JP7189267B2 - Molding condition setting method and injection molding machine - Google Patents

Description

The present invention relates to a molding condition setting method and an injection molding machine suitable for use in setting molding conditions in an injection molding machine that performs molding according to a specific molding method.

Conventionally, a widely known injection molding method involves injecting resin into a mold consisting of a fixed mold and a movable mold which are clamped by a mold clamping device with a predetermined clamping force. Molding is performed by injection filling, but in such a general injection molding method, basically, the mold clamping conditions of the mold clamping device are set as fixed conditions, and the injection conditions of the injection device are set based on this. Therefore, even if the injection conditions are set accurately and appropriately, the resin filled in the mold is affected by temperature fluctuations in the mold and the mold clamping mechanism, etc., and the final molded product. Quality and homogeneity are also susceptible to drawbacks. In addition, since the molding conditions are mainly set on the injection device side, accurate metering is required, including injection conditions that require accuracy such as injection speed, speed switching position, speed pressure switching position, injection pressure, holding pressure, etc. It is necessary to set various molding conditions including weighing conditions such as the required weighing value, and the setting work for the molding conditions is not easy, and the operation control during molding becomes complicated. Since a series of controls such as control over pressure and holding pressure are performed, the molding cycle time tends to be long, and there is a limit to shortening the molding cycle time and further increasing mass productivity.

Therefore, the applicant of the present application has already proposed a suitable molding method for an injection molding machine that solves these problems in Patent Document 1. The molding method of Document 1 is intended to ensure high quality and homogeneity of molded products, facilitate the setting of molding conditions, and improve mass productivity by shortening the molding cycle time. Specifically, as a mold clamping device, at least a mold clamping device that enables natural compression of the resin in the mold as it solidifies is used. In addition to finding and setting the molding injection pressure and mold clamping force that can create a mold gap and mold a good product, the mold clamping force clamps the mold clamping device during production, and the molding injection pressure is set as the limit pressure. After the injection device is driven to inject and fill the mold with resin, the molded product is removed after a predetermined cooling time has elapsed.

International publication WO2011/161899

However, the molding method for the injection molding machine in Patent Document 1 described above still has the following problems to be solved.

First, in order to create a predetermined mold gap between the movable mold and the fixed mold during injection filling, and to determine and set the molding injection pressure and mold clamping force that enable good product molding, when setting the molding conditions, the molding injection It is necessary to make settings while confirming the relationship between set values such as pressure and mold clamping force and the mold gap generated corresponding to these set values. displayed graphically as a monitoring waveform. For this reason, there is a problem to be solved in that even if an experienced person can set the molding conditions relatively easily, it is difficult for a beginner to set the molding conditions.

Secondly, even for those who have experience setting molding conditions, it is necessary to carry out trial molding in advance to find the molding injection pressure and mold clamping force. From the point of view, it cannot be said that it is necessarily sufficient, and there are still issues to be further improved from the viewpoint of optimizing the fine adjustment of the molding conditions and setting more accurate molding conditions.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a molding condition setting method and an injection molding machine that solve the problems existing in the background art.

In order to solve the above-described problems, the molding condition setting method according to the present invention uses a mold clamping device Mc that enables natural compression of the resin R at least as the resin R in the mold C solidifies, and at least: When setting the molding conditions including the molding mold clamping force Pc that creates a predetermined mold gap Lc between the movable mold Cm and the fixed mold Cc when the resin R is injected and filled, and the molding injection pressure Pi that becomes the limit pressure Ps, a time A pattern operation function unit 3 having a mold opening pattern display unit 2p for graphically displaying a mold opening pattern Xp having a change characteristic of the mold gap Lc with respect to t, and at least one deformation operation unit 3c for deforming the mold opening pattern Xp. In addition, a molding condition conversion processing unit 4 is provided in which the operation amount Lck of the deformation operation unit 3c, the deformation amount of the graphically displayed mold opening pattern Xp, and at least one movement physical quantity are linked, and when setting the molding conditions, , the mold opening pattern Xp is graphically displayed on the mold opening pattern display unit 2p, and the mold opening pattern Xp is deformed by a deformation amount corresponding to the operation amount Lck of the deformation operation unit 3c, and the molding condition conversion processing function unit 4 to obtain at least one motion physical quantity corresponding to the deformation amount of the mold opening pattern Xp, correct the motion physical quantity that is the basis of the mold opening pattern Xp based on this motion physical quantity, and set the molding conditions based on the corrected motion physical quantity. characterized by performing

On the other hand, in order to solve the above-described problems, the injection molding machine M according to the present invention includes a mold clamping device Mc that enables natural compression of the resin R as it solidifies at least in the mold C, and at least: a molding machine controller Ms for setting molding conditions including a molding mold clamping force Pc that creates a predetermined mold gap Lc between the movable mold Cm and the fixed mold Cc when the resin R is injected and filled, and a molding injection pressure Pi that becomes the limit pressure Ps; When constructing an injection molding machine comprising A pattern operation function unit 3 is provided for displaying the deformation operation units 3c on the display 2, and the operation amount Lck of the deformation operation units 3c, the deformation amount of the graphically displayed mold opening pattern Xp, and at least one movement physical quantity are displayed. A linked molding condition conversion processing function unit 4 is provided, and when molding conditions are set, the mold opening pattern Xp is graphically displayed on the mold opening pattern display unit 2p, and deformation corresponding to the operation amount Lck of the deformation operation unit 3c is performed. While deforming the mold opening pattern Xp by the amount, at least one movement physical quantity corresponding to the deformation amount of the mold opening pattern Xp is obtained by the molding condition conversion processing function unit 4, and based on this movement physical quantity, the basis of the mold opening pattern Xp and a molding machine controller Ms that corrects the physical quantity of operation and sets molding conditions based on the corrected physical quantity of operation.

According to a preferred aspect of the present invention, the deformation operation portions 3c include a mold opening amount Ac of the mold gap Lc of the mold opening pattern Xp, a mold opening period At of the mold gap Lc of the mold opening pattern Xp, and a mold opening pattern Xp. and the mold closing timing Ae of the mold gap Lc of the mold opening pattern Xp. , at least one or more of the mold clamping force, injection pressure, injection speed, and injection time. The mold opening timing As is linked to at least one or more of the injection speed, injection pressure, mold clamping force, and filling pressure step number as physical quantities of operation, and the mold closing timing Ae can be linked to at least one or more of the injection speed, injection pressure, mold clamping force, and the number of stages of filling pressure as physical quantities of operation. On the other hand, the mold opening pattern Xp displayed in the mold opening pattern display section 2p when setting the molding conditions may be a provisional mold opening pattern Xp set after the trial molding, or may be based on past molding history data or simulation. A temporary mold opening pattern Xp that is set based on production data may be used. Furthermore, the pattern operation function unit 3 can be configured using a touch panel 2t that deforms the mold opening pattern Xp by sliding operation of operation keys Kc, Kt, Ks, and Ke displayed on the display 2. Specifically, is a first transformation operation part 3c that transforms the mold opening amount Ac of the mold gap Lc of the mold opening pattern Xp with the operation key Kc; A second transformation operation portion 3t, a third transformation operation portion 3s for transforming the mold opening timing As of the mold gap Lc of the mold opening pattern Xp by the operation key Ks, and a mold closing timing Ae of the mold gap Lc of the mold opening pattern Xp to the operation key Ke. It is possible to include one or more of the fourth deformation operation parts 3e that are deformed by .

