TW461853B - Method for automatically calibrating injection conditions of an injection molding machine - Google Patents

Abstract

Disclosed is a method for automatically calibrating injection conditions of an injection molding machine. The method comprises the steps of: a first memory device for storing abnormal conditions and parameters of injection conditions of corresponding situations; trial-running the injection of products and determining whether the products are normal; if the products are determined to be abnormal, selecting a plurality of abnormal conditions and states of the abnormal conditions to be stored in a second memory device; outputting appropriate parameters of injection conditions selected from the first memory device by a calculation module based on data of the second memory device, to serve as corresponding parameters of injection conditions for automatically calibrating the injection molding machine; and trial-running the injection of products and determining whether the products are normal.

Description

V. Description of the invention (l) [Field of the invention] The present invention has a method 'especially there are output conditions parameters, [first-gang technology] traditional injection into the condition parameters, the state-by-item adjustment mechanism is adjusted to the abnormal state of the injection, injection The condition parameter takes a long time. The edge, flow pattern, surface bubble, rupture, etc. Force, each segment of the injection of different models require different injection conditions parameters, which does not meet the control system control of 36 36 5 5 8 The servo motor type is designed to re-view the normal finished products of each part of the production table, according to the number, using human power, and the human injection molding surface shrinks. Injection molding speed, plus or brand machine condition parameters. Therefore, based on the production efficiency molding machine, a control system is revealed, which includes one speed = automatic correction of the injection conditions of an injection molding machine. It is selected based on the abnormal conditions of the test product. Appropriate injection method for automatic correction of injection molding machine. For a product, after the operator sets the abnormal state of the injection of the machine, the injection condition parameter ′ is used to make the injection of the machine according to the abnormal condition. However, injection molded products often have several abnormal state adjustments to correct the relative relative conditions of the machine to find out the corresponding relative injection condition parameters. Often the force cannot find a more accurate abnormal state of the relative injection product including insufficient filling, woolen silver, anti- Warping, scoring marks, not easy to leave the mold, the injection conditions of the stretcher include the injection blanking amount, loosening amount and temperature of each section. In addition, the performance of the plant is completely different. Each type of machine requires different plastics, and each requires a separate injection manpower to find out the requirements of the relative injection conditions. The Chinese patent system announced on June 11, 88 has a motor-driven injection system with improved response. It includes an injection unit driven by a servo motor and a rate feedback control circuit. The rate feedback control

461853

V. Description of the invention (2) The circuit includes a speed sensor to sense the speed of the servo motor and use it as a _sensing rate value. An amplifier can follow the measured speed value and a rate command value generated from the speed sensor. The difference results in a value command signal instruction for the torque command value for the servo motor, and a motor drive can control the servo motor in accordance with the command torque value. The control system includes: a sense of dust force. A driving system is provided for a screw installed in an injection cylinder = for sensing the pressure of the resin and generating the sensing pressure-the sensing pressure signal indication; a correction amplifier is connected to the pressure sensor, the repair U] The amplifier can amplify the sensed pressure signal to generate an amplified signal and use it as a correction value of the torque command value; the two adders connected to the amplifier and the correction amplifier can add the torque command value to the The correction value of the torque transfer command value is added and the result β of the motor driver supply is added. The control system of the invention patent does not disclose how to correct the injection of the injection molding machine. Method. In view of this, the present invention improves the above shortcomings. The first memory device ^ abnormal conditions and injection conditions parameters corresponding to the conditions, the current test product products ...% abnormal conditions and the abnormal conditions are input into the second memory device For storage, the calculation module selects the appropriate injection condition parameter output from the first memory device according to the data of the second memory device and outputs it for automatic correction by the injection molding machine. Because the injection product may often have several abnormal conditions at the same time, it must be It is necessary to eliminate several kinds of abnormal conditions in order to produce normal production. However, to adjust the injection condition parameters once, the injection molding machine needs very complicated corresponding injection condition parameter data.

