TWM504984U - Computer-aided injection molding parameter setting system - Google Patents

Description

Computer-aided injection molding parameter setting system

The present invention relates to a computer-assisted injection molding parameter setting system, in particular to a parameter setting expert system that directly imports a model image file to convert the required clamping force, and then calculates and generates various setting parameters and displays them in an animated manner.

Injection molding is one of the techniques for producing plastic products through the injection machine. The main purpose is to feed the solid plastic material particles through the screw of the injection machine. Because of the thread on the screw, the solid plastic material is in the process of screw feeding. Extrusion in the screw thread, the raw material particles rub against each other to generate shear friction heat, and the heat of the external heating sheet is provided, so that the solid plastic raw material is melted into a liquid state and can be injected into the mold cavity of the mold. The shape of the hole is also the finished shape of the design. The liquid melt is injected from the nozzle of the injection machine, and passes through the flow passage and the gate to enter the cavity.

In the field of injection molding process, the operator often does not know the proper setting parameters of the injection machine after the mold is designed and manufactured, and before the mold is hung on the injection machine. Only the trial and error method can be used to match the experience of the operator, and the correction parameters can be adjusted until the finished product quality. To meet the requirements, the main setting parameters of the general injection molding machine include feeding amount, injection temperature, injection speed, injection pressure, clamping force, holding pressure, holding time, cooling time, etc.;

The amount of feed is related to the size of the finished product. The larger the finished product, the higher the amount of injection of the injection machine is. The injection temperature is related to the physical properties of the plastic material. The viscosity of the plastic material with high density is usually higher in the molten state. The setting must be higher to increase fluidity, but must be lower than the temperature at which the feedstock is cracked.

At the injection speed, the flow velocity of the molten plastic flowing through different cross-sectional areas must be considered. It is necessary to consider that there is a jet flow phenomenon when the gate has a small cross-sectional area, and the injection velocity must be adjusted throughout the injection process. In order to achieve the optimization of the quality of the finished product.

Regarding the injection pressure, since the opposite force is generated when the melt is pushed into the cavity of a confined space, the injection pressure must be set greater than the opposite force to inject the melt into the cavity; and the melt is filled into the cavity. Afterwards, due to the physical properties of the material, the volume of the gradually cooled melt is reduced, and the pressure holding pressure can provide a pressure to inject the unhardened melt to fill the space created by the shrinkage in the cavity until the cavity space is completely filled; The above two forces will cause the mold to be opened, so the injection machine must provide a sufficient clamping force to ensure that the mold remains closed during the injection and holding phases.

The cooling time is when the molten plastic in the cavity reaches the solidification time, and the finished product can be taken out without deformation after the mold is opened.

For the operator of the injection molding machine, fully grasping the above parameter settings must rely on the accumulation of experience, and use the trial and error method to make the finished product quality meet the requirements. Usually, the operator must adjust the optimal parameters within five trials and errors.

In view of the fact that the current on-site operator training is not easy, and the number of trial and error times should be reduced as much as possible, the mold flow analysis simulation software has been developed on the market, and the finished model can be established in the software and the runners, injection machines, etc. can be set. Condition, after inputting the parameters, the software will simulate according to the user's injection parameters, and the user can adjust the injection parameters by the simulation result, that is, transfer the trial and error method originally operated on the machine to the computer. The software is executed. When the parameters are adjusted to meet the quality requirements, the operator inputs the parameters to the injection machine to execute the production operation type.

Although the above-mentioned mold flow analysis simulation software can reduce the number of trial and error times of the actual machine, the price is expensive, and after the software completes the parameter setting, it still needs to find the optimal parameters through the trial and error setting, so the operator still has to Injection molding has a certain degree of understanding, in order to adjust the parameters whole. Furthermore, the parameters calculated by the simulation flow simulation software still need to be manually input by the operator, so there is a possibility that the input error and the influence setting are accurate.

It can be seen from the above that the parameter setting of the injection machine is very important for the quality of the finished product. Although the existing mold flow analysis simulation software can assist in the parameter setting, whether it is the basic data input before the operation or the calculation result is input to the injection machine, Because it is a manual operation, there is a possibility of input errors; in addition, the existing mold flow analysis simulation software is not only expensive, but also expensive to use, and the parameters generated by the operation are pure data forms, and the operator cannot easily understand the data. The significance behind this, it can be seen that the existing technology on the setting of the parameters of the injection machine still has not been exhausted, and it is still to be further reviewed and seek a feasible solution.

