JPH04316821A - Support system of automatic setting of molding condition - Google Patents

Abstract

PURPOSE:To make the automatic setting of optimum molding conditions possible by a method wherein external memory is used, in which know-how of skilled worker of injection molding is stored. CONSTITUTION:In an external memory 20 or recording medium, fundamental molding conditions A or molding know-how such as various operational equations for determining elements necessary for molding such as the rotational frequency of a screw, resin pressure and the like depending on the kind of resin and the shape of molded article are stored. An individual data input means 30 consists of a keyboard and the like connected to the system concerned. Individual data B per molding article is inputted in the means 30 on the interaction with the system. The inputted individual data B is displayed with a display means 90. An automatic setting means 40 of initial molding condition data consists of a CPU, which retrieves and calculates the fundamental molding conditions A of the external memory 20 on the basis of the individual data B inputted with the individual data input means 30 so as to set the initial molding data D for respective first transition runnings.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic setting support system for molding conditions in injection molding.

0002

[Prior Art] Generally, when performing injection molding, the molding conditions often vary greatly depending on the type and amount of raw materials and the shape of the mold, and it is necessary to perform many test runs to obtain the optimal molding conditions. was there. Furthermore, setting delicate molding conditions requires the experience and intuition, or so-called know-how, of skilled injection molding workers, and training such skilled workers has been a major issue. Furthermore, it has been difficult to convey such molding know-how when forming technical alliances with users.

[0003] In recent years, the molding process from plasticization to injection has come to be controlled by a computer program, and detailed molding conditions have to be entered and set using a keyboard, which requires a lot of time and effort.

0004

[Problem to be solved by the invention] This invention was proposed in view of the above-mentioned problems, and uses an external memory that stores the know-how of skilled injection molding workers to automatically set optimal molding conditions. The purpose of this project is to provide an automatic molding condition setting support system.

[0005]

[Means for solving the problem] That is, this invention
An external memory means storing basic molding conditions for each type of molded product, an individual data input means for inputting data for each individual molded product necessary for setting conditions for injection molding, and a means for inputting the input individual data. initial molding condition data automatic setting means for correspondingly searching the basic molding conditions stored in the external memory based on the basic molding conditions and calculating and setting initial molding condition data for each start-up operation; and the automatically set initial molding conditions. an initial molding condition data storage means for storing data, an internal molding condition data storage means for storing molding condition data for each start-up operation sequentially performed based on the initial molding condition data, and the initial molding condition data and an operation data storage means for storing the best final molding condition data of the start-up operation molding condition data as operation data;
The present invention relates to an automatic molding condition setting support system comprising a switching means for selectively switching between the initial molding condition data and the final molding condition data and writing the selected data into the operation data storage means.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a system configuration diagram showing an example of the molding condition automatic setting support system of the present invention, and FIG. 2 is a diagram of the procedure for performing molding using the system of the present invention.

As shown in FIGS. 1 and 2, the molding condition automatic setting support system of the present invention has an external memory 20.
and individual data input means 30, initial molding condition data automatic setting means 40, initial molding condition data storage means 50, internal molding condition storage means 60 for storing start-up operation molding conditions, operation data storage means 70, switching means 80, and a necessary display means 90, the well-known injection molding machine 1
Incorporated into 0.

The external memory 20 is a storage medium such as a well-known floppy disk, and stores tables such as molding temperature and resin specific gravity for each type of resin and the shape of the molded product, as well as molding information such as screw rotation speed and resin pressure. Basic molding conditions A, which are molding know-how such as various calculation formulas for determining all necessary elements, are stored. Examples of data tables and arithmetic expressions stored in the external memory 20 are shown below. a Temperature table by raw material, specific gravity table b Screw rotation and back pressure table by raw material c Injection speed table by raw material d Resin pressure table by raw material e Injection speed pattern table by molded product shape f Measuring position calculation formula g Injection filling time calculation formula h Injection holding pressure calculation formula i Injection holding pressure calculation formula j Cooling time calculation formula k Holding switching hydraulic pressure calculation formula l Mold clamping pressure calculation formula m Mold opening stroke calculation formula Others In addition, this external memory 20 is used by manufacturers and users to store molded products. A memory storing separately accumulated know-how can be used. Examples of the external memory 20 for each molded product are shown below. (1) General-purpose molding (2) Compact disc molding (3) Computer disc molding (4) Precision connector molding (5) Large automobile molding (6) Precision small thin molding (7) Lens molding (8) Beautiful colored daily necessities molding, etc.

