ES2253854T3 - Procedimiento de soldadura por laser para filtros de aceite de cajas de cambio automaticas. - Google Patents

Procedimiento de soldadura por laser para filtros de aceite de cajas de cambio automaticas.

Info

Publication number
ES2253854T3
ES2253854T3 ES99120790T ES99120790T ES2253854T3 ES 2253854 T3 ES2253854 T3 ES 2253854T3 ES 99120790 T ES99120790 T ES 99120790T ES 99120790 T ES99120790 T ES 99120790T ES 2253854 T3 ES2253854 T3 ES 2253854T3
Authority
ES
Spain
Prior art keywords
filter
laser
shells
welding
shell
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.)
Expired - Lifetime
Application number
ES99120790T
Other languages
English (en)
Inventor
Bernhard Beer
Markus Beer
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.)
ISE INTEX GmbH
IBS Filtran GmbH
Filtran LLC
Original Assignee
ISE INTEX GmbH
IBS Filtran GmbH
SPX Filtran LLC
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/de
Application filed by ISE INTEX GmbH, IBS Filtran GmbH, SPX Filtran LLC filed Critical ISE INTEX GmbH
Application granted granted Critical
Publication of ES2253854T3 publication Critical patent/ES2253854T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C65/1635—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
    • 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
    • B29C65/1677—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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • 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
    • B29C66/50—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
    • B29C66/70—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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81266—Optical properties, e.g. transparency, reflectivity
    • B29C66/81267—Transparent to electromagnetic radiation, e.g. to visible light
    • 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
    • B29C66/814—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 design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81425—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being stepped, e.g. comprising a shoulder
    • 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
    • B29C66/814—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 design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • 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
    • B29C65/06—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
    • B29C65/0609—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 characterised by the movement of the parts to be joined
    • B29C65/0636—Orbital
    • 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
    • B29C65/14—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
    • B29C65/1674—Laser beams characterised by the way of heating the interface making use of laser diodes
    • 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
    • B29C66/80—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
    • 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
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    • 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
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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)
  • General Details Of Gearings (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Un procedimiento para la soldadura mediante láser de dos semicarcasas (1, 2) de un filtro hechas de plástico y utilizadas en filtros de aceite para transmisiones automáticas, caracterizado porque dos semicarcasas (1, 2) de un filtro se sitúan superpuestas dentro de un útil (6, 7), cuyos elementos (6, 7) definen conjuntamente una cavidad, destinada a recibir las dos semicarcasas del filtro, la cual se corresponde esencialmente con el contorno tridimensional de dichas semicarcasas del filtro superpuestas, y las semicarcasas del filtro son soldadas a lo largo de sus márgenes comunes utilizando luz de láser, estando una semicarcasa (1) del filtro compuesta de plástico transparente al láser y la otra semicarcasa (2) de plástico opaco al láser, y siendo el rayo láser (8) guiado a través de la semicarcasa (1) del filtro transparente al láser a lo largo de la posición de contacto con la otra semicarcasa del filtro, incidiendo sobre la semicarcasa (2) del filtro opaca al láser, causando la absorciónde luz por el material plástico opaco al láser la cofusión de las dos semicarcasas del filtro dentro de la zona de soldadura (4), siendo la zona del útil a través de la cual es guiado el rayo láser transparente a luz de láser, y porque durante la soldadura se mantiene sobre las semicarcasas (1, 2) del filtro, por medio del útil de recepción (7) y/o del útil de fijación (6), una determinada presión de contacto mutuo.