Therefore, the main purpose of the present invention is to provide a computer-assisted injection molding parameter setting system and method, which utilizes model image file import, set parameter export mode to avoid manual input error problem, and animates the operation result of setting parameter, which can be easily understood. The facts and significance of each paragraph.

The main technical means for achieving the foregoing objective is that the computer-aided injection molding parameter setting system comprises a host and one or more injection machines connected to the host, wherein the host comprises: a plastic material selection module having a material selection page. For the user to select the injection material; a picture file is imported into the module, accepts a mold configuration drawing in the form of a picture file, and calculates the projected area and the total volume, thereby calculating the required clamping force; The module is selected according to the clamping force generated by the module import module to select a suitable injection machine from the connection line or the preset injection machine for the user to select; a parameter calculation module is based on the plastic Material selection module selection material, the machine selection module selects the recommended parameter value corresponding to the injection machine to calculate the parameters of the injection molding; An animation display module displays the operation result of the parameter operation module in an animated manner; a parameter export module is connected with the parameter operation module and each injection machine, so as to perform the operation generated by the parameter operation module. The results are sent directly to the optional injection machine.

It can be seen from the above that the present invention mainly directly imports the model image file to calculate the projected area and the total volume, and then converts the clamping force as the basis for setting the parameters, and the set parameters generated by the calculation are also directly remitted via the connection. For the selected injection machine, there is no need to go through the trial and error method, the operator's experience is low, and the problem of manual input error can be effectively avoided; in addition, the present invention further utilizes various setting parameters generated by the animation display operation, It is convenient to understand the meaning of each segment's injection setting parameters, which is helpful for newcomers to learn the parameters of the injection machine.

10‧‧‧Host

101‧‧‧Injector

11‧‧‧Plastic material selection module

110‧‧‧Material selection page

111‧‧‧Select plastic field

12‧‧‧Graphic import module

120‧‧‧ operation page

13‧‧‧Machine selection module

130‧‧‧ Menu page

131‧‧‧ machine menu

132‧‧‧Machine IP display field

14‧‧‧Parameter computing module

15‧‧‧Animation display module

150‧‧‧ operation result display page

151‧‧‧Cylinder feeding page

152‧‧‧Cylinder pressure keeping page

153‧‧‧temperature parameter page

16‧‧‧Parameter Export Module

17‧‧‧ Defect correction module

1 is a schematic diagram of a system architecture of a preferred embodiment of the present invention.

2 is a schematic view showing a material selection page of a plastic material selection module according to a preferred embodiment of the present invention.

FIG. 3 is a schematic diagram of an operation page of the image import module of the preferred embodiment of the present invention.

FIG. 4 is a schematic diagram of a machine table selection of a machine selection module according to a preferred embodiment of the present invention.

FIG. 5 is a schematic diagram showing an operation result display page of an animation display module according to a preferred embodiment of the present invention.

Figure 6 is a schematic diagram of the injection pressure-preserving page in the operation result display page.

Figure 7 is a schematic diagram of the temperature parameter page in the operation result display page.

FIG. 8 is a schematic diagram of a system architecture of still another preferred embodiment of the present invention.

Figure 9 is a flow chart of the method of the present invention.

Referring to FIG. 1 , a main body 10 is mainly composed of a host 10 and one or more injection machines 101 that form a communication connection with the host 10; wherein the host 10 includes one The plastic material selection module 11, a graphic import module 12, a machine selection module 13, a parameter computing module 14, an animation display module 15 and a parameter export module 16; wherein: the plastic The material selection module 11 has a material selection page 110 (see FIG. 2) for the user to select the injection material; since different plastic materials have different characteristics, the viscosity and the material of the material can be determined after the material is selected. Parameter setting of plasticizing temperature. The material selection page 110 has a selected plastic material field 111 and provides a pull selection menu for the user to select the plastic selected for the injection molding operation. Generally, the supplier of the plastic will use the parameters of the material for injection molding (for example, The recommended value is provided by the pressure maintaining pressure, temperature, etc., and a material database (not shown) can be established on the plastic material selection module 11 by using the recommended value provided by the supplier. The material selection page 110 displays various suggested parameters of the selected plastic, such as density, viscosity, holding pressure, injection pressure, Tm, Tg, recommended maximum material temperature, recommended mold temperature and back pressure.

Referring to FIG. 3, the image import module 12 is configured to generate an operation page 120 for importing a pattern of a mold configuration map, and calculating a projected area and a total volume thereof; further, the figure The file import module 12 is configured to import a mold configuration map (such as a finished model perspective view, a cylinder map, etc.) having a three-dimensional (3D) size, and can select a projection direction on the operation page 120 and calculate a projected area thereof. With the total area, and then use the existing formula to calculate the required clamping force.

The machine selects the module 13 to select a suitable injection machine from the connection force or the preset injection machine according to the clamping force generated by the image import module 12 for the user to select; see FIG. 4 The machine selection module 13 can generate a menu page 130. The menu page 130 has a machine menu 131 and a machine IP display field 132. The machine menu 131 is a pull menu, which can be listed. Connected or preset injection machine for the user to select. When the user selects an injection machine, the IP display field 132 of the machine will set the network address of the injection machine, and will be on the menu page 130. Will show the various items of the injection machine Suggested parameter values such as clamping force, injection speed, screw diameter, injection volume, maximum injection pressure, and minimum mold thickness.

It must be noted that the above-mentioned machine selection module 13 can select a suitable injection machine through the machine menu 131 for the user to connect from the network connection. If there is no connection, an established injection machine can also be utilized. A database is available for selection. The aforementioned machine menu 131 will filter the injection machine of the machine database, and only the injection machine with the clamping force meets the requirements listed on the pull-down menu.

The parameter calculation module 14 calculates various setting parameters according to the material selected by the plastic material selection module 11 and the injection machine selected by the machine selection module 13 and the corresponding suggested parameter values and the established formula. The parameters such as the feeding amount, the loosening value, the residual amount, the screw feeding position, the back pressure, the injection speed, the injection pressure, the holding pressure and the tube temperature set by the injection machine.

The animation display module 15 has an operation result display page 150 (refer to FIG. 5), which is animated to display various parameters generated by the parameter operation module 14; the operation result display page 150 has three The paging includes: a shooting cylinder feeding page 151, a shooting cylinder pressure maintaining page 152 and a temperature parameter page 153; wherein: the shooting cylinder feeding sheet 151 displays the position of the screw feeding, the feeding speed and pressure, and the screw retracting position. The setting value of the reserved position of the screw; as shown in FIG. 6 , the shot retaining page 152 of the shooting cylinder will display the stereogram and the cylinder diagram of the finished model that was previously imported, and the drawing surface is animated to show the advancement of the screw. The plastic filling state shows the set parameter values such as the injection speed, the injection multi-stage position, the pressure holding position, the holding pressure, the dwell time and the injection pressure; and as shown in Fig. 7, the temperature parameter page 153 shows that the feeding section is different. The temperature set value includes the nozzle segment, the first segment, the second segment and the third segment, and a suggested mold temperature is displayed.

The parameter export module 16 transmits the setting parameters generated by the calculation of the parameter calculation module 14 to the selected injection machine through the network connection, and the setting is automatically completed by the injection machine, and the operation is performed by the operator on the spot to complete the product. output. In this embodiment, the parameter export module 16 will set parameters. Converted to CSV file, and then transmitted to the selected injection machine via the network, whereby the parameter setting of the injection machine no longer needs to be manually input by the operator, which can effectively avoid operator input errors.

From the above, the specific composition of a preferred embodiment of the present system and the specific technical content of each module are known. Please refer to FIG. 8 , which is another preferred embodiment of the system. The basic architecture is substantially the same as that of the previous embodiment. The difference is that the embodiment further includes a defect correction module 17 . The correction module 17 has a molding defect database for collecting defect information such as short shot, burr and shrinkage of the molded product in the injection molding operation, so as to correct the aforementioned setting parameters and pass the corrected setting parameters through the parameters. The export module 16 is re-exported to the injection machine to eliminate defects in the molded product.

According to the working principle of the computer-aided injection molding parameter setting system of the present invention, it can be seen that the present invention can further provide a parameter setting method, as shown in FIG. 9, which includes the following steps: accepting the injection material (S1) selected by the user, and Obtain the recommended parameter value of the selected material; accept the user to import a mold configuration map in the form of a map, calculate the projected area and total volume (S2); calculate the required lock according to the projected area and total volume described above. Mould force (S3); according to the above-mentioned clamping force, select a suitable injection machine (S4); calculate various setting parameters according to the selected material and the recommended parameter value of the selected injection machine (S5); Each setting parameter (S6); the setting parameter generated by the calculation is directly sent out to the selected injection machine (S7), and the selected injection machine self-completes the parameter setting.

