GB1416870A - Injection moulds - Google Patents
Injection mouldsInfo
- Publication number
- GB1416870A GB1416870A GB477872A GB477872A GB1416870A GB 1416870 A GB1416870 A GB 1416870A GB 477872 A GB477872 A GB 477872A GB 477872 A GB477872 A GB 477872A GB 1416870 A GB1416870 A GB 1416870A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mould
- runner
- injection
- portions
- central
- 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
- 238000002347 injection Methods 0.000 title abstract 4
- 239000007924 injection Substances 0.000 title abstract 4
- 239000000463 material Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 229920001187 thermosetting polymer Polymers 0.000 abstract 1
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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2756—Cold runner channels
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/38—Cutting-off equipment for sprues or ingates
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
-
- 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
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/10—Thermosetting resins
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
1416870 Injection moulds BRITISH INDUSTRIAL PLASTICS Ltd 2 Feb 1973 [2 Feb 1972] 4778/72 Heading B5A An injection mould comprises two parts A, B, each part comprising a central portion 1, 2 and an outer portion 3, 4, the outer portions 3, 4 having means 18, 19 for heating them to the curing temperature of a thermosetting plastics material, and the central portions 1, 2 being provided with means 56, 22, 23, 25, 26 adapted to provide thermostatically controlled liquid circulation to maintain the central portions at a temperature lower than the curing temperature. A sprue 7 and runner 8 are provided in the central portion of the part A. At least one mould cavity 20, 21 is defined in the outer portion of the other part B, and the cavity and the runner each open on to the parting plane of the mould parts when the mould is open. The central portions 1, 2 are insulated from the outer portions by air gaps 27, 28. Runner channels 8 and hot runner channels 9 are of square or rectangular section to retain, the material when the mould is opened. When injection is complete, cut-off pins 10, 11 are forced forward by a plate 17 actuated by a cylinder (not shown). Ejector pins 12 ... 15 are provided for the moulded articles and the sprue.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB477872A GB1416870A (en) | 1972-02-02 | 1972-02-02 | Injection moulds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB477872A GB1416870A (en) | 1972-02-02 | 1972-02-02 | Injection moulds |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1416870A true GB1416870A (en) | 1975-12-10 |
Family
ID=9783644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB477872A Expired GB1416870A (en) | 1972-02-02 | 1972-02-02 | Injection moulds |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1416870A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2415531A1 (en) * | 1978-01-25 | 1979-08-24 | Bucher Guyer Ag Masch | COLD CHANNEL TOOL FOR TRANSFORMATION OF THERMOSETTING MATERIALS |
EP0068615A1 (en) * | 1981-06-29 | 1983-01-05 | Occidental Chemical Corporation | Apparatus for runnerless injection compression molding of thermosetting materials |
EP0068614A1 (en) * | 1981-06-29 | 1983-01-05 | Occidental Chemical Corporation | Apparatus and method for runnerless injection compression molding of thermosetting materials |
US4447386A (en) * | 1981-06-29 | 1984-05-08 | Occidental Chemical Corporation | Process for runnerless injection - compression molding of thermosetting materials |
EP0596271A1 (en) * | 1992-10-07 | 1994-05-11 | Sumitomo Heavy Industries, Ltd | Locally pressurized type injection molding machine |
-
1972
- 1972-02-02 GB GB477872A patent/GB1416870A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2415531A1 (en) * | 1978-01-25 | 1979-08-24 | Bucher Guyer Ag Masch | COLD CHANNEL TOOL FOR TRANSFORMATION OF THERMOSETTING MATERIALS |
EP0068615A1 (en) * | 1981-06-29 | 1983-01-05 | Occidental Chemical Corporation | Apparatus for runnerless injection compression molding of thermosetting materials |
EP0068614A1 (en) * | 1981-06-29 | 1983-01-05 | Occidental Chemical Corporation | Apparatus and method for runnerless injection compression molding of thermosetting materials |
US4447386A (en) * | 1981-06-29 | 1984-05-08 | Occidental Chemical Corporation | Process for runnerless injection - compression molding of thermosetting materials |
EP0596271A1 (en) * | 1992-10-07 | 1994-05-11 | Sumitomo Heavy Industries, Ltd | Locally pressurized type injection molding machine |
US5439371A (en) * | 1992-10-07 | 1995-08-08 | Sumitomo Heavy Industries, Ltd. | Locally pressurizing injection molding machine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |