JPS6485726A - Method and apparatus for controlling dwell process in injection molder - Google Patents
Method and apparatus for controlling dwell process in injection molderInfo
- Publication number
- JPS6485726A JPS6485726A JP24092887A JP24092887A JPS6485726A JP S6485726 A JPS6485726 A JP S6485726A JP 24092887 A JP24092887 A JP 24092887A JP 24092887 A JP24092887 A JP 24092887A JP S6485726 A JPS6485726 A JP S6485726A
- Authority
- JP
- Japan
- Prior art keywords
- time
- dwell
- screw
- speed
- measured
- 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
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
PURPOSE:To reduce the cycle time and consequently enhance the production efficiency by a method wherein the time, which is required for the forward speed of a screw to lower to the set value, is measured and the dwell process in the following cycle is brought to an end on the basis of said measured time. CONSTITUTION:A time counter 40 starts time-counting at the change-over point, which is determined on the basis of the position signal of an injection screw 12 (or the oil pressure signal of an oil chamber 18), from a filling process to a dwell process. During the dwell process, firstly the first stage pressure is kept and, after the predetermined period of time, changed over to the second stage pressure value. After that, when the speed of the screw 12 lowers to the speed value Vs, which is set at a screw speed setter 34, the time counter 40 stops time-counting. The time, which is obtained by adding an allowed time T to the time measured with the time counter 40, is set to a dwell and time setter 44. After said set time, a dwell process end signal is outputted so as to change-over the working state of a servo valve 20. Accordingly, no inutile dwell time develops and consequently the cycle time can be reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62240928A JPH0751304B2 (en) | 1987-09-28 | 1987-09-28 | Method and apparatus for controlling pressure holding process of injection molding machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62240928A JPH0751304B2 (en) | 1987-09-28 | 1987-09-28 | Method and apparatus for controlling pressure holding process of injection molding machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6485726A true JPS6485726A (en) | 1989-03-30 |
JPH0751304B2 JPH0751304B2 (en) | 1995-06-05 |
Family
ID=17066730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62240928A Expired - Fee Related JPH0751304B2 (en) | 1987-09-28 | 1987-09-28 | Method and apparatus for controlling pressure holding process of injection molding machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0751304B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0471819A (en) * | 1990-07-12 | 1992-03-06 | Sumitomo Heavy Ind Ltd | Method for controlling dwelling of injection molder |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT525189B1 (en) * | 2021-06-16 | 2023-06-15 | Engel Austria Gmbh | Method and computer program product for improving a cycle time |
-
1987
- 1987-09-28 JP JP62240928A patent/JPH0751304B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0471819A (en) * | 1990-07-12 | 1992-03-06 | Sumitomo Heavy Ind Ltd | Method for controlling dwelling of injection molder |
Also Published As
Publication number | Publication date |
---|---|
JPH0751304B2 (en) | 1995-06-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |