WO1997029898A1 - Procede de collecte de donnees de moulage pour machines de moulage par injection et procede pour obtenir une condition de moulage - Google Patents
Procede de collecte de donnees de moulage pour machines de moulage par injection et procede pour obtenir une condition de moulage Download PDFInfo
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- WO1997029898A1 WO1997029898A1 PCT/JP1997/000415 JP9700415W WO9729898A1 WO 1997029898 A1 WO1997029898 A1 WO 1997029898A1 JP 9700415 W JP9700415 W JP 9700415W WO 9729898 A1 WO9729898 A1 WO 9729898A1
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- molding
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/4093—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine
- G05B19/40937—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine concerning programming of machining or material parameters, pocket machining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/766—Measuring, controlling or regulating the setting or resetting of moulding conditions, e.g. before starting a cycle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/76006—Pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/76083—Position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/7611—Velocity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76177—Location of measurement
- B29C2945/7618—Injection unit
- B29C2945/76187—Injection unit screw
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76177—Location of measurement
- B29C2945/7618—Injection unit
- B29C2945/76204—Injection unit injection piston cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76344—Phase or stage of measurement
- B29C2945/76381—Injection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76344—Phase or stage of measurement
- B29C2945/76397—Switch-over
- B29C2945/76404—Switch-over injection-holding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76929—Controlling method
- B29C2945/76939—Using stored or historical data sets
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35352—By making a testpiece
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/45—Nc applications
- G05B2219/45244—Injection molding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Definitions
- the present invention relates to a method for collecting molding data of an injection molding machine and a method for obtaining stable molding conditions using molding data collected by the collecting method.
- the condition setting work When performing an injection molding operation for the first time by mounting a new mold on an injection molding machine, first perform the condition setting work at the initial stage to perform various molding condition items, for example, injection molding cylinder. It is necessary to adjust the setting conditions such as temperature, injection pressure, injection speed, injection Z holding pressure switching position, screw back position, etc., and to determine the molding conditions so that good products can be obtained stably.
- the screw position related to weighing is based on the weight of the molded product molded in the overpack state, the specific gravity of the molding material, and the diameter of the injection screw.
- molding condition items that can obtain setting data that is accurate to the extent that it is a computational process.However, such as the cylinder temperature, injection pressure, injection speed, injection pressure switching position, etc.
- a method and a method for obtaining molding conditions are provided.
- the method of collecting molding data of the injection molding machine according to the present invention is based on the rough molding conditions under which condition setting operations are performed under different molding conditions, each of which includes a plurality of molding condition items, to obtain a normal molded product. Steps to be sought, steps to automatically determine a plurality of molding conditions similar to the determined rough molding conditions, and a set number of times or setting for each of the determined plurality of molding conditions A step of automatically performing continuous molding work for a time and collecting molding data for each molding condition.
- Each of the similar molding conditions can be automatically obtained by sequentially decreasing the molding condition value for each molding condition item in the rough molding condition by a set width.
- a host computer that manages the injection molding machine is Each molding data is collected, and similar molding conditions and each of the set number of times or set time are stored in the host computer, and the host computer Alternatively, the similar molding conditions and the set times or set times may be sequentially instructed to the injection molding machine from, and each molding data may be collected.
- FIG. 1 is a block diagram showing a main part of a control device of an injection molding machine for implementing a molding data collecting method of the present invention
- Figure 2 is a conceptual diagram showing the configuration of a host computer that manages the injection molding machine.
- Figure 3 is a conceptual diagram showing the connection between the host computer and the injection molding machine.
- FIG. 4 is a flowchart showing an outline of processing performed by a control device of the injection molding machine when collecting molding data.
- Fig. 5 is a flowchart showing the outline of the processing performed by the host computer when collecting molding data.
- FIG. 6 is a continuation of the flowchart of FIG.
- Figure 7 is a conceptual diagram showing the contents of the molding condition storage memory of the controller.
- FIG. 8 is a conceptual diagram showing a temporary molding condition file of a host computer.
- Figure 9 is a conceptual diagram showing the schedule management file of the host computer.
- FIG. 10 is a conceptual diagram showing a sampling data storage file of the host computer.
- FIG. 1 shows a main part of a control device 10 for driving and controlling an injection molding machine for implementing a molding data collecting method of the present invention.
