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 compoundInfo
- 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- Withdrawn
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.
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)
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)
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 |
-
1977
- 1977-03-23 DE DE19772712719 patent/DE2712719A1/en active Pending
-
1978
- 1978-03-22 JP JP3180978A patent/JPS53137359A/en active Pending
- 1978-03-23 FR FR7808541A patent/FR2385006A1/en not_active Withdrawn
Cited By (4)
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 |
---|---|
DE2712719A1 (en) | 1978-09-28 |
JPS53137359A (en) | 1978-11-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |