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WO2014013989A1 - Organe femelle pour systèmes d'accouplement - Google Patents

Organe femelle pour systèmes d'accouplement Download PDF

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Publication number
WO2014013989A1
WO2014013989A1 PCT/JP2013/069301 JP2013069301W WO2014013989A1 WO 2014013989 A1 WO2014013989 A1 WO 2014013989A1 JP 2013069301 W JP2013069301 W JP 2013069301W WO 2014013989 A1 WO2014013989 A1 WO 2014013989A1
Authority
WO
WIPO (PCT)
Prior art keywords
female member
diameter
joints
tube
cylindrical body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2013/069301
Other languages
English (en)
Japanese (ja)
Inventor
今村　均
英樹 河野
助川　勝通
安行 山口
青山　高久
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of WO2014013989A1 publication Critical patent/WO2014013989A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
    • 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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/561—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using screw-threads being integral at least to one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1228—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least one monotone curved joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1288—Stepped joint cross-sections comprising at least one monotone curved joint-segment
    • B29C66/12881—Stepped joint cross-sections comprising at least one monotone curved joint-segment comprising at least two monotone curved joint-segments
    • 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
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52298—Joining tubular articles involving the use of a socket said socket being composed by several elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/04—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection
    • F16L19/041—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection the ring being an insert
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/04—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with a swivel nut or collar engaging the pipe
    • F16L47/041—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with a swivel nut or collar engaging the pipe the plastic pipe end being flared either before or during the making of the connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—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
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
    • 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
    • B29C66/12461—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being rounded, i.e. U-shaped or C-shaped
    • 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
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    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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
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    • B29C66/128—Stepped joint cross-sections
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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
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    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • B29C66/636—Internally supporting the article during joining using a support which remains in the joined object
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B29C66/7311—Thermal properties
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B29C66/7316—Surface properties
    • B29C66/73161—Roughness or rugosity

Definitions

  • the present invention relates to a female member for joints. More specifically, female molds used in joints used for transporting chemicals used in semiconductor manufacturing plants, liquid crystal manufacturing plants, chemical plants, and liquids that require non-adhesiveness and heat resistance. It relates to members.
  • pipes with a large amount of liquid transfer such as chemicals have an outer diameter of more than 1.5 inches, preferably an inner diameter of 1.5 inches or more, A large diameter was sometimes required.
  • large-diameter pipes are excellent in strength, so metal lining pipes that are made of resin pipes with excellent chemical resistance such as made of fluororesin are often used inside metal pipes.
  • the ends of the resin tubes of both pipes to be connected are flared, the flared portions of the resin tubes are sandwiched between the flanges provided at the ends of the metal pipes, and the flanges are fixed with metal bolts. The joining method is adopted.
  • the resin is also required to have the same chemical resistance as the resin used for the pipe for transferring the chemical solution.
  • polyethylene, polypropylene, etc. have been used as resins for forming joints used for connecting large-diameter pipes because of their excellent chemical resistance, elasticity, creep resistance, good moldability, and low cost.
  • materials that are more excellent in chemical resistance and heat resistance since the demand for applications that are used in harsher environments is expanding, it is required to use materials that are more excellent in chemical resistance and heat resistance.
  • PTFE Tetrafluoroethylene
  • TFE tetrafluoroethylene
  • HFP alkyl vinyl ether
  • FEP hexafluoropropylene
  • FEP ethylene / TFE copolymer
  • Fluorine resins such as coalescence [ETFE], polyvinylidene fluoride [PVDF], polychlorotrifluoroethylene [PCTFE] and the like are attracting attention.
  • PFA, ETFE, and PVDF are excellent in moldability, and PFA is excellent in chemical resistance.
  • a hollow joint body including a tube connecting portion and a screwing portion, and a screwing hole are formed inside, and a contact surface is provided at one end of the screwing hole.
  • a resin tube joint is disclosed that includes a connection nut in which a reduced diameter portion is formed, and a fixing ring that is fitted into the connection nut and is in contact with the contact surface (for example, a patent) Reference 1).
  • Patent Document 1 describes that with the above-described configuration, deformation of the connecting nut at the time of connection can be suppressed, and leakage of liquid in the tube can be prevented.
  • a joint of 1/4 to 1 inch size is described. Is disclosed.
  • a receptacle at one end for a resin pipe joint structure that is suitable for piping of high-purity liquid and ultrapure water used in manufacturing processes such as semiconductor manufacturing, medical / pharmaceutical manufacturing, food processing, and chemical industry.
  • a joint body provided with a male screw on the outer periphery of the receiving port; a female screw that is loosely fitted on the outer periphery of the resin tube; and is screwed onto the male screw of the joint body on the inner circumference;
  • a resin pipe joint structure provided with a nut having an annular flange projecting inward, a pressing ring of a specific material and shape is provided between the expanded diameter portion of the tube and the inner surface of the flange of the nut.
  • Patent Document 2 the above configuration can sufficiently exhibit the tube retaining function and the sealing function even when a mechanical abnormal pulling force other than the abnormal fluid pressure and internal pressure is applied, thereby ensuring safety. The effect is described.
  • the joints for large-diameter pipes are joints for small-diameter pipes having a structure as described in Patent Documents 1 and 2. It can be manufactured by simply scaling up.
  • PFA that is frequently used in chemical pipes in semiconductor and liquid crystal manufacturing factories
  • the female member in the joint includes a cylindrical body having a cylindrical through hole, and an annular inward flange projecting radially inward from the inner peripheral surface of the cylindrical body at one end of the through hole.
  • the present invention has been made in view of the above situation, and has an object to provide a female member for joints that is excellent in moldability, crack resistance, and sealing characteristics and is suitable for joints of large-diameter pipes. To do.
  • the thickness of the member can be reduced, it is possible to perform molding by injection molding which is advantageous in terms of cost, and thus the production cost can be reduced.
  • the present inventor has also demonstrated excellent sealing characteristics and strength even in a severe chemical solution environment such as a high temperature when such a female member is applied to a joint for chemical solution piping in a semiconductor or liquid crystal manufacturing factory. As a result, cold flow (creep) can be sufficiently suppressed, and as a result, it has been found that the liquid tightness (seal characteristics) inside the pipe can be sufficiently maintained by the joints, and the present invention has been achieved.
  • the present invention is a female member that can be connected to a male member in a joint, and includes a cylindrical body having a cylindrical through hole, and a radially inner side from an inner peripheral surface of the cylindrical body at one end of the through hole.
  • a ring-shaped inwardly extending flange portion and a female screw portion provided on the inner peripheral surface of the cylindrical body, the cylindrical body having a radial thickness of 5 to 20 mm, and the inwardly extending flange portion in the axial direction.
  • Thickness is 5 to 20 mm
  • diameter of the through-hole formed by the inward flange is 40 mm or more
  • the fluorine-containing polymer comprises 3.0 to 7.0% by mass of polymer units based on perfluoro (alkyl vinyl ether) based on the total polymer units, and the melt flow rate is 4.5.
  • ⁇ 15 A female member for fittings, which is a 0 g / 10 min.
  • the female member for joints of the present invention is preferably obtained by injection molding.
  • the perfluoro (alkyl vinyl ether) is preferably perfluoro (propyl vinyl ether).
  • the fluoropolymer preferably has a melting point of 295 to 320 ° C.
  • the female member for joints of the present invention preferably has a restoration rate at 85 ° C. of 4.5% or more.
  • the female member for a joint according to the present invention is preferably a nut for a mechanical joint.
  • the female member for joints of the present invention is a size that can be applied to large joints connecting large-diameter pipes and is relatively thin, it can be formed by injection molding that is advantageous in terms of cost. it can. In addition, it is excellent in crack resistance and sealing properties despite being thin, so that it can exhibit excellent sealing properties and strength even under severe chemical liquid environments such as high temperatures and sufficiently suppress cold flow (creep). As a result, the liquid tightness (seal characteristics) inside the pipe can be sufficiently maintained by the joints using the female member for joints.
  • FIG. 1 is a cross-sectional view schematically showing how the female member for joints of the present invention is used.
  • FIG. 2 is a partially cutaway front perspective view showing an embodiment of the female member for joints of the present invention.
  • FIG. 3 is a partially cutaway rear perspective view showing an embodiment of the female member for joints of the present invention.
  • 4 is a cross-sectional view taken along line AA of the female member for joints shown in FIG.
  • FIG. 5 is a cross-sectional view schematically showing another example of usage of the female member for joints of the present invention.
  • FIG. 1 is a cross-sectional view schematically showing how the female member for joints of the present invention (hereinafter also referred to as the female member of the present invention) is used.
  • FIG. 2 is a partially cutaway front perspective view showing an embodiment of the female member of the present invention, that is, a partially cutaway perspective view seen from the side where the inward flange is provided.
  • FIG. 3 is a partially cutaway rear perspective view showing an embodiment of the female member of the present invention, that is, a partially cutaway perspective view seen from the side where the female thread portion is provided.
  • 4 is a cross-sectional view of the female member shown in FIG. 2 along the line AA.
  • FIG. 5 is a cross-sectional view schematically showing another example of usage of the female member of the present invention.
  • the female member for joints of the present invention can be connected to a male member in the joints.
  • the female member of the present invention is a nut for a mechanical joint, as shown in FIG. 1, the nut 1 corresponding to the female member of the present invention is connected to the joint body 2 corresponding to the male member. Used to connect and fix the tube 3 for transferring a liquid such as a chemical solution.
  • the nut 1 includes a cylindrical body 11 having a cylindrical through hole, and an annular inner end projecting radially inward from the inner peripheral surface 14 of the cylindrical body 11 at one end of the through hole. It has a facing flange portion 12 and a female screw portion 13 provided on the inner peripheral surface 14 of the cylindrical body 11.