The individual data input means 30 comprises a keyboard or the like connected to this system, and the individual data B for each molded product is inputted through interaction with the system. The input individual data B is displayed by the display means 90. The data inputted by this individual data input means 30 is specification data set for each molded product, such as raw material name, shot weight, and molded product wall thickness, examples of which are shown below. 1. Raw material name, grade 2. Shot weight of molded product
(g)3. Projected area of molded product
(cm2)4. Flow length of molded product
(mm)5. Average wall thickness of molded product (
mm)6. Gate cross section
(cm2)7. Shape classification number of molded product 8. Injection peak pressure max value (kgf/cm2
)9. Injection holding pressure max value (kgf/
cm2)10. Injection speed selection
(L,M,H)11. Cushion amount
(mm
)12. mold thickness
(mm)13. mold thickness

(mm)14. Mold opening stroke
(mm)15. Ejector stroke (mm) 16
．． Mold opening/closing speed selection (
L, M, H) Others

The initial molding condition data automatic setting means 40 is C.
PU, and based on the individual data B input by the individual data input means 30, the external memory 20
The basic molding conditions A stored in are searched and calculated to set initial molding condition data D for each start-up operation. In this embodiment, parameters C unique to the molding machine such as the screw diameter of the molding machine are stored in the internal memory of the automatic initial molding condition data setting means (CPU) 40, and this parameter C and the individual data input means 30 The basic molding conditions A in the external memory 20 are searched and calculated using the individual data B inputted by the controller 20, and if data B that does not satisfy the basic molding conditions A is input, a signal such as an alarm is sent. It looks like this.

[0011] The initial molding condition data automatic setting means 40
The initial molding condition data D set by is stored in the initial molding condition data storage means 50.

Since this initial molding condition data D is molding condition data for the startup operation of the injection molding machine 10 as described above, the injection molding machine 1 is switched by the known switching means 80.
It is switched to the operating data F of 0. This operating data F is stored in the operating data storage means 50 and used for actual operation of the injection molding machine.

Actual molding is sequentially carried out on a trial basis using the operation data F (start-up operation), and start-up operation molding condition data D1, D2, . . . Dn obtained by this start-up operation
are sequentially stored in the internal molding condition data storage means 60.

The start-up operation molding condition data are changed and molded until the desired molded product is obtained, and each time the start-up operation molding condition data D1, D2, D3, . . . Dn are stored in the internal molding conditions. The information is stored in the means 60.

[0015] The molded product is confirmed by visual inspection, etc., and among the start-up operation molding condition data, the one that was able to mold the best product is set as the final molding condition data E, and the switching means 8
0, and the driving data F is updated. The operation data F consisting of the determined molding condition data E is stored in the operation data storage means 70, and the main molding is thereby performed.

[0016]

[Effects of the Invention] As shown and explained above, according to the molding condition automatic setting support system of the present invention, injection molding conditions, which conventionally relied on the experience of skilled workers, can be easily set through interaction with the system. Now I can do it. In addition, since external memory is used, not only can molding data be managed reliably even if it becomes enormous, but
A floppy disk containing know-how can be provided to the user.

[Brief explanation of drawings]

FIG. 1 is a system configuration diagram showing an example of a molding condition automatic setting support system of the present invention.

FIG. 2 is a diagram illustrating the procedure for performing molding using the system of the present invention.

[Explanation of symbols]

10 Injection molding machine 20 External memory 30 Input means 40 Initial molding condition data automatic setting means 50 Initial molding condition data storage means 60 Internal molding condition data storage means 70 Operational data storage means 80 Conversion means A Basic molding conditions B Individual data D Initial Molding condition data D1 to Dn Start-up operation molding condition data E Final molding condition data F Operation data

Claims (1)

[Claims] [Claim 1] Basic molding conditions (A) for each type of molded product
an external memory means (20) in which is stored, an individual data input means (30) for inputting data (B) for each individual molded product necessary for setting injection molding conditions, and a initial molding condition data automatic setting means (40) for correspondingly searching the basic molding conditions stored in the external memory based on the basic molding conditions and calculating and setting initial molding condition data (D) for each start-up operation; an initial molding condition data storage means (50) for storing set initial molding condition data (D); and molding condition data (50) for each start-up operation sequentially performed based on the initial molding condition data (D). an internal molding condition data storage means (60) for storing the molding condition data (D1 to Dn); the initial molding condition data (D); E) and an operational data storage means (70) for storing the same as operational data (F), the initial molding condition data (D), and the final molding condition data (E).
A molding condition automatic setting support system comprising: a switching means (80) for selectively switching and writing the data into the operation data storage means.