JP6823621B2 - Molding support device for injection molding machine - Google Patents

Description

The present invention relates to a molding support device for an injection molding machine, which is suitable for use in performing molding support for an injection molding machine that injects and fills a mold with a plasticized molten resin with a screw to mold.

In general, an injection molding machine injects and fills a mold with a plasticized molten resin by a screw to perform molding. Therefore, whether or not the molten resin can be maintained in an appropriate state ensures desirable molding quality. It is an important factor above. In particular, if the plasticization progresses excessively, the resin decomposition rate becomes high, which causes problems such as deterioration of the molten resin (carbonization, etc.) and generation of unnecessary gas. Such defects are closely related to the molding conditions and residence time related to the molten resin, and when the molding conditions are incompatible or the residence time is prolonged, the plasticization progresses excessively and the resin is decomposed. There is a risk that the rate will increase. Therefore, the technique for grasping the state of the molten resin in the heating cylinder and performing the necessary countermeasure processing is also performed by, for example, the injection molding machine disclosed in Patent Document 1 and the plasticization simulation apparatus disclosed in Patent Document 2. Proposed.

On the other hand, the state of the molten resin in the heating cylinder is also affected by the temperature (resin material temperature) of the resin material (pellet material) itself sent into the heating cylinder, so the material supply unit in front of the heating cylinder (scru). A technique has also been proposed that makes it possible to stabilize or adjust the temperature of the temperature control part that controls the temperature of the resin material.

Conventionally, as this kind of technology, a hopper flange of an injection molding machine disclosed in Patent Document 3 and a temperature adjusting device for a temperature control portion under the hopper of an injection molding machine disclosed in Patent Document 4 are known. The hopper flange disclosed in Patent Document 3 aims to rapidly raise and stabilize the temperature of the hopper flange and raise the temperature of the lower part of the hopper to improve the plasticizing ability and realize stable plasticization of the resin. Specifically, a rod-shaped heater is installed in the front stage of the hopper flange, a cooling water pipe is installed in the rear stage of the hopper flange, and a thermocouple is installed at the center position of the hopper flange so that the temperature of the hopper flange can be controlled. The temperature is controlled in the range of 70 ° C. to 130 ° C. Further, the temperature control device disclosed in Patent Document 4 has a temperature control device main body connected to a cooling hole provided in the lower temperature control portion of the hopper by a pipe, and the temperature control device main body is a cooling medium. It has a tank, a pump, a radiator, and a fan driven by a motor that sends cold air toward the radiator. By driving the pump, the cooling medium circulates between the temperature control section under the hopper and the temperature control device main body, and the hopper A temperature sensor is provided in the lower temperature control section, and when the temperature detected by the temperature sensor is higher than the set temperature, the cooling medium circulated by the fan is cooled by the control device that controls the injection molding machine to cool the hopper lower temperature. The temperature of the tuning part is feedback-controlled.

Japanese Unexamined Patent Publication No. 2005-022260 Japanese Unexamined Patent Publication No. 2015-123668 Japanese Unexamined Patent Publication No. 2006-272600 Japanese Unexamined Patent Publication No. 2005-288868

However, the above-mentioned technique for stabilizing or adjusting the temperature of the temperature control section in the conventional material supply section has the following problems.

First, the temperature control of the material supply unit (material drop port, hopper) is the temperature control from the viewpoint of preheating in the previous stage when the resin material is supplied to the inside of the heating cylinder, and is in the heating cylinder treatment in the latter stage. It considers efficiency or stabilization. Therefore, basically, the temperature control is independent for the material supply unit, that is, the temperature control is performed from the viewpoint of maintaining the set target temperature (temperature control temperature) stably and accurately, so that the temperature control is not necessarily accurate. It cannot be said that the temperature is set, and there is room for further improvement from the viewpoint of improving the efficiency and stabilization of the heating cylinder treatment.

Secondly, the heating temperature in the heating cylinder is usually set for each heating part (band heater) attached to the nozzle part, the head part, the front part, the middle part, and the rear part, and is set in the axial direction of the heating cylinder. The predetermined temperature distribution is obtained. Therefore, the temperature of the resin material itself supplied from the material supply unit that affects the heating cylinder side, that is, the temperature control temperature by the temperature control unit attached to the material supply unit, is controlled by the overall molding conditions and the temperature control of the heating cylinder side. Furthermore, if it is further optimized by linking with the type of resin and the like, the molten state of the resin in the heating cylinder can also be further optimized. However, in the conventional temperature control part, since such a cooperation idea does not exist, it is difficult to widen the adjustment range of the entire molding conditions and to make the adjustment precise, and in the end, high plasticization quality and further There was a limit to improving molding quality.

An object of the present invention is to provide a molding support device for an injection molding machine that solves the problems existing in such a background technique.

In order to solve the above-mentioned problems, the present invention constitutes a molding support device 1 of an injection molding machine that provides molding support to an injection molding machine M that injects and fills a mold 2 with a plasticized molten resin by a screw 3 to mold. The temperature control unit 6 that controls the temperature of the material supply unit 5 that supplies the resin material R to the inside of the heating cylinder 4, the molding condition data Dm related to the molding conditions, and the data related to the material type of the screw surface 3f are collected. It has a function of inputting basic data Do including at least screw data Ds related to the form of screw 3 including, and is capable of inputting the type of resin material R. Optimal temperature control temperature Tr by basic data input section Fi and temperature control section 6. If the resin type is input from the temperature control temperature data table DT set for each resin type and at least the basic data input unit Fi when setting the molding conditions, the type of resin material R input from the temperature control temperature data table DT Data processing unit F having a temperature setting processing unit Fcs that is set as the temperature control temperature Tr of the temperature control unit 6 by reading out the temperature control temperature Tr corresponding to the above, and an output for displaying the temperature control temperature Tr on at least the display 7. It is characterized by including a molding machine controller 10 having a processing function unit Fd.

In this case, according to a preferred embodiment of the invention, the material supply unit 5 may include at least one or both of the hopper 5h attached to the heating cylinder 4, the material supply device Prm, and the material drop port 5d of the heating cylinder 4. At the same time, the pellet material Rp can be applied to the resin material R. Further, the upper limit value Tru of the temperature control temperature Tr can be set in the temperature control temperature data table DT, and at least the lower limit value Trm of the temperature control temperature Tr can be manually input to the basic data input unit Fi. Temperature control Temperature manual input function can be provided. On the other hand, in the data processing unit F, based on the basic data Do, the solid phase ratio calculation formula data Dc for calculating the solid phase ratio Xc of the molten resin in the heating cylinder 4 can be set, and the basic data Do and the solid phase ratio can be set. It is possible to provide a solid phase ratio calculation processing unit Fcp for obtaining an estimated solid phase ratio Xcs of the molten resin at the end of measurement by arithmetic processing based on the arithmetic data Dc. Further, the data processing unit F can be set with the decomposition rate calculation formula data Dr for obtaining the resin decomposition ratio Xr of the screw surface 3f at the time of molding based on the basic data Do, and the basic data Do and the decomposition rate calculation formula data Dr can be set. A decomposition rate calculation processing unit Fcr for obtaining an estimated resin decomposition rate Xrs by calculation processing based on the calculation can be provided. Further, the data processing unit F can be provided with a determination processing unit Fcj that determines the degree of the estimated solid phase ratio Xcs and / or the estimated resin decomposition rate Xrs and outputs the result of this determination processing, and also outputs the output processing. The functional unit Fd may be provided with a data display unit 8 including a determination result display unit 8j for displaying the result of the determination process output from the determination processing unit Fcj. Further, the data processing unit F can be set with the rise temperature calculation formula data Dw for obtaining the estimated rise temperature ΔTus based on the data related to the shear calorific value E used for the calculation processing by the decomposition rate calculation formula data Dr, and the rise temperature calculation. An increase temperature calculation processing unit Fct for obtaining an estimated increase temperature ΔTus by arithmetic processing based on the formula data Dw can be provided. Therefore, the output processing function unit Fd can be provided with a temperature rise display unit 8fu that displays the estimated temperature rise ΔTus obtained by the temperature rise calculation processing unit Fct on the display 7. On the other hand, the data processing unit F has a resin temperature conversion formula that converts the temperature control temperature Tr into the resin material temperature Tro based on at least a part of the shape data of the resin material R in the molding condition data and the molding cycle time data. The data can be set, and a resin temperature conversion processing function for obtaining the resin material temperature Tro can be provided by the conversion processing based on the resin temperature conversion formula data. Therefore, the output processing function unit Fd can be provided with the resin material temperature display unit 8to that displays the resin material temperature Tro obtained by this resin temperature conversion processing function on the display 7.

According to the molding support device 1 of the injection molding machine according to the present invention, the following remarkable effects are obtained.

(1) The temperature control temperature data table DT and the temperature control temperature data table DT in which the optimum temperature control temperature Tr set by the temperature control section 6 that controls the temperature of the material supply section 5 that supplies the resin material R to the inside of the heating cylinder 4 is set for each type of resin. If the resin type is input from the basic data input unit Fi at least when the molding conditions are set, the temperature of the temperature control unit 6 is read by reading the temperature control temperature Tr corresponding to the resin type input from the temperature control temperature data table DT. Since the temperature setting processing unit Fcs that is set as the temperature control Tr is provided, it is possible to set the optimum (accurate) temperature control temperature Tr that matches the type of resin, and the efficiency and stabilization of the entire processing in the heating cylinder 4 can be improved. Can be enhanced.

(2) Since the temperature control temperature Tr in the temperature control unit 6 is at least displayed on the display 7, the operator confirms the temperature control temperature Tr, and from the viewpoint of further improving the plasticization quality, the molding conditions in the molding support device 1 It is possible to change (adjust) the temperature control temperature Tr arbitrarily by using the support function such as changing the temperature. That is, since the temperature control temperature Tr can be changed in addition to the change in the molding conditions, the adjustment range of the entire molding conditions can be widened, and thus high molding quality can be ensured by further improving the plasticization quality.