  • the inward flange portion 12 is formed integrally with the cylindrical body 11 so as to protrude substantially perpendicular to the inner peripheral surface 14 of the cylindrical body 11.
  • the cylindrical body 11 has a radial thickness a of 5 to 20 mm, the inward flange portion 12 has an axial thickness b of 5 to 20 mm, and the through hole formed by the inward flange portion 12 has a diameter c of 40 mm or more.
  • the nut 1 is made of a specific fluoropolymer described later.
  • the joint body 2 has a through-hole through which liquid can flow, and further includes a tube connecting portion 21 for connecting the tube 3 and a male screw portion 22.
  • the joint body 2 is made of a fluororesin having excellent chemical resistance.
  • the tube 3 is a large-diameter tube having an inner diameter of 38.1 mm (1.5 inches) or more, an outer diameter of more than 38.1 mm (1.5 inches), and less than the diameter c of the through hole, It is made of a material having excellent chemical resistance and appropriate flexibility, such as a fluororesin.
  • the tube 3 is inserted into a through hole formed by the inward flange portion 12 of the nut 1, and one end of the tube 3 on the female screw portion 13 side with respect to the inward flange portion 12 is The enlarged diameter portion 31 is formed by fitting into the tube connecting portion 21 of the joint body 2, and the male thread portion 22 of the joint body 2 is screwed into the female thread portion 13 of the nut 1.
  • the tube 3 is firmly fixed by the inward flange portion 12 of the nut 1 and the tube connecting portion 21 of the joint body 2, the liquid flowing through the tube 3 and the joint body 2 is exposed to the outside. Leakage can be prevented.
  • the stress generated when the nut 1 is tightened and under severe use environment is such that the inward flange portion 12 and the cylindrical body 11 on the side to which the joint main body 2 is connected (the side on which the female screw portion 13 is provided). Concentrate at the intersection 15 with the inner peripheral surface 14.
  • the nut 1 is made of a specific fluoropolymer to be described later and has excellent crack resistance, so that it is possible to effectively prevent the occurrence of cracks especially at the intersection even though it is thin. Moreover, since it is thin, it can shape
  • the usage mode of the female member of the present invention is not limited to the above-described mode. As examples of other usage modes of the female member of the present invention, modes (a) to (d) are shown in FIG.
  • the inner ring 4 is inserted into one end of the tube 3 to form an enlarged diameter portion 31, and the enlarged diameter portion 31 is externally fitted to the tube 3, and the nut 1
  • the tube 3 is prevented from coming off by being fixed via the inner ring 4 by the joint body 2 screwed into the tube.
  • the inner ring 4 having a shape different from that in the aspect (a) is used.
  • the inner ring 4 in the aspect (b) can be joined to the joint body 2 and has a bulging portion 41.
  • the tube 3 is connected to the bulging part 41 which the inner ring 4 has, and the enlarged diameter part 31 is formed in one end.
  • the shape of the joining location of the inner ring 4 and the joint body 2 is different from that in the aspect (b).
  • the end of the tube 3 is folded outward so as to cover one end of the ferrule 5 fitted on the tube 3.
  • the folded portion of the tube 3 is fixed via a ferrule 5 by the joint body 2 and the nut 1 screwed into the joint body 2.
  • position members such as an O-ring externally fitted by the tube 3, inside the inward flange part 12 of the nut 1 as needed.
  • the usage mode of the female member of the present invention is not limited to the specific examples described above.
  • the cylinder has a cylindrical through hole.
  • the cylindrical body has a cylindrical inner peripheral surface.
  • a female screw structure can be provided on the inner peripheral surface, and it is possible to connect to a male member having a male screw structure.
  • Cylindrical means a shape having a substantially circular cross section.
  • the cylindrical body has a radial thickness of 5 to 20 mm. If the thickness of the cylindrical body in the radial direction is too thick, molding by injection molding may be difficult, and if it is too thin, sufficient strength cannot be secured and high crack resistance may not be realized.
  • the thickness in the radial direction of the cylinder is preferably 7 to 20 mm, more preferably 8 to 13 mm. The thickness of the cylindrical body in the radial direction corresponds to a shown in FIG.
  • the inner diameter of the cylindrical body may be appropriately determined in consideration of the outer diameter of the pipe to be used, but is preferably 2 to 40 mm larger than the outer diameter of the tube to be used, and more preferably 5 to 20 mm larger.
  • the cylindrical body may have a constant inner diameter from one end to the other end, and the inner diameter may be different depending on the site like a tapered structure, but has a constant inner diameter in terms of excellent formability. It is preferable.
  • the shape of the outer peripheral surface of the cylindrical body is not limited and may be cylindrical, and the outer peripheral shape of the cross section of the cylindrical body is a polygonal shape such as a hexagon (for example, shown in FIGS. 2 and 3). Shape) or other shapes. Among these, a prismatic shape is preferable in that it can be easily tightened with a tool when the female member of the present invention is connected to the male member.
  • step difference, etc. may be provided in the outer peripheral surface of the said cylinder.
