JPS5619716A - Core die for forming tap - Google Patents

Core die for forming tap

Info

Publication number
JPS5619716A
JPS5619716A JP9625879A JP9625879A JPS5619716A JP S5619716 A JPS5619716 A JP S5619716A JP 9625879 A JP9625879 A JP 9625879A JP 9625879 A JP9625879 A JP 9625879A JP S5619716 A JPS5619716 A JP S5619716A
Authority
JP
Japan
Prior art keywords
core
core die
pieces
separate pieces
die
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.)
Granted
Application number
JP9625879A
Other languages
Japanese (ja)
Other versions
JPS6336929B2 (en
Inventor
Junsuke Kyomen
Masayuki Sakaguchi
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP9625879A priority Critical patent/JPS5619716A/en
Publication of JPS5619716A publication Critical patent/JPS5619716A/en
Publication of JPS6336929B2 publication Critical patent/JPS6336929B2/ja
Granted 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/02—Belling or enlarging, e.g. combined with forming a groove
    • B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

PURPOSE:To form the tap of a pipe with ease by using a simple core die by a method wherein the captioned core die for connecting synthetic resin pipes of small caliber is constituted by plural number of separate pieces and the diameter is enlarged or reduced by pushing up these pieces in the radial direction. CONSTITUTION:Inside a pipe P is inserted a core die consisting of a tip introduction part 7, a straight tube part 8, a primary diameter-enlarging part 8 and separate pieces 12 and 13, while the outside part of the pipe P is formed by an outside die 5. The separate pieces 12 and 13 constituting the core die are made to move in the radial direction by a sliding core 16 which moves slidably along the outer periphery of a fixed axis 15. When the sliding core 16 is advanced, the grooves of the pieces 12 and 13 come into engagement with a slant guide part 19b and a projection 20 and are pushed up to enlarge the diameter. When the sliding core 16 is retreated in the direction of an arrow, the grooves of the separate pieces 12 and 13 are engaged with the guide part 19b and the projection 20 and thereby the diamter is reduced.
JP9625879A 1979-07-28 1979-07-28 Core die for forming tap Granted JPS5619716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9625879A JPS5619716A (en) 1979-07-28 1979-07-28 Core die for forming tap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9625879A JPS5619716A (en) 1979-07-28 1979-07-28 Core die for forming tap

Publications (2)

Publication Number Publication Date
JPS5619716A true JPS5619716A (en) 1981-02-24
JPS6336929B2 JPS6336929B2 (en) 1988-07-22

Family

ID=14160158

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9625879A Granted JPS5619716A (en) 1979-07-28 1979-07-28 Core die for forming tap

Country Status (1)

Country Link
JP (1) JPS5619716A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819474U (en) * 1981-07-30 1983-02-05 日本電子機器株式会社 Connector with terminal lock
JPS6022308U (en) * 1983-07-20 1985-02-15 アロン化成株式会社 Core mold for injection molding
JPH0432077U (en) * 1990-07-12 1992-03-16
JP2011203740A (en) * 2005-01-11 2011-10-13 Eddy Allan Balma Method for manufacturing percussion instrument

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4971062A (en) * 1972-11-08 1974-07-09
JPS51103978A (en) * 1975-03-12 1976-09-14 Sekisui Chemical Co Ltd NETSUKASOSEIJUSHIKANNI KANJOBOSHUTSUBUO KEISEISURUHOHO

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4971062A (en) * 1972-11-08 1974-07-09
JPS51103978A (en) * 1975-03-12 1976-09-14 Sekisui Chemical Co Ltd NETSUKASOSEIJUSHIKANNI KANJOBOSHUTSUBUO KEISEISURUHOHO

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819474U (en) * 1981-07-30 1983-02-05 日本電子機器株式会社 Connector with terminal lock
JPS6022308U (en) * 1983-07-20 1985-02-15 アロン化成株式会社 Core mold for injection molding
JPH0131462Y2 (en) * 1983-07-20 1989-09-27
JPH0432077U (en) * 1990-07-12 1992-03-16
JP2011203740A (en) * 2005-01-11 2011-10-13 Eddy Allan Balma Method for manufacturing percussion instrument

Also Published As

Publication number Publication date
JPS6336929B2 (en) 1988-07-22

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