(3) Since the basic data input unit Fi has a function of inputting basic data Do including at least molding condition data Dm related to molding conditions and screw data Ds related to the form of screw 3, melting in the heating cylinder 4 Sufficient data can be collected to understand the molten state of the resin. As a result, it is possible to reliably obtain an accurate estimated solid phase ratio Xcs, an estimated resin decomposition rate Xrs, etc., which indicate the molten state of the required resin (molten resin).

(4) Since the screw data Ds includes data related to the type of material of the screw surface 3f, the catalytic effect of the metal material of the screw surface 3f on the molten resin and the deterioration factor due to the ease of adhesion are reflected in the calculation process. it can. This makes it possible to make a more accurate (accurate) estimation of the molten state.

(5) According to a preferred embodiment, if the material supply unit 5 includes at least one or both of the hopper 5h attached to the heating cylinder 4, the material supply device Prm, and the material drop port 5d of the heating cylinder 4, these three materials Since the supply means can be selected as the temperature control target by the temperature control unit 6, the flexibility and ease of implementation can be enhanced without being limited by the structure of the injection molding machine M or the like. In particular, it is a useful adjusting means (setting changing means) when it is difficult to change the heating temperature of the heating cylinder 4, the molding cycle time, or the like.

(6) According to a preferred embodiment, if the pellet material Rp is applied to the resin material R, the pellet material Rp that is widely used and has a fixed shape such as a columnar shape can be targeted. It is possible to easily and accurately estimate its own temperature, and it is possible to accurately set the temperature control temperature Tr.

(7) When the upper limit value Tru of the temperature control temperature Tr is set in the temperature control temperature data table DT according to a preferred embodiment, the control of the temperature control temperature Tr is controlled by setting the upper limit value Tru and the lower limit value Trm. Since the temperature control temperature of one of the most important (upper limit value Tru) can be set automatically, accurate control of the temperature control temperature (target temperature) should be performed even when various control methods are adopted. Can be done.

(8) In a preferred embodiment, if the basic data input unit Fi is provided with a temperature control temperature manual input function capable of manually inputting at least the lower limit value Trm of the temperature control temperature Tr, the upper limit value Tru is automatically set. The lower limit value Trm in the above can be arbitrarily set by manual input, and if necessary, the entire temperature control temperature Tr (upper limit value Tru and lower limit value Trm) can be easily set manually.

(9) According to a preferred embodiment, the data processing unit F is set with the solid phase ratio calculation formula data Dc for calculating the solid phase ratio Xc of the molten resin in the heating cylinder 4 based on the basic data Do, and the basic data. If the solid phase ratio calculation processing unit Fcp for obtaining the estimated solid phase ratio Xcs of the molten resin at the end of measurement by the arithmetic processing based on Do and the solid phase ratio calculation formula data Dc is provided, the estimated solid obtained based on the basic data Do Since the insufficient plasticization of the resin can be accurately (quantitatively) grasped by the phase ratio Xcs, appropriate measures can be taken against the insufficient plasticization. In particular, since human judgment such as experience is not required, even an inexperienced beginner operator can improve the yield rate and molding quality of molded products, and more desirable molding (production) can be performed. .. Moreover, since the physical properties (melting characteristics, etc.) of each type of the resin material R can be reflected in the calculation of the estimated solid phase ratio Xcs, a more accurate (accurate) estimated solid phase ratio Xcs can be obtained.

(10) According to a preferred embodiment, the data processing unit F is set with the decomposition rate calculation formula data Dr for obtaining the resin decomposition rate Xr of the screw surface 3f at the time of molding based on the basic data Do, and the basic data Do and the decomposition rate. If the decomposition rate calculation processing unit Fcr for obtaining the estimated resin decomposition rate Xrs by the calculation processing based on the calculation formula data Dr is provided, the basic data Do used for the calculation processing of the solid phase ratio calculation formula data Dc can be used as the decomposition rate calculation formula data. The estimated resin decomposition rate Xrs can be easily obtained, for example, it can be used for the arithmetic processing of Dr. Moreover, the deteriorated state of the molten resin can be accurately grasped by the estimated resin decomposition rate Xrs that can be easily obtained by the arithmetic processing. As a result, in addition to the limit point on one side (insufficient plasticization side) of the molten state according to the estimated solid phase ratio Xcs, the limit point on the other side (excessive plasticization side) of the molten state according to the estimated resin decomposition rate Xrs The appropriate range of the molten state can be set, and the moldability and molding quality can be stabilized and improved.

(11) According to a preferred embodiment, if the data processing unit F is provided with a determination processing unit Fcj that determines the degree of the estimated solid phase ratio Xcs and / or the estimated resin decomposition rate Xrs and outputs the result of this determination processing. Since the operator can easily grasp the molten state of the molten resin, which is difficult to judge, the necessary countermeasure processing can be quickly performed.

(12) According to a preferred embodiment, if the output processing function unit Fd is provided with a data display unit 8 including a determination result display unit 8j for displaying the result of the determination processing output from the determination processing unit Fcj, the operator can visually check. Since the result of the determination process can be confirmed by means, even an inexperienced beginner operator can easily and surely confirm whether or not the molten resin is in an appropriate molten state, and it is necessary to change the setting of molding conditions. Various measures can be taken promptly, and the efficiency and efficiency of molded product production can be improved.

(13) According to a preferred embodiment, the data processing unit F is set with the rising temperature calculation formula data Dw for obtaining the estimated rising temperature ΔTu based on the data related to the shear calorific value E used for the calculation processing by the decomposition rate calculation formula data Dr. At the same time, if the rise temperature calculation processing unit Fct for obtaining the estimated rise temperature ΔTus by the calculation processing based on the rise temperature calculation formula data Dw is provided, the data related to the shear calorific value E used for the calculation processing by the decomposition rate calculation formula data Dr can be obtained. Since it can also be used for the calculation processing of the rise temperature calculation formula data Dw, the estimated rise temperature ΔTus can be easily obtained.

(14) According to a preferred embodiment, if the output processing function unit Fd is provided with the temperature rise temperature display unit 8fu for displaying the estimated temperature rise ΔTus obtained by the temperature rise calculation processing unit Fct on the display 7, the estimated solid phase ratio Xcs and / Or Since the information related to the estimated rising temperature ΔTus can be confirmed in addition to the information related to the estimated resin decomposition rate Xrs, the molten state of the molten resin can be grasped more accurately.

(15) According to a preferred embodiment, the data processing unit F converts the temperature control temperature Tr into the resin material temperature Tro based on at least the shape data of at least a part of the resin material R in the molding condition data and the molding cycle time data. If the resin temperature conversion formula data is set and the resin temperature conversion processing function for obtaining the resin material temperature Tro by the conversion treatment based on the resin temperature conversion formula data is provided, the resin material temperature Tro is provided based on the obtained temperature control temperature Tr. Therefore, the relationship between the temperature state of the resin material temperature Tro itself and the molten state of the resin based on this temperature state, that is, the estimated solid phase ratio Xcs and / or the estimated resin decomposition rate Xrs, the estimated rising temperature ΔTus, etc. It is possible to accurately grasp the information related to.

(16) According to a preferred embodiment, if the output processing function unit Fd is provided with the resin material temperature display unit 8to that displays the resin material temperature Tro obtained by the resin temperature conversion processing function in the data processing unit F on the display 7, the resin is provided. The material temperature Tro can be easily confirmed visually, and other information, that is, information can be easily confirmed by comparing with the estimated solid phase ratio Xcs and / or the estimated resin decomposition rate Xrs, the estimated rising temperature ΔTus, and the like.

Block system diagram of the processing system (control system) in the molding support device of the injection molding machine according to the preferred embodiment of the present invention. A block diagram showing the mechanical structure of an injection molding machine equipped with the molding support device, Schematic perspective view of pellet material, which is a resin material used in the injection molding machine, Principle diagram of screw for explaining the calculation function of the solid phase ratio calculation processing unit provided in the molding support device, Figure of change characteristic of solid phase ratio with respect to screw position for explaining the calculation function of the solid phase ratio calculation processing unit provided in the molding support device, A list showing the ease of adhesion of resin to the metal that is the basis of the resin decomposition rate by type, An explanatory diagram of the deterioration principle of the resin, which is the basis of the resin decomposition rate calculated by the resin decomposition rate calculation processing unit provided in the molding support device. A list showing the ease of resin decomposition with respect to the metal that is the basis of the resin decomposition rate, by type. Correlation characteristic diagram showing the relationship between the estimated temperature rise and the measured temperature rise in the molding support device, Functional explanatory diagram of the judgment processing unit provided in the molding support device, Screen view of the data display unit in the molding support device, Correlation characteristic diagram showing the relationship between the measured resin material temperature and the estimated resin material temperature with the type of resin as a parameter to explain the effectiveness of the molding support device. A characteristic diagram showing the relationship between the resin temperature variation and the resin temperature rise to explain the effectiveness of the molding support device. A characteristic diagram showing the relationship between the resin temperature variation and the resin temperature stability index for explaining the effectiveness of the molding support device, A characteristic diagram showing the relationship between the resin material temperature variation and the temperature control temperature verified for each type of resin, which is the basis of the temperature control temperature data table provided in the molding support device. A flowchart showing a molding support processing procedure using the molding support device, A display screen diagram showing an example of a judgment message displayed by the output processing function unit provided in the molding support device,

Next, preferred embodiments according to the present invention will be given and described in detail with reference to the drawings.

First, in order to facilitate the understanding of the molding support device 1 according to the present embodiment, an outline of the injection molding machine M that can use the molding support device 1 will be described with reference to FIG.

FIG. 2 shows an injection molding machine M, particularly an injection device Mi in which the mold clamping device is omitted. In the injection device Mi, reference numeral 4 denotes a heating cylinder, and a nozzle 4n is attached to the front end portion of the heating cylinder 4 via a head portion 4h. The nozzle 4n has a function of injecting the molten resin inside the heating cylinder 4 into the mold 2 indicated by a virtual line. Further, a hopper 5h is provided in the upper part of the rear end of the heating cylinder 4, and a material drop port 5d penetrating the heating cylinder 4 is formed between the lower end opening of the hopper 5h and the inside of the heating cylinder 4. As a result, the hopper 5h and the inside of the heating cylinder 4 communicate with each other through the material drop port 5d, and the resin material R shown by a virtual line in the hopper 5h is supplied to the inside of the heating cylinder 4 through the material drop port 5d. .. Although the hopper 5h has been illustrated, the material supply device Prm shown in FIG. 2 may be used instead of the hopper 5h. When the material supply device Prm is used, in FIG. 2, the hopper 5h is removed from the hopper attachment portion of the heating cylinder 4, and the material supply device Prm is attached instead. The material supply device Prm has a function of charging the resin material R housed in the separately arranged material tank into the material drop port 5d in a fixed amount by the charging adapter. Therefore, the hopper 5h, the material supply device Prm, and the material drop port 5d constitute the material supply unit 5 of the present embodiment that supplies the resin material R to the inside of the heating cylinder 4.

On the other hand, a heater 6h for heating the resin material R housed inside the hopper 5h is attached to the outer peripheral surface of the hopper 5h, and a water jacket 6j is formed on the heating cylinder 4 around the material drop port 5d. Then, the heater 6h is connected to the power supply circuit 6de of the temperature control driver 6d, and the water jacket 6j is connected to the temperature control water circulation circuit 6dw of the temperature control driver 6d. The temperature-controlled water circulation circuit 6dw can control (heat or cool) the pellet material Rp passing through the material drop port 5d by circulating the temperature-controlled water medium (hot water or cooling water) in the water jacket 6j. it can. Further, the power supply circuit 6de and the temperature control water circulation circuit 6dw are connected to the controller main body 22, respectively. As a result, control commands for the power supply circuit 6de and the temperature control water circulation circuit 6dw are given to the temperature control driver 6d from the controller main body 22. Further, the temperature control temperature Tr is detected by a temperature sensor (not shown), and this detection signal is applied to the temperature control driver 6d. Therefore, the heater 6h, the water jacket 6j, and the temperature control driver 6d constitute the temperature control section 6 for controlling the temperature of the material supply section 5.

Further, since the material temperature control unit 6p using a heater or the like is also attached to the material supply device Prm, this material temperature control unit 6p is connected to the power supply circuit 6de of the temperature control driver 6d. As a result, the temperature control for the material temperature control unit 6p can also be performed by the control main body 22 described later in the injection molding machine M, and in particular, the temperature control control integrated with the temperature control for the heater 6h and the water jacket 6j becomes possible. ..

The cylindrical pellet material Rp shown in FIG. 3 is applied to the resin material R. By applying such a pellet material Rp, it is possible to target the pellet material Rp which is widely used and has a fixed shape such as a cylinder, so that the temperature of the pellet material Rp itself to be temperature-controlled can be easily and accurately estimated. Therefore, the temperature control temperature Tr can be set accurately.

In the present embodiment, the hopper 5h or the material supply device Pr and the material drop port 5d are used as the material supply unit 5, but any one of the hopper 5h, the material drop port 5d and the material supply device Prm is used as the material supply unit. The material supply unit 5 may be the hopper 5h and the material drop port 5d, or both the material supply device Prm and the material drop port 5d. Therefore, the temperature control unit 6 attached to the material supply unit 5 can also target one or both of the hopper 5h, the material supply device Prm, and the material drop port 5d. For example, the heater 6h and the material temperature control section 6p are removed or not used from the illustrated configuration, and only the water jacket 6j is targeted for temperature control by the temperature control section 6, or the water jacket 6j is not used and the material temperature control section 6p is used. Alternatively, only the heater 6h may be the temperature control target by the temperature control unit 6. As a result, each material supply means of the hopper 5h, the material supply device Prm, and the material drop port 5d can be selected as the temperature control target by the temperature control unit 6, so that the process is carried out without being limited by the structure of the injection molding machine M or the like. The flexibility and ease of use can be increased. In particular, it is a useful adjusting means (setting changing means) when it is difficult to change the heating temperature of the heating cylinder 4, the molding cycle time, or the like.

On the other hand, the screw 3 is rotatably and retractably loaded inside the heating cylinder 4. A spiral flight portion 3mp is formed on the outer peripheral surface of the screw 3, and the screw surface 3f is coated with a predetermined surface material (metal) in consideration of durability and the like. The screw 3 has a metering zone Zm, a compression zone Zc, and a feed zone Zf from the front side to the rear side. On the other hand, the rear end portion of the screw 3 is coupled to the screw drive portion 9. The screw drive unit 9 includes a screw rotation mechanism 9r that rotates the screw 3 and a screw advance / retreat mechanism 9m that advances and retracts the screw 3. In the example, the drive system of the screw rotation mechanism 9r and the screw advance / retreat mechanism 9 m indicates an electric system using an electric motor, but a hydraulic system using a hydraulic circuit may be used, and the drive system may be a hydraulic system. It doesn't matter. Then, the screw rotation mechanism 9r and the screw advance / retreat mechanism 9m are connected to the power supply driver 9d, and the power supply driver 9d is connected to the controller main body 22. As a result, the controller main body 22 gives the power supply driver 9d a control command for the screw rotation mechanism 9r and the screw advance / retreat mechanism 9m. Further, physical quantities such as the speed and position of the screw 3 are detected by a speed sensor, a position sensor and the like (not shown), and this detection signal is given to the power feeding driver 9d.

Further, the heating cylinder 4 has a heating cylinder front portion 4f, a heating cylinder middle portion 4m, and a heating cylinder rear portion 4r from the front side to the rear side, and front heating portions 11f, on the outer peripheral surfaces of the respective portions 4f, 4m, 4r. A central heating section 11m and a rear heating section 11r are attached. Similarly, the head heating portion 11h is attached to the outer peripheral surface of the head portion 4h, and the nozzle heating portion 11n is attached to the outer peripheral surface of the nozzle 4n. Each of these heating units 11f, 11m, 11r, 11h, 11n can be configured by a band heater or the like. Therefore, the nozzle heating unit 11n, the head heating unit 11h, the front heating unit 11f, the middle heating unit 11m, and the rear heating unit 11r constitute the heating group portion 11. Then, the heating group portion 11 is connected to the heater driver 11d, and the heater driver 11d is connected to the controller main body 22. As a result, the controller main body 22 gives the heater driver 11d a control command for each heating unit 11f, 11m, 11r, 11h, 11n, and the heating temperature is detected by a temperature sensor (thermoelectric pair, etc.) (not shown). , This detection signal is applied to the heater driver 11d.

On the other hand, FIG. 1 shows a molding machine controller 10 that controls the entire injection molding machine M. The molding machine controller 10 includes a controller main body 22 having a computer function incorporating hardware such as a CPU and an internal memory 10 m, and a display 7 is connected to the controller main body 22. The display 7 can display necessary information and is provided with a touch panel 7t, and various input operations such as input, setting, and selection can be performed using the touch panel 7t. Further, a driver group 24 for driving (operating) various actuators is connected to the controller main body 22. The driver group 24 includes a temperature control driver 6d including the above-mentioned power supply circuit 6de and temperature control water circulation circuit 6dw shown in FIG. 2, a power supply driver 9d, and a heater driver 11d.

Therefore, the molding machine controller 10 includes the HMI control system and the PLC control system, and stores the PLC program and the HMI program in the internal memory 10 m. The PLC program executes sequence operations of various processes in the injection molding machine M, monitors the injection molding machine M, etc., and the HMI program sets and displays the operation parameters of the injection molding machine M, and operates the injection molding machine M. Display of monitoring data, etc. is executed.

Next, the configuration of the molding support device 1 according to the present embodiment that can be used for such an injection molding machine M will be described with reference to FIGS. 1 to 16.

The molding support device 1 according to the present embodiment is composed of the molding machine controller 10 and peripheral actuators shown in FIG. Therefore, in the internal memory 10 m of the molding machine controller 10, the support program Ps by the application program for operating the molding support device 1 is stored.

The molding support device 1 basically has a basic function of maintaining the molten state of the resin in the heating cylinder 4 in an optimum state. In addition, in the present embodiment, molding that further optimizes the basic function by optimizing the temperature control temperature Tr of the temperature control unit 6 that controls the temperature of the pellet material Rp supplied to the heating cylinder 4. This is an attempt to construct the support device 1.

Therefore, in order to facilitate the understanding of the molding support device 1 according to the present embodiment, first, the basic functions of the molding support device 1 will be described.

As shown in FIG. 1, the molding support device 1 having a basic function inputs basic data Do for inputting at least molding condition data Dm related to molding conditions and basic data Do including screw data Ds related to the form of screw 3. The unit Fi is provided. As the basic data input unit Fi, a touch panel 7t attached to the display 7 can be used. That is, since an input screen (not shown) is displayed on the display 7, necessary numerical values can be input or selected via the touch panel 7t.

In this case, the molding condition data Dm includes various data related to molding conditions for molding by the injection molding machine M, specifically, melt flow rate, screw rotation speed, measuring time, back pressure, measuring position, front part. Basic data related to various physical quantities such as temperature, middle temperature, rear 1 temperature, rear 2 temperature, molding cycle time, and various resin materials R ..., that is, data related to various pellet materials Rp ..., etc. Contains multiple types of data related to the condition. The data related to each pellet material Rp ... Includes various physical properties for each pellet material Rp ... such as melting characteristics. In this way, if the molding condition data Dm includes the data related to the pellet material Rp ... (Resin material R ...) to be used, the physical properties (melting) of each pellet material Rp ... Are included in the calculation of the estimated solid phase ratio Xcs described later. Since (characteristics, etc.) can be reflected, a more accurate (accurate) estimated solid phase ratio Xcs can be obtained.

