 (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
US9908698P 1998-09-04 1998-09-04
US99086P 1998-09-04
DE19848673 1998-10-22
DE19848673 1998-10-22
DE19860357 1998-12-24
DE1998160357 DE19860357B4 (en) 1998-10-22 1998-12-24 Laser welding process for automatic transmission oil filters
US09/387,807 US6193833B1 (en) 1998-09-04 1999-09-01 Method of laser welding transmission filter housing components
PCT/US1999/020323 WO2000013763A1 (en) 1998-09-04 1999-09-03 Laser welded transmission filter housing and method and apparatus for making same
US387807 2003-03-12

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EP1137472A4 true EP1137472A4 (en) 2004-05-26

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WO (1) WO2000013763A1 (en)

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DE19924469A1 (en) * 1999-05-28 2000-11-30 Bielomatik Leuze & Co Holder for plastic workpieces during laser welding, has clamping faces with individually adjustable adjacent surfaces around the welding area which move transverse to the welding plane
DE10206261B4 (en) * 2002-02-15 2013-01-17 Sartorius Stedim Biotech Gmbh Filter unit with a laser beam welding connection and method for its production
JP2006500523A (en) * 2002-09-19 2006-01-05 マン ウント フンメル ゲゼルシャフト ミット ベシュレンクテル ハフツング Plastic transmission filter
DE10301353A1 (en) * 2003-01-16 2004-07-29 Mann + Hummel Gmbh Filter device for filtering a fluid
EP1669126A1 (en) 2004-12-08 2006-06-14 Mann + Hummel ProTec GmbH Sequential Absorption Dessicant Dryer System
US20060219624A1 (en) * 2005-03-29 2006-10-05 Toyota Boshoku Kabushiki Kaisya Filter and manufacturing method therefor
JP2016016345A (en) * 2014-07-07 2016-02-01 株式会社Roki Oil strainer
ITUB20150620A1 (en) * 2015-05-13 2016-11-13 Vincenzo Tagliaferri New process for the production of brooms, brushes or toothbrushes.

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EP1137472A1 (en) 2001-10-04
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WO2000013763A1 (en) 2000-03-16
WO2000013763A9 (en) 2000-09-08

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