JPS5724229A - Method and apparatus for clamping injection molding machine safely - Google Patents
Method and apparatus for clamping injection molding machine safelyInfo
- Publication number
- JPS5724229A JPS5724229A JP9963080A JP9963080A JPS5724229A JP S5724229 A JPS5724229 A JP S5724229A JP 9963080 A JP9963080 A JP 9963080A JP 9963080 A JP9963080 A JP 9963080A JP S5724229 A JPS5724229 A JP S5724229A
- Authority
- JP
- Japan
- Prior art keywords
- die plate
- mold
- moving die
- clamping
- clamping 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.)
- Granted
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
- B29C45/84—Safety devices
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
PURPOSE:To ensure the safety of clamping work by a method wherein the normality and abnormality of mold clamping operation and mold opening operation are judged by detecting the motion of a section moving with the opening and closing of a mold as pulse signals, and a driving source of a clamping cylinder is automatically turned OFF when the mold operates abnormally. CONSTITUTION:A moving die plate 11 is at a position of mold opening under a condition that a piston 5 of the clamping cylinder 7 is backed by the excitation of a solenoid 21b of a solenoid valve 21, and a limit switch 20 is at ON and a limit of the mold opening of the moving die plate 11 is detected. When a piston rod 13 of the clamping cylinder 7 is, for example, broken under this condition, said piston rod 13 moves right due to oil pressure force functioning to the sectional area of the rod, the moving die plate 11 starts mold clamping operation, and a displacement detecting reference scale 16 moves right in association with the moving die plate 11. Accordingly, the movement of the moving die plate 11 is stopped and the safety of work is ensured even when the moving die plate 11 functions by mistake.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9963080A JPS5724229A (en) | 1980-07-21 | 1980-07-21 | Method and apparatus for clamping injection molding machine safely |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9963080A JPS5724229A (en) | 1980-07-21 | 1980-07-21 | Method and apparatus for clamping injection molding machine safely |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5724229A true JPS5724229A (en) | 1982-02-08 |
JPS6337686B2 JPS6337686B2 (en) | 1988-07-26 |
Family
ID=14252395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9963080A Granted JPS5724229A (en) | 1980-07-21 | 1980-07-21 | Method and apparatus for clamping injection molding machine safely |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5724229A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6422414U (en) * | 1987-08-03 | 1989-02-06 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5238568A (en) * | 1975-09-22 | 1977-03-25 | Ichikoh Industries Ltd | Device for controlling pressure of injection molding machine |
JPS5399267A (en) * | 1977-02-14 | 1978-08-30 | Hitachi Ltd | Method and apparatus for controlling injection molding machine |
-
1980
- 1980-07-21 JP JP9963080A patent/JPS5724229A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5238568A (en) * | 1975-09-22 | 1977-03-25 | Ichikoh Industries Ltd | Device for controlling pressure of injection molding machine |
JPS5399267A (en) * | 1977-02-14 | 1978-08-30 | Hitachi Ltd | Method and apparatus for controlling injection molding machine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6422414U (en) * | 1987-08-03 | 1989-02-06 |
Also Published As
Publication number | Publication date |
---|---|
JPS6337686B2 (en) | 1988-07-26 |
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