  • a flange that protrudes radially outward from the outer peripheral surface of the cylinder may be provided.
  • the length of the cylindrical body in the axial direction is not limited as long as the pipe can be firmly fixed by the female member and the male member, and may be appropriately determined depending on the application.
  • the outer diameter of the tube is preferably 0.5 to 2 times, more preferably 0.7 to 1.5 times.
  • the inward flange portion protrudes radially inward from the inner peripheral surface of the cylindrical body at one end of the through hole of the cylindrical body, and is an annular shape substantially concentric with the through hole of the cylindrical body. It is what has.
  • the inward flange portion protrudes substantially perpendicular to the inner peripheral surface of the cylindrical body.
  • Such a shape is a shape in which cracks are particularly likely to occur at the intersection between the inward flange portion and the inner peripheral surface of the cylindrical body on the side where the female screw portion is provided. Is unlikely to occur.
  • the inward flange has an axial thickness of 5 to 20 mm. If the axial thickness of the inward flange is too thick, molding by injection molding may be difficult, and if it is too thin, sufficient strength cannot be secured and high crack resistance may not be realized.
  • the axial thickness of the inward flange is preferably 7 to 20 mm, more preferably 9 to 15 mm. The axial thickness of the inward flange corresponds to b shown in FIG.
  • the diameter of the through hole formed by the inward flange is 40 mm or more.
  • a tube for transferring a liquid such as a chemical solution is inserted into the through hole formed by the inward flange.
  • the diameter of the through-hole formed by the inward flange portion is too small, it cannot be applied to a large-diameter pipe. If the diameter is within the above range, it can be applied to a large-diameter pipe having an outer diameter of more than 1.5 inches (38.1 mm), preferably an inner diameter of 1.5 inches or more.
  • the diameter of the said through-hole should just be suitably determined within the said range based on the outer diameter of piping to be used, when it is larger than the outer diameter of a tube, there exists a possibility that it may become difficult to hold
  • the diameter of the through hole is preferably 0.1 to 5 mm larger than the outer diameter of the tube used, and more preferably 0.3 to 2 mm larger.
  • the diameter of the through-hole formed by the inward flange portion may be, for example, 50 mm or more, 50.8 mm or more, and more than 50.8 mm (especially an outer diameter of 2 inches (50.8 mm)).
  • the diameter of the through hole may be 100 mm or more, 101.6 mm or more, or more than 101.6 mm (especially suitable for a tube having an outer diameter of 4 inches (101.6 mm)). Good.
  • the upper limit of the diameter of the through hole formed by the inward flange is not particularly limited, but may be 140 mm or 137 mm applicable to a tube having an inner diameter of 5 inches and a thickness of 5 mm, for example. If the diameter exceeds the above upper limit, it can be used as a joint for a short tube pipe with a length of about 1 m.
  • the diameter of the through hole formed by the inward flange portion corresponds to c shown in FIG.
  • the angle formed by the inward flange and the inner peripheral surface of the cylinder is approximately 90 °.
  • About 90 ° is specifically 60 to 150 °.
  • the angle formed is preferably 75 to 120 °, more preferably 90 °.
  • the inward flange portion is preferably formed integrally with the cylindrical body. As a result, the female member is more excellent in strength.
  • the axial thickness of the inward flange portion may be constant, or may vary depending on the site like a tapered structure, but is preferably constant in terms of excellent formability.
  • the ratio between the radial thickness of the cylindrical body and the axial thickness of the inward flange is preferably 50/100 to 120/100 from the viewpoint of excellent injection moldability.
  • the ratio is more preferably 70/100 to 100/100.
  • the female thread portion in the female member of the present invention is a part provided on the inner peripheral surface of the cylindrical body and having a female thread structure.
  • the female member and the male member can be connected by screwing the female screw portion with the male screw portion of the male member and fastening the female member.
  • the female thread portion is preferably provided on the inner peripheral surface of the cylindrical body at one end of the through hole of the cylindrical body on the side opposite to the inward flange portion. Further, the female screw portion may be provided on the entire inner peripheral surface of the cylinder inside the inward flange portion, or a female screw structure is provided on the inner peripheral surface of the cylinder body between the inward flange portion and the female screw portion. A smooth portion that is not provided may be provided.
  • the female member of the present invention has the above-described shape and size, and is a relatively large member that can be externally fitted to a large-diameter pipe, but is relatively thin, which is advantageous in terms of cost. Even when molded by injection molding, defects such as surface roughness, sink marks, warpage, and short shots are unlikely to occur.
  • the female member of the present invention comprises a fluoropolymer [PFA] having polymerized units based on tetrafluoroethylene [TFE] and polymerized units based on one or more types of perfluoro (alkyl vinyl ether) [PAVE]. It is.
  • CF 2 CF-ORf 1 (Wherein Rf 1 represents a perfluoroalkyl group having 1 to 5 carbon atoms) is preferred.
