TWI221809B - Method of controlling/regulating an embossing procedure and drive control device for injection molding machines - Google Patents

Abstract

The invention relates to a novel method for producing precision parts, especially flat optical data carriers. According to the invention method, the embossing procedure is program-controlled on the basis of the path function of an electromechanical or hydraulic drive of the driven mold half. When a servomotor is used, the internal path signal thereof can be directly used for calculating the path function or for operating the program control. The novel method allows for a complete speed control of the embossing phase. All factors that can be mechanically influenced from the exterior are detected in more detail for the conditions before and during the embossing phase, thereby allowing for an optimum precision and reproducibility.

Description

1221809 A7 __B7____ 5. Description of the Invention (I) [Detailed Description] [Field of Invention] The present invention relates to a method for controlling / adjusting, for controlling the seal of the manufacture of precise parts (PrSzisionsteil, English: precision part) : Emboss) process, the precise part especially refers to a flat optical data carrier. This method uses an injection molding machine with two mold halves: a driven mold half and an "opposite mold half" ", Wherein the driven mold half is moved by a motor-type or hydraulic stamp driver, and the driven mold half is connected with the injection molding machine during the basic adjustment and the entire injection cycle to cause the driven mold half and "Power joint" between the opposing mold halves. In addition, the present invention relates to a driving and controlling / adjusting device for driving and controlling / adjusting the shape joint side of an injection molding machine driven by a motor and / or hydraulic pressure, the injection molding machine having a driven mold half And an opposing mold half, the injection molding machine uses a controlled / adjustable stamping process to make precise parts, especially flat data carriers, in which the driven mold half and the opposing mold half are joined by force The effect can be caused by the connection means of the injection molding machine. [Background of the Invention] A conventional injection molding machine basically has two mold halves. The movable first mold half can be moved 'relative to a driver carrying plate using a drive system to close and open the mold. For example, the motion of the mold can be controlled based on a function of path, pressure, and / or speed. The British patent GB-PS 1 226 118 proposes to control the trend of the speed of the mold movement for a specific section of an injection molding cycle according to a preset program. When using a hydraulic cylinder as the drive system 3 This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)