V. Description of the invention (3)-It is difficult or impossible to produce the parameter data of the piece. In order to simplify the very complicated corresponding injection condition parameter data, the present invention sets various combinations of abnormal conditions to correspond to the injection condition parameter data. When correcting the parameters of injection and parts, the mold data is detected one by one in each section of the mold to provide reference values for correcting the injection conditions. The injection molding machine is adjusted by the mold * data and # conditions and the test injection is performed until the injection molding. The machine is adjusted to the precise injection conditions. [Summary of the invention] The main object of the present invention is to provide an automatic correction method for the injection conditions of the injection molding machine. "'It sets the corresponding injection condition parameter data according to abnormal conditions. = When the injection condition parameters are modified, several abnormal conditions are selected in the parameters. The data is selected to correct the injection conditions to adjust the test injection molding machine and perform test injection until the injection molding machine is adjusted to the precise injection conditions, so it is not necessary for the operator to judge the adjustment of the injection of the machine with experience. efficacy. The noon parameter makes the secondary object of the present invention to provide an injection molding machine injection method, the first method of which the first memory device stores a number of abnormal conditions and conditions = injection condition parameters, first test the product and then select the abnormal condition And the different brother's second memory device storage 'calculation module selects the appropriate injection conditions from the _memory device for input based on the material of the ::: device, for the injection molding machine to automatically correct the relative injection condition parameters, and then Re-test the product and select the abnormal condition and the abnormal condition, and then output the appropriate injection condition parameters by the above method for the injection molding machine to automatically correct the relative injection condition parameters, and continuously re-test the product until the injection 4 6 18 5 3 V. Description of the invention u) Adjusting and controlling the product quality of the injection molding machine According to the present invention, the steps are as follows: the first injection condition parameter determines the test shot production status and enters the second data. From the first injection molding machine, the product is judged to be accurate. Shoot and improve the product injection molding a number of memory devices; if the test sample is abnormal, the memory device storage memory device is selected from School. No normal normal phase. The ejection bar of the machine with production efficiency up to the condition of storage stores several abnormal ejection products and selects abnormalities: the calculation module generates appropriate injection-to-injection conditions to make the invention effective. Whether the product is normal and the abnormal condition are output according to the second parameter of the 100 million output condition; re-trial shot production [Illustration of the diagram] In order to make the above and other purposes of the present invention easy to understand, the following describes the preferred implementation of the present invention The detailed description is as follows: The features and advantages can be further illustrated and matched with the attached drawings. Figure 1: First flowchart of the preferred embodiment of the present invention; Figure 2: Light second diagram of the preferred embodiment of the present invention And FIG. 3 is a third flowchart of a preferred embodiment of the present invention. [Illustration of drawing number]

Accurately includes the corresponding constant; love device, and the product is obvious, wide. L 100 First process 101 Enter the pass code 102 Enter the mechanical parameter setting interface Calculate mechanical parameters 104 Enter the first injection condition parameter setting interface 200 First flowchart 201 The first memory 202 reads the second injection condition parameters