  • PAVE perfluoro (methyl vinyl ether) [PMVE], perfluoro (ethyl vinyl ether) [PEVE], perfluoro (propyl vinyl ether) [PPVE], perfluoro (butyl vinyl ether) and the like. 1 type, or 2 or more types of these can be used.
  • PAVE is advantageous in that the side chain (the site represented by -ORf 1 in the above formula) is longer in terms of improving the sealing characteristics and strength of the obtained female member and suppressing cold flow. The longer the side chain, the more expensive and the manufacturing cost will increase.
  • various types of PAVE can be used, but PPVE is preferably used from the viewpoint described above.
  • the polymerized units based on the PAVE are 3.0 to 7.0% by mass with respect to the total polymerized units.
  • the obtained female member has excellent sealing properties and strength even under severe environments such as high temperatures, and cold flow at high temperatures can be sufficiently suppressed.
  • joints using the female member can maintain sufficient liquid tightness (seal characteristics) of the pipe.
  • the polymerization unit based on the PAVE is preferably 3.5 to 6.5% by mass, and more preferably 4.0 to 6.0% by mass.
  • the content of polymerized units based on PAVE in the fluoropolymer can be measured by 19 F-NMR method.
  • TFE-PAVE copolymers When two or more TFE-PAVE copolymers are used in combination, or when other fluorine-containing polymers such as TFE homopolymer are mixed with TFE-PAVE copolymer, these It is preferable that the content of PAVE units in the mixture is in the above-mentioned range.
  • the content of PAVE units in the above mixture can also be measured by 19 F-NMR method.
  • the fluoropolymer may further include a polymer unit based on a monomer copolymerizable with TFE and PAVE, in addition to a polymer unit based on TFE and a polymer unit based on PAVE.
  • HFP HFP It is preferable that
  • alkyl perfluorovinyl ether derivative those in which Rf 2 is a perfluoroalkyl group having 1 to 3 carbon atoms are preferable, and CF 2 ⁇ CF—OCH 2 —CF 2 CF 3 is more preferable.
  • the polymer units based on monomers copolymerizable with TFE and PAVE are preferably 0 to 10% by mass with respect to the total polymer units. More preferably, it is 0 to 5% by mass. Most preferably, it is 0% by mass, that is, the fluorine-containing polymer is composed only of TFE and PAVE.
  • the fluoropolymer may further contain a fluoropolymer other than those described above (hereinafter also referred to as other fluoropolymers).
  • fluoropolymers include TFE polymers and TFE-HFP copolymers.
  • the content of the other fluoropolymer is preferably 30% by mass or less with respect to the total amount of the fluoropolymer.
  • the fluorine-containing polymer can be obtained by a conventionally known polymerization method such as suspension polymerization, solution polymerization, emulsion polymerization, bulk polymerization and the like.
  • the conditions such as temperature and pressure, the polymerization initiator and other additives can be appropriately set according to the composition and amount of the desired fluoropolymer.
  • the fluoropolymer has a melt flow rate (MFR) of 4.5 to 15.0 g / 10 min.
  • MFR melt flow rate
  • the MFR is preferably 6.0 to 15.0 g / 10 min, and more preferably 7.0 to 14.0 g / 10 min.
  • the said MFR shows the value at the time of implementing on condition of 372 degreeC and a 5-kg load using a melt indexer (made by Toyo Seiki Seisakusho).
  • the fluoropolymer preferably has a melting point of 295 to 320 ° C. More preferably, it is 300 to 310 ° C.
  • the fluoropolymer may have a plurality of melting points.
  • fusing point is calculated
  • the fluorine-containing polymer preferably has a weight average molecular weight of 200,000 to 2,000,000. More preferably, it is 250,000 to 600,000, and more preferably 300,000 to 500,000.
  • the weight average molecular weight can be calculated as follows. That is, using a melt viscoelasticity measuring apparatus MCR-500 (manufactured by Anton Paar), the zero shear viscosity at 340 ° C. of a compression molded sheet having a sample thickness of 0.5 mm is determined. The viscosity is substituted into the zero shear viscosity of the calculation formula (see the following formula) represented by “Macromolecules 1985, 18, 2023-30”, and the weight average molecular weight is calculated.
  • ⁇ 0 2.04 ⁇ 10 ⁇ 12 ⁇ Mw ⁇ 0 : Zero shear viscosity
  • Mw Weight average molecular weight
  • the female member of the present invention may further contain other components other than the fluoropolymer.
  • other components include fillers, plasticizers, pigments, colorants, antioxidants, ultraviolet absorbers, flame retardants, anti-aging agents, antistatic agents, and antibacterial agents.
  • a filler is preferable. If the female member contains a filler, the strength is further improved, so that it can be applied to applications that require a higher tightening pressure, such as joints used under higher pressure conditions.
  • the filler include silica, kaolin, clay, organic clay, talc, mica, alumina, calcium carbonate, calcium terephthalate, titanium oxide, calcium phosphate, calcium fluoride, lithium fluoride, crosslinked polystyrene, potassium titanate, Examples thereof include carbon, boron nitride, carbon nanotube, and glass fiber. Among these, boron nitride is preferable.
