IE40983B1 - Transfer molding apparatus - Google Patents
Transfer molding apparatusInfo
- Publication number
- IE40983B1 IE40983B1 IE82675A IE82675A IE40983B1 IE 40983 B1 IE40983 B1 IE 40983B1 IE 82675 A IE82675 A IE 82675A IE 82675 A IE82675 A IE 82675A IE 40983 B1 IE40983 B1 IE 40983B1
- Authority
- IE
- Ireland
- Prior art keywords
- injection
- chamber
- mould
- end plate
- secondary chamber
- Prior art date
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
- B29C45/02—Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
1500816 Transfer moulding UNIROYAL AG 7 April 1975 [23 April 1974] 14097/75 Heading B5A Apparatus for moulding elastomeric stock comprises an injection unit having an injection chamber 36, an adaptor 34 defining a secondary chamber, valve means 38, 39 permitting unidirectional flow of stock from the injection to the secondary chamber, an apertured end plate 44 disposed at least in part in and movable axially relative to the secondary chamber, and means for moving the injection unit and a mould 80, 82, 84 relative to one another to reduce the axial extent of the secondary chamber and expel elastomeric stock through the end plate 44 and into the mould cavity. The valve means 38, 39 prevents backflow of elastomeric stock into the injection chamber 36 despite any pressure drop in the injection chamber during recharging thereof. A mould assembly 22 is moved towards the injection cylinder 28 initially by a toggle linkage array 20 and finally, to effect injection from chamber C into the mould, by means of a ram 70 in a housing 72 to which pressure fluid is admitted through an inlet 74. Plate 44 is made of heat resistant, flexible insulating material and formed with an array of apertures 58 having annular insets 60, e.g. of PTFE. Heating channels 43, 68 are provided in the adaptor 34 and a heating platen 66 respectively. An insulating sheet 64 is interposed between platen 66 and an end plate 62.
[GB1500816A]
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742419509 DE2419509C3 (en) | 1974-04-23 | 1974-04-23 | Method and device for producing molded parts |
Publications (2)
Publication Number | Publication Date |
---|---|
IE40983L IE40983L (en) | 1975-10-23 |
IE40983B1 true IE40983B1 (en) | 1979-09-26 |
Family
ID=5913684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE82675A IE40983B1 (en) | 1974-04-23 | 1975-04-11 | Transfer molding apparatus |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS5818900B2 (en) |
CA (1) | CA1046718A (en) |
CH (1) | CH593788A5 (en) |
DE (1) | DE2419509C3 (en) |
ES (1) | ES436879A1 (en) |
FR (1) | FR2268623B1 (en) |
GB (1) | GB1500816A (en) |
IE (1) | IE40983B1 (en) |
NL (1) | NL7504690A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2467684A1 (en) * | 1979-10-19 | 1981-04-30 | Solyvent Ventec | Transfer moulding press for multicavity rubber moulding tools - where the injection and transfer mould units are independent of mould thickness |
WO2018037544A1 (en) | 2016-08-25 | 2018-03-01 | 三菱電機株式会社 | Heat pump device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3121918A (en) * | 1960-04-07 | 1964-02-25 | Us Rubber Co | Molding apparatus |
-
1974
- 1974-04-23 DE DE19742419509 patent/DE2419509C3/en not_active Expired
-
1975
- 1975-04-07 GB GB1409775A patent/GB1500816A/en not_active Expired
- 1975-04-07 CA CA223,931A patent/CA1046718A/en not_active Expired
- 1975-04-11 IE IE82675A patent/IE40983B1/en unknown
- 1975-04-16 FR FR7511834A patent/FR2268623B1/fr not_active Expired
- 1975-04-21 NL NL7504690A patent/NL7504690A/en not_active Application Discontinuation
- 1975-04-22 JP JP4904575A patent/JPS5818900B2/en not_active Expired
- 1975-04-23 ES ES436879A patent/ES436879A1/en not_active Expired
- 1975-04-23 CH CH515075A patent/CH593788A5/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA1046718A (en) | 1979-01-23 |
CH593788A5 (en) | 1977-12-15 |
DE2419509C3 (en) | 1982-03-11 |
GB1500816A (en) | 1978-02-15 |
IE40983L (en) | 1975-10-23 |
JPS5818900B2 (en) | 1983-04-15 |
DE2419509B2 (en) | 1981-07-23 |
NL7504690A (en) | 1975-10-27 |
ES436879A1 (en) | 1976-12-01 |
FR2268623A1 (en) | 1975-11-21 |
DE2419509A1 (en) | 1975-11-13 |
JPS50146655A (en) | 1975-11-25 |
FR2268623B1 (en) | 1977-04-15 |
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