c: \ Program Files \ paten t \ PK6974.ptd Page 7 V. Description of the invention (5) 203 Calculate the second injection condition parameter 204 Calculate the clamping force 205 Determine the clamping force 300 The third flowchart 301 Machinery execution feed 302 Machinery Perform a semi-automatic test injection molding abnormal state of injection 303 determine the test product 3 0 5 input abnormal state 306 read the injection condition parameters [Explanation of the invention] The method of automatic correction of the injection conditions of the injection molding machine of the present invention, several abnormal conditions are set to correspond to the injection The condition parameter data is mainly based on: when the condition parameter is selected, the abnormal condition is selected to correct the injection bar = until the injection molding machine is adjusted to the precise injection condition. The operator must adjust the very complicated corresponding injection condition parameter data. As shown in the first figure, in the present invention, when the first process 100 is performed, the injection molding machine of 轸 e · is accurate. The injection molding machine judges whether it is; whether it is positive or not (setting the parameter screen. The injection is broken :: Erxunxin 'cannot enter the parameter setting interface 102, at this time, the input? Broken is 2 when entering the setting machine 2] · The interception number of the injection cylinder and the screw: 1. The diameter of the screw and the inside. The calculation module calculates the ratio ^ The red diameter is stored in a memory parameter 103, among which ^ 1 the cross section of the spiral birch and 2. mechanical lock The cross-sectional area of the screw such as the mold force = 0.75 x (screw diameter) 2 Mechanical clamping force = _75 Next, enter the-injection direct control) 2 × maximum 1 force. Enter the parameter setting interface 1004, input the use information 461853 V. Description of the invention ⑻-After the material, finished product weight and finished product projection area are stored in the memory, they are ready to enter the second process. Please refer to the second figure again. When the injection molding machine of the preferred embodiment of the present invention performs the second process 200, firstly, the injection condition parameters corresponding to the abnormal conditions and conditions are stored in the first memory device 201, and The first memory device 201 reads the second injection condition parameter 202, which reads the temperature of each section, the injection speed of each section, the injection pressure of each section, and the injection position of each section. The injection condition parameters are output to the machine. Then calculate the second injection condition parameter 203 and output it to the machine, which calculates 1. Feed stop position and 2. Loose stop position, etc., where the feed stop position = finished product weight / screw cross-sectional area, Qin withdrawal position = feed stop position. Next, calculate the mechanical parameters of the clamping force 204, where the clamping force = the projected cross-sectional area of the finished product X the injection pressure 8075 χ (mold cylinder diameter) 2). Next, determine the clamping force of 205. When the clamping force is greater than 14, the injection molding machine issues an alarm [insufficient clamping force]. When the clamping force is less than 140 psi, the set clamping force is equal to the calculated clamping force. At this time, it is ready to enter the third process. Please refer to the third figure again. When the injection molding machine according to the preferred embodiment of the present invention performs the second process 300, 'first press the semi-automatic start key to start the machine' to cause the machine to perform feeding 301, and then make the machine perform semi-automatic Test injection molding 302 'After the semi-automatic test injection molding is performed mechanically, watch the injection finished product', and then determine whether the test injection finished product 03 03 is normal. When the finished product is normal, the injection conditions of the injection molding machine are automatically corrected. When the finished product is abnormal

2 'B 6 3. 5. Description of the invention ⑺ " " " When it was determined that the test product was abnormal, several abnormal conditions were selected and entered into a second memory device to store 304. The abnormal conditions included insufficient filling and burrs , Streaks, surface shrinkage, silver bars, reverse warp, spray marks, difficult to release from the mold, air bubbles burst, etc., and then judge the situation of this abnormal condition into the second memory device storage 305 'This situation includes mild, obvious and serious Wait…. A calculation module selects an appropriate injection condition parameter output 306 from the first memory device according to the data of the second memory device, so that the injection molding machine can automatically correct the relative injection condition parameter, and then test the product and judge whether the product is normal. When the injection molding machine performs injection, the pressure of each section of the mold has a certain variability and the molding pressure is not a threshold value. Therefore, the present invention detects the molding data one by one in each mold to provide a reference value for correcting the injection conditions. Based on the molding data and abnormal conditions, the injection molding machine is adjusted and a test shot is performed. After testing the product and determining that the product is abnormal, the present invention selects the abnormal condition of the finished product to perform normal injection conditions and performs test injection until the injection molding machine is adjusted to the precise injection condition.原因 The abnormal state of test injection molding is caused by the following reasons: insufficient filling [short shot] including insufficient plastic, too low melting temperature, poor back pressure setting, too low injection pressure [or speed], and too short injection time; burr [ Flush] includes reasons such as too high injection pressure, too long melt time in the tube, too high melt temperature, too long cycle time, and insufficient clamping force; flow mark includes flow pressure that is too low, melt The residence time in the material tube is too long, the temperature of the material tube is too low, the temperature of the injection nozzle is too low, and the cycle time is improper; the surface shrinkage (sink mark) includes too high melt temperature, too low injection pressure (or injection speed), and cooling time Defective and holding pressure [or