Description

Procedimiento de soldadura por láser para filtros de aceite de cajas de cambio automáticas.
Esta invención se refiere a un procedimiento para soldar mediante láser las dos semicarcasas de un filtro, hechas de plástico y utilizadas en filtros de aceite para transmisiones automáticas.
De acuerdo con el estado de la técnica, el procedimiento de producción de filtros de aceite para transmisiones automáticas puede dividirse básicamente en dos grupos. En un procedimiento de producción, los filtros de aceite para transmisiones automáticas están diseñados según una construcción mixta, compuesta de dos semicarcasas fabricadas en diferente material, una de plástico y otra de metal. El medio filtrante queda retenido entre las dos semicarcasas. Seguidamente, la semicarcasa metálica se fija con un ajuste relativo a lo largo de la zona marginal alrededor de la semicarcasa de plástico mediante plegado de sus bordes. A causa de los diferentes materiales, son considerables los esfuerzos bajo condiciones térmicas para lograr una funcionalidad con respecto a la estanqueidad y estabilidad dimensional durante la vida útil del filtro.
En el segundo procedimiento de producción, los filtros de aceite para transmisiones automáticas se fabrican únicamente de plástico. El medio filtrante queda retenido entre las dos semicarcasas (o semicoquillas del filtro), y las dos semicarcasas del filtro se unen mediante soldadura, a través de la cual las dos semicarcasas del filtro en un procedimiento de soldadura por fricción se frotan entre sí hasta que se produce la fusión del material plástico en la zona de contacto próxima al borde, y las carcasas quedan soldadas mediante aplicación de una fuerza de compresión. De acuerdo con el estado de la técnica, se utilizan distintas variantes del procedimiento de soldadura, en particular soldadura por fricción vibratoria, soldadura por fricción vibratoria orbital, soldadura por fricción vibratoria circular, o soldadura por ultrasonido (ver patentes US- A-5049274 y DE-A-19610414).
Los inconvenientes de estos procedimientos son unos bajos índices de producción, problemas con respecto a la estanqueidad, y aglomeración circular del medio filtrante a lo largo de todo el borde de ambas semicarcasas del filtro. Además, los procedimientos de soldadura antes descritos son procedimientos de soldadura abrasivos. En consecuencia, se produce una merma de masa lateral durante la soldadura, y la abrasión producida debe tenerse en cuenta en la construcción de filtros de aceite de transmisión, ya que de lo contrario aparecerán fugas. La presente invención proporciona, por tanto, un procedimiento de soldadura no abrasivo mejorado para filtros de aceite de transmisión hechos completamente de plástico.
Así, el objetivo técnico de la invención es proporcionar un nuevo procedimiento para fabricar filtros de aceite para transmisiones automáticas hechos de plástico, cuyo procedimiento evitaría los inconvenientes antes descritos.
Dicho objetivo técnico se logra de acuerdo con las características de la reivindicación 1.
Este procedimiento evita los inconvenientes de los procedimientos del estado de la técnica. Al utilizar un diseño adecuado del filtro de aceite de transmisiones automáticas para ser soldado mediante láser, es posible alcanzar elevados índices de producción, cumpliendo los requisitos de estanqueidad, y también, en particular, de limpieza dentro de la zona de unión. El rayo láser define con alta precisión la zona de fusión en la arista de soldadura 4 entre las dos semicarcasas 1 y 2 del filtro. En consecuencia, la merma lateral de soldadura es muy baja. Esta es una ventaja clara frente a la merma lateral de soldadura en el procedimiento de soldadura vibratoria, en el cual algunas veces es muy considerable.
En un procedimiento preferible, se inserta un material de filtro 3 entre las semicarcasas 1 y 2 del filtro antes de unirlas, cuyo material de filtro en una forma particularmente preferible queda retenido entre las dos semicarcasas 1 y 2 del filtro por medio de un nervio de retención 5. Tanto un filtro tipo bolsa como un filtro monocapa se pueden utilizar como elemento filtrante 3.
El procedimiento se realiza de forma que el margen a ser soldado en una disposición circunferencial, en la que las dos semicarcasas 1 y 2 del filtro contactan entre sí, queda expuesto a una presión en una disposición circunferencial a lo largo del contorno de los componentes. En una forma particularmente preferible, se mantiene una presión de contacto definida sobre las semicarcasas 1 y 2 del filtro a través del útil inferior 7 o el útil superior 6 durante el procedimiento.
De acuerdo con la invención, la zona del útil a través de la cual el rayo láser es guiado, es transparente a luz de láser.
En un procedimiento particularmente preferible, se utiliza un láser seleccionado dentro del grupo del láser YAG de neodimio por impulsos, láser YAG de neodimio por onda continua y láser de diodo, para la soldadura por láser.
Es preferible utilizar unas semicarcasas del filtro realizadas del mismo material plástico, siendo la única diferencia su contenido en pigmento.
El filtro de aceite para transmisión automática fabricado según el procedimiento de soldadura mediante láser de acuerdo con la invención, se compone de dos medias carcasas 1 y 2 que, cuando se unen, determinan un espacio interior. Un medio filtrante 3 de cualquier tipo está retenido en dicho espacio interior, de forma que cumpla los requisitos prácticos propios de tales componentes. Para la utilización del procedimiento de soldadura mediante láser de la invención, el rayo láser 8 debe ser guiado a través del material de la semicarcasa 1 del filtro hasta la zona de soldadura 4. Por tanto, esa semicarcasa 1 del filtro debe estar compuesta de plástico transparente al láser. Para hacer que el láser 8 surta efecto sobre la zona de soldadura 4, la energía del rayo láser debe ser absorbida por el material plástico en esa zona. Esto se logra incluyendo una pigmentación absorbente de la luz de láser en el material plástico de la segunda semicarcasa 2 del filtro, de forma que se produzca la absorción de la luz de láser. Las pestañas de las dos semicarcasas del filtro están diseñadas para que hagan contacto facial, y un rayo láser 8 es guiado a lo largo de esa posición de contacto, cuyo rayo láser, como consecuencia de la absorción de luz por la semicarcasa 2 del filtro, ocasiona la fusión y así se unen (co-funden) las dos semicarcasas 1 y 2 del filtro.
El procedimiento de acuerdo con la invención se describirá a título de ejemplo con referencia a las Figuras 1 y 2.
La Figura 1 es una vista lateral en sección del útil durante el procedimiento de soldadura mediante láser.
La Figura 2 es una vista lateral en sección del útil durante el procedimiento de soldadura mediante láser.
La Figura 1 representa una vista lateral en sección del útil durante el procedimiento de soldadura mediante láser. Ambas semicarcasas 1 y 2 del filtro están acomodadas dentro del útil 6 y 7, y el medio filtrante 3, un filtro tipo bolsa en este caso, está retenido entre las dos semicarcasas.
La misma vista que en la Figura 1 se representa en la Figura 2. En este caso, sin embargo, como medio filtrante 3 está retenido un filtro monocapa entre las dos semicarcasas 1 y 2 del filtro.
La carcasa superior 1 del filtro está compuesta de plástico transparente al láser, y la carcasa inferior 2 del filtro está compuesta de un material absorbente de la luz de láser. Entre esas dos carcasas 1 y 2 del filtro, queda retenido en posición un medio filtrante 3 mediante un nervio de retención 5. En la Figura 1, dicho medio filtrante 3 es un filtro tipo bolsa, mientras que en la Figura 2 el medio filtrante es un filtro monocapa. Para proporcionar la soldadura mediante láser de tales filtros de aceite para transmisiones automáticas, los márgenes a ser soldados en una disposición circunferencial se comprimen entre sí, total o parcialmente, y al mismo nivel en una disposición circunferencial a lo largo del contorno de los componentes. Por tanto, como consecuencia del diseño del útil de fijación 6 y útil de recepción 7, la zona de soldadura 4 se comprime de una forma controlada. Durante la etapa de soldadura mediante láser, se mantiene una constante presión de contacto entre el útil superior 6 e inferior 7, cuya presión depende del contorno del filtro, del material y de la distorsión de los componentes. Para permitir el acceso del rayo láser 8 a la zona de soldadura 4 en esta realización, el útil superior 6 debe estar compuesto en esa zona de material transparente a luz de láser.
Dependiendo del tipo y diseño del medio filtrante, será necesario realizar un ajuste entre nervio de retención 5, medio filtrante 3 y zona de soldadura 4. Es decir, la situación de retención final del medio filtrante propia de la condición soldada, se logra ya durante el montaje previo, por ejemplo durante la compresión entre las carcasas 1 y 2 del filtro. La razón para ello es que la soldadura mediante láser no es una soldadura abrasiva, como sucede, por ejemplo, en la soldadura vibratoria.
El único requisito para que la soldadura mediante láser sea operativa es que se produzca un contacto circunferencial preciso y ajustado entre ambas semicarcasas 1 y 2 del filtro. La absorción de radiación láser por la carcasa inferior 2 del filtro provoca el calentamiento del material plástico hasta la temperatura de fusión, y la temperatura del material fundido causa que la carcasa superior 1 del filtro experimente también una fusión y, por tanto, una co-fusión homogénea de los materiales. De esta manera, se logra una bien definida arista de soldadura circunferencialmente homogénea de las dos semicarcasas del filtro a lo largo de la zona de soldadura 4. Dado que los materiales de base, tanto de la carcasa superior 1 del filtro como la carcasa inferior 2 del filtro, son idénticos, diferenciándose solamente en su coloración, se cumplen las condiciones iniciales óptimas para una unión soldada duradera y permanentemente estanca.
Lista de referencias
1
Carcasa superior del filtro
2
Carcasa inferior del filtro
3
Medio filtrante
4
Zona de soldadura
5
Nervio de retención
6
Útil superior de fijación
7
Útil inferior de recepción
8
Rayo láser

