JPS5582625A - Air vent for injection molding machine - Google Patents
Air vent for injection molding machineInfo
- Publication number
- JPS5582625A JPS5582625A JP15886578A JP15886578A JPS5582625A JP S5582625 A JPS5582625 A JP S5582625A JP 15886578 A JP15886578 A JP 15886578A JP 15886578 A JP15886578 A JP 15886578A JP S5582625 A JPS5582625 A JP S5582625A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- air vent
- air
- movable die
- movable
- 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 eliminate waste of energy and to make the device simple, inexpensive and improved in productivity by inserting the piston rod into a hole in the bracket secured to a movable platen and connecting the pnerumatic cylinder and the air vent in the mold by a pipe. CONSTITUTION:When it is attempted to move the mold from the mold opening position to the mold closed condition, the movable platen 4 moves in the direction A while the movable die 6B is brought into tight attachmebt against the fixed die 6A to close the mold 6. Concurrently with this movement, the bracket 11 secured to the movable die 6B abuts against an adjusting means 12 to let the piston rod 10 move in the direction A, causing pressure reduction in the pneumatic cylinder 9. Since the charge-over valve 14 remains at its neutral position during this operation, the lowest pressure is reached when the mold 6 is closed. Upon completion of mold closure, the change-over valve 14 is operated so that air in the mold is sucked out from the air reservoir 6D in the movable die 6 through an air vent 6E and a pipe 13, whereby pressure in the cavity 7 is reduced to promote inflow of the resin injected from a spool 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15886578A JPS5582625A (en) | 1978-12-18 | 1978-12-18 | Air vent for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15886578A JPS5582625A (en) | 1978-12-18 | 1978-12-18 | Air vent for injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5582625A true JPS5582625A (en) | 1980-06-21 |
Family
ID=15681081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15886578A Pending JPS5582625A (en) | 1978-12-18 | 1978-12-18 | Air vent for injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5582625A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6081576A (en) * | 1983-10-07 | 1985-05-09 | Hitachi Zosen Corp | Manufacture of seal part of butterfly valve |
| KR20030004002A (en) * | 2001-07-12 | 2003-01-14 | 김기동 | The air extract system using piston cylinder |
-
1978
- 1978-12-18 JP JP15886578A patent/JPS5582625A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6081576A (en) * | 1983-10-07 | 1985-05-09 | Hitachi Zosen Corp | Manufacture of seal part of butterfly valve |
| KR20030004002A (en) * | 2001-07-12 | 2003-01-14 | 김기동 | The air extract system using piston cylinder |
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