Title:
BLOW MOLDING MACHINE
Document Type and Number:
Japanese Patent JP3647565
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce drawdown and uniform the thickness of a product by arranging a non-contact thermometer for detecting a resin temperature of a parison near a die, receiving the parison at a catch pan fixed to a movable body movable up and down at the lower part of the die, and controlling the descending speed of the movable body based on the resin temperature.
SOLUTION: A non-contact thermometer 2 is provided under a die 1 and a resin temperature of a parison P coming out from the die 1 is detected. A catch pan 3 is fixed to a movable body 52b movable up and down, made to descend by holding the parison P, and a servo unit 5 is made to be a moving means of the catch pan 3. By using the resin temperature which is previously set by a speed control device and a basic pattern of the descending speed of the catch pan, the temperature of the parison P detected by the non-contact thermometer 2 is compared and computed so as to decide the descending speeds of the movable body 52b and the catch pan 3. As a result, when a drawdown is reduced and the temperature of the parison resin immediately after start of molding is low, the catch pan 3 descends slowly, so that an excellent product can be obtained at early stage.
Inventors:
Wataru Ibuki
Application Number:
JP22408996A
Publication Date:
May 11, 2005
Filing Date:
August 26, 1996
Export Citation:
Assignee:
Inoac Corporation
International Classes:
B29B11/10; B29C49/04; B29C49/78; B29L22/00; (IPC1-7): B29C49/78; B29B11/10; B29C49/04
Domestic Patent References:
| JP4361018A | ||||
| JP4344220A | ||||
| JP4347619A | ||||
| JP4314521A | ||||
| JP6315972A |
Attorney, Agent or Firm:
Yoshinobu Kobayashi
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