According to the above description, the parameter setting system and method of the present invention have at least the following advantages:

1. Effectively avoid manual input errors: This new model can calculate the projected area and total volume of the imported model, which means that the projected area and total volume of the model are directly converted from the imported image without the need to manually input the data, and then the lock is calculated. The mold force is the basis for generating the set parameters as an operation, so that manual input errors can be effectively avoided.

2. Evaluating the production capacity when designing the product: In the product design, the required molding condition parameters can be calculated by using the new import model configuration diagram, which is advantageous for the molding factory to judge whether the product can use the in-field machine during product design. The stage is produced.

3. Conveniently inspect the selection of the production machine: This new model is connected with the injection machine so that the appropriate production machine can be screened after the results of the preliminary parameters are output, so as to avoid the user being under-capacity due to lack of experience or Excessive injection machine, and can effectively reduce the production of defective products and waste of energy. In addition, the machine can also be used to schedule the use of the machine, so that users can understand the state of the machine in the factory and manage the production schedule.

4. Teaching function: This new type shows the relationship between screw injection and filling into the cavity melting amount, so that the user can understand the filling process of the melt in the cavity in each segment, and use the animation in addition to providing friendly and In addition to the display interface of the affinity, it is also convenient for the user to understand the meaning of the three different injection setting parameters and has the teaching function.

10‧‧‧Host

101‧‧‧Injector

11‧‧‧Plastic material selection module

12‧‧‧Graphic import module

13‧‧‧Machine selection module

14‧‧‧Parameter computing module

15‧‧‧Animation display module

16‧‧‧Parameter Export Module

Claims (9)

A computer-assisted injection molding parameter setting system comprises a host and more than one injection machine connected to the host, wherein the host comprises: a plastic material selection module having a material selection page for the user to select the injection material; The file is imported into the module, and is accepted into a mold configuration drawing in the form of a drawing file, and the projected area and the total volume are calculated, thereby calculating the required clamping force; the machine module is selected according to the drawing file. The clamping force generated by the module calculation is selected from the connecting line or the preset injection machine to select a suitable injection machine for the user to select; a parameter computing module is selected according to the plastic material selection module, the machine The selection module selects the parameters corresponding to the injection machine to calculate the parameters of the injection molding; an animation display module displays the operation result of the parameter operation module in an animated manner; a parameter export module, The parameter calculation module and each of the injection machines are connected to directly export the operation result generated by the parameter calculation module to the selected injection machine. The computer-aided injection molding parameter setting system according to claim 1, wherein the image importing module has an operation page for importing a mold configuration map having a three-dimensional size, and selecting a projection direction on the operation page, Calculate its projected area and total area. The computer-aided injection molding parameter setting system according to claim 2, wherein the animation display module has an operation result display page, wherein the operation result display page has three pages including: one shot pressure-preserving page, one shot cylinder feeding page and a temperature parameter page; wherein: the shooting tank feeding page is used to display the position of the screw feeding, the speed and pressure of the feeding, the screw retracting position, and the set value of the screw reserved position; the injection pressure maintaining page shows the previously imported The mold configuration map is displayed in an animated manner; the temperature parameter page shows different temperature settings for the feed section and displays a suggested mold temperature. The computer-aided injection molding parameter setting system according to claim 3, wherein the machine selects a module to generate a menu page, the menu page has a machine menu, and the machine menu selects a pull menu to list the optional items. The injection machine; the recommended parameter values of the selected injection machine are displayed on the menu page. The computer-aided injection molding parameter setting system according to claim 4, wherein the recommended parameter values of the selected injection machine on the menu page include: clamping force, injection speed, screw diameter, injection amount, maximum injection pressure, and minimum mold thickness. The computer-aided injection molding parameter setting system according to claim 4, wherein the menu page of the selection module of the machine further comprises a machine IP display field to display the network address of the selected injection machine. The computer-assisted injection molding parameter setting system according to claim 4, wherein the material selection page of the plastic material selection module has a selected plastic material field, and provides a pull selection menu for the user to select the plastic selected for the injection molding operation, The plastic material is selected on the module and a material database is established. According to the computer-aided injection molding parameter setting system described in claim 7, the recommended parameters of the selected plastic on the material selection page include density, viscosity, holding pressure, injection pressure, Tm, Tg, recommended maximum material temperature, and recommended mode. Warm, back pressure. The computer-assisted injection molding parameter setting system according to any one of claims 1 to 8, further comprising a defect correction module, configured to collect defect information and establish a molding defect database, and set parameters The correction is made and then re-exported to the injection machine through the parameter export module.