GB1389751A - Injection moulding machinery - Google Patents
Injection moulding machineryInfo
- Publication number
- GB1389751A GB1389751A GB4067172A GB4067172A GB1389751A GB 1389751 A GB1389751 A GB 1389751A GB 4067172 A GB4067172 A GB 4067172A GB 4067172 A GB4067172 A GB 4067172A GB 1389751 A GB1389751 A GB 1389751A
- Authority
- GB
- United Kingdom
- Prior art keywords
- port
- outlet
- bore
- inlet
- ports
- 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.)
- Expired
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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1603—Multi-way nozzles specially adapted therefor
- B29C45/1606—Multi-way nozzles specially adapted therefor using a rotatable valve
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
1389751 Injection moulding machines IMPERIAL CHEMICAL INDUSTRIES Ltd 3 Dec 1973 [1 Sept 1972] 40671/72 Heading B5A An injection moulding machine for "sandwich" moulding has a valve comprising a cylindrical body 2 rotatable in a housing 1 provided with two inlet ports 3, 4 and an outlet port 5, the inlet ports being of greater cross-section than the outlet port, the cylindrical body 2 having two bores 6,7 therethrough, the inlet of each bore being the same size as its associated inlet port 3 or 4, and the outlet of each bore being the same size as the outlet port or enlarged thereover in the direction of the outlet of the other bore, and the angle GOH (Fig. 1), being less than the angle EOF. To change over for injection of skin material from port 3 to injection of core material from port 4, the body 2 is rotated clockwise and the inlet of bore 7 comes into communication with port 4 before its outlet communicates with the outlet port 5 (see Fig. 3); also the outlet of bore 7 comes into communication with the outlet port 5 while the other bore 6 is in communication with both ports 3 and 5. In a modification (Fig. 7), the bores 6, 7 are skewed so that the centres of three ports 3, 4, 5 lie in the same plane as the longitudinal axis of the cylindrical body 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4067172A GB1389751A (en) | 1972-09-01 | 1972-09-01 | Injection moulding machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4067172A GB1389751A (en) | 1972-09-01 | 1972-09-01 | Injection moulding machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1389751A true GB1389751A (en) | 1975-04-09 |
Family
ID=10416053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4067172A Expired GB1389751A (en) | 1972-09-01 | 1972-09-01 | Injection moulding machinery |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1389751A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4197069A (en) * | 1976-05-21 | 1980-04-08 | Peter Cloeren | Variable thickness extrusion die |
| US4373886A (en) * | 1976-10-14 | 1983-02-15 | Karl Hehl | Apparatus for injecting confluent streams of plastic material into an injection molding die |
| US4710118A (en) * | 1984-02-17 | 1987-12-01 | Continental Pet Technologies, Inc. | Apparatus for forming preforms with internal barrier |
| AU709261B2 (en) * | 1996-02-07 | 1999-08-26 | Bushman Polyproducts Pty Ltd | Plastic recycling improvement |
-
1972
- 1972-09-01 GB GB4067172A patent/GB1389751A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4197069A (en) * | 1976-05-21 | 1980-04-08 | Peter Cloeren | Variable thickness extrusion die |
| US4373886A (en) * | 1976-10-14 | 1983-02-15 | Karl Hehl | Apparatus for injecting confluent streams of plastic material into an injection molding die |
| US4710118A (en) * | 1984-02-17 | 1987-12-01 | Continental Pet Technologies, Inc. | Apparatus for forming preforms with internal barrier |
| AU709261B2 (en) * | 1996-02-07 | 1999-08-26 | Bushman Polyproducts Pty Ltd | Plastic recycling improvement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 426 | Order made revoking patent and granting patent of addition in lieu thereof (sect. 26(2)/1949) | ||
| SP | Amendment (slips) printed | ||
| PE20 | Patent expired after termination of 20 years |