Claims (6)

1. Un procedimiento para la soldadura mediante láser de dos semicarcasas (1,2) de un filtro hechas de plástico y utilizadas en filtros de aceite para transmisiones automáticas, caracterizado porque dos semicarcasas (1,2) de un filtro se sitúan superpuestas dentro de un útil (6,7), cuyos elementos (6,7) definen conjuntamente una cavidad, destinada a recibir las dos semicarcasas del filtro, la cual se corresponde esencialmente con el contorno tridimensional de dichas semicarcasas del filtro superpuestas, y las semicarcasas del filtro son soldadas a lo largo de sus márgenes comunes utilizando luz de láser, estando una semicarcasa (1) del filtro compuesta de plástico transparente al láser y la otra semicarcasa (2) de plástico opaco al láser, y siendo el rayo láser (8) guiado a través de la semicarcasa (1) del filtro transparente al láser a lo largo de la posición de contacto con la otra semicarcasa del filtro, incidiendo sobre la semicarcasa (2) del filtro opaca al láser, causando la absorción de luz por el material plástico opaco al láser la co-fusión de las dos semicarcasas del filtro dentro de la zona de soldadura (4), siendo la zona del útil a través de la cual es guiado el rayo láser transparente a luz de láser, y porque durante la soldadura se mantiene sobre las semicarcasas (1,2) del filtro, por medio del útil de recepción (7) y/o del útil de fijación (6), una determinada presión de contacto mutuo.
2. El procedimiento según la reivindicación 1, caracterizado porque antes de unir las semicarcasas (1,2) del filtro, se inserta entre ellas un medio filtrante (3).
3. El procedimiento según la reivindicación 2, caracterizado porque el medio filtrante queda retenido en posición mediante un nervio de retención (5).
4. El procedimiento según la reivindicación 2 ó 3, caracterizado porque como medio filtrante (3) se utiliza un filtro tipo bolsa o un filtro monocapa.
5. El procedimiento según las reivindicaciones 1 a 4, caracterizado porque los márgenes a ser soldados se mantienen reunidos mediante presión a lo largo de su perímetro total o parcial.
6. El procedimiento según las reivindicaciones 1 a 5, caracterizado porque se utiliza un láser seleccionado dentro del grupo del láser YAG de neodimio por impulsos, láser YAG de neodimio por onda continua y láser de diodo, en el procedimiento de soldadura mediante láser.
ES99120790T 1998-10-22 1999-10-20 Procedimiento de soldadura por laser para filtros de aceite de cajas de cambio automaticas. Expired - Lifetime ES2253854T3 (es)

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DE1998160357 DE19860357B4 (de) 1998-10-22 1998-12-24 Laserschweißverfahren für Automatikgetriebeölfilter
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DE10037856A1 (de) 2000-08-01 2002-02-14 Ibs Filtran Kunststoff Metall Ölbehälter und Verfahren zu seiner Herstellung
FR2815286B1 (fr) * 2000-10-16 2003-06-20 Cera Dispositif pour fixer un revetement sur un support en matiere plastique
US6890366B2 (en) * 2003-04-17 2005-05-10 Visteon Global Technologies, Inc. Sealed engine air filter system
EP1700684B1 (de) * 2005-03-11 2012-06-20 MANN+HUMMEL GmbH Verfahren zur Herstellung einer dichten Verbindung zwischen einem mehrschichtigen Kunststoffmaterial und einem Filtermedium
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