- the control unit 10 is a CPU 25 for CNC which is a micro processor for numerical control, a CPU 18 for PC which is a micro processor for programmable controller, and servo control.
- Pressure and back pressure of the injection molding machine from the pressure detector on the injection molding machine side via the servo CPU 20, which is a micro processor for, and the AZD converter 16 CPU 17 for pressure monitoring for performing sampling processing and transmitting and receiving information between microprocessors by selecting mutual input / output via bus 22 Can be performed.
- the PC CPU 18 is connected to a ROM 13 that stores a sequence program for controlling the sequence operation of the injection molding machine and a RAMI 4 that is used for temporary storage of operation data.
- the CNC CPU 25 has a ROM 27 that stores an automatic operation program for controlling the entire injection molding machine, and a RAM 28 that is used for temporarily storing calculation data. Is connected.
- Servo CPU 20 and pressure monitor CPU 17 Each has a ROM 21 storing a control program dedicated to the servo control, a RAMI 9 used for temporary storage of data, and a sampling process of injection pressure and screw back pressure.
- a ROM 11 that stores a control program relating to, for example, and a RAMI 2 that is used for temporarily storing data are connected and connected.
- the servo CPU 20 drives the servo motors for each axis for clamping, injection, screw rotation, ejector, etc. based on commands from the CPU 20 power.
- Servo amplifiers are connected, and the output from the position / speed detector attached to the servo motor of each axis is fed back to the servo CPU 20.
- the current position of each axis is calculated by the Servo CPU 20 based on the feed knock pulse from the position S speed detector, and is updated and stored in the current position storage register of each axis.
- Fig. 1 only the servo amplifier 15 for one axis, the servomotor M and the position / velocity detector P are shown, but the configuration of each axis for clamp, injection, ejector, etc. everyone is the same. However, it is not necessary to detect the current position in the case of screw rotation, and only the speed needs to be detected.
- the interface 23 is an input / output interface for connecting to a host computer or the like.
- the manual data input device 29 with display is connected to the bus 22 via the CRT display circuit 26, allowing the user to select a graph display screen, select a function menu, and input various data. And a numeric keypad for entering numerical data. — And various function keys are provided.
- the non-volatile memory 24 is a memory for storing molding data and various setting values, parameters, macro variables, and the like relating to the injection molding operation, and is a memory for storing molding data, and has a small number of molding conditions to be executed.
- a molding condition storage memory that stores at least one set is provided. As shown in Fig. 7, this molding condition storage memory contains injection cylinder temperature, injection pressure, injection speed, injection Z holding pressure switching position, screw back position, and cushion. , D 2, ⁇ ⁇ ⁇ , D N2 and its molding condition values (set values) CI, C 2, ⁇ ⁇ ⁇ ,
- control device 10 has a data sampling function known in Japanese Patent Laid-Open Publication No. 6-170709, and the data sampling function collects data for each molding cycle. Temperature of the injection cylinder, injection pressure, injection speed, injection Z pressure switching position, screw back position, cushion amount, back pressure, etc. Same as above), molding cycle time and total! : Molding data such as required time and required injection time (the above items are not setting items) are detected and stored in the sampling data storage file of the nonvolatile memory 24. It is becoming.
- the CPU 18 for PC controls the sequence operation of the entire injection molding machine
- the CPU 25 for CNC controls the operation program of ROM 27 and the non-volatile memory 24.
- the servo CPU 20 performs the same operation as before, based on the pulse-distributed movement command for each axis and the position and speed feedback signals detected by the position / speed detector. Then, servo control such as position loop control, speed loop control, and current loop control is performed, so-called digital servo processing is performed, and drive control of the servo motors of each axis is performed.
- a plurality of injection molding machines 10 a, 10 b,..., Each having a control device 10 having the above-described configuration are provided.
- 10c (each molding machine number is determined) is connected to one host computer 100 via a data transmission path 103 (LAN etc.), and On the side of the host computer 1000, control relating to setting of similar molding conditions and each injection molding machine 10a, 10b,
- the host computer 100 is a conventional computer having an input device 102 having a keyboard and a mouse and a display device 101. It is composed of a personal computer or a minicomputer, and its storage device has a plurality of molding condition files for storing each of the aforementioned similar molding conditions. And the injection molding machines 10a, 10b, and 10b based on the molding conditions contained in the molding condition file.
- a function such as a monitor data save file for saving in accordance with the molding conditions is provided.
- the storage device a large-capacity hard disk capable of storing a large amount of data is desired.
- FIG. 4 is a flow chart showing the outline of the processing performed on the control device 10 side of the injection molding machines 10a, 10b,..., 10c when performing the test shot.
- FIGS. 5 and 6 are flowcharts showing the outline of the processing performed on the host computer 100 side.
- An operator who has a new mold and the like mounted on an injection molding machine first performs a trial and error condition setting operation under a plurality of different molding conditions in the same manner as before, and returns to normal. Find out the molding conditions (hereinafter referred to as rough molding conditions) that can provide a good molded product.
- the rough molding conditions are, in short, molding conditions under which normal molded products can be continuously obtained over a certain period of time.
- the correction and resetting of the molding conditions in condition setting and the drive control of the injection molding machine are performed by setting the flag F1 to the initial value 0 and the test file creation request key (with display). While the function key of the manual data input device 29 is not operated, the processing is performed by the processing of step S3 in FIG. 4, but the processing relating to the condition setting has already been performed. Because it is knowledge, it will not be explained here.
- step S2 when the operator who has completed the condition setting operation and obtained the rough molding conditions operates the test file creation request key, the control device 10 of the injection molding machine determines step S2. During processing, key operation by the operator is detected, and a test file creation request command, the molding machine number of the injection molding machine and the rough molding conditions, that is, a time after completion of the condition determination.
- the setting contents of various molding condition items stored in the molding condition memory of the control device 10 are stored in the host computer as C1, C2, ⁇ , and CN2 (see Fig. 7).
- the data is transferred to 100 (step S4), and a flag F1 indicating that the test is being executed is set (step S5).
- Step T1 step T14, step T20, and step # 24 and the background processing (not related to the present invention) indicated by step # 26 are repeated at predetermined intervals.
- the test file creation request command from the control device 10 of any of the injection molding machines is detected in the discriminating process of step T1
- the molding machine of the injection molding machine is returned.
- the number and the rough forming conditions see FIG. 7
- a process for obtaining some forming conditions similar to the rough forming conditions and setting the same in the schedule management file is started. .
- the host computer 100 which has detected the test file creation request command from the control device 10, first transmits the transferred molding machine number to the register R 1.
- the stored molding condition values C 1, C 2,..., C N2 of each of the transferred rough molding conditions are temporarily stored in the computer RAM.
- Each of the rough molding condition values C l, C 2,..., And C N2 is converted to a temporary molding condition file in the RAM of the host computer 100 (see FIG. 8) are stored as the temporary forming condition values 1, '2, ⁇ ,, C'N2 (step T2).
- the host computer 100 is a counter for accumulating and storing the total number of similar molding conditions created for the injection molding machine that has output the test file creation request command.
- R 2 and the value of the counter R 3 for integrating and storing the number of types of molding condition items created by changing the molding condition value for this injection molding machine are set to 0.
- the value of the counter R3 is incremented by 1 (Step T4), and the value of the counter R3, ie, molding is performed. It is determined whether or not the number of types of molding condition items created by changing the condition values has reached the number of types N2 of all molding condition items (step T5).
- a similar molding condition value is set by setting a similar molding condition value to the molding condition item which is not processed at the present time. Must be created and set in the schedule management file. Therefore, the host computer 100 determines the molding condition from the rough molding condition value C (R 3) of the molding condition item D (R 3) corresponding to the value of the counter R 3. Decrease the allowable limit width AC (R3) set in advance corresponding to the condition item D (R3), and set the appropriate condition value based on the rough forming condition value C (R3). The minimum value C (R 3) - ⁇ C (R 3) of the similar molding condition value that can be regarded as the value is calculated, and this value is used as the temporary molding condition value C '( Update storage is performed instead of R 3) (step T 6).
- the host computer 100 adds the molding condition item C (R3) to the rough molding condition value C (R3) of the molding condition item D (R3) corresponding to the value of the counter R3.
- the maximum value C (R 3) of the similar molding condition value that can be regarded as the maximum value C (R 3) + C (R 3) is obtained, and the current value of the provisional molding condition value C ′ (R 3) becomes the maximum value C (R 3) It is determined whether or not the value exceeds + (R3) (step T7).
- the current value of the temporary forming condition value (R 3) does not exceed the maximum value C (R 3) + AC (R 3)
- the current value of the temporary forming condition value C ′ (3) is the minimum value. (113)-AC (R 3) and the maximum value C (R 3) + m C (R 3). )
- the counter 100 increments the value of the counter R2 by one and updates the total number of similar molding conditions (step T8), the contents of the temporary molding condition file are updated.
- the values of C′1, C′2,..., And C′N2 are defined as one of the similar forming conditions of the rough forming conditions C1, C2,. Save it in the (R1, R2) spot of the schedule management file (step T9).
- the similar molding conditions C′1, C′2,..., C′N2 of the (Rl, R2) spot are the rough molding conditions C1 of the injection molding machine with molding machine number R1. , C 2,..., C N2
- the host computer 100 displays the display device 100.
- a guidance message is displayed in 1 and (R1, R2) Executes the setting and input operation of the number of test shots for performing continuous molding work under similar molding conditions for spots To the operator and wait for the operator's input operation (manual), or a preset initial value (pre-filter) corresponding to the molding condition item D (R3). 9), the number of test shots is determined (automatically), and the value is made to correspond to the above-mentioned temporary forming condition file, and the schedule as shown in FIG. 9 is obtained. It is saved in the (Rl, R2) spot of the rule management file (step T10).
- the host computer 100 sets the current value of the provisional molding condition value C ′ (R 3) of the molding condition item D (R 3) corresponding to the value of the counter R 3 to the molding value. After adding a preset step width d (R3) corresponding to the condition item D (R3) to obtain a new similar molding condition value (R3) (step Tl 1) The process proceeds to step T7, and the same processing operation as described above is repeatedly executed.
- the minimum molding condition value C (R 3) that can be regarded as an appropriate condition value based on the rough molding condition value C (R 3) C (R 3) From the maximum value C (R 3) + AC (R 3), multiple similar molding conditions with a step size of d (R 3) are generated.
- R1 line of the schedule management file corresponding to the injection molding machine the injection molding machine with the molding machine number of R1 .
- the order of registration of similar molding conditions changes the value of the molding condition value C '(R3) of similar molding conditions from C (R3) to C (R3)- ⁇ C (R3). After that, decide again to change from C (R 3) to C (R 3) + m C (R 3), or C (R 3) force> ⁇ (13 ⁇ 4 3) + It is also possible to decide again to change from C (R 3) to C (R 3) — AC (R 3) after changing it to C (R 3).
- the value of the molding condition value C ′ (R 3) is Either add continuously at a fixed step width d (R 3) (when d (R 3)> 0), or reduce it continuously to reduce the required time. Convenient in terms of power consumption (d (R 3) ⁇ 0).
- the molding condition value of the molding condition item D (R 3) is obtained by repeating the processing of steps T7 to Tl1.
- step T7 While registering similar molding conditions with only the value of C '(R3) changed one after another in the schedule management file, the current value of the temporary molding condition value C' (R3) If it is detected in step T7 that the value exceeds the maximum value C (R 3) + m C (R 3), the host computer 100 sets the temporary molding condition value C ′ ( (R 3) And return the contents of the temporary forming condition file to the initial rough forming condition values CI, C2, ..., CN2 (step T12), and again The process proceeds to step T4, and the value of the power counter R3 is incremented by one. The value of the counter R3 has reached the number N2 of types of all molding condition items. It is determined whether or not it is (step T5).
- step T6 and the repetition processing of steps T7 to Tl1 are executed in the same manner as described above, and the next molding condition item D (R3) Only the molding condition value C '(R 3) at the step d (R 3) with the minimum value C (R 3) — the maximum value from the AC (R 3) force to the maximum value C (R 3) + m C (R 3) Injection molding machines that generate multiple similar molding conditions by changing between them and create similar molding conditions
- step T5 when it is detected in step T5 that the value of the counter R3 has reached the number of types N2 of all the molding condition items, the host computer is activated.
- the file number storage register 100 sets the current value (final value) of the register R2 as the total number of similar molding conditions corresponding to the injection molding machine of the molding machine number R1.
- E (R1) and initializes the value of the index S (R1) indicating the location of the similar molding condition file to be transferred to the injection molding machine to 0 (step T13) ).
- the above processing is executed every time a test file creation command from any of the control devices 10 of the injection molding machines is detected, so the schedule management file shown in FIG. 9 is used.
- the file may store similar molding conditions of multiple injection molding machines in parallel, but the line of the schedule management file that uses the similar molding conditions will be Since the molding machine is identified by the molding machine number, the correspondence between the injection molding machine and the similar molding conditions is always kept one-to-one.
- the value of the convenient register E (R1) and the value of the index S (R1) which indicate the number of files, are also set according to the molding machine number of the injection molding machine. There will be no confusion during the transfer of the work.
- step S 6 Control in which the file creation request and the rough molding conditions are transferred to the host computer 100 in the processing in step S5, and the flag F1 is set.
- the process proceeds to the process of step S 6 through the determination process of step S 1. Transition is made to determine whether flag F2 is set.
- the flag F2 is set each time a test under a new similar molding condition is started, and a test under a similar similar molding condition is performed. It is reset every time it ends, and its initial value is 0. At this stage, since the initial value of the flag F2 is held at 0, the determination result of step S6 is false, and the control device M10 returns to the host computer.
- step S7 The file transfer instruction and the molding machine number of the injection molding machine are transmitted to the computer 100 (step S7), and the similar molding condition file from the host computer 100 is transmitted.
- the system enters a standby state waiting for the transfer of an oil or the input of a test end command (step S8, step S12).
- step T15 the host computer 100 increments the value of the index S (R4) corresponding to the injection molding machine of the molding machine number R1 by one increment (step C4). 16), the current value of the index 3 (13 ⁇ 44) is stored in the file number storage register E (R4) that stores the total number of similar molding conditions corresponding to the injection molding machine of molding machine number 14 It is determined whether or not the force has reached the value (step T17).
- the host computer 100 sets the similar molding conditions corresponding to the molding machine number R4. Based on the current value of the index S (R 4) and the value of the molding machine number R 4, similar molding conditions and similar conditions are obtained from the (R 4, S (R 4)) spot in the schedule management file. Then, the set values of the number of test shots set for this are read out, and those values are transferred to the injection molding machine of molding machine number R4 (step T18).
- the control device 10 transmits the similar molding condition.
- the molding condition value and the number of test shots are stored in the molding condition storage memory of the non-volatile memory 24 as data to be executed (step S9), and the flag F2 Is set to memorize the start of the test shot under the new similar molding conditions.
- the value of the shot number counter that counts the number of test shots under the similar molding conditions is initialized to 0 (step SI 0). Step S11).
- the controller 10 repeats steps S1, S6, and S6 until the value of the number-of-shots counter reaches the set number of shots.
- the count-up operation (step S16) of several shots is repeatedly performed, and the nonvolatile memory 24 is executed every time one cycle of the injection molding operation is performed. Save the molding data for the number of shots set in the sampling data storage file inside. If the molding time is set in place of the number of shots in step T10, the timer is set in step S9 and the timer is set. Should be started, and the timer time and the set time should be compared in the process of step S14.
- step S14 when it is detected in step S14 that the value of the number-of-shots counter has reached the set number of shots in the determination processing of step S14, the control device 10 sets the nonvolatile memory.
- the host computer 10 stores the molding data of the number of setting shots stored in the sampling data storage file in the memory 24 and the molding machine number of the injection molding machine. The value is transferred to 0 (step S17), and the flag F2 is reset (step S18).
- Sampled data stored in non-volatile memory 24 Stored in 1T file Since the number of molding data is only as many as the number of setting shots for one similar molding condition, the number is at most about several tens.
- the host computer 100 0 detects the input of the collected data from the control device 10 in the discriminating process in step T 20, and registers the transmitted molding machine number in the register. It is stored in R 4 (step T 21), and based on the current value of the index S (R 4) and the value of the molding machine number R 4 corresponding to the injection molding machine of the molding machine number R 4.
- the contents of the molding data transferred from the controller 10 are stored in a molding data storage memory such as a hard disk (step T22).
- Figure 10 shows an example of molding data storage memory that stores the contents of molding data.
- Each item of the molding data storage memory includes the injection cylinder temperature, injection pressure, injection speed, injection Z holding pressure switching position, screw backing position, cushion amount, back pressure, etc.
- Configurable items In addition to the detected values of D 1, D 2, ⁇ , DN 2, the molding cycle time that can only detect the result, the total S required time, and the required time of the injection station Items D N2 + 1, ⁇ ⁇ ⁇ Includes information such as D NX.
- Each spot on the schedule management file only stores an index indicating the storage location of similar molding conditions and the storage location of the corresponding molding data. However, in fact, similar molding conditions and a large amount of molding data are not impaired on this schedule management file.
- step S8 On the other hand, on the control device S10 side where the flag F2 was reset in the processing of step S18, then the discrimination of step S1 and step S6 is performed. After the process, the process shifts to the process of step S7 again, the file transfer command and the molding machine number are transmitted to the host computer 10, and a new test shot is performed. The process enters a wait state for inputting data of the toe file (step S8, step SI2).
- the above processing is performed when the current value of the target S (R 4) corresponding to the injection molding machine R 4 that has output the file transfer command is the total number of similar molding conditions E (R 4) of the injection molding machine R 4 Until the time is reached (see step T17), the process is repeated on each side of the host computer 100 and the control device 10 in exactly the same way as described above. Therefore, test shots based on all the E (R 4) similar molding conditions set for the injection molding machine with molding machine number R 4 are equal to the set number of times corresponding to each condition. Only the operation is performed by the injection molding machine R 4.
- the molding condition memory of the host computer 100 includes various molding condition items Dl, D2, ..., DN2. The molding data for each of the similar molding conditions generated by selecting the molding condition items one item at a time and changing the molding condition values little by little is the number of setting test shots. It will be stored in order of minutes.
- each of the similar molding conditions is basically the same as the molding condition items Dl, D2,. From C 1 -AC 1 to C 1 + ⁇ C 1, changing the step size d 1, setting each of the other forming condition items to the same as the rough forming condition, and setting each of the similar forming conditions to the rough forming condition. Of the molding conditions, only the item D2 of Dl, D2, ⁇ , DN2 is selected, and the molding condition value is set to C2 ⁇ ⁇ 02. ⁇ Up to 2 steps with the step width d 2, and set the values of the other molding conditions to be the same as the rough molding conditions.
- Conditional items D l, D 2, ⁇ ⁇ ⁇ ⁇ , select only the item of D N2, and set the molding condition value from C N2— ⁇ C N2 to C N2 + ⁇ C N2 d Change with N2 and change the value of other molding condition items.
- was produced in the same as the molding condition are each of similar molding conditions.
- the fact that the current value of the index S (R 4) has reached the total number E (R 4) of similar molding conditions corresponding to the injection molding machine of the molding machine number R 4 indicates that the host computer 100 side.
- the end command is output from the host computer 100 to the injection molding machine of the molding machine number R4 (Step T17). ), This is done in step S12.
- the detected control device 1Q resets the flag F1 in the processing of step S13, so that the processing of step S15 is not performed. End the test shot.
- the value of R 4 in the index S (R 4) is set individually according to the molding machine number of the injection molding machine, it is necessary to drive a plurality of injection molding machines simultaneously. Even in the case of performing a test shot, the relationship between the injection molding machine and the line of the schedule management file always has a one-to-one correspondence. There will be no confusion in file transfer or termination command input / output.
- the administrator of the host computer 100 or the operator of each injection molding machine waits for the completion of the test for the desired injection molding machine, and then the machine number, Also, specify the molding condition items for which you want to know the effect of changing the molding condition values on the molding stability, and set the molding condition items to the injection molding machine (and the mold attached to it).
- the data of the effect on the molded article is displayed on the display device 101 (see step T24). For example, the molding data when the molding condition value C'y of the molding condition item Dy is changed for the injection molding machine of the molding machine number X (and the mold mounted thereon). If you want to know the change in data stability, you can enter (x, Dy).
- the host computer 100 searches the X-line data of the schedule management file for the molding condition of the molding condition item Dy.
- the molding data that is, the molding condition value corresponding to the molding condition item D y is different from the molding condition value C ′ y belonging to the range of C y — mm C y to C y + m C m.
- the corresponding molding data is read out (where Cy is the initial rough forming condition data of the molding condition item Dy), and for example, as shown in FIG. 10, the value of C ′ y (step size)
- the molding data for the number of test shots is displayed for each dying (the molding condition value for each dy) (see step T25).
- the same display operation is performed by updating the value of the address index (index indicating the file column in FIG. 9) corresponding to each of the values, and performing the same display operation.
- each of the similar molding condition values C ′ y belonging to the range of C y + AC y from the force (in short, the molding condition of the molding condition item D y
- the corresponding molding data can be read out and displayed.
- the value of C ′ y that gives the smallest width between the maximum value and the minimum value for each molding condition item as a whole is taken as the optimal value of the molding condition item D y You can choose.
- each molding condition item can be viewed comprehensively. Whether similar molding conditions with the value of C'y that gives the smallest width between the maximum value and the minimum value for each item are used as the optimal molding conditions as they are (in this case, the molding condition items Molding condition value corresponding to D y
- Each of the above processes is a simple four arithmetic operation (a process for finding the width of the maximum and minimum values for each molding condition) and a comparison of the magnitude relationship between the values (comparison of the magnitude relationship between the maximum value and the minimum value)
- the data file select the molding condition that minimizes the range between the maximum value and the minimum value, or combine the molding condition of the molding condition item that minimizes the range between the maximum value and the minimum value
- an appropriate program is set up, the entire process from collection of molding data to acquisition of optimal molding conditions can be achieved. It can be automated by an injection molding machine or a host computer. If it is troublesome to display molding data as shown in Fig. 10 individually for each similar molding condition value and evaluate the molding conditions, it is troublesome.
- the molding condition items D y are selected one by one, and the horizontal axis is changed in accordance with the molding condition items D y, and the respective molding condition values C ′ y (Cy ⁇ Cy ⁇ C ′) y ⁇ C y + AC y in the range of y), and the vertical axis is the standard deviation of each molding data obtained in place of the average, maximum and minimum values. Molding condition value
- Each molding condition may be displayed, and the optimum molding condition value C ′ y for each molding condition item D y may be determined from this graph.
- the host computer 100 is used as a server for storing data, and the host computer 100 is controlled by the control unit 10 of the injection molding machine. To obtain the necessary information and display it on the manual data input device 29 with display so that the operator of the injection molding machine can confirm the information on the spot. Good.
- the control data of each shot is stored in the control device 10 of the injection molding machine until the value of the number of shots counter reaches the set number of shots.
- the molding data of the control device 100 is transferred to the host computer 100 and stored.
- the memory capacity of the control device 10 is limited, and of course, if the memory of the control device 10 has a sufficient capacity, all molding data can be used. Remain resident on the side of the controller 10 and memorize it In such a case, the host computer 100 is not always necessary, and the schedule management and data arithmetic processing etc.
- the control may be performed individually for each control device 10.
- a plurality of similar molding conditions are stored in the injection molding machine, and similar molding conditions are changed by designating a molding condition number from the host computer to collect molding data. It is also possible to do so.
- processing procedures for achieving each of the functions described above should be concentrated on the host computer or deployed on the injection molding machine side. It is up to you to decide whether to deploy them separately or to deploy them on both sides.
- an operator waits on the spot for completion of a test shot for every similar molding conditions, or an operator for resetting of similar molding conditions, etc. There is no need to cut off the injection molding machine, during which the operator can engage in other tasks. Therefore, there is no need to spare time for test work in consideration of the deterioration of the operating efficiency (running cost) of the operator. It is possible to collect molding data for acquiring conditions, and by evaluating this data to determine the optimal molding conditions, it is possible to achieve more stable molding work. .
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geometry (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97902705A EP0822051B1 (en) | 1996-02-15 | 1997-02-17 | Molding data collecting method for an injection molding machine |
US08/930,978 US6051170A (en) | 1996-02-15 | 1997-02-17 | Method of collecting molding data and obtaining molding condition for injection molding machine |
DE69726349T DE69726349T2 (de) | 1996-02-15 | 1997-02-17 | Verfahren zum Erfassen von Prozessdaten einer Spritzgiessmaschine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8/50745 | 1996-02-15 | ||
JP05074596A JP4236709B2 (ja) | 1996-02-15 | 1996-02-15 | 射出成形機における成形データ収集方法および成形条件取得方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997029898A1 true WO1997029898A1 (fr) | 1997-08-21 |
Family
ID=12867386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/000415 WO1997029898A1 (fr) | 1996-02-15 | 1997-02-17 | Procede de collecte de donnees de moulage pour machines de moulage par injection et procede pour obtenir une condition de moulage |
Country Status (5)
Country | Link |
---|---|
US (1) | US6051170A (ja) |
EP (1) | EP0822051B1 (ja) |
JP (1) | JP4236709B2 (ja) |
DE (1) | DE69726349T2 (ja) |
WO (1) | WO1997029898A1 (ja) |
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JPH10124131A (ja) * | 1996-10-22 | 1998-05-15 | Fanuc Ltd | 制御装置に接続される機器の管理方法 |
JP3519604B2 (ja) * | 1998-05-28 | 2004-04-19 | ファナック株式会社 | 射出成形機における成形条件再生装置 |
US20030211188A1 (en) * | 2000-06-19 | 2003-11-13 | Kachnic Edward F. | Wireless image processing method and device therefor |
US6592355B2 (en) | 2000-12-16 | 2003-07-15 | Ovalon Vision Solutions, Llc | Part-forming machine having an in-mold integrated vision system and method therefor |
US6592354B2 (en) | 2000-12-01 | 2003-07-15 | Avalon Vision Solutions, Llc | Part-forming machine having an infrared vision inspection system and method for verifying the presence, absence and quality of molded parts therein |
EP1301323A4 (en) * | 2000-06-19 | 2006-09-27 | Edward Kachnic | INTEGRATED CONTROLLER FOR MACHINE FOR FORMING PARTS |
GB0015760D0 (en) * | 2000-06-27 | 2000-08-16 | Secretary Trade Ind Brit | Injection moulding system |
US20040059452A1 (en) * | 2000-08-23 | 2004-03-25 | Edward Kachnic | Sensory inspection system and method thereof |
JP3824503B2 (ja) * | 2001-06-11 | 2006-09-20 | 日精樹脂工業株式会社 | 射出成形機の成形条件設定方法 |
JP3973466B2 (ja) * | 2001-06-19 | 2007-09-12 | 株式会社リコー | 成形用型、成形用型の製造方法、成形用型の製造システム、及び成形方法 |
JP2003001685A (ja) * | 2001-06-25 | 2003-01-08 | Fanuc Ltd | 成形技術収集装置 |
EP1689573A4 (en) * | 2003-11-20 | 2011-02-09 | William A Nicol | SENSOR SYSTEM AND METHOD THEREFOR |
US7534378B2 (en) * | 2004-03-03 | 2009-05-19 | Rexam Prescription Products Inc. | Plastic forming process monitoring and control |
US7580771B2 (en) * | 2004-10-19 | 2009-08-25 | Husky Injection Molding Systems Ltd. | Intelligent molding environment and method of configuring a molding system |
US8883054B2 (en) | 2009-06-18 | 2014-11-11 | Progressive Components International Corporation | Mold monitoring |
JP5551243B2 (ja) | 2009-06-18 | 2014-07-16 | プログレッシブ コンポーネンツ インターナショナル コーポレーション | 電子サイクルカウンタ |
BR112014006750A2 (pt) | 2011-10-10 | 2017-06-13 | Progressive Components Int Corp | sistema e método para monitorar atividades de ferramenta |
JP5654064B2 (ja) | 2013-02-13 | 2015-01-14 | ファナック株式会社 | 射出成形機の表示装置および表示方法 |
DE102015117237B3 (de) * | 2015-10-09 | 2017-03-23 | Kraussmaffei Technologies Gmbh | Verfahren zur Bestimmung eines realen Volumens einer spritzgießfähigen Masse in einem Spritzgießprozess |
US11498254B2 (en) | 2017-01-31 | 2022-11-15 | Nissei Plastic Industrial Co., Ltd. | Method and device for assisting molding condition setting technical field |
AT522623B1 (de) * | 2019-06-03 | 2022-01-15 | Engel Austria Gmbh | Verfahren zum Überprüfen der Eignung eines Formgebungswerkzeugs |
ES2891139A1 (es) * | 2020-07-15 | 2022-01-26 | Comercial De Utiles Y Moldes Sa | Sistema de trazabilidad para piezas inyectadas |
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Also Published As
Publication number | Publication date |
---|---|
EP0822051A1 (en) | 1998-02-04 |
JPH09216265A (ja) | 1997-08-19 |
EP0822051A4 (en) | 2002-08-28 |
EP0822051B1 (en) | 2003-11-26 |
JP4236709B2 (ja) | 2009-03-11 |
DE69726349T2 (de) | 2004-09-16 |
US6051170A (en) | 2000-04-18 |
DE69726349D1 (de) | 2004-01-08 |
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