JPS562146A - Pressing molding method - Google Patents
Pressing molding methodInfo
- Publication number
- JPS562146A JPS562146A JP7857979A JP7857979A JPS562146A JP S562146 A JPS562146 A JP S562146A JP 7857979 A JP7857979 A JP 7857979A JP 7857979 A JP7857979 A JP 7857979A JP S562146 A JPS562146 A JP S562146A
- Authority
- JP
- Japan
- Prior art keywords
- molding
- pressure
- reduced
- molding space
- metal
- 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.)
- Pending
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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
PURPOSE:To obtain moldings which have dimension accuracy the same as precision parts in metal by a method wherein a surrounding airtight chamber is pressure- reduced, and a thermohardening resin composition is injected by pressure into the molding space of metal molds, whose pressure in reduced through slits. CONSTITUTION:Metal molds 1, 2, 3 are held between the mold-clamping plates 4, 5 of a molding machine, a shround 6 is mounted on an outer circumference, and the molds are clamped. A vacuum pump 8 is operated as a solenoid valve 9 is left as it is closed. When a molding material is introduced into a pot 11 of the upper mold- clamping plate 4 and a plunger 10 is let fall, a sealing material 12 of the nose enters into the pot 11, and airtightness in molding space 18 is kept. When the inside of an airtight chamber is pressure-reduced by opening the solenoid valve 9, the molding space 18 is pressure-reduced through the slits of the uniting surfaces of the metal molds 1, 2, 3, a guide pin 14, a metal mold projecting P in 15 and a molding projecting pin 16. The molding of excellent external appearance and dimension accuracy is enabled because the molding space 18 is successively pressure-reduced during the time when the molding material is injected into the molding space 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7857979A JPS562146A (en) | 1979-06-20 | 1979-06-20 | Pressing molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7857979A JPS562146A (en) | 1979-06-20 | 1979-06-20 | Pressing molding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS562146A true JPS562146A (en) | 1981-01-10 |
Family
ID=13665805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7857979A Pending JPS562146A (en) | 1979-06-20 | 1979-06-20 | Pressing molding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS562146A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6389319A (en) * | 1986-10-01 | 1988-04-20 | Nec Corp | Molding tool |
| JP2018094855A (en) * | 2016-12-16 | 2018-06-21 | アピックヤマダ株式会社 | Apparatus for resin molding and method for resin molding |
-
1979
- 1979-06-20 JP JP7857979A patent/JPS562146A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6389319A (en) * | 1986-10-01 | 1988-04-20 | Nec Corp | Molding tool |
| JP2018094855A (en) * | 2016-12-16 | 2018-06-21 | アピックヤマダ株式会社 | Apparatus for resin molding and method for resin molding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB989124A (en) | Process and apparatus for moulding hardenable plastics in a vacuum | |
| JPS5630841A (en) | Plastic molding method and metallic mold therefor | |
| JPS54148055A (en) | Molding of lens with degree | |
| EP0397883A4 (en) | Injection compression molding machine and its molding method | |
| ES295489A1 (en) | Molding process | |
| JPS5611236A (en) | Method and metallic mold for plastic molding | |
| JPS562146A (en) | Pressing molding method | |
| US5478519A (en) | Injection-compression process for forming complex shaped items of elastomeric material | |
| GB8902841D0 (en) | Method and apparatus for moulding a fluid settable material | |
| JPS5812741A (en) | Mold device for injection compression molding | |
| JPS5745041A (en) | Mold for resin injection molding | |
| JPS57117936A (en) | Molds for molding | |
| JPS5795430A (en) | Injection and compression molding machine | |
| JPS6414014A (en) | Mold exterior airtightness variable pressure molding device | |
| JPS57129728A (en) | Vacuum injection molding machine | |
| JPS575339A (en) | Molding method and molding die | |
| GB1175905A (en) | Vacuum Sealing Means for Molds | |
| JPS57117935A (en) | Molding structure for synthetic resin molding | |
| JPS57205120A (en) | Molding of aspherical lens | |
| JPS6463122A (en) | Injection molding | |
| SU1211066A1 (en) | Apparatus for injection moulding of rubber articles | |
| GB1199445A (en) | Method of Producing Castings of Plasticisable Material. | |
| SU588127A1 (en) | Injection mould for making articles from thermosetting plastics | |
| JPS57207050A (en) | Transfer mold | |
| GB1150052A (en) | Improvements relating to Panels |