Further, the screw data Ds includes various data related to the form of the screw 3, specifically, the screw outer diameter, the screw flight width, the friction coefficient between the solid and the screw, the screw groove depth, the length in the screw width direction, and the screw lead. , Data related to various dimensions such as flight coefficient, screw angle of screw flight, number of pitches, and data related to the type of material of the screw surface 3f, and a plurality of various data related to the screw are included. In particular, if data relating to the type of material of the screw surface 3f is included, the catalytic effect of the metal material of the screw surface 3f on the molten resin and the deterioration factor due to the ease of adhesion can be reflected in the arithmetic processing. More accurate (accurate) estimation can be performed.

In this way, if the basic data input unit Fi has a function of inputting basic data Do including at least molding condition data Dm related to molding conditions and screw data Ds related to the form of the screw 3, melting in the heating cylinder 4 Since sufficient data for grasping the molten state of the resin can be collected, it is possible to surely obtain an accurate estimated solid phase ratio Xcs, an estimated resin decomposition rate Xrs, etc. indicating the required molten state of the resin (molten resin).

On the other hand, the molding support device 1 includes a data processing unit F. The data processing unit F includes an arithmetic data setting unit Fs using an internal memory of 10 m, and the arithmetic data setting unit Fs includes a solid phase ratio arithmetic data Dc, a decomposition rate arithmetic data Dr, and a rise temperature calculation. The expression data Dw is set. The solid phase ratio calculation formula data Dc is data related to the calculation formula for calculating the solid phase ratio Xc of the molten resin in the heating cylinder 4 based on the above-mentioned basic data Do, and the decomposition rate calculation formula data Dr is It is the data related to the calculation formula for calculating the resin decomposition rate Xr of the screw surface 3f at the time of molding based on the above-mentioned basic data Do, and the rising temperature calculation formula data Dw is used for the calculation processing by the decomposition rate calculation formula data Dr. It is the data related to the calculation formula for obtaining the rising temperature ΔTu based on the data related to the shear calorific value E used.

Next, the solid phase ratio calculation formula for obtaining the solid phase ratio Xc which is the basis of the solid phase ratio calculation formula data Dc, and the decomposition rate calculation formula for obtaining the resin decomposition rate Xr which is the basis of the decomposition rate calculation formula data Dr. , And the rise temperature calculation formula for obtaining the rise temperature ΔTu, which is the basis of the rise temperature calculation formula data Dw, will be specifically described.

First, the solid phase ratio calculation formula will be described. FIG. 4 shows a principle diagram of the screw 3 for explaining the calculation function of the solid phase ratio Xc. In FIG. 4, 3 indicates a screw, 4 indicates a heating cylinder, 31 indicates a screw groove bottom, 32 indicates a screw flight, 33 indicates a melt film, 34 indicates a solid bed, and 35 indicates a melt pool. Further, Cx indicates the width of the solid at the current position, and Cw indicates the length obtained by subtracting the flight width from the pitch width.

An example of the solid phase ratio calculation formula used in this embodiment is shown in [Equation 101].
Solid phase ratio Xc = Cx / Cw
= (Cx'/ Cw) · (1-ka · Φi) ... [Equation 101]
However, Φi = f (Tq, Tc) · Φe

As shown in [Equation 101], the solid phase ratio Xc can be basically obtained by Cx / Cw. In [Equation 101], Cx'is the width of the solid one pitch before, ka is the adjustment coefficient, Φi is the melting rate in injection, Φe is the melting rate in extrusion, Tq is the weighing time, and Tc is the molding cycle time. Shown.

In general, in a melting mechanism including a heating cylinder that operates continuously like an extrusion molding machine, a known model formula proposed by Tadmor in 1978 is widely used as a theoretical formula for predicting a plasticized state.

On the other hand, since the injection molding machine M performs intermittent operation (injection → weighing → standby), injection conditions such as an injection position and a screw stop time, which are different from those of the extrusion molding machine, are included. Therefore, the known model formula cannot be applied to the injection molding machine M as it is. Therefore, the solid phase ratio calculation formula used in the present embodiment converts the model formula applicable to the extrusion molding machine into the model formula applicable to the injection molding machine M, that is, the model formula applicable to the extrusion molding machine. , F (Tq, Tc) · Φe shown in [Equation 101], the rate at which the resin material melts in a functional expression including the weighing time Tq and the cycle time Tc Φe (a quantity suggesting the melting rate and a unit) Is non-dimensional), and Φi obtained by multiplying it is used in the solid phase ratio calculation formula.

As a result, if the calculation formula shown in [Equation 101] is used, the model formula applicable to the extrusion molding machine is converted into the model formula applicable to the injection molding machine M. Therefore, the heating cylinder 4 containing the screw 3 is accommodated. It can be obtained as a solid phase ratio Xc indicating the melting ratio (degree of melting) of the molten resin inside. Therefore, the solid phase ratio Xc obtained by this solid phase ratio calculation formula can be used as the estimated solid phase ratio Xc obtained based on the input basic data Do, that is, the estimated solid phase ratio Xcs.

Further, the estimated solid phase ratio Xcs is verified to see if it matches the solid phase ratio of the actually obtained molten resin, that is, the measured solid phase ratio, and after adjustment, it is almost the same. It is desirable to set a matching solid phase rate calculation formula as the solid phase rate calculation formula data Dc in the present embodiment.

Regarding the term (1-ka · Φi) in [Equation 101], the closer to 0, that is, the faster the velocity Φi, the closer the solid phase ratio Xc approaches 0, and the molten resin in the heating cylinder 4 is completely removed. It suggests that it has been melted. In the embodiment, further, the amount of unmelted solid remaining was calculated from the solid phase ratio Xc, and the correlation with the fluctuation of the resin temperature during molding was considered. The thickness of the melt film 33 is generally used for calculating the shear heat generation, but since there is a large difference between the measured value and the calculated value, in this embodiment, the solid phase ratio (adjusted value) at the time of complete melting is specified. It was calculated that only the liquid phase generated shear heat generation due to the separation into the solid phase and the liquid phase. As a result, it was confirmed that the values were almost the same as the measured values.

FIG. 5 shows the change in the solid phase ratio Xc with respect to the position of the screw 3 obtained from the solid phase ratio calculation formula. The horizontal axis of FIG. 5 indicates a screw pitch number, and the larger the number, the closer to the nozzle side. The vertical axis indicates the solid phase ratio Xc, and the closer the solid phase ratio Xc is to 0, the closer to the completely melted state, and when the solid phase ratio Xc is 0, the completely melted state is reached. In FIG. 5, the solid phase ratio Xc at the position indicated by Xcs is regarded as the estimated solid phase ratio Xcs of the molten resin at the end of measurement.

The estimated solid phase ratio Xcs does not necessarily have to be 0 in practice. It is desirable to select this criterion as "0.06", and it was confirmed from the results of the experiment that this value is an appropriate value. As a result, when the estimated solid phase ratio Xcs is "Xcs ≤ 0.06", it can be determined that the melted state is good, and when "Xcs> 0.06", the melting is insufficient ( It can be judged that the plasticization is insufficient). As described above, the magnitude of the estimated solid phase ratio Xcs is an index indicating a molten state such as insufficient plasticization of the molten resin. Since the estimated solid phase ratio Xcs indicates the melting level of the molten resin, the unmelted polymer fraction may be used.

In this way, if the solid phase ratio calculation formula data Dc for calculating the solid phase ratio Xc of the molten resin in the heating cylinder 4 is set in the calculation formula data setting unit Fs based on the basic data Do, the solid phase described later will be described. Since the estimated solid phase ratio Xcs of the molten resin at the end of measurement can be obtained by the arithmetic processing based on the basic data Do and the solid phase ratio calculation formula data Dc by the rate calculation processing unit Fcp, the estimated solid phase ratio Xcs obtained can be used. , The insufficient plasticization of the resin can be accurately (quantitatively) grasped, and appropriate measures can be taken against the insufficient plasticization. In particular, since human judgment such as experience is not required, even an inexperienced beginner operator can improve the yield rate and molding quality of molded products, and more desirable molding (production) can be performed. .. Moreover, since the physical properties (melting characteristics, etc.) of each type of pellet material Rp ... Can be reflected in the calculation of the estimated solid phase ratio Xcs, a more accurate (accurate) estimated solid phase ratio Xcs can be obtained.

Next, the decomposition rate calculation formula will be described. An example of the decomposition rate calculation formula used in this embodiment is shown in [Equation 102].
Resin decomposition rate Xr = E ・ Wa ・ kb… [Equation 102]
However, E = f (W, L, σ, γ, ζ)
Wa∝f (Φm, Φc, Qs)

[Equation 102] is basically based on the model formula of Tadomor, and is an arithmetic formula for obtaining the resin decomposition rate Xr in the injection molding machine M. In [Equation 102], E is the shear calorific value [MJ] calculated from the Tadmor model equation, and is the total shear calorific value obtained by integrating the shear calorific value from the completely melted position to the tip of the screw 3. Wa indicates the bonding work between the molten resin and the metal [MJ / square meter], and kb indicates the adjustment coefficient considering the catalytic effect of the metal.

Further, in the calculation of the shear calorific value E, W is the length obtained by subtracting the flight width from the pitch width, L is the screw spiral length, σ is the shear stress, γ is the shear rate, and ζ is the dimensionless depth. In addition, in the calculation of the bonding work Wa, Φm is the working function of the base metal, Φc is the working function of the metal coated on the base metal, and Qs is the amount of oxygen adhering to the outermost metal. The oxygen amount Qs can be measured by an X-ray analyzer (EDX device). This adhesive work Wa shows the ease of adhesion between the molten resin and the metal, and FIG. 6 shows the ease of adhesion of the molten resin to the metal on the screw surface 3f by type.

In addition, since the catalytic effect of the metal (oxidation induction time) becomes a deterioration factor for the molten resin, this catalytic effect is reflected in the coefficient kb. Generally, it is known that when a polymer (resin) is heated, hydrogen is extracted to become a polymer radical active species. In the case of polymer radical active species, the molecular weight of the polymer does not decrease in this state, but when it comes into contact with a metal, it acts as a catalyst to bind to oxygen and radicals in the air, and the decomposition of the molten resin is promoted. Phenomenon occurs. FIGS. 7 (a) to 7 (c) schematically show this phenomenon. FIG. 7A shows a state in which the polymer 45 is activated (thermally decomposed) by heat. When catalytic activity is carried out by the metal species in this state, as shown in FIG. 7 (b), an oxidation phenomenon occurs in which oxygen 46 is bound to the activated polymer 45. Then, when the process further progresses, as shown in FIG. 7C, a phenomenon of lowering the molecular weight due to oxidative decomposition of the polymer 45 occurs. FIG. 8 shows the ease of decomposition of the molten resin with respect to the metal on the screw surface 3f by type.

Since the calculation result of the resin decomposition rate Xr based on the decomposition rate calculation formula of [Equation 102] considers the residence time of the molten resin, the bonding work, the oxidation induction time, the screw shape, etc., it is obtained by this decomposition rate calculation formula. The resin decomposition rate Xr to be obtained can be used as an estimated resin decomposition rate Xr obtained based on the input basic data Do, that is, an estimated resin decomposition rate Xrs. If such decomposition rate calculation formula data Dr is set, it is estimated that the basic data Do used for the calculation processing of the solid phase ratio calculation formula data Dc described above can also be used for the calculation processing of the decomposition rate calculation formula data Dr. The resin decomposition rate Xrs can be easily obtained.

In addition, as a result of the experiment (demonstration), it was confirmed that the estimated resin decomposition rate Xrs did not deteriorate as long as 0.00 could be maintained. Therefore, when the value is larger than 0.00, it can be understood that the molten resin is in a deteriorated state (including a case where the risk of shifting to the deteriorated state is high). That is, when the estimated resin decomposition rate Xrs is "Xrs = 0.00", it can be determined that the resin is in a good molten state without deterioration, and when "Xrs> 0.00", it is in a deteriorated state or. It can be judged that there is a high risk of shifting to a deteriorated state. As described above, the magnitude of the estimated resin decomposition rate Xrs can be used as an index showing the deterioration state of the molten resin caused by the excessive progress of plasticization.

In this way, if the decomposition rate calculation type data Dr for obtaining the resin decomposition rate Xr of the screw surface 3f at the time of molding is set in the calculation type data setting unit Fs based on the basic data Do, the decomposition rate calculation processing unit Fcr, which will be described later, is set. Therefore, the estimated resin decomposition rate Xrs can be obtained by performing arithmetic processing based on the basic data Do and the decomposition rate arithmetic expression data Dr. Therefore, the basic data Do used for the arithmetic processing of the solid phase ratio arithmetic expression data Dc can be obtained. The estimated resin decomposition rate Xrs can be easily obtained, for example, it can be used for the calculation processing of the decomposition rate calculation formula data Dr.

Moreover, since the deteriorated state of the molten resin can be accurately grasped by the estimated resin decomposition rate Xrs that can be easily obtained by arithmetic processing, in addition to the limit point on one side (insufficient plasticization side) of the molten state by the estimated solid phase ratio Xcs. , The appropriate range of the molten state can be set by both the limit points on the other side (excessive plasticization side) of the molten state according to the estimated resin decomposition rate Xrs, and the moldability and the molding quality can be stabilized and improved. it can.

Next, the rise temperature calculation formula will be described. An example of the rising temperature calculation formula that is the basis of the rising temperature calculation formula data Dw is shown in [Equation 103].
Rising temperature ΔTu = E / (Q · Cm)… [Equation 103]

In [Equation 103], the shear calorific value E in [Equation 102] for obtaining the resin decomposition rate Xr described above can be used for E [MJ]. In addition, Q shows plasticizing capacity, and Cm shows melt specific heat (resin specific heat).

As described above, in order to obtain the rising temperature ΔTu, the data related to the shear calorific value E described above can be used, so that the estimated rising temperature ΔTus can be easily obtained. That is, in order to obtain the estimated rising temperature ΔTus, the shear calorific value E from the completely melted position to the tip of the screw can be obtained by dividing the plasticizing capacity Q and the resin specific heat Cm. The molten resin was treated as an exponential fluid such as starch syrup, not as a Newtonian fluid such as water.

The solid phase ratio Xc and the resin decomposition rate Xr described above are closely related to the rising temperature ΔTu of the resin. Therefore, in addition to the information related to the estimated solid phase ratio Xcs and / or the estimated resin decomposition rate Xrs, the estimated rising temperature ΔTus is related to the molten state of the molten resin as information related to the estimated solid phase ratio Xcs and the estimated resin decomposition rate Xrs. If it is displayed as information, the information related to the estimated rising temperature ΔTus can also be confirmed, so that the operator (user) can more accurately grasp the molten state.

FIG. 9 shows the correlation characteristics between the estimated rising temperature ΔTus and the measured rising temperature. This characteristic uses ABS resin as the resin, and the estimated rise temperature ΔTus is below the danger value p = 0.01 in all cases, and a sufficient correlation can be confirmed.

On the other hand, the data processing unit F includes a calculation processing function unit Fc using the molding machine controller 10 (control body 22 and internal memory 10 m). The arithmetic processing function unit Fc can perform arithmetic processing using the solid phase ratio arithmetic expression data Dc, the decomposition rate arithmetic expression data Dr, and the rising temperature arithmetic expression data Dw described above.

Therefore, at least the solid phase ratio Xc of the molten resin at the end of the measurement, that is, the estimated solid phase ratio Xcs is obtained from the arithmetic processing function unit Fc by arithmetic processing based on the basic data Do and the solid phase ratio calculation formula data Dc. Decomposition rate calculation processing unit Fcd for obtaining the resin decomposition rate Xr of the molten resin, that is, the estimated resin decomposition rate Xrs by arithmetic processing based on the solid phase ratio calculation processing unit Fcp, the basic data Do, and the decomposition rate calculation formula data Dr. The rise temperature calculation processing unit Fct for obtaining the estimated rise temperature ΔTus by the calculation process based on the rise temperature calculation formula data Dw is included.

Further, the arithmetic processing function unit Fc includes a determination processing unit Fcj that determines the degree of the estimated solid phase ratio Xcs and / or the estimated resin decomposition rate Xrs and outputs the support message data Dh corresponding to the result of this determination processing. Be prepared.

FIG. 10 shows a determination criterion for the determination process. In FIG. 10, the determination result “01” is the case of “Xcs ≦ 0.06” and “Xrs = 0.00”. In this case, since the molten state is in a sufficient state and is not in a deteriorated state, it can be judged that the molding environment is good. The determination result “02” is the case of “Xcs ≦ 0.06” and “Xrs> 0.00”. In this case, although the molten state is in a sufficient state, it can be determined that there is a possibility of a deteriorated state. The determination result "03" is the case of "Xcs> 0.06" and "Xrs = 0.00". In this case, there is a possibility of insufficient plasticization, but it can be judged that the deterioration state does not occur. The determination result "04" is the case of "Xcs> 0.06" and "Xrs> 0.00". In this case, it can be determined that insufficient plasticization may occur and at the same time, a deteriorated state may occur.

In addition, the determination processing unit Fcj has a function of outputting support message data Dh corresponding to the determination results “01” to “04”. Specifically, in the case of the judgment result "01", the support message mr is output, in the case of the judgment result "02", the support message m1 is output, and in the case of the judgment result "03", the support message m2 is output. Output, and if the determination result is "04", the support message m3 is output. The specific content of the support message will be described in the molding support method using the molding support device 1 described later.

Further, the molding support device 1 is provided with the output processing function unit Fd shown in FIG. The output processing function unit Fd is, so to speak, a processing function for using the output of the determination result, and has a display function for displaying the above-mentioned support messages mr, m1, m2 ... On the display 7. In the support messages mr, m1, m2, m3, the judgment messages mrj, m1j, m2j, m3j indicating the result of the judgment processing and the countermeasure message m1p for taking countermeasures corresponding to the judgment messages m1j, m2j, m3j , M2p, m3p are included (see FIG. 17). Therefore, the support message data Dh corresponding to the support messages mr, m1, m2, and m3 is stored in the internal memory 10m.

As other processing functions that utilize the determination result, although not shown, the data related to the estimated solid phase ratio Xcs and the data related to the estimated resin decomposition rate Xrs are the correction data corresponding to the countermeasure messages m1p, m2p ... It can also be used for automatic correction processing that automatically corrects the corresponding molding conditions.

Further, the output processing function unit Fd is provided with the data display unit 8 shown in FIG. 11, and the data display unit 8 is provided with a temperature control temperature display unit 8t, a resin state display unit 8f, and a determination result display unit 8j. In this case, the temperature control temperature display unit 8t is further provided with a hopper temperature display unit (or material temperature control unit temperature display unit) 8th, a material drop port temperature display unit 8tr, and a resin material temperature display unit 8to, and is in a resin state. The display unit 8f is provided with an estimated resin decomposition rate display unit 8fp, an estimated solid phase ratio display unit 8fc, and an estimated temperature rise temperature display unit 8fu. Each physical quantity is numerically displayed on each of these display units. Then, a message display unit 8jm is provided in the determination result display unit 8j.