According to the molding condition setting method and the injection molding machine M according to the present invention, the following remarkable effects can be obtained.

(1) When molding conditions are set, the mold opening pattern Xp is graphically displayed on the mold opening pattern display section 2p, and the mold opening pattern Xp is deformed by a deformation amount corresponding to the operation amount Lck of the deformation operation section 3c. At least one motion physical quantity corresponding to the deformation amount of the mold opening pattern Xp is determined by the molding condition conversion processing function unit 4, and based on this motion physical quantity, the motion physical quantity that is the basis of the mold opening pattern Xp is corrected and corrected. Since the molding conditions are set according to the physical quantity of motion, even a beginner can relatively easily set the molding conditions, and even an experienced operator can set the molding conditions efficiently in a short time. By optimizing fine adjustment of conditions, more accurate molding conditions can be set.

(2) According to a preferred embodiment, the deformation operation portions 3c are provided with the mold opening amount Ac of the mold gap Lc of the mold opening pattern Xp, the mold opening period At of the mold gap Lc of the mold opening pattern Xp, and the mold gap of the mold opening pattern Xp. If one or more of the mold opening timing As of Lc and the mold closing timing Ae of the mold gap Lc of the mold opening pattern Xp are deformed, most of the parts of the mold opening pattern Xp that become one chevron shape can be deformed. Therefore, it is possible to cover a sufficient range and detailed adjustment in the mold opening pattern Xp by properly using and combining the deformation operation portions 3c.

(3) According to a preferred embodiment, if at least one or more motion physical quantities of mold clamping force, injection pressure, injection speed, and injection time are associated with the mold opening amount Ac, the mold opening amount Since it is possible to link Ac and the motion physical quantity with sufficient correlation, it is possible to adjust the mold opening amount Ac with high accuracy.

(4) According to a preferred embodiment, if at least one or more operating physical quantities of injection pressure, mold clamping force, injection speed, and resin temperature are associated with the mold opening period At, the mold opening period Since At and motion physical quantity can be linked with a sufficient correlation, it is possible to adjust the mold opening period At with high accuracy.

(5) According to a preferred embodiment, if at least one or more motion physical quantities of injection speed, injection pressure, mold clamping force, and number of stages of filling pressure are associated with the mold opening timing As, mold opening Since the timing As and the motion physical quantity can be linked with a sufficient correlation, the mold opening timing As can be adjusted with high precision.

(6) According to a preferred embodiment, if at least one or more of the injection speed, injection pressure, mold clamping force, and number of stages of filling pressure are associated with the mold closing timing Ae, the mold closing Since the timing Ae and the motion physical quantity can be linked with a sufficient correlation, the mold closing timing Ae can be adjusted with high precision.

(7) According to a preferred embodiment, if the mold opening pattern Xp set after trial molding is used as the temporary mold opening pattern Xp displayed in the mold opening pattern display section 2p when setting the molding conditions, Since the mold opening pattern Xp obtained in the molding condition setting process performed before starting production by the injection molding machine M can be used as it is, the molding conditions can be further optimized by finely adjusting the mold opening pattern Xp. be able to.

(8) According to a preferred embodiment, the mold opening pattern Xp set based on past molding history data or simulation data is provisionally displayed in the mold opening pattern display section 2p when molding conditions are set. If it is used as a typical mold opening pattern Xp, the process of setting molding conditions before starting production can be omitted, so speed and efficiency can be improved when setting molding conditions, and big data and AI (artificial intelligence) Utilization can contribute to further optimization of molding conditions.

(9) According to a preferred embodiment, when configuring the pattern operation function unit 3, the operation keys Kc, Kt, Ks, and Ke displayed on the display 2 are slid to transform the mold opening pattern Xp using the touch panel 2t. With this configuration, the operator can deform and adjust a predetermined portion of the mold opening pattern Xp in accordance with the operation amount only by sliding the predetermined operation keys Kc. It is possible to easily change the physical quantity of motion related to the setting of molding conditions.

(10) According to a preferred embodiment, when configuring the pattern operation function part 3, the first deformation operation part 3c for deforming the mold opening amount Ac of the mold gap Lc of the mold opening pattern Xp, the mold gap Lc of the mold opening pattern Xp A second deformation operation portion 3t that deforms the mold opening period At, a third deformation operation portion 3s that deforms the mold opening timing As of the mold gap Lc of the mold opening pattern Xp, and a mold closing timing Ae of the mold gap Lc of the mold opening pattern Xp. By including one or more of the fourth deformation operation portions 3e that deform the mold opening pattern Xp and each deformation operation portion 3c . And by combining them, fine adjustments can be made easily and efficiently.

A setting screen view of a display of an injection molding machine according to a preferred embodiment of the present invention and an extracted enlarged view of a mold opening pattern display portion displayed on this setting screen view, Overall configuration diagram of the same injection molding machine, Block system diagram of the control system of the same injection molding machine, A flow chart for explaining the processing procedure of the molding condition setting method according to the preferred embodiment of the present invention, Explanatory diagram of the operation of the mold opening pattern deformed by the operation amount of the first deformation operation part in the same molding condition setting method, Explanatory drawing of the operation of the mold opening pattern deformed by the operation amount of the second deformation operation part in the same molding condition setting method, Explanatory drawing of the operation of the mold opening pattern deformed by the operation amount of the third deformation operation part in the same molding condition setting method, Explanatory diagram of the operation of the mold opening pattern deformed by the operation amount of the fourth deformation operation section in the same molding condition setting method, A relational diagram of motion physical quantities linked by the operation amount of the deformation operation unit in the same molding condition setting method, A flow chart for explaining a processing procedure according to a modified example of the molding condition setting method, A flow chart for explaining the processing procedure at the time of trial molding in a molding method that can use the same molding condition setting method, A data graph showing the quality result of the molded product against the mold clamping force for explaining the processing when molding by the molding method that can use the same molding condition setting method, Characteristic diagram of changes in injection pressure, injection speed and mold gap with respect to time during molding of the same injection molding machine, A flow chart for explaining the processing procedure at the time of production of a molding method that can use the same molding condition setting method, Schematic diagram showing the state of the mold in the same injection molding machine,

Next, preferred embodiments according to the present invention will be presented and explained in detail based on the drawings.

First, in order to facilitate understanding of the molding condition setting method according to the present embodiment, an injection molding machine M capable of carrying out the same molding condition setting method will be described with reference to FIGS. 1 to 3 and 11 to 15. do.

First, the configuration of the mechanical system of the injection molding machine M will be described. As shown in FIG. 2, the injection molding machine M includes an injection device Mi and a mold clamping device Mc. The injection device Mi includes a heating cylinder 21 having an injection nozzle 21n at the front end and a hopper 21h at the rear. to be arranged. The screw drive unit 23 includes an injection cylinder (hydraulic cylinder) 24 containing a single-rod type injection ram 24r. A shaft of a metering motor (oil motor) 25 attached to an injection cylinder 24 is spline-connected to the rear end of the .

On the other hand, as the mold clamping device Mc, a mold clamping device is used that enables natural compression of the resin R at least as the resin R (see FIG. 15) inside the mold C solidifies. The illustrated mold clamping device Mc is a direct pressure type hydraulic mold clamping device that displaces the movable mold Cm by a driving ram 30 p of a mold clamping cylinder (hydraulic cylinder) 30 . If such a direct pressure type hydraulic mold clamping device is used, the hydraulic behavior of the mold clamping device Mc itself can be directly used to allow the resin R in the mold C to be naturally compressed. Natural compression can be reliably executed, and control can be facilitated.

The exemplified mold clamping device Mc includes a stationary platen 31 which is spaced apart from the mold clamping cylinder 30 and whose position is fixed, and a plurality (four pieces) installed between the fixed platen 31 and the mold clamping cylinder 30. and a movable platen 33 slidably loaded on the tie bars 32 . Then, the movable mold Cm is attached to the movable platen 33 and the fixed mold Cc is attached to the fixed platen 31 . The fixed mold Cc and the movable mold Cm constitute a mold C. As shown in FIG. Thereby, the mold clamping cylinder 30 can open and close the mold C and clamp the mold.

On the other hand, reference numeral 35 denotes a hydraulic circuit, which includes a variable discharge hydraulic pump 36 and a valve circuit 37 serving as a hydraulic drive source. The hydraulic pump 36 includes a servomotor 39 that drives the hydraulic pump section 36 to rotate. 40 denotes a rotary encoder for detecting the rotation speed of the servomotor 39 . Further, the hydraulic pump section 36 incorporates a pump body 41 configured by a swash plate type piston pump. Therefore, if the inclination angle of the swash plate (swash plate angle) of the hydraulic pump unit 36 is increased, the stroke of the pump piston is increased, and the discharge flow rate is increased. The stroke becomes smaller and the discharge flow rate decreases. Therefore, by setting the swash plate angle to a predetermined angle, it is possible to set a fixed discharge flow rate in which the discharge flow rate (maximum displacement) is fixed at a predetermined value. The suction port of the hydraulic pump section 36 is connected to the oil tank 41t, the discharge port of the hydraulic pump section 36 is connected to the primary side of the valve circuit 37, and the secondary side of the valve circuit 37 is connected to the injection molding machine M Hydraulic actuators including injection cylinder 24, metering motor 25, mold clamping cylinder 30, etc. Therefore, the valve circuit 37 is provided with switching valves (electromagnetic valves) connected to the injection cylinder 24, the metering motor 25, the mold clamping cylinder 30, and the like. Each switching valve is composed of one or more valve parts and necessary auxiliary hydraulic parts. , has a switching function related to discharge.

Thus, by variably controlling the rotation speed of the servomotor 39, the discharge flow rate and discharge pressure of the variable discharge hydraulic pump 36 can be varied. etc., and can control each operation process in the molding cycle. If such a variable discharge hydraulic pump 36 is used, the pump capacity can be set to a fixed discharge flow rate (maximum capacity) of a predetermined size, and the discharge flow rate and discharge pressure can be varied based on the fixed discharge flow rate. Control by the control system can be carried out easily and smoothly.

Next, the configuration of the control system of the injection molding machine M will be described. The main part of the control system is provided with a molding machine controller Ms shown in FIGS. The molding machine controller Ms includes a controller main body 51 . The controller main body 51 has a computer function including hardware such as a CPU and an internal memory. Therefore, the internal memory stores a control program (software) 51p for executing various control processes including various arithmetic processes and sequence control processes, and includes a data memory 51m capable of storing a database Fd and various data. .

In particular, the data memory 51m includes a mold opening pattern file Ff in which the mold opening pattern Xp set based on past molding history data or simulation creation data is registered, and the control program 51p stores It includes a control program for executing the molding condition setting method, drives hardware such as a CPU and an internal memory, and has various functions for executing the molding condition setting method together with the display 2 described later. That is, the molding machine controller Ms provides the display 2 with a mold opening pattern display section 2p that graphically displays a mold opening pattern Xp having a change characteristic of the mold gap Lc with respect to time t, and at least one display that deforms the mold opening pattern Xp. A pattern operation function unit 3 for displaying deformation operation units 3c is provided, and an operation amount Lck of the deformation operation units 3c, which will be described later, a deformation amount of a graphically displayed mold opening pattern Xp, and at least one movement physical quantity are linked. The molding condition conversion processing function unit 4 is provided. The molding condition conversion processing function unit 4 graphically displays the mold opening pattern Xp on the mold opening pattern display unit 2p of the display 2 when setting the molding conditions, and the deformation amount corresponding to the operation amount Lck of the deformation operation unit 3c. The mold opening pattern Xp is deformed by the molding condition conversion processing function unit 4, and at least one movement physical quantity corresponding to the amount of deformation of the mold opening pattern Xp is obtained. A function of correcting the physical quantity of motion and setting the molding conditions based on the corrected physical quantity of motion is realized. Specific contents of each of these functions will be described later.

A display 2 shown in FIGS. 1 to 3 is attached to the molding machine controller Ms. The display 2 includes a display body 2m and a touch panel 2t attached to the display body 2m. The display body 2m and the touch panel 2t are connected to the controller body 51 via a display interface 53. Therefore, various setting operations, selection operations, and the like can be performed using the touch panel 2t. The display 2 has a function of displaying various types of information, and particularly functions as the mold opening pattern display section 2p shown in FIG. 1 used in the molding condition setting method according to the present embodiment. FIG. 1 shows a setting screen Vs related to injection and metering, and since a part of this setting screen Vs is provided with a waveform display section Vsg, this waveform display section Vsg functions as a mold opening pattern display section 2p. )do. The mold opening pattern display section 2p may of course be displayed as a separate window on the setting screen Vs. Since the waveform display part Vsg has a function of graphically displaying temporal changes in the mold gap Lc, the mold position, which will be described later, from at least the start of injection into the mold C to the end of cooling of the mold C (end of cooling time). The change characteristic of the mold gap Lc detected by the detector 62, that is, the mold opening pattern Xp can be displayed. In the waveform display section Vsg, the horizontal axis is the time [second] axis and the vertical axis is the die gap Lc [mm]. In the mold opening pattern Xp, Ac is the mold opening amount, At is the mold opening time, As is the mold opening timing, and Ae is the mold closing timing.

Further, the molding machine controller Ms is attached with a servo amplifier 52 shown in FIG. The output section of the servo amplifier 52 is connected to the servo motor 39 described above, and the encoder pulse input section of the servo amplifier 52 is connected to the rotary encoder 40 . Further, the servo amplifier 52 is provided with a molding injection pressure Pi (limit pressure Ps) and a mold clamping force Pc from the controller body 51, and a built-in speed limiter is provided with a speed limit value VL. A motor drive current output from the servo amplifier 52 is supplied to the servo motor 39 to drive the servo motor 39 . Encoder pulses obtained from the rotary encoder 40 are applied to the servo amplifier 52, and minor loop feedback control is performed with respect to the rotation speed.

On the other hand, a mold position detector 62 is attached to the outer surface of the mold C, and this mold position detector 62 is connected to the controller body 51 . The die position detector 62 has a function of detecting the size of the die gap Lc due to the relative positions of the movable die Cm and the fixed die Cc, that is, the die opening amount As. A pressure sensor 42 for detecting oil pressure and a temperature sensor 43 for detecting oil temperature are provided on the primary side of the valve circuit 37 in the hydraulic circuit 35 . The mold position detector 62, the pressure sensor 42 and the temperature sensor 43 are each connected to the sensor port of the molding machine controller Ms. Furthermore, as shown in FIG. 2, the above-described valve circuit 37 is connected to the control signal output port of the molding machine controller Ms.

Next, a specific injection molding method using the injection molding machine M will be described with reference to FIGS. 11 to 15. FIG. This injection molding method is basically the molding method described in WO2011/161899 already proposed by the present applicant.

For molding, first, basic molding conditions are set. First, the injection pressure on the injection device Mi side is initialized (step S31). The injection pressure at this time can be set based on the capability (driving force) of the injection device Mi. Since the injection pressure in this case does not need to be accurately obtained as an absolute value, the magnitude of the hydraulic pressure detected by the pressure sensor 42 in the hydraulic circuit 35 connected to the injection cylinder 21 may be used, or the injection pressure converted by calculation may be used. Pressure may be used.

Also, the mold clamping force on the mold clamping device Mc side is initialized (step S32). The mold clamping force at this time can be set based on the capacity (driving force) of the mold clamping device Mc. Since the mold clamping force in this case does not need to be accurately obtained as an absolute value, the magnitude of the hydraulic pressure detected by the pressure sensor 42 in the hydraulic circuit 35 connected to the mold clamping cylinder 30 may be used, or converted by calculation. A clamping force may be used.

The hydraulic circuit 35 is switched to the side of the mold clamping device Mc by a valve circuit 37 during mold clamping and functions as a hydraulic circuit on the side of the mold clamping device Mc, and is switched to the side of the injection device Mi by the valve circuit 37 during injection. and functions as a hydraulic circuit on the injection device Mi side. If the hydraulic pressure in the hydraulic circuit 35 is used when obtaining the injection pressure and the mold clamping force, it is possible to easily set the mold clamping force Pc and the molding injection pressure Pi, which will be described later. Then, by performing optimization processing on the initially set injection pressure, the molding injection pressure Pi to be used during production is obtained, and by performing optimization processing on the initially set mold clamping force, the mold clamping force used during production is determined. A force Pc is obtained (steps S33, S34).

An example of a method of optimizing the clamping force and injection pressure will now be described with reference to FIG. First, trial molding is performed using the initially set mold clamping force and injection pressure. Specifically, when a molding start key (not shown) is turned on, a mold clamping operation is performed, and trial molding is performed with the mold C under the initially set conditions. In the case of illustration, the initially set mold clamping force is 40 [kN]. FIG. 12 shows an example of the results of trial molding using the initially set mold clamping force (40 [kN]) and injection pressure.

Also, Lc indicated by a phantom line in FIG. 13 represents the mold gap, that is, the size of the mold opening amount As. The size of this mold opening amount As gradually increases during injection filling, and when injection filling is completed, the resin is cooled and gradually decreases due to the natural compression action of the mold clamping device Mc. Therefore, if the size of the mold opening amount As is within an appropriate range, degassing and compression of the resin R (natural compression) are performed satisfactorily, and an appropriate range of clearance (residual clearance Lcr) is generated after cooling. do. In the molding condition setting method according to the present embodiment, the change in the mold opening amount As is used as the mold opening pattern Xp. In FIG. 13, Vd indicates the actual injection speed, and Pd indicates the actual injection pressure.

On the other hand, referring to FIG. 13, when the mold clamping force is 40 [kN], the mold opening amount As is 0, and the residual gap is also 0. In this case, the mold opening amount As is the maximum opening amount that occurs during injection filling, and the residual gap is the remaining opening amount after a predetermined cooling period has passed after injection filling. A mold clamping force of 40 [kN] is a large value, so it is at level 0 (best) where no burrs occur, sink marks at level 4 (defective), warpage at level 3 (slightly poor), and gas venting. indicates level 3 (slightly poor). After that, as shown in FIG. 13, the magnitude of the mold clamping force and the magnitude of the injection pressure are reduced step by step, and trial molding is performed at each stage, whereby the fixed mold Cc and the movable mold The mold gap and residual gap between Cm are measured, and the quality of the molded product G (see FIG. 15(c)) is observed (steps S35 and S36).

Although FIG. 13 does not include injection pressure data, optimization of the injection pressure is based on the condition that an inter-mold distance Lc is generated between the movable mold Cm and the fixed mold Cc at the time of injection filling and that a good product can be molded. In addition, the minimum value that can be set or a value in the vicinity thereof can be used as the molding injection pressure Pi. Specifically, as shown in FIG. 13, when the mold clamping force is reduced, the injection pressure is also reduced as appropriate, and a size is selected before the resin R does not normally fill the mold C. can. Then, the obtained molding injection pressure Pi is set as a limiter pressure Ps for the production injection pressure (step S37). According to the results shown in FIG. 13, when the mold clamping force is 14, 15, 16 [kN] in the range Zu, the mold gap Lc is in the range of 0.03 to 0.20 [mm], which is considered good. meet. In addition, the level 0 (best) in which none of the defects such as burrs, sink marks, and warpage occurs, and the level 0 (best) in gas venting satisfy the conditions of obtaining good molded products. Therefore, the mold clamping force Pc is selected from three mold clamping forces 14, 15, and 16 [kN], and the selected mold clamping force is the molding mold clamping force Pc when the mold C is clamped during production. (step S38).

Furthermore, in the case of FIG. 13, the burrs can be removed after the molded product is taken out, and even if there is a small amount of burrs, there are many cases where the product can be used as a non-defective product. A low degree of burr generation indicated by (normal) does not immediately lead to defective products. Therefore, considering the data shown in FIG. 13, it is possible to select the mold clamping force 12, 13 [kN] in the range Zus indicated by the phantom line depending on the type of molded product. FIG. 13 shows explanatory data for setting the mold clamping force Pc and the molding injection pressure Pi. Therefore, in actual setting, the desired mold clamping force Pc and molding injection pressure Pi can be obtained by changing the mold clamping force several times, for example, to 40, 30, 20, 10, etc. can. In this case, the magnitudes of the mold clamping force and the injection pressure may be arbitrarily set by the operator, or may be obtained automatically or semi-automatically using an auto-tuning function provided in the injection molding machine M in combination. When using the auto-tuning function, it is possible to easily obtain the mold clamping force immediately before burrs occur.

On the other hand, a speed limit value VL is set for the injection speed of the injection device Mi (step S39). This speed limit value VL does not necessarily need to be set, but by setting it, even if the injection speed Vd becomes excessively high, the die C, the injection screw, etc. are mechanically protected. be able to. Therefore, the speed limit value VL is set to a value that can mechanically protect the die C, the injection screw, and the like. If there are other necessary items, they are set (step S40).

From the above, basic molding conditions are obtained. By the way, as described above, the injection molding method shown in this embodiment generates a predetermined mold gap Lc between the movable mold Cm and the fixed mold Cc at the time of injection filling, and the molding injection pressure Pi and mold Since the clamping force Pc is obtained and set, when setting the molding conditions, while confirming the relationship between the set values such as the molding injection pressure Pi and the mold clamping force Pc, and the mold gap Lc generated corresponding to these set values. The magnitudes of these physical quantities are graphically displayed as monitoring waveforms on the display 2 of the molding machine controller Ms. For this reason, there is a problem that it is not easy for a beginner to set conditions, and even an experienced person cannot set accurate molding conditions more easily and quickly.

The molding condition setting method according to the present embodiment is for supporting the setting of the basic molding conditions described above, and even if the obtained molding conditions are temporary molding conditions, The molding condition setting method enables fine adjustments to be made more easily, and the overall molding conditions to be set more quickly and efficiently.

Next, the main components of the injection molding machine 1 that can implement the molding condition setting method according to the present embodiment will be described with reference to FIGS. 1 to 9. FIG.

In carrying out the molding condition setting method according to this embodiment, the display 2 and the molding machine controller Ms described above are used. As shown in FIG. 1, the display 2 includes a mold opening pattern display section 2p that graphically displays the change characteristics of the mold gap Lc with respect to time t, that is, the mold opening pattern Xp. One deformation operation section 3c, for example, includes four deformation operation sections 3c, 3t, 3s, and 3e. The pattern operation function unit 3 is provided for realizing the function of (1).

In this case, as shown in FIG. 1, one deformation operation section 3c can be configured using a touch panel 2t that deforms the mold opening pattern Xp by sliding the touched operation key Kc. Further, the other deformation operation portions 3t, 3s, and 3e can be configured in the same manner as the deformation operation portion 3c, and are arranged near the four corners of the rectangular mold opening pattern display portion 2p in which the mold opening pattern Xp is displayed. In addition, it is desirable that the movement direction of each operation key Kc coincides with the deformation direction of the mold opening pattern Xp. As described above, when configuring the pattern operation function unit 3, if the touch panel 2t that deforms the mold opening pattern Xp by sliding the operation keys Kc, Kt, Ks, and Ke displayed on the display 2 is used, The operator only needs to slide the predetermined operation keys Kc..., and the predetermined parts of the mold opening pattern Xp can be deformed and adjusted according to the amount of operation. can be easily changed.

Specifically, as shown in FIGS. 1 and 5, the first deformation operation unit 3c has a function of deforming the mold opening amount Ac of the mold gap Lc of the mold opening pattern Xp. It is arranged on the upper right of the mold opening pattern display portion 2p, and the operation key Kc is made slidable in the vertical direction. In FIG. 5, the operation key Kc is slid to the upper position Kcu indicated by the phantom line, that is, moved by the movement amount Lck, and the peak position of the mold opening amount Ac is deformed to the upper position Acu (Xpu) indicated by the phantom line. example. Similarly, by sliding the operation key Kc to the lower position Kcd indicated by the phantom line, the peak position of the mold opening amount Ac can be changed to the lower position Acd (Xpd) indicated by the phantom line.

The second deformation operation section 3t has a function of deforming the mold opening period At of the mold gap Lc of the variable pattern Xp, and as shown in FIG. Allow it to slide horizontally. In FIG. 6, the operation key Kt is slid to the left position Ktp indicated by the phantom line, that is, moved by the movement amount Ltk, and the mold opening period At is transformed into the short mold opening period Atp (Xpp) indicated by the phantom line. Give an example. Similarly, if the operation key Kt is slid to the right position Ktq indicated by the phantom line, the mold open period At can be transformed into the long mold open period Atq (Xpq) indicated by the phantom line.

The third deformation operation section 3s has a function of deforming the mold opening timing As of the mold gap Lc of the mold opening pattern Xp. Ks is made laterally slidable. In FIG. 7, the operation key Ks is slid to the right position Ksq indicated by the phantom line, that is, moved by the movement amount Lsk, and the mold opening timing As is changed to the early mold opening timing Asf (Xpsf) indicated by the phantom line. Give an example. Similarly, if the operation key Ks is slid to the left position Ksp indicated by the phantom line, the mold opening timing As can be changed to the late mold opening timing Asr (Xpsr) indicated by the phantom line.

The fourth deformation operation section 3e has a function of changing the mold closing timing Ae of the mold gap Lc of the mold opening pattern Xp. allows to slide horizontally. In FIG. 8, the operation key Ke is slid to the right position Keq indicated by the phantom line, that is, moved by the movement amount Lek, and the mold closing timing Ae is changed to the early mold closing timing Aef (Xpef) indicated by the phantom line. Give an example. Similarly, if the operation key Ke is slid to the left position Kep indicated by the phantom line, the mold closing timing Ae can be changed to the late mold closing timing Aer (Xper) indicated by the phantom line.

Thus, when configuring the pattern operation function unit 3, the first deformation operation unit 3c for deforming the mold opening amount Ac of the mold gap Lc of the mold opening pattern Xp, the mold opening period At of the mold gap Lc of the mold opening pattern Xp a second deformation operation portion 3t for deforming the mold opening pattern Xp, a third deformation operation portion 3s for deforming the mold opening timing As of the mold gap Lc of the mold opening pattern Xp, and a mold closing timing Ae of the mold gap Lc of the mold opening pattern Xp By including one or more of the four deformation operation portions 3e, it becomes possible to deform almost all portions of the mold opening pattern Xp that has a single chevron shape, and visually distinguish the mold opening pattern Xp and each deformation operation portion 3c. can be associated with , the proper use and combination of the deformation operation parts 3c can cover a sufficient range and detailed adjustment in the mold opening pattern Xp, and can be easily and efficiently adjusted.

On the other hand, the molding machine controller Ms controls the operation amounts Lck, Ltk, Lsk, and Lek of the deformation operation units 3c, 3t, 3s, and 3e, the deformation amount of the graphically displayed mold opening pattern Xp, and a plurality of (generally is provided with a molding condition conversion processing function unit 4 in which at least one (1) motion physical quantity is linked. Thus, when molding conditions are set, a temporary mold opening pattern Xp is graphically displayed on the mold opening pattern display section 2p, and the mold opening pattern Xp is displayed by a deformation amount corresponding to the operation amount Lck of the deformation operation section 3c. In addition to deformation, the molding condition conversion processing function unit 4 obtains at least one motion physical quantity corresponding to the deformation amount Lcu of the mold opening pattern Xp. can be modified, and molding conditions can be set by the modified physical quantity of motion.

The association between the deformation amount of the mold opening pattern Xp and the plurality of motion physical quantities can be set as shown in FIG. In FIG. 9, priority levels A, B, C, . . . indicate that side A has the highest priority. The mold opening amount Ac is desirably linked to at least one or more of the mold clamping force, injection pressure, injection speed, and injection time as motion physical quantities. With this setting, it is possible to link the mold opening amount Ac and the motion physical quantity with a sufficient correlation, so that the mold opening amount Ac can be adjusted with high precision. In addition, the number of stages of filling pressure, resin temperature, etc. can be linked as the operating physical quantity.

The mold opening period At is desirably linked to at least one or more of injection pressure, mold clamping force, injection speed, and resin temperature as the operating physical quantity. With this setting, it is possible to link the mold opening period At and the physical quantity of motion with sufficient correlation, so that the mold opening period At can be adjusted with high accuracy. In addition, as the working physical quantity, it is possible to link the working physical quantity such as the number of charging pressure stages and the injection time.

The mold opening timing As is desirably linked to at least one or more of injection speed, injection pressure, mold clamping force, and the number of steps of filling pressure as working physical quantities. With this setting, it is possible to link the mold opening timing As and the motion physical quantity with sufficient correlation, so that the mold opening timing As can be adjusted with high precision. In addition, as the operating physical quantity, the operating physical quantity such as injection time, resin temperature, etc. can be linked.

The mold closing timing Ae is desirably linked to at least one or more of injection speed, injection pressure, mold clamping force, and the number of stages of filling pressure as physical quantities of operation. With this setting, it is possible to link the mold closing timing Ae and the motion physical quantity with a sufficient correlation, so that the mold closing timing Ae can be adjusted with high precision. In addition, as the operating physical quantity, the operating physical quantity such as resin temperature and injection time can be linked.

Therefore, for example, if the operation amount Lck of the deformation operation unit 3c is given, the molding condition conversion processing function unit 4 can display the mold opening pattern graphically by the deformation amount associated with the operation amount Lck. Xp is deformed, and the motion physical quantity corresponding to the deformation amount of the mold opening pattern Xp, that is, the mold clamping force, the injection pressure, the injection speed, the injection time, . . . Based on the obtained operational physical quantity obtained by the arithmetic processing such as the above, the operational physical quantity that forms the basis of the mold opening pattern Xp is corrected. The data registered in the data table can be obtained in advance through experiments or the like, and each data is collected as big data during production and updated to optimum data by an AI (artificial intelligence) function.

Next, the molding condition setting method according to this embodiment will be described according to the flowchart shown in FIG. 4 while referring to each drawing.

In the molding condition setting method according to the present embodiment, provisional molding conditions are first set (step S1). In this case, as the provisional molding conditions, the molding conditions obtained by steps S31-S40 based on FIG. 11 described above, that is, the provisional molding conditions that have not been optimized can be used.

In this case, depending on the type of molded product, there are many cases where it is desired to make fine adjustments such as increasing the mold opening amount Ac or advancing the mold closing timing Ae. At this time, conventionally, it was necessary to perform trial molding again for confirmation after manually changing the operating physical quantity that affects the size of the mold opening amount Ac, such as slightly increasing the injection pressure Pi. By using the molding condition setting method according to the form, fine adjustment at this stage can be easily performed.

A specific processing procedure will be described below. First, the molding condition adjustment mode is selected on the setting screen Vs shown in FIG. 1 (step S2). As a result, the mold opening pattern Xp is displayed on the waveform display section Vsg (or the window screen) shown in FIG. 1, and the mold opening pattern Xp based on the provisional molding conditions is also displayed (step S3). The mold opening pattern Xp at this time is the same as the change graph of the mold gap Lc (mold opening amount Ac) shown in FIG. This state is shown in FIG.

On the other hand, the operator deforms the mold opening pattern Xp by operating the deformation operation parts 3c, 3t, 3s, and 3e. Now, as an example, it is assumed that the mold opening amount Ac is desired to be slightly increased. In this case, the deformation operation section 3c shown in FIG. 1 is selected, and the operation key Kc shown in FIG. 5 is touched to perform an upward sliding operation (step S4). As a result, this operation amount Lck is given to the molding condition conversion processing function unit 4, and from the molding condition conversion processing function unit 4, data concerning the deformation amount Lcu corresponding to this operation amount Lck and data concerning the physical quantity of motion are sent. Output (step S5). Then, the graphically displayed mold opening pattern Xp is deformed according to the deformation amount Lcu (step S6). In addition, the motion physical quantity corresponding to this deformation amount Lcu is output, and a plurality of motion physical quantities that form the basis of the mold opening pattern Xp are corrected (step S7).

In this case, as shown in FIG. 9, corrections such as decreasing the mold clamping force, increasing the injection pressure, increasing the injection speed, and lengthening the injection time are performed in order to increase the mold opening amount Ac. Although the mold opening amount Ac has been described above, the mold opening time At, the mold opening timing As, and the mold closing timing Ae can also be deformed while visually confirming the mold opening pattern Xp (steps S8, S4...).

After optimizing the mold opening pattern Xp, that is, optimizing the molding conditions by the above fine adjustment, trial molding is performed under the obtained molding conditions to confirm the molding conditions (step S9). At this time, if further fine-tuning is required. Similar adjustment operations are performed (steps S10, S4, . . . ). On the other hand, if it is confirmed that good molding has been performed, molding conditions are determined (steps S10 and S11). Thus, if the mold opening pattern Xp set after the trial molding is used as the temporary mold opening pattern Xp for the mold opening pattern Xp displayed in the mold opening pattern display section 2p when setting the molding conditions, the injection molding machine Since the mold opening pattern Xp obtained in the molding condition setting process performed before starting production by M can be used as it is, the molding conditions can be further optimized by finely adjusting the mold opening pattern Xp.

On the other hand, as the provisional mold opening pattern Xp, it is also possible to use the mold opening pattern Xp of the mold opening pattern file Ff in which the past molding history data, simulator creation data, etc. are registered.

FIG. 10 shows a flowchart of a processing procedure in this case as a modified example. 10, the same steps as in FIG. 4 are given the same reference numerals to clarify the configuration thereof, and detailed description thereof will be omitted.

First, a molded product type similar to the molded product to be produced is selected (step S21). As a result, the mold opening pattern Xp selected from the mold opening pattern file Ff is read (step S22). Then, the read mold opening pattern Xp is displayed in the mold opening pattern display section 2p as a provisional mold opening pattern Xp (step S23). The displayed mold opening pattern Xp can be confirmed, and if there is no need for fine adjustment, it can be determined as the molding conditions to be used as they are (steps S24, S11). On the other hand, when performing fine adjustment, the molding condition adjustment mode is selected on the setting screen Vs shown in FIG. 1 (step S2). As a result, while confirming the mold opening pattern Xp displayed in the mold opening pattern display section 2p, adjustment processing of the mold opening pattern Xp (step SD), that is, adjustment processing similar to steps S4 to S8 shown in FIG. Furthermore, the same processing as steps S9 to S11 shown in FIG. 4 can be performed.

In this way, the mold opening pattern Xp set based on the past molding history data or the simulated data is used as the mold opening pattern Xp displayed in the mold opening pattern display section 2p when the molding conditions are set. If used as pattern Xp, the process of setting molding conditions before starting production can be omitted, so speed and efficiency can be improved when setting molding conditions, and big data and AI (artificial intelligence) can be used. , can contribute to further optimization of molding conditions.

Therefore, according to the molding condition setting method (injection molding machine M) according to this embodiment, as a basic method, at least the resin R can be naturally compressed as the resin R in the mold C solidifies. using the mold clamping device Mc, at least when the resin R is injected and filled, the molding mold clamping force Pc that creates a predetermined mold gap Lc between the movable mold Cm and the fixed mold Cc, and the molding injection pressure Pi that becomes the limit pressure Ps When setting molding conditions including A pattern operation function unit 3 having portions 3c is provided, and molding condition conversion processing is performed in which the operation amount Lck of the deformation operation unit 3c, the deformation amount of the graphically displayed mold opening pattern Xp, and a plurality of motion physical quantities are linked. A part 4 is provided to graphically display the mold opening pattern Xp in the mold opening pattern display part 2p when molding conditions are set, and deform the mold opening pattern Xp by a deformation amount corresponding to the operation amount Lck of the deformation operation part 3c. At the same time, the molding condition conversion processing function unit 4 obtains a plurality of motion physical quantities corresponding to the deformation amount of the mold opening pattern Xp, and corrects the motion physical quantity that is the basis of the mold opening pattern Xp based on these motion physical quantities. Since the molding conditions are set according to the operating physical quantity, even a beginner can relatively easily set the molding conditions, and even an experienced person can set the molding conditions efficiently in a short time. , fine adjustment of molding conditions can be optimized and more accurate molding conditions can be set.

By using the molding conditions set in this manner, the following molding process can be performed. The molding process procedure during production will be described below according to the flow chart shown in FIG. 14 while referring to FIG.

First, by switching the valve circuit 37 and controlling the servomotor 39, the metering motor 25 of the injection device Mi is driven to plasticize the resin R and prepare for injection (step S41). This molding method does not require a weighing process for accurately weighing the resin R, unlike a general molding method. That is, although the weighing operation in the general weighing process is performed, weighing control for obtaining an accurate weighing value is not performed. In other words, the operation is to add the resin R before the resin R becomes insufficient. Also, by switching the valve circuit 37 and controlling the servomotor 39, the mold clamping cylinder 27 of the mold clamping device Mc is driven to clamp the mold C so that the mold clamping force becomes the mold clamping force Pc. (Step S42). The state of the mold C at this time is shown in FIG. 15(a).

Next, by switching the valve circuit 37 and controlling the servomotor 39, the injection cylinder 24 of the injection device Mi is driven, and the resin R is injected from the injection start time ts (see FIG. 13) (step S43). In this case, the screw 21 should be advanced by rated operation, and speed control and pressure control for the screw 21 are unnecessary. As a result, the mold cavity is filled with the plasticized and melted resin R in the heating cylinder 22 (step S44). As the resin R is filled, the injection pressure Pd (FIG. 13) increases. Then, when it approaches the limit pressure Ps and reaches the limit pressure Ps, control for maintaining the limit pressure Ps, that is, control for preventing overshooting is performed, and the injection pressure Pd becomes the limit pressure Ps (molding injection pressure Pi). (steps S45, S46). Therefore, substantial one-pressure control is performed in the injection operation. The injection speed in this case is Vd in FIG.

Further, the mold cavity is filled with the resin R, and the mold C is pressurized by the resin R, creating a mold gap Lc between the fixed mold Cc and the movable mold Cm (step S47). This die gap Lc has an allowable range of 0.03 to 0.20 [mm], and good degassing is carried out, and defect-free molding of good products is carried out. The state of the mold C at this time is shown in FIG. 15(b). On the other hand, as time passes, the solidification of the resin R in the mold cavity progresses, and along with this solidification, the resin R is compressed (natural compression) (step S48).

When the set cooling time has elapsed, the valve circuit 37 is switched and the servomotor 39 is controlled to drive the mold clamping cylinder 27 and move the movable mold Cm backward to open the mold. By switching and controlling the servomotor 39, the ejecting cylinder is driven to eject the molded product G adhering to the movable mold Cm (steps S49 and S50). Thereby, the molded article G is taken out, and one molding cycle is completed. The cooling time Tc can be set in advance as the elapsed time from the injection start time ts. Further, as shown in FIG. 13, at the time te after the cooling time has passed, the residual gap Lcr between the fixed mold Cc and the movable mold Cm is reduced by the preset mold clamping force Pc and molding injection due to natural compression of the resin R. The pressure Pi provides an allowable range of 0.01 to 0.10 [mm], ensuring natural compression of the resin R in the mold cavity and ensuring high quality and homogeneity in the molded product G. . The state of the mold C at this time is shown in FIG. 15(c). Thereafter, when the next molding is to be continued, similarly, the resin R is plasticized to prepare for injection, and thereafter, processes such as mold clamping, injection, cooling, etc. may be performed in the same manner (steps S51, S41, S42...).

Although preferred embodiments including modified examples have been described in detail above, the present invention is not limited to such embodiments, and the gist of the present invention can be found in the configuration, shape, quantity, technique, etc. of the details. Changes, additions, and deletions can be made arbitrarily within a range that does not deviate.

For example, although a reflection-type distance measuring sensor has been exemplified as the mold position detector 62, various sensors such as a proximity sensor that can detect gaps and the like in a non-contact manner can be used. Further, although the direct pressure type mold clamping device Mc has been exemplified, a toggle type mold clamping device Mc that uses a predetermined mold clamping region may be used. Furthermore, the deformation operation units 3c, . Although the function of deforming As and the mold closing timing Ae of the mold gap Lc of the mold opening pattern Xp has been shown, one or more of these may be provided. Furthermore, the mold opening amount Ac is linked to at least one or more of the mold clamping force, injection pressure, injection speed, and injection time as operating physical quantities, and the mold opening period At is linked to at least the following physical operating quantities: One or more of the injection pressure, mold clamping force, injection speed, and resin temperature are linked, and at least one of the injection speed, injection pressure, mold clamping force, and the number of stages of filling pressure is used as an operating physical quantity for the mold opening timing As. Or two or more are linked, and the mold closing timing Ae is linked to at least one or two of the injection speed, injection pressure, mold clamping force, and filling pressure stage number as physical quantities of operation. is an example, and other various physical quantities of operation can be added according to the type of resin, etc., and can be used in various combinations. On the other hand, the pattern operation function unit 3 is configured using the touch panel 2t that deforms the mold opening pattern Xp by sliding the operation keys Kc, Kt, Ks, and Ke displayed on the display 2, but the same is true. It may be configured by a separate functional unit having a function.

INDUSTRIAL APPLICABILITY The molding condition setting method and the injection molding machine according to the present invention can be used when setting molding conditions in an injection molding machine that performs molding according to a specific molding method.

2: display, 2t: touch panel, 2p: mold opening pattern display unit, 3c: transformation operation unit, 3: pattern operation function unit, 3c: first transformation operation unit, 3t: second transformation operation unit, 3s: third transformation Operation unit, 3e: fourth deformation operation unit, 4: molding condition conversion processing function unit, C: mold, Cm: movable mold, Cc: fixed mold, R: resin, M: injection molding machine, Mc: mold clamping device , Ms: molding machine controller, Lc: mold gap, Pc: mold clamping force, Ps: limit pressure, Pi: molding injection pressure, t: time, Xp: mold opening pattern, Lck...: operation amount, t: time, Ac: mold opening amount, At: mold opening period, As: mold opening timing, Ae: mold closing timing, Kc: operation key, Kt: operation key, Ks: operation key, Ke: operation key

Claims (11)

Using a mold clamping device that enables natural compression of the resin at least as the resin in the mold solidifies, at least when the resin is injected and filled, a predetermined mold gap is created between the movable mold and the fixed mold. In a method for setting molding conditions for an injection molding machine for setting molding conditions including a molding injection pressure as a force and a limit pressure, a mold opening pattern display unit that graphically displays in advance as a mold opening pattern having a change characteristic of the mold gap with respect to time. , and at least one deformation operation unit for deforming the mold opening pattern, and the operation amount of the deformation operation unit, the deformation amount of the graphically displayed mold opening pattern, and at least one operation. A molding condition conversion processing function unit that associates physical quantities is provided, and when molding conditions are set, the mold opening pattern is displayed graphically on the mold opening pattern display unit, and the deformation amount corresponding to the operation amount of the deformation operation unit While deforming the mold opening pattern, at least one motion physical quantity corresponding to the deformation amount of the mold opening pattern is obtained by the molding condition conversion processing function unit, and based on the motion physical quantity, the mold opening pattern is based. A molding condition setting method for an injection molding machine, comprising correcting a physical quantity of motion and setting a molding condition based on the corrected physical quantity of motion. The deformation operation unit includes a mold opening amount of the mold gap of the mold opening pattern, a mold opening period of the mold gap of the mold opening pattern, a mold opening timing of the mold gap of the mold opening pattern, and a mold opening of the mold opening pattern. 2. The molding condition setting method for an injection molding machine according to claim 1, further comprising a function of changing one or more of mold closing timings of said mold gap. 3. The molding condition of the injection molding machine according to claim 2, wherein the mold opening amount is linked to at least one or more of mold clamping force, injection pressure, injection speed, and injection time as the movement physical quantity. Setting method. 3. The molding condition of the injection molding machine according to claim 2, wherein the mold opening period is linked to at least one or more of injection pressure, mold clamping force, injection speed, and resin temperature as the operating physical quantity. Setting method. 3. The molding of the injection molding machine according to claim 2, wherein the mold opening timing is linked to at least one or more of injection speed, injection pressure, mold clamping force, and number of stages of filling pressure as the operating physical quantity. Condition setting method. 3. The molding of the injection molding machine according to claim 2, wherein the mold closing timing is linked to at least one or more of injection speed, injection pressure, mold clamping force, and number of stages of filling pressure as the operating physical quantity. Condition setting method. 2. The molding of the injection molding machine according to claim 1, wherein the mold opening pattern displayed in the mold opening pattern display section when setting the molding conditions is a mold opening pattern provisionally set after trial molding. Condition setting method. The mold opening pattern displayed on the mold opening pattern display unit when the molding conditions are set is a mold opening pattern provisionally set based on past molding history data or simulated data. The molding condition setting method for an injection molding machine according to claim 1. A mold clamping device that enables natural compression of the resin at least as the resin in the mold solidifies, and at least a mold clamping force that creates a predetermined mold gap between the movable mold and the fixed mold when the resin is injected and filled, and an injection molding machine controller for setting molding conditions including a molding injection pressure as a limit pressure, a mold opening pattern display unit for graphically displaying a mold opening pattern having a change characteristic of the mold gap with respect to time; and a pattern operation function unit for displaying on a display at least one deformation operation unit for deforming the mold opening pattern, the operation amount of the deformation operation unit, the deformation amount of the mold opening pattern displayed graphically, and at least one A molding condition conversion processing function unit is provided in which two motion physical quantities are linked, and when molding conditions are set, the mold opening pattern is graphically displayed on the mold opening pattern display unit, and deformation corresponding to the operation amount of the deformation operation unit is provided. The mold opening pattern is deformed by an amount, and at least one motion physical quantity corresponding to the deformation amount of the mold opening pattern is obtained by the molding condition conversion processing function unit, and the base of the mold opening pattern is determined based on the motion physical quantity. An injection molding machine, comprising: a molding machine controller that corrects a physical quantity of motion that is equal to , and sets molding conditions based on the corrected physical quantity of motion. 10. The injection molding machine according to claim 9, wherein the pattern operation function section includes a deformation operation section using a touch panel for deforming the mold opening pattern by sliding an operation key displayed on the display. . The pattern operation function unit includes a first transformation operation unit that transforms the mold opening amount of the mold gap of the mold opening pattern using an operation key, and a second transformation operation unit that transforms a mold opening period of the mold gap of the mold opening pattern using an operation key. a second deformation operating section, a third deformation operating section for changing the mold opening timing of the mold gap of the mold opening pattern by operating keys, and a fourth deformation operating section to change the mold closing timing of the mold gap of the mold opening pattern by operating keys. 11. An injection molding machine according to claim 9 or 10, comprising one or more operating parts.

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