  • the female member of the present invention can further contain various additives in addition to the fluoropolymer.
  • the content of the additive is small, and it is most preferable that the additive is not included.
  • the additive is preferably 30% by mass or less based on the female member of the present invention. More preferably, it is 10% by mass or less, and most preferably 0% by mass, that is, no additive is contained. It is one of the preferred embodiments of the present invention that the female member is composed only of the fluoropolymer.
  • the female member of the present invention can be produced by molding the above-mentioned fluoropolymer or a composition for a female member comprising the above-mentioned fluoropolymer and an additive into a desired shape and size. .
  • a method for producing the female member composition a method comprising mixing the powder comprising the fluoropolymer with the additive in a dry manner, or mixing the fluoropolymer and the additive in advance using a mixer, And a kneading method using a kneader or a melt extruder.
  • a method for molding the fluoropolymer or the female member composition is not particularly limited, and examples thereof include an injection molding method, a compression molding method, and a transfer molding method. Among these, the injection molding method is preferable in that the production cost can be reduced. It is one of the preferred embodiments of the present invention that the female member of the present invention is obtained by injection molding.
  • the female member of the present invention has excellent sealing characteristics and strength even under severe environments such as high temperatures.
  • the female member preferably has a recovery rate at 85 ° C. of 4.5% or more.
  • the joints using the female member can sufficiently maintain the liquid-tightness (seal characteristics) of the pipe even in a severe environment such as a high temperature. . More preferably, it is 7% or more.
  • the restoration rate is a value measured at 85 ° C. by a measurement method based on ASTM D395, and will be described in detail later.
  • the female member of the present invention is excellent in characteristics at high temperatures, and thus exhibits particularly excellent effects when used in an environment where the temperature is high.
  • the female member is preferably used in an environment where the maximum temperature is 50 ° C. or higher. More preferably, it is used in an environment where the maximum temperature is 70 ° C. or higher.
  • the female member of the present invention can be used in a harsh environment because it can constitute joints that can maintain the liquid-tightness (seal characteristics) of the piping even in a harsh environment such as a high temperature. It can be applied to joints connecting various pipes. Among them, it is preferable to apply to joints for large-diameter pipes installed in semiconductor and liquid crystal manufacturing factories, and it is particularly preferable to apply to joints for chemical liquid pipes.
  • the female member of the present invention includes joints for connecting a transfer pipe for slurry-containing liquid, a transfer pipe for high-temperature hot spring water in which adhesion of inorganic substances is a concern, a transfer pipe for seawater in which adhesion of marine microorganisms is a concern. It can be suitably applied to.
  • the female member of the present invention can constitute joints together with the male member.
  • the joints are not particularly limited as long as they are pipe joints and have a structure in which a female member and a male member are connected, but a screw-in mechanical joint is preferable.
  • mold member of this invention is a nut for mechanical couplings.
  • the male member is not particularly limited as long as it has a male screw structure that can be screwed into the female screw portion, and a conventionally known structure may be adopted.
  • the material for forming the male member is not particularly limited. However, since it preferably has the same strength and chemical resistance as the female member, fluororesin is preferable, and PTFE and PFA are more preferable. .
  • the outer diameter is smaller than the diameter of the through hole formed by the inward flange portion of the female member. Piping is preferable, and piping having an outer diameter of more than 1.5 inches (38.1 mm) and less than the diameter of the through hole is preferable. More preferably, the pipe has an outer diameter of 2.0 inches (50.8 mm) or more and less than the diameter of the through hole.
  • the female member of the present invention is particularly suitable for joints that connect large-diameter pipes that transfer a large amount of liquid.
  • an internal diameter is 1.5 inches (38.1 mm) or more, and an outer diameter is formed of the said inward flange part.
  • a pipe having a diameter smaller than the diameter of the through hole is more preferable.
  • Particularly preferable is a pipe having an inner diameter of 2.0 inches (50.8 mm) or more and an outer diameter less than the diameter of the through hole.
  • the material for forming the pipe is not particularly limited as long as it has sufficient resistance to the liquid to be transferred and has an appropriate flexibility, but is used in a semiconductor or liquid crystal manufacturing factory.
  • fluororesin is preferable, and PFA is particularly preferable.
  • mold member of this invention mentioned above as a material for forming the said male type
  • the fluoropolymer can be used for valves, pump casings, filter housings and the like.
  • the equipment and measurement conditions used for the evaluation of physical properties are as follows.
  • MFR melt flow rate
  • the restoration rate is expressed as 100%-(compression set).
  • the compression set (compression set) was measured by the method shown in ASTM D395-03 test method-B. A test piece having a size of 13 ⁇ ⁇ 6 mmt was used. Heating and pressing were performed at 85 ° C. for 1000 hours. The compression ratio is 50% (that is, a 6 mm thick sample is compressed to 3 mm). However, in ASTM D395, the test piece is allowed to cool after the sample is removed from the compression jig. However, in the test method employed in this example, the test piece is kept fixed to the compression jig for 3 hours or more at room temperature. After cooling to room temperature, the test piece was removed and the size of the test piece was measured 30 minutes later.