1221809 A7 __ _ ____B7___ 5. Description of the Invention (V) (Please read the notes on the back before filling this page) In the system, the speed of the movable mold half can be controlled and / or adjusted by the amount of oil. Therefore, by using additional temperature parameters, it is possible to use high accuracy to ensure that the movable mold half has an optimal speed trend. In the traditional injection molding operation, the two mold halves are pressed together with a large clamping force, so that the mold does not stretch even under the maximum pressure of the molten plastic. In the traditional injection molding, a typical situation is that the mold is completely filled, which is a post-pressing phase that lasts for a long time. The subsequent pressure stage is held in the direction of a hydraulic pressure by the "injection screw" through the flange (Anguss, lug). Regarding the types of injection molding machines used to manufacture flat data carriers, the data is stamped (Pragen) and printed (AusprSgen) in the center. Especially for making optical data carriers or CDs. The following special stages of the manufacturing cycle are different: One-die filling and one-time stamping and printing of data information-one after the cooling stage (Nachdruck) to obtain the surface structure (even when the injection molded part shrinks) Of course, in the traditional injection molding operation, the precise cavity of the injection molding mold can be used to determine the finished injection molding parts with certain specifications. On the contrary, in the case of stamped injection molding machines, the final shape of the product is in the mold. The cavity filling operation (this operation is initially only partly) is then pushed together in the two mold halves; it is considered to be achieved. When manufacturing a flat data carrier, the imprinting phase is the key phase. During the imprinting phase, the typical The situation is directly through the two mold halves using compressed pressure for effective back pressure operation of the entire area, for this purpose, a driven mold half is moved to the opposite mold half. "Back pressure" 4 paper Standards apply to China National Standard (CNS) A4 specifications (210 X 297 mm) 1221809 A7 _____B7_____ V. Description of the invention (^) (Please read the precautions on the back before filling this page) The meaning is to use the force exerted by a mold part in a flat shape. This "back pressure operation" is to apply the "hydraulic" back pressure (they previously used a traditional injection molding injection nozzle to act on the mold in a point shape) Proper replacement is achieved by transmitting pressure through the liquid melt. The driven mold half moves to a predetermined position to produce a flat data carrier before the injection operation 'and remains in this position for approximately the duration of the injection operation. Then used This compression pressure pushes the associated platen or driven first mold half onto the second (opposite) mold half and applies imprint pressure. European patent EP 0 224 783 mentions the use of an injection molding The method of molding the lens and flat data carrier step by step from plasticized thermoplastic plastic = ★ The first step is to form a pre-enlarged closed mold cavity, which is suitable for containing the plasticized resin without causing it inside Considerable opposite pressure, and the volume of the cavity is larger than the maximum volume occupied by the plasticized resin (which is used for injection molding) under normal pressure. Then a certain volume of plasticized resin is injected (injected) into the pre-amplified mold cavity, and this volume is slightly larger than the object to be formed. ★ The machine uses a controlled force to make the volume of the mold cavity Reduce, redistribute the resin so located, and then maintain the used force at least until the resin solidifies, so that the resin is compressed in the cavity. ★ But the compression step is already completed before the injection step ends The updated US patent US 4,9Π, 84〇 advocates the following three steps for the manufacture of flat precision parts such as “Recording Disk”: 5 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 1221809 A7 __B7____ 5. Description of the invention (') (Please read the precautions on the back before filling in this page) One by one after the plastic is shot, in the case of a certain gap size, the first The speed of a small plate is controlled, and a speed program is defined one by one with respect to the gap amount of the first tool half relative to the second tool half. , One by one, and / or aspects concerning the period to successive movements of the first tool half. Line-so the sequence is as follows: first, an accurate or predetermined gap size is required or preset; second, a quantitative supply of molten plastic is injected; third, a preset speed program is used for imprinting. Some steps of the speed program's trend can be achieved according to a certain gap position or time period. Among them, it is necessary to ensure that the individual steps (especially at the end of the stamping step) are pressure controlled. These claims are premised on accurate gap measurements. The quality of the entire control / adjustment operation is therefore related to the accuracy of the instantaneous gap measurement or the corresponding evaluation of the Echtzeit method (Auswertung). The measurement of the gap between the matrices is laborious, so in practice an alternative measure is used, such as measuring the distance between the mold carriers, as proposed by US Patent No. 4,917,840. The imprint adjustment operation based on the continuously measured gap amount between the two mold halves can only include the stage where the gap becomes smaller or the stage where the material is distributed, but not the stage where the force is generated during printing. Therefore this solution requires real-time additional force measurement to accurately control / adjust the print program. Therefore, according to the newer literature, this speed-controlled movement can only begin when it moves to a precisely defined position or in a certain gap. This solution according to US 4,917,840 places high demands on the sensor technology and therefore has associated disadvantages. 6 This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 male f-1221809 A7 ____B7_____ V. Description of the invention (<) [Explanation of the invention] (Please read the notes on the back before filling this page The purpose of the present invention is to provide a method and device for program control with a pressing process, which can ensure a high degree of accuracy and reproducibility of the final product and can be operated with as few sensing systems as possible. The method is characterized in that the control / adjustment of the pressing process is controlled / adjusted according to the program according to the path function of the driven mold half. The inventors have discovered that the quality of the injection-molded parts produced at the moment of the stamping is not The main one. The type of embossing process for optimal material distribution in the mold cavity and subsequent compression pressure is much more important for the properties of the product. In the above-mentioned background technology solutions for manufacturing flat precision parts, Try to include the control / adjustment of the applied force or pressure into the stamping stage in stages to avoid deviations from the target size The difference is too large. In addition, the European patent EP 0 244 783 maintains the force used for stamping at least until the resin is solidified. In a specific injection molding machine, the compression force is maintained by a frame carrier or column and caused accordingly A force bonding effect. When the force required for imprinting is large, the magnitude of the expansion of the machine is 0.5 mm to 1 mm or more. For example, the thickness of the data carrier is 0.4 to 0.8 mm. During stamping, when the maximum pressure is applied to the movable first mold half or to the driven plate, the second mold half escapes with the opposite plate by a certain amount of machine expansion distance. This amount It can be larger than the thickness of the data carrier. The present invention proposes to reduce the control / regulation effect of the imprinting process to one, based on the path function of the driven board or the driven mold half. 7 This paper size applies Chinese national standards (CNS) A4 specification (210 X 297 mm) 1221809 A7 ______B7____ 5. Description of the invention (b) 2. A program control / adjustment (Please read the precautions on the back before filling this page) The injection molding machine has This method can be used to make basic adjustments to the machine. For this, please refer to DE 36 31 164. After each mold change, the machine is pre-adjusted before the first injection cycle starts. It will be basically closed according to the maximum pressure. The mold force is determined. For example, the movable part is positioned via a column nut driver so that in the basic position, the tool acts on the tool when the tool is closed [Spritzling English: injection molding] The pressure system achieves a force slightly greater than the maximum required for stamping. In the case of a knee lever driver, these levers are fully straightened when the tool is closed. The open path can be adjusted on a case-by-case basis. However, the start and end points of the movement of the driven plate can be accurately determined. -Line This novel invention solves the problem of continuous measurement of the machine expansion or the gap between the two mold halves by ingenious methods for the control / adjustment of the stamping process. Both the machine expansion and the gap amount are related to the continuously changing stamping force. In addition, the present invention can also eliminate the related sensing and evaluation techniques for measuring the trend of the printing power in terms of adjustment techniques in the printing process. As will be explained later, in extreme cases, the most important deviation from one cycle to one cycle can be corrected by a central post nut adjustment device and therefore considered by program control / adjustment. A big advantage is that the use of expensive "real time" sensor technology during the imprinting phase can be reduced. Related and more complicated adjustment techniques can be omitted. This novel solution takes into account the most important changing parameters, especially the temperature factor (which has an effect on the interval ratio), and is considered in a cyclical fashion through a program flow. Regarding the compression method, the paper size of this paper applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 1221809 A7 ____B7 V. Description of the invention (Ί) In general, it is mainly all possible deformations, including the expansion of the column. The path function contains this particular specific driving means. With this novel solution, the beginning and end of the print program flow have been determined in the basic adjustment of the machine. Therefore, for a normal injection molding operation in the most delicate stage of stamping, a special "instant" sensor and adjustment process can be omitted. Therefore, the entire imprinting process can be controlled according to the path function of the motor drive by a selectable program. The present invention can make many particularly advantageous designs. For this purpose, reference may be made to items 2 to 12 and 14 to 21 of the scope of patent application. This novel solution can be used in an injection molding machine of the type described in the applicant's international patent WO 00/47389, where the present invention is the best solution. It is a machine with a so-called long stroke and a short stroke. This short stroke is sufficient to automatically remove the CD from the open mold with a gripper (Greifei *). Long stroke is mainly used for die change. In the market, CDs are required to have many different basic structures and an infinite number of variations in the materials to be specially imprinted. In general, the number of individual series is not large, but it can reach tens of thousands. The unusually rapid change of mold application affects a particular type of injection molding machine. In some cases, the mold or related mold (