JPH0521053B2 - - Google Patents
Info
- Publication number
- JPH0521053B2 JPH0521053B2 JP21667784A JP21667784A JPH0521053B2 JP H0521053 B2 JPH0521053 B2 JP H0521053B2 JP 21667784 A JP21667784 A JP 21667784A JP 21667784 A JP21667784 A JP 21667784A JP H0521053 B2 JPH0521053 B2 JP H0521053B2
- Authority
- JP
- Japan
- Prior art keywords
- punch
- mold
- lever
- center hole
- hydraulic cylinder
- 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 - Lifetime
Links
- 238000000465 moulding Methods 0.000 claims description 20
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000004080 punching Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000003908 quality control method Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 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
- B29C45/26—Moulds
- B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Manufacturing Optical Record Carriers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21667784A JPS6194732A (ja) | 1984-10-16 | 1984-10-16 | 光学デイスク成形金型 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21667784A JPS6194732A (ja) | 1984-10-16 | 1984-10-16 | 光学デイスク成形金型 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6194732A JPS6194732A (ja) | 1986-05-13 |
| JPH0521053B2 true JPH0521053B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1993-03-23 |
Family
ID=16692191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21667784A Granted JPS6194732A (ja) | 1984-10-16 | 1984-10-16 | 光学デイスク成形金型 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6194732A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
-
1984
- 1984-10-16 JP JP21667784A patent/JPS6194732A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6194732A (ja) | 1986-05-13 |