  • PFA AP-231SH (MFR 1.88 g / 10 min) manufactured by Daikin Industries, Ltd. was used as a prototype material for a 2-inch tube, and a tube with an outer diameter of 57.4 mm ⁇ ⁇ inner diameter of 50.8 mm ⁇ (2 Inch tube).
  • a nut having a shape similar to that shown in FIG. 5 of JP-A-2009-144916 was molded using the fluororesin obtained in the synthesis example shown in Table 1 as a material. .
  • the molding conditions were a resin temperature of 365 ° C. and a mold temperature of 150 ° C.
  • the nut has a radial thickness (corresponding to a in FIG. 4) of 9 mm, an axial thickness of the inward flange (thickness corresponding to b in FIG. 4), and an inward flange.
  • the diameter of the through-hole formed by was 58 mm, and the inner diameter of the cylinder was 69 mm.
  • Test method By passing the tube through the nut and PCTFE ring obtained in the examples and comparative examples, connecting one end of the tube to the joint body cut with PTFE, screwing the nut into the joint body, and tightening The tube was fixed to the joint body.
  • a fitting with a tube set is attached to an autograph (manufactured by Shimadzu Corporation) using a dedicated metal jig, and a pulling test is performed at a pulling speed of 50 mm / min. Pulling strength (test force at which the tube begins to drop, unit: kgf) was measured.
  • a preferable pull-out strength is 400 kgf or more.
  • the nut was observed for deformation and cracks when the tube began to come off. In ⁇ evaluation of injection moldability>, a nut having a surface roughness, a warp or a short shot was judged as a molding defect product, and a pull-out test was not performed.
  • Synthesis example 1 A jacket type autoclave equipped with a stirrer and capable of containing 174 parts of water was charged with 26.6 parts of decarboxylated and demineralized water. The space inside the autoclave was sufficiently substituted with pure nitrogen gas and then evacuated to 30.4 parts of perfluorocyclobutane (hereinafter also referred to as “C-318”), 0.6 parts of methanol as a chain transfer agent and PPVE. 5 copies were prepared. Next, the inside of the autoclave was kept at 35 ° C. while stirring, and TFE was injected to make the internal pressure 0.58 MPaG.
  • C-318 perfluorocyclobutane
  • Polymerization was initiated by adding 0.010 part of dinormalpropyl peroxydicarbonate (hereinafter also referred to as “NPP”) as a polymerization initiator. Since the pressure in the autoclave decreased with the progress of the polymerization, TFE was injected to maintain the internal pressure at 0.58 MPaG. In addition, PPVE was also added as appropriate in order to make the polymerization composition uniform. 7.1 hours after the start of the polymerization, the stirring was stopped and at the same time, the unreacted monomer and C-318 were discharged to stop the polymerization. The white powder produced in the autoclave was washed with water and dried at 150 ° C. for 12 hours to obtain a polymer product.
  • NPP dinormalpropyl peroxydicarbonate
  • the obtained polymer product was melt-extruded at 360 ° C. by a screw extruder (trade name: PCM46, manufactured by Ikekai Co., Ltd.) to produce pellets.
  • a screw extruder (trade name: PCM46, manufactured by Ikekai Co., Ltd.) to produce pellets.
  • fusing point, MFR, and the weight average molecular weight were measured, it was as follows.
  • Copolymer composition (mass%): TFE / PPVE 97.5 / 2.5 Melting point: 315.1 ° C MFR: 4.8 g / 10 minutes
  • Synthesis Examples 2 to 14 Polymer product pellets were produced in the same manner as in Synthesis Example 1 except that the amount of the reactants and the reaction time were changed as shown in Table 1. About the obtained pellet, copolymer composition (ratio of PPVE), melting
  • Example 1 The polymer product pellets obtained in Synthesis Example 2 were preheated at 350 ° C. for 1 hour, then pressurized at 75 MPa for 1 minute to form a 20 mm thick sheet, and allowed to cool to room temperature to obtain a sample sheet. The sample sheet was cut to 13 ⁇ ⁇ 6 mmt to obtain a test piece.
  • the restoration rate of the test piece was measured by the method described above. The results are shown in Table 2.
  • a nut forming mold corresponding to a tube having a similar structure and an outer diameter of 57.4 mm was produced.
  • a nut was injection molded from the resulting polymer product pellets as a raw material.
  • the molding conditions were a cylinder temperature of 365 ° C., a nozzle temperature of 365 ° C., a mold temperature of 150 ° C., and a holding pressure of 35 MPa.
  • the radial thickness of the cylinder is 9 mm
  • the axial thickness of the inward flange is 11 mm
  • the diameter of the through hole formed by the inward flange is 58 mm
  • the inner diameter of the cylinder is 69 mm. It was prepared. The produced nut had good injection moldability.