The above is the basic function of the molding support device 1. This basic function is to maintain the molten state of the resin in the heating cylinder 4 in an optimum state, but on the other hand, the state of the pellet material Rp supplied to the heating cylinder 4 (temperature control state) is also heated. It is closely related to the molten state of the resin in the cylinder 4.

Therefore, the molding support device 1 according to the present embodiment attempts to optimize the temperature control state of the pellet material Rp from the viewpoint of further optimizing such basic functions as the configuration of the main part. , Hereinafter, the configuration of the main part will be specifically described.

First, as shown in FIG. 1, the molding condition data Dm input by the basic data input unit Fi includes data Dmc related to the molding cycle time Tc as attention data. Further, a resin selection unit (selection list) Dms capable of inputting the type of pellet material Rp ... (Resin material R ...) is provided, and a temperature control temperature input unit capable of inputting the temperature (temperature control temperature) of the temperature control unit 6 is provided. Provide Dmt. In this case, the temperature control temperature input unit Dmt assumes manual input. In the present embodiment, if the resin is selected by the resin selection unit Dms, the temperature control temperature Tr is automatically set, but it is considered that it can be arbitrarily input by manual operation. In particular, when the upper limit value Tru and the lower limit value Trm are set and controlled when controlling the temperature control temperature Tr, the upper limit value Tru is selected by the resin selection unit (selection list) Dms of the pellet material Rp ... (Resin). It can be automatically set according to the type of material R ...), and the lower limit value Trm can be set to manual operation. Also in this case, both the upper limit value Tru and the lower limit value Trm can be set to manual operation. Therefore, the basic data input unit Fi is provided with a temperature control temperature manual input function capable of manually inputting the lower limit value Trm (upper limit value Tru if necessary) of the temperature control temperature Tr.

Further, the temperature control temperature data table DT is provided in the internal memory 10 m, and the temperature setting processing unit Fcs is provided as the arithmetic processing function unit Fc. In the temperature control temperature data table DT, the optimum temperature control temperature Tr by the temperature control unit 6 described above is set for each type of resin. In this case, the temperature control temperature Tr itself may be directly set, or as described above, the upper limit value Tru and the lower limit value Tru that are the control range of the temperature control temperature Tr are selected, and the upper limit value is selected. Tru may be set in the temperature control temperature data table DT, and the lower limit value Trm may be set by the temperature control temperature manual input function in the basic data input unit Fi described above.

In this way, if the upper limit value Tru of the temperature control temperature Tr is set in the temperature control temperature data table DT, it is important to control the control of the temperature control temperature Tr by setting the upper limit value Tru and the lower limit value Trm. Since the temperature control temperature, which is higher (upper limit value Tru), can be set automatically, accurate control of the temperature control temperature (target temperature) can be performed even when various control methods are adopted. If the basic data input unit Fi is provided with a temperature control temperature manual input function capable of manually inputting at least the lower limit value Trm of the temperature control temperature Tr, the lower limit value Trm when the upper limit value Tru is automatically set is manually input. It can be set arbitrarily, and if necessary, the entire temperature control temperature Tr (upper limit value Tru and lower limit value Trm) can be easily set manually.

Further, if the resin type is input (selected) from the basic data input unit Fi when the molding conditions are set, the temperature setting processing unit Fcs will receive a temperature control temperature Tr (or upper limit) corresponding to the input resin type. By reading the value Tru) from the temperature control temperature data table DT, it has a function of setting it as the temperature control temperature Tr of the temperature control unit 6. As described above, the temperature control temperature Tr is attached to the temperature control temperature Tr by the heater 6h attached to the hopper 5h, the temperature control temperature by the material temperature control part 6p of the material supply device Prm, and the material drop port 5d. It is a concept including at least one or both of the temperature control temperature Trd by the water jacket 6j.

Next, the temperature control temperature data table DT and the temperature setting processing unit Fcs will be specifically described with reference to FIGS. 1 to 3 and 12 to 15.

In the known model formula proposed by Tadmor described above, as shown in [Formula 104], there is a term relating to the resin material temperature Tro of the resin material R, that is, the generally widely used pellet material Rp. ..

Here, δ is the melt film thickness, km is the thermal conductivity of the melt, Tb is the heating cylinder temperature, Tmo is the melting point, Tro is the resin material temperature, Va and Vb are coefficients suggesting the melting rate, and X is the solid bed width. , Vbx is the cylinder peripheral speed component in the screw width direction, Cs is the solid specific heat, ρm is the liquid density, and λ is the latent heat of melting.

Therefore, if the information related to the temperature control of the temperature control unit 6 in the injection molding machine M can be reflected in the model formula for predicting the plasticization state in the injection molding machine M, a more realistic melting state can be simulated.

Therefore, in the present embodiment, first, the measured value of the temperature of the pellet material Rp (resin material temperature Tro) at the center position of the material drop port 5d shown in FIG. 2 and the estimated value of the temperature in the middle of the pellet material Rp are used. The correlation was verified. In this case, the measured value was measured by arranging a thermocouple at the center position of the material drop port 5d and measuring the temperature. On the other hand, the estimated value was estimated using the arithmetic expression [Equation 105].
Tro (x, t) = f (Trx, Try, X, α, Tc) ... [Equation 105]

Here, Tro (x, t) is the temperature of the pellet material Rp in consideration of the molding cycle time Tc, that is, the estimated resin material temperature, and corresponds to Tro of [Equation 104]. In addition, Trx is the temperature when one side of the cylindrical pellet material Rp shown in FIG. 3 is in contact with the boundary position between the material drop port 5d and the hopper 5h (or the material supply device Prm), and Try is the opposite side. Is the temperature at which is in contact with the heating cylinder 4 near the inlet 3i of the screw 3 for the molding cycle time Tc, and α is an eigenvalue of the resin material obtained by dividing the thermal conductivity kn of the pellet material Rp by the heat capacity.

Then, the test conditions (molding conditions) are different for each type of resin, the estimated value of the resin material temperature Tro obtained from [Equation 105] is obtained, and the above-mentioned actual measurement conditions, that is, the material drop port shown in FIG. The measured value of the temperature of the pellet material Rp at the central position of 5d was obtained. This correlation graph is shown in FIG. In the embodiment, four types of resins were used: "PP (polypropylene)", "GPPS (general-purpose polystyrene)", "POM (polyacetal)", and "ABS (acrylonitrile-butadiene-styrene)".

As is clear from FIG. 12, the estimated resin material temperature Tros and the measured resin material temperature Trom around 80 ° C. have a conspicuous degree of interspersedness as compared with other temperatures, but the correlation between the overall measured value and the estimated value is remarkable. The number is 0.98. That is, a graph showing a 1: 1 upward slope was shown, and the validity of [Equation 105] could be demonstrated. Therefore, the temperature of the pellet material Rp depends on the temperature control temperature Trd of the material drop port 5d and the temperature control temperature Tr of the hopper 5h (or the temperature control temperature of the material supply device Prm), as well as the molding conditions and the physical property values of the resin. [Equation 105] can be used for estimation.

Further, the resin temperature stability was evaluated with the temperature change of the pellet material Rp. FIG. 13 is a graph showing the variation [%] of the resin temperature with respect to the rising temperature ΔTu [° C.] of the resin in the heating cylinder 4. As is clear from FIG. 13, a V-shaped curve graph in which the variation in the resin temperature is minimized as the rising temperature ΔTu approaches 0 was obtained. Further, it was obtained that the larger the rising temperature ΔTu on the negative side, the more the unmelted resin increased, and the larger the rising temperature ΔTu on the positive side, the more the carbides increased.

Therefore, as the number of unstable elements increases, the variation in resin temperature increases. Therefore, in order to reduce this variation, it is optimal that each of the unmelted resin, carbide, and resin rising temperature ΔTu is close to 0. It can be seen that it is a condition for obtaining a good molten state. That is, since the above-mentioned estimated solid phase coefficient Xcs, estimated resin decomposition rate Xrs, and estimated rising temperature ΔTus can be obtained by estimation, respectively, f (Xcs, Xrs, ΔTus) is used as an index showing the resin temperature stability by calculation. A dimensionless function was created, and the correlation with the variation [%] (actual measurement value) of the resin temperature was considered.

FIG. 14 shows a correlation graph of f (Xcs, Xrs, ΔTus) and the variation in resin temperature. In the correlation graph shown in FIG. 14, the correlation coefficient between the value calculated from f (Xcs, Xrs, ΔTus) and the variation in the resin temperature is 0.67 (p = 2.37E-24). Therefore, it is presumed that it is possible to predict the variation in the resin temperature by calculation.

Therefore, the temperature of the hopper 5h (or the material supply device Prm) and the material drop port 5d, that is, the temperature control temperature Th and / or Trd is set as the molding conditions, and the temperature control temperature (Th, Trd) is set to 40 [° C.]. By changing the temperature to 60 [° C.] and 80 [° C.], the variation in resin temperature is actually measured, and the hopper 5h (or material supply device Prm) and material drop port 5d are used for f (Xcs, Xrs, ΔTus). The variation in resin temperature was calculated by making it possible to input the temperature control temperature (Th, Trd) of the above as a molding condition.