C: \ Program Files \ patent \ PK6974.ptd page 461853 V. Insufficient invention description (8)] Insufficient and other reasons, the silver streaking includes the temperature of the material tube is too high, the screw speed is too fast, and the nozzle is too small , Too hot or blocked, the shot volume has exceeded 80% of the mechanical capacity, there is gas or water in the melt, and the material is not completely cleaned, etc .; warping (war pi ng) includes injection pressure or improper time, melt The time in the tube is too long, the temperature of the barrel is too low, the temperature of the injection nozzle is too low, the cycle is improper, the pressure is not uniform, and the internal pressure is too high; etc. High or too low], nozzle nozzle is too small, and nozzle pressure is improper, etc .; the surface blur (surf ace haze) includes insufficient injection pressure, too long time for melting the glue in the tube, the temperature of the tube is too low, and the temperature of the nozzle is too high Low and improper cycle time; bubbles [voilds] include reasons such as too high injection temperature, too low injection pressure, too short retention time, insufficient holding material, poor tube temperature setting, too high injection rate and insufficient back pressure; Cracks include transitions Among other reasons too short when filling and cooling.

Although the present invention has been disclosed with preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention Subject to the scope of the attached patent application.

C: \ Program Files \ patent \ PK6974.ptd Page 11

Claims (1)

Sixth, the scope of patent application is 1 automatic correction method of injection conditions of the molding machine. The automatic correction method of injection conditions includes: U number memory device stores injection bars corresponding to abnormal conditions and conditions to test the product and determine whether the product is normal. = This If the test product is not normal, select the abnormal condition and the abnormal condition and input it to a second memory device for storage; 5 The module will output the appropriate injection condition parameters from the first memory to the injection according to the data of the second memory device. Molding machine, t injection molding machine automatically corrects the relative injection condition parameters; and then test the product and judge whether the product is normal: = Ϊ 出! The automatic correction method selects abnormal conditions for correction Λ until the injection molding machine is adjusted to the precise injection conditions. The injection conditions of the injection molding machine described in item Γ3. The first memory device is an IC card. F area; the injection bar of the injection molding machine described in item ^ I 4 The injection conditions are in the second middle. The injection conditions include the temperature of each section, the injection pressure of each slave, and the location of each section. The injection conditions of the injection molding machine as described in the above item. Τ additionally calculates the feeding stop position and the loosening stop position according to the patent application scope No. 4 If # Α ... " Ancient: r? Described injection molding machine injection condition automatic correction method, where the feeding stop position is equal to the weight of the finished product / Page 12: C: \ Program Files \ patent \ PK6974.ptd 4 6 丨 85 3 6. Cross-sectional area of the bar for patent application. 6 Dynamic correction method according to the scope of the applied patent, 〇7, Automatic correction method based on the patent application, projected area, etc. 8, Automatic correction method according to the applied patent, flow pattern, surface bubbles, cracks, etc. 9, Automatic correction method according to the applied patent Significant and severe. No. 4 JS fyr ... where the injection conditions of the injection molding machine from this system are 5 and the stop position is equal to the feeding stop position + 5 off the 1st, the injection conditions of the injection molding machine described by the member also include the use of plastic 、 Weight of finished product and injection molding conditions β The injection conditions of the injection molding machine as described in item 1 in Lilihan, where the abnormal conditions include insufficient filling, burr shrinkage, silver bars, reverse warpage, spray marks, and difficulty in leaving the mold The injection conditions of the injection molding machine described in item 8 of item 0, where the abnormal conditions include slight, clear 10, the automatic correction method of the injection conditions of the injection molding machine described in item 1 of the scope of the patent application, among which Take the molding data of each section of the mold as # 5, the test value, and adjust the injection molding machine based on the molding data and abnormal conditions and perform a test shot. C: \ Program Files \ patent \ PK6974.ptd Page 13