FR2385006A1 - Thermoplastics injection-moulded spur gear with bulging teeth - has embedded metal ring to control shrinkage of moulding compound - Google Patents

Thermoplastics injection-moulded spur gear with bulging teeth - has embedded metal ring to control shrinkage of moulding compound

Info

Publication number
FR2385006A1
FR2385006A1 FR7808541A FR7808541A FR2385006A1 FR 2385006 A1 FR2385006 A1 FR 2385006A1 FR 7808541 A FR7808541 A FR 7808541A FR 7808541 A FR7808541 A FR 7808541A FR 2385006 A1 FR2385006 A1 FR 2385006A1
Authority
FR
France
Prior art keywords
metal ring
teeth
thermoplastics
moulded
spur gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR7808541A
Other languages
French (fr)
Inventor
Werner Friedrich
Vinzenz Haberzett
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.)
Maschinenfabrik Reinhausen GmbH
Original Assignee
Maschinenfabrik Reinhausen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Reinhausen GmbH filed Critical Maschinenfabrik Reinhausen GmbH
Publication of FR2385006A1 publication Critical patent/FR2385006A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14819—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being completely encapsulated
    • 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
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
    • 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
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2015/00—Gear wheels or similar articles with grooves or projections, e.g. control knobs
    • B29L2015/003—Gears

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Gears, Cams (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

Thermoplastics, injection-moulded, spur gearwheel has teeth whose sides bulge spherically. A metal ring intended to control the shrinkage of the thermoplastics moulding cpd., is embedded in the body of the gearwheel and positioned centrally w.r.t. the gear-tooth system. Its outer dia. is slightly smaller than root circle of the gearwheel and its breadth is smaller then the breadth of the teeth. The embedded metal ring controls shrinkage of the thermoplastics such that the moulding can easily removed from the mould. This enables gearwheels with spherically bulding teeth to be simply and cheaply mfd.
FR7808541A 1977-03-23 1978-03-23 Thermoplastics injection-moulded spur gear with bulging teeth - has embedded metal ring to control shrinkage of moulding compound Withdrawn FR2385006A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772712719 DE2712719A1 (en) 1977-03-23 1977-03-23 INJECTION MOLDED SPUR WHEEL MADE OF THERMOPLASTIC PLASTIC

Publications (1)

Publication Number Publication Date
FR2385006A1 true FR2385006A1 (en) 1978-10-20

Family

ID=6004424

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7808541A Withdrawn FR2385006A1 (en) 1977-03-23 1978-03-23 Thermoplastics injection-moulded spur gear with bulging teeth - has embedded metal ring to control shrinkage of moulding compound

Country Status (3)

Country Link
JP (1) JPS53137359A (en)
DE (1) DE2712719A1 (en)
FR (1) FR2385006A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487772A1 (en) * 1980-08-04 1982-02-05 Haubtmann A Sa Ets MONOBLOC ASSEMBLY INCLUDING AT LEAST ONE PLATE WITH OR WITHOUT CHAIN GUARD TO BE CRIMPED ON CRANKS, USABLE FOR BICYCLES AND SIMILAR VEHICLES, AND ITS MANUFACTURING PROCESS
FR3021576A1 (en) * 2014-06-03 2015-12-04 Jtekt Europe Sas METHOD FOR MANUFACTURING A WHEEL WITH REINFORCING STRAP

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332146A (en) * 1980-11-24 1982-06-01 Hitachi, Ltd. Drive force transmitting device for ice-making tray of automatic ice-making machine
US5852951A (en) * 1994-10-04 1998-12-29 Briggs & Stratton Corporation Composite gear and method of making same
CN109228208A (en) * 2018-09-20 2019-01-18 昆山弘正电子科技有限公司 The injection mold of router base and the Shooting Technique of router base

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487772A1 (en) * 1980-08-04 1982-02-05 Haubtmann A Sa Ets MONOBLOC ASSEMBLY INCLUDING AT LEAST ONE PLATE WITH OR WITHOUT CHAIN GUARD TO BE CRIMPED ON CRANKS, USABLE FOR BICYCLES AND SIMILAR VEHICLES, AND ITS MANUFACTURING PROCESS
FR3021576A1 (en) * 2014-06-03 2015-12-04 Jtekt Europe Sas METHOD FOR MANUFACTURING A WHEEL WITH REINFORCING STRAP
WO2015185817A1 (en) * 2014-06-03 2015-12-10 Jtekt Europe Method of manufacturing a toothed wheel with reinforcing hoop
US10427340B2 (en) 2014-06-03 2019-10-01 Jtekt Europe Method for manufacturing a toothed wheel with reinforcing strapping

Also Published As

Publication number Publication date
JPS53137359A (en) 1978-11-30
DE2712719A1 (en) 1978-09-28

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Legal Events

Date Code Title Description
ST Notification of lapse