Title:
METHOD OF MEASURING INJECTION MOLDING MACHINE
Document Type and Number:
Japanese Patent JP3245091
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent the induction of defecting molding including wrinkling and sinking due to measuring shortage by a method in which a volume type feeder is operated for a prescribed length of time, a thermoplastic material is supplied to an injection molding machine, the operation of screws of the feeder and the injection molding machine is stopped, and a prescribed amount of the molten material is accumulated in the storage part in a cylinder.
SOLUTION: A thermoplastic material A is supplied continuously from a volume type feeder 10 into an injection molding machine 1, after the elapse of a prescribed length of time, the rotation of the feeder 10 and the rotation and retraction of a screw 4 are stopped, and the plastication and measuring process of the material A is finished. By the rotation and retraction of the screw 4, the molten material A in an amount nearly equal to the volume a cavity 15a is secured in a storage part 2b. Next, after the closing and clamping of a mold 15, a nozzle 6 is contacted with the mold 15 to enter an injection process, and the molten material A is injected into the cavity 15a. A proper amount of the molten material A can be stored in the plastication and measuring process so that defects in the molding such as wrinkling and sinking are controlled to avoid the generation of nonconforming products.
Inventors:
Kengo Takeya
Application Number:
JP19517897A
Publication Date:
January 07, 2002
Filing Date:
July 04, 1997
Export Citation:
Assignee:
Japan Steel Works, Ltd.
International Classes:
B29C45/50; B22D17/20; B22D17/32; B29C33/38; B29C45/76; C03B19/00; B29K305/00; B29K309/08; (IPC1-7): B22D17/32; B29C33/38; B29C45/50; B29C45/76; C03B19/00
Domestic Patent References:
| JP62132624A | ||||
| JP63236618A | ||||
| JP2227229A | ||||
| JP462129A | ||||
| JP857901A | ||||
| JP8243719A |
Attorney, Agent or Firm:
Hiroyuki Maeda