FIG. 15 shows the results for each type of pellet material Rp .... In FIG. 15A, “PP” is used as the pellet material Rp, and the temperature is controlled on the condition that the temperature control temperature Trd of the material drop port 5d and the temperature control temperature Tr of the hopper 5h (or the material supply device Prm) are the same. In FIG. 15B, “GPPS” is used as the pellet material Rp, and the temperature control temperature Trd of the material drop port 5d and the temperature control temperature Tr of the hopper 5h (or the material supply device Prm) are made the same. When the temperature is changed on the condition that the temperature is changed, “ABS” is used as the pellet material Rp in FIG. 15 (c), and the temperature control temperature trh of the hopper 5h (or the material supply device Prm) is kept constant at 80 [° C.]. When the temperature control temperature Trd of the material drop port 5d is changed, FIG. 15 (d) uses "POM" as the pellet material Rp and sets the temperature control temperature Tr of the hopper 5h (or material supply device Prm) to 80 [. ℃] The case where the temperature control temperature Trd of the material drop port 5d is changed at a constant level is shown.

As is clear from FIG. 15, in "PP", if the temperature control temperature Tr (Trd, Trh) at the material drop port 5d and the hopper 5h (or the material supply device Pr) becomes high, the variation in the resin temperature becomes large. In the calculation, the variation in the resin temperature at 60 [° C.] was the largest. Regarding "GPPS", "ABS", and "POM", the calculated values and the measured values are almost the same. Therefore, the temperature control temperature Tr (Trd, Th) can be calculated, and the appropriate temperature control temperature Tr (Trd, Thh) for each type of resin, as well as the material drop port 5d and the hopper 5h (or). It was confirmed that the temperature control temperature Trd and Thh of the material supply device Pr) can be combined.

In the molding support device 1 according to the present embodiment, appropriate temperature control temperatures Trd and Thh are set for each resin type by the temperature control temperature data table DT, and if the resin type is selected (input), the temperature setting process is performed. The Fc's section makes it possible to automatically set the appropriate temperature control temperatures Trd and Thr of the material drop port 5d and the hopper 5h (or the material supply device Prm).

Further, the output processing function unit Fd is provided with a function of displaying at least the temperature control temperature Tr (Trd, Thh) on the display 7. FIG. 11 shows a temperature control temperature display unit 8t based on this function. Further, in the data processing unit F, the temperature control temperature Tr (Trd, Thr) is applied to the pellet material Rp based on at least a part of the shape data Dmp of the resin material R in the molding condition data Dm and the molding cycle time data Dmc. In addition to setting the resin temperature calculation formula data to be converted to the temperature (resin material temperature Tro), a resin temperature calculation processing function for obtaining the resin material temperature Tro by the calculation processing based on the resin temperature calculation formula data is provided. As a result, the resin material temperature Tro can be estimated based on the obtained temperature control temperature Tr, so that the temperature state of the resin material temperature Tro itself and the molten state of the resin based on this temperature state, that is, the estimated solid phase ratio Xcs and / Alternatively, it is possible to accurately grasp the information related to the relationship with the estimated resin decomposition rate Xrs, the estimated rising temperature ΔTus, and the like.

Then, the output processing function unit Fd is provided with a resin material temperature display unit 8to that displays the resin material temperature Tro obtained by the resin temperature conversion processing function in the data processing unit F on the display 7, and the resin material temperature display unit 8to is used. The obtained resin material temperature Tro is displayed. As a result, the resin material temperature Tro can be easily confirmed visually, and other information, that is, information can be easily confirmed by comparing with the estimated solid phase ratio Xcs and / or the estimated resin decomposition rate Xrs, the estimated rising temperature ΔTus, and the like. be able to.

Next, the molding support method using the molding support device 1 according to the present embodiment will be described with reference to the flowchart shown in FIG. 16 with reference to each figure.

The molding support device 1 can basically be used when setting molding conditions before the start of production. The operation related to this molding support process is executed by the support program Ps stored in the internal memory 10 m.

First, the operator performs a molding condition setting process in the injection molding machine M according to a normal setting procedure (step S1). In this case, in the molding condition setting process, information related to the normal molding conditions, that is, various normal information (conditions) for operating the injection molding machine M is set.

On the other hand, when the molding condition setting process is completed and the molding support device 1 according to the present embodiment is used, the support can be provided by turning on the predetermined support start key (not shown) and starting the molding support device 1. The program Ps is executed (step S2). As a result, the display 7 displays an input screen (not shown) (step S3).

Then, using the touch panel 7t (basic data input unit Fi) corresponding to the displayed input screen, the molding condition data Dm related to the preset molding conditions and the screw data Ds related to the form of the screw 3 are included. The basic data Do is input (step S4). Specifically, it can be performed by direct numerical input or selective input from the window display. Further, in particular, the type of resin used in connection with the present embodiment is selected from the resin list of the resin selection unit Dms (step S5). As a result, the temperature control temperatures Trd and Thr corresponding to the selected resin are read from the temperature control temperature data table DT, and are set in the temperature setting processing unit Fcs as the temperature control temperature Tr (Trd, Thr) of the temperature control unit 6. (Step S6). Further, it is displayed on the temperature control temperature display unit 8t shown in FIG. 11 (step S7). In this case, if data related to molding conditions, screws, etc. have already been registered, it is not necessary to input at this point. Then, when the input processing of the basic data Do is completed, it is confirmed whether there is any erroneous input or input omission of the data, and the confirmation key (not shown) is turned ON.

As a result, in the solid phase ratio calculation processing unit Fcp, calculation processing based on the input basic data Do and the solid phase ratio calculation formula data Dc is performed (step S8). Since the estimated solid phase ratio Xcs based on the basic data Do is calculated by this arithmetic processing, the obtained estimated solid phase ratio Xcs is at least temporarily registered in the internal memory 10 m. In addition, the decomposition rate calculation processing unit Fcr performs calculation processing based on the input basic data Do and the decomposition rate calculation formula data Dr (step S9). Since the estimated resin decomposition rate Xrs based on the basic data Do is calculated by this arithmetic processing, the obtained estimated resin decomposition rate Xrs is at least temporarily registered in the internal memory 10 m. Further, the rise temperature calculation processing unit Fct performs calculation processing based on the rise temperature calculation formula data Dw (step S10). Since the estimated rising temperature ΔTus is calculated by this arithmetic processing, the obtained estimated rising temperature ΔTus is at least temporarily registered in the internal memory 10 m. Then, the obtained estimated solid phase ratio Xcs, estimated resin decomposition rate Xrs, and estimated rising temperature ΔTus are displayed on the resin state display unit 8f shown in FIG. 11 (step S11). As described above, in addition to the information related to the estimated solid phase ratio Xcs and the estimated resin decomposition rate Xrs, the information related to the estimated rising temperature ΔTus is also displayed, so that the information related to the estimated rising temperature ΔTus can also be confirmed. Therefore, the operator can more accurately grasp the molten state of the resin.

Further, when the estimated solid phase rate Xcs and the estimated resin decomposition rate Xrs are obtained, the determination processing unit Fcj determines the degree of the estimated solid phase rate Xcs and the estimated resin decomposition rate Xrs according to the determination criteria shown in FIG. (Step S12). Then, based on the result of this determination process, the support messages mr, m1, m2, m3 shown in FIG. 10 corresponding to this result are selected, and the support message data Dh corresponding to the selected support message mr ... Output As a result, the output processing function unit Fd displays the support message mr, m1, m2 or m3 shown in FIG. 17 selected based on the support message data Dh output from the determination processing unit Fcj on the message display unit 8j. (Step S13).

17 (a) to 17 (d) show an example of the support message mr, m1, m2 ... In the message display unit 8j. In the example, if necessary, the judgment messages m1j, m2j ... Showing the result of the judgment processing are displayed in the upper row, and the countermeasure message m1p, for taking countermeasures corresponding to the judgment messages m1j, m2j ... In the lower row. m2p ... was displayed.

Specifically, in the case of the support message mr, as shown in FIG. 17A, for example, the characters "in the proper range" are displayed as the determination message mrj. In the case of the example, the countermeasure message is not displayed, but the necessary countermeasure message, that is, the message for further improvement can be displayed even if it is within an appropriate range. Further, in the case of the support message m1, as shown in FIG. 17B, for example, the characters "the resin may be carbonized" are displayed as the determination message m1j, and the countermeasure message m1p is, for example, ". Lower Tm, Tr, Pr, Rm or shorten Tc "(Tm: set temperature for heating, Tr: temperature control temperature, Pr: back pressure, Rm: rotation speed, Tc: molding cycle time). Displayed characters. Similarly, in the case of the support message m2, as shown in FIG. 17 (c), for example, the characters "may generate unmelted resin" are displayed as the determination message m2j, and the countermeasure message m2p is, for example, The text "Please increase Tm, Tr, Pr, Rm or lengthen Tc" was displayed. Further, in the case of the support message m3, as shown in FIG. 17 (d), for example, "Please review the molding conditions" is displayed as the countermeasure message m3p, prompting the so-called complete resetting of the molding conditions. .. In the example, the determination message is not displayed individually, but the determination message is substantially included in the countermeasure message m3p.

In this way, the calculation processing function unit Fc determines the degree of the estimated solid phase ratio Xcs and / or the estimated resin decomposition rate Xrs, and outputs the support message data Dh corresponding to the result of this determination processing. If the output processing function unit Fd is provided with a function of displaying the support messages mr, m1, m2 ... Based on the support message data Dh output from the determination processing unit Fcj on the message display unit 8j of the display 7, the operator can be provided. Can easily grasp the molten state of the resin, which is difficult to judge, and can quickly perform the necessary countermeasure processing.

In particular, in the support messages mr, m1, m2 ..., the judgment messages mrj, m1j, m2j ... Showing the result of the judgment processing and the countermeasure messages m1p, m2p ... for taking countermeasures corresponding to the judgment messages m1j, m2j ... If it is included, the result of the determination process can be confirmed by visual means, so even an inexperienced beginner operator can easily and surely confirm whether or not the molten state of the resin is appropriate, and the molding conditions can be checked. Necessary measures such as setting changes can be taken promptly, and the efficiency and efficiency of molded product production can be improved.