  • a heat gun was attached to one end of a tube with an outer diameter of 57.4 mm and a thickness of 3.3 mm with an inner diameter of 2 inches (50.8 mm) obtained from Daikin Industries, Ltd. PFA AP-231SH (MFR 1.88 g / 10 min).
  • the tube is passed through the nut and PCTFE ring, one end of the flared tube is connected to the joint body cut with PTFE, the nut is screwed into the joint body and tightened to tighten the tube. Fixed to the body.
  • the test force at which the tube began to come out was 490 kgf. At this time, the nut did not deform or crack.
  • Examples 2-8, Comparative Examples 1-6 Using the polymer product pellets obtained in Synthesis Examples 1 and 3 to 14, a test piece was prepared in the same manner as in Example 1, the recovery rate of the obtained test piece was measured, and each polymer was produced. A joint nut was prepared using the pellets of the product, and the injection moldability evaluation and the pull-out test were performed in the same manner as in Example 1. The results are shown in Table 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Joints With Pressure Members (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
PCT/JP2013/069301 2012-07-17 2013-07-16 Organe femelle pour systèmes d'accouplement Ceased WO2014013989A1 (fr)

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CN106489047A (zh) * 2014-05-07 2017-03-08 贝克休斯公司 管件连接布置以及密封地连接管件的方法
WO2018179678A1 (fr) * 2017-03-30 2018-10-04 日本ピラー工業株式会社 Raccord de tuyau résineux
CN111174012A (zh) * 2020-03-14 2020-05-19 绍兴上虞中塘电器五金厂 一种可拆卸管插接头
CN111946926A (zh) * 2020-08-13 2020-11-17 吴寿华 一种连接牢固的高强度hdpe双壁波纹管
US20220195088A1 (en) * 2019-04-05 2022-06-23 Daikin Industries, Ltd. Member to be compressed for electrochemical devices
WO2023190945A1 (fr) * 2022-03-30 2023-10-05 ダイキン工業株式会社 Copolymère, corps moulé, corps extrudé et corps moulé par transfert

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CN111734898B (zh) * 2018-10-16 2021-08-13 山东大学 基于生物制药用管道快速连接装置的快速连接方法
JP6974776B2 (ja) 2019-08-26 2021-12-01 ダイキン工業株式会社 非水電解液電池用部材
EP4023409A4 (fr) 2019-08-26 2023-08-30 Daikin Industries, Ltd. Procédé de moulage par injection
TWI786596B (zh) * 2020-04-17 2022-12-11 美商恩特葛瑞斯股份有限公司 靜電釋放緩和裝置及具有靜電釋放緩和裝置之流體迴路
KR20230131268A (ko) 2021-02-26 2023-09-12 다이킨 고교 가부시키가이샤 사출 성형체 및 그 제조 방법
KR20230129191A (ko) 2021-02-26 2023-09-06 다이킨 고교 가부시키가이샤 사출 성형체 및 그 제조 방법
JP7137111B2 (ja) 2021-02-26 2022-09-14 ダイキン工業株式会社 射出成形体およびその製造方法
CN116981874A (zh) 2021-02-26 2023-10-31 大金工业株式会社 管接头和管接头的制造方法
JP7174307B2 (ja) 2021-02-26 2022-11-17 ダイキン工業株式会社 射出成形体およびその製造方法
JP7347882B1 (ja) * 2023-02-06 2023-09-20 井上スダレ株式会社 管継手とパイプの接続方法及び接続構造体
JP7523829B1 (ja) 2023-08-17 2024-07-29 井上スダレ株式会社 管継手とパイプの接続方法及び接続構造体

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CN106489047A (zh) * 2014-05-07 2017-03-08 贝克休斯公司 管件连接布置以及密封地连接管件的方法
CN106489047B (zh) * 2014-05-07 2020-02-18 贝克休斯公司 管件连接布置以及密封地连接管件的方法
WO2018179678A1 (fr) * 2017-03-30 2018-10-04 日本ピラー工業株式会社 Raccord de tuyau résineux
JP2018168947A (ja) * 2017-03-30 2018-11-01 日本ピラー工業株式会社 樹脂製管継手
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US12312427B2 (en) * 2019-04-05 2025-05-27 Daikin Industries, Ltd. Member to be compressed for electrochemical devices
CN111174012A (zh) * 2020-03-14 2020-05-19 绍兴上虞中塘电器五金厂 一种可拆卸管插接头
CN111946926A (zh) * 2020-08-13 2020-11-17 吴寿华 一种连接牢固的高强度hdpe双壁波纹管
WO2023190945A1 (fr) * 2022-03-30 2023-10-05 ダイキン工業株式会社 Copolymère, corps moulé, corps extrudé et corps moulé par transfert
JP7364987B1 (ja) 2022-03-30 2023-10-19 ダイキン工業株式会社 共重合体、成形体、押出成形体およびトランスファー成形体
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