EP0368300A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Apparatus for setting molding conditions in an injection molding machine
Assignee: Shibaura Machine Co Ltd
•
Filing: 1989-11-09
•
Granted: —
•
Expires: 2009-11-09
Abstract
Abstract An optimum molding condition setting system for an injection molding machine is disclosed. The system comprises a molten material flow analysis means for analyzing a resin flow, a resin cooling and a structure/strength of molded products by using a designed model mold and also comprises an analysis result evaluation means for determining an initial molding condition and its permissible range in accordance with the analysis results. The initial molding condition is set into the injection molding machine and a test shot is carried out in order to check for a deficiency of a molded product. If the deficiency of the molded product has found out, a data of the deficiency is entered into a molding defect elimination means. After performing a convenient data processing based on the entered data, a cause of the molding defect can be inferred and a measure for the cause can be obtained with high efficiency and accuracy. Consequently, the molding condition can properly and immediately be corrected in accordance with data obtained by the molten material flow analysis means.
Inventors
- 👤 Shigeru Fujita
- 👤 Hideo Saito
- 👤 Katsuyuki Yamamoto
- 👤 Satoshi Endo
- 👤 Fumio Kamahora
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 07:23
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/76; B29C45/768; B29C45/766; B29C45/0025
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
328 words
An optimum molding condition setting system for an injection molding machine comprising: means for analyzing a flow of a molten material, which carries out analyses of a resin flow, a resin a cooling and a structure/strength of a molded product by using a mold model being designed on a computer; means for evaluating an analysis result, which determines an initial molding condition to be actually set in an injection molding machine on the basis of the analysis result being obtained by said molten material flow analysis means and provides a permissible range of a molding condition and data of an average thickness and a thin or thick part of the molded product; means for eliminating a molding defect, which infers causes of a molding defect in accordance with a relation between a deficiency of the molded product and a condition of a resin, mold, etc., stores both the first intelligent data base for inferring the causes of the molding defect and the second intelligent data base for evaluating the measures, and calculates a correction value of the molding condition after selecting the effective measures corresponding to the causes to be inferred by entering the data of the deficiency of the molded product, said first intelligent data base including measures prepared with a priority and said second intelligent data base being capable of converting the respective measures to an amount of each operating factor of the molding condition while inferring the measures for the inferred causes of the molding defect; and a man-machine user interface for entering the data of defective molded products into said molding defect elimination means while entering the molding condition being set by said analysis result evaluation means into the injection molding machine, resetting the correction value of the molding condition in the injection molding machine after revaluating the obtained correction value of the molding condition by said analysis result evaluation means, and repeating the correction and the reset until obtaining an optimum molding condition.
Claim 2
Dependent Claim
328 words
An optimum molding condition setting system for an injection molding machine comprising: means for analyzing a flow of a molten material, which carries out analyses of a resin flow, a resin a cooling and a structure/strength of a molded product by using a mold model being designed on a computer; means for evaluating an analysis result, which determines an initial molding condition to be actually set in an injection molding machine on the basis of the analysis result being obtained by said molten material flow analysis means and provides a permissible range of a molding condition and data of an average thickness and a thin or thick part of the molded product; means for eliminating a molding defect, which infers causes of a molding defect in accordance with a relation between a deficiency of the molded product and a condition of a resin, mold, etc., stores both the first intelligent data base for inferring the causes of the molding defect and the second intelligent data base for evaluating the measures, and calculates a correction value of the molding condition after selecting the effective measures corresponding to the causes to be inferred by entering the data of the deficiency of the molded product, said first intelligent data base including measures prepared with a priority and said second intelligent data base being capable of converting the respective measures to an amount of each operating factor of the molding condition while inferring the measures for the inferred causes of the molding defect; and a man-machine user interface for entering the data of defective molded products into said molding defect elimination means while entering the molding condition being set by said analysis result evaluation means into the injection molding machine, resetting the correction value of the molding condition in the injection molding machine after revaluating the obtained correction value of the molding condition by said analysis result evaluation means, and repeating the correction and the reset until obtaining an optimum molding condition.
Claim 3
Dependent Claim
71 words
An optimum molding condition setting system for an injection molding machine according to claim 1, wherein in case of entering the data of the defective molded products into the molding defect elimination means, a defective point is entered into a filling pattern diagram being obtained by the molten material flow analysis means so that the deficiency which occurs during a filling control process of the injection molding machine can be ascertained.
Claim 4
Dependent Claim
96 words
An the optimum molding condition setting system for an injection molding machine according to claim 1, wherein in case the analysis result evaluation means compares the correction values of the molding conditions such as a mold temperature, a resin temperature, an injection speed, a cool time, etc. being obtained by the molding defect elimination means, with permissible values being obtained by the molten material flow analysis means, an alarm message can be issued and/or the value of the molding condition can be corrected again when the correction value of the molding condition exceeds said permissible value.
Claim 5
Dependent Claim
47 words
An the optimum molding condition setting system for an injection molding machine according to claim 1, wherein data of a configuration of the model mold which are employed for the analysis by the molten material flow analysis means can be used by the molding defect elimination means.
Claim 6
Dependent Claim
57 words
An the optimum molding condition setting system for an injection molding machine according to claim 1, wherein the correction value of the molding condition being obtained by the molding defect elimination means can be analyzed by the molten material flow analysis means, evaluated by the analysis result evaluation means and then set in the injection molding machine.
Claim 7
Dependent Claim
55 words
An the optimum molding condition setting system for an injection molding machine according to any one of claims 1 to 5, wherein the system is connected to the injection molding machine via a communication line so as to automate both a transfer of data regarding the molding defect and a setting of the molding condition.
Claim 8
Dependent Claim
60 words
An the optimum molding condition setting system for an injection molding machine according to any one of claims 1 to 5, wherein the system is provided with an IC card capable of writing the molding condition and/or an operating state of the injection molding machine so that various data can be interchanged between the system and the injection molding machine.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.