As a result, if the support message m1, m2 or m3 other than the proper message mr is displayed on the message display unit 8j, the displayed support message m1, m2 or m3, that is, the determination message m1j ... And the countermeasure message m1p ... , Perform the process of changing the molding conditions (steps S14 and S15). For example, if the support message m2 (judgment message m2j, countermeasure message m2p) is displayed, "there is a possibility of producing unmelted resin" (judgment message m2j) and "increase Tm, Tr, Pr, Rm, or Tc. ”(Countermeasure message m2p), change the settings to increase the set temperature Tm, back pressure Pr, and rotation speed Rm by one or more, and set to lengthen the molding cycle time Tc. You can make changes.

In this case, the degree of change can be made at the discretion of the operator. At this time, as described above, if the estimated solid phase rate Xcs and the estimated resin decomposition rate Xrs are visually displayed by numerical display, graphic display, or the like, the operator can confirm the degree of deviation from the appropriate range. Therefore, the degree of change in the molding conditions can be determined accordingly.

In particular, the temperature control temperature Tr (Trd, Thh) can be included in the change of molding conditions. Therefore, when it is difficult to change the heating temperature, molding cycle time, etc. of the heating cylinder 4 due to the molding environment, various conditions, etc., the temperature control temperature Tr (Trd, Thh) can be changed. For the change in this case, the temperature control temperature input unit Dmt that can be arbitrarily input by manual operation in the basic data input unit Fi shown in FIG. 1 can be used. The change in this case is reflected in the display of the temperature control temperature display unit 8t. Further, the degree of change or the like can be determined by confirming the display of the resin state display unit 8f and the determination result display unit 8j.

As described above, in the present embodiment, since the temperature control temperature Tr (Trd, Thh) can be changed, it is a useful adjusting means (setting) when it is difficult to change the heating temperature of the heating cylinder 4, the molding cycle time, or the like. (Change means).

Then, when the process of changing the molding conditions is completed, by turning on the reprocessing key (not shown), the estimated solid phase rate Xcs and the estimated resin decomposition rate Xrs are recalculated and the redetermination process is performed. (Steps S16, S8 ...).

On the other hand, if the proper message mr is displayed on the message display unit 8j in step S14, it can be confirmed that the molding environment is good because the molten state is in a sufficient state and is not in a deteriorated state. Therefore, since it is possible to move to the next stage, the end key (not shown) is turned on to end the execution of the support program Ps (steps S14 and S17). That is, the use of the molding support device 1 can be terminated.

As described above, according to the molding support device according to the present embodiment, the optimum temperature control temperature Tr by the temperature control unit 6 that controls the temperature of the material supply unit 5 that supplies the resin material R to the inside of the heating cylinder 4 is made of resin. If the resin type is input from the basic data input unit Fi at the time of setting the temperature control temperature data table DT set for each type and at least the molding conditions, the temperature corresponding to the resin type input from the temperature control temperature data table DT Since the temperature setting processing unit Fcs that is set as the temperature control temperature Tr of the temperature control unit 6 by reading out the temperature control Tr is provided, it is possible to set the optimum (accurate) temperature control temperature Tr that matches the type of resin in particular. It is possible to further improve the efficiency and stabilization of the entire treatment in the heating cylinder 4. Further, since the temperature control temperature Tr in the temperature control unit 6 is at least displayed on the display 7, the operator confirms the temperature control temperature Tr, and from the viewpoint of further improving the plasticization quality, the molding conditions in the molding support device 1 are met. It is possible to change (adjust) the temperature control temperature Tr arbitrarily by using the support function such as change or manually. That is, since the temperature control temperature Tr can be changed in addition to the change in the molding conditions, the adjustment range of the entire molding conditions can be widened, and thus high molding quality can be ensured by further improving the plasticization quality.

Although the preferred embodiment has been described in detail above, the present invention is not limited to such an embodiment, and the present invention is described in terms of detailed configuration, shape, material, material, quantity, numerical value, method, and the like. It can be changed, added, or deleted arbitrarily as long as it does not deviate from the gist.

For example, an example in which the pellet material Rp is applied to the resin material R has been given, but the resin material similar to the pellet material Rp is not necessarily limited to the pellet material Rp. Further, although the molding condition data Dm and the screw data Ds are exemplified as the basic data Do, other data may be included or a part of the exemplified data may be included. Further, although the touch panel 7t of the display 7 is illustrated as the basic data input unit Fi, when the data in the external memory for storing the basic data Do is transferred or transmitted by the communication means, all the data is registered in the internal memory 10m in advance. However, various input means can be applied as the basic data input unit Fi, such as when selecting the basic data Do from all the data. On the other hand, the solid phase rate calculation formula data Dc and the decomposition rate calculation formula data Dr are examples, and do not exclude other calculation formula data from which the solid phase ratio Xc and the resin decomposition rate Xr can be obtained.

The molding support device according to the present invention can be used in various injection molding machines in which a plasticized molten resin is injection-filled into a mold by a screw to perform molding.

1: Molding support device, 2: Mold, 3: Screw, 3f: Screw surface, 4: Heating cylinder, 5: Material supply part, 5h: Hopper, 5d: Material drop port, 6: Temperature control part, 6p: Material Temperature control unit, 7: Display, 8: Data display unit, 8j: Judgment result display unit, 8fu: Rising temperature display unit, 8to: Resin material temperature display unit, 10: Molding machine controller, M: Injection molding machine, R: Resin material, Rp: Pellet material, F: Data processing unit, Fi: Basic data input unit, Fd: Output processing function unit, Fcs: Temperature setting processing unit, Fcp: Solid phase ratio calculation processing unit, Fcr: Decomposition rate calculation processing Unit, Fcj: Judgment processing unit, Fct: Rising temperature calculation processing unit, Tr: Temperature control temperature, DT: Temperature control temperature data table, Dm: Molding condition data, Ds: Screw data, Do: Basic data, Dc: Solid phase Rate calculation data, Dr: Decomposition rate calculation data, Dw: Rising temperature calculation data, Xc: Solid phase ratio, Xr: Resin decomposition rate, Xcs: Estimated solid phase ratio, Xrs: Estimated resin decomposition rate, ΔTus: Estimated Rising temperature, material supply device Prm

Claims (13)

A molding support device for an injection molding machine that injects and fills a molded molten resin with a screw to mold it, and is a material supply unit that supplies the resin material to the inside of the heating cylinder. It has a function to input basic data including at least screw data related to the form of the screw, which includes a temperature control part that controls the temperature, molding condition data related to the molding conditions, and data related to the type of material on the screw surface, and a resin material. Basic data input unit that can input the type, temperature control temperature data table in which the optimum temperature control temperature by the temperature control unit is set for each type of resin material, and at least the resin material from the basic data input unit when the molding conditions are set. Data processing having a temperature setting processing unit that sets the temperature control temperature of the temperature control unit by reading the temperature control temperature corresponding to the input resin material type from the temperature control temperature data table. A molding support device for an injection molding machine, which comprises a part and a molding machine controller having at least an output processing function unit for displaying the temperature control temperature on a display. The molding support device for an injection molding machine according to claim 1, wherein the material supply unit includes a hopper or a material supply device attached to the heating cylinder, and at least one or both of the material drop ports of the heating cylinder. .. The molding support device for an injection molding machine according to claim 1, wherein the resin material is a pellet material. The molding support device for an injection molding machine according to claim 1, wherein an upper limit value of the temperature control temperature is set in the temperature control temperature data table. The molding support device for an injection molding machine according to claim 4, wherein the basic data input unit includes a temperature control temperature manual input function capable of manually inputting at least a lower limit value of the temperature control temperature. The data processing unit includes a calculation formula data setting unit for setting solid phase ratio calculation formula data for calculating the solid phase ratio of the molten resin in the heating cylinder based on the basic data, and the basic data and the solid phase. The injection molding machine according to claim 1, further comprising an arithmetic processing function unit having a solid phase ratio arithmetic processing unit for obtaining an estimated solid phase ratio of the molten resin at the end of weighing by arithmetic processing based on rate calculation formula data. Molding support device. The calculation formula data setting unit is set with decomposition rate calculation formula data for obtaining the resin decomposition rate of the screw surface at the time of molding based on the basic data, and the calculation processing function unit is set with the basic data and the decomposition. The molding support device for an injection molding machine according to claim 6, further comprising a decomposition rate calculation processing unit for obtaining an estimated resin decomposition rate by calculation processing based on rate calculation formula data. In the calculation formula data setting unit, rise temperature calculation formula data for obtaining an estimated rise temperature based on data related to the shear calorific value used in the calculation processing using the decomposition rate calculation formula data is set, and in the calculation processing function unit. The molding support device for an injection molding machine according to claim 7, further comprising a rise temperature calculation processing unit for obtaining an estimated rise temperature by calculation processing based on the rise temperature calculation formula data. The molding support device for an injection molding machine according to claim 8, wherein the output processing function unit includes a temperature rise display unit that displays an estimated temperature rise obtained by the temperature rise calculation processing unit on the display. In the data processing unit, resin temperature conversion formula data for converting the temperature control temperature into the resin material temperature based on at least a part of the shape data of the resin material in the molding condition data and the molding cycle time data. The molding support device for an injection molding machine according to claim 1, further comprising a resin temperature conversion processing function for obtaining the resin material temperature by conversion processing based on the resin temperature conversion formula data. The molding support device for an injection molding machine according to claim 10, wherein the output processing function unit includes a resin material temperature display unit that displays the resin material temperature obtained by the resin temperature conversion processing function on the display. .. The calculation processing function unit according to claim 7, further comprising a determination processing unit that determines the degree of the estimated solid phase ratio and / or the estimated resin decomposition rate and outputs the result of the determination processing. Molding support device for injection molding machines. The molding support device for an injection molding machine according to claim 12, wherein the output processing function unit includes a determination result display unit that displays the result of the determination processing output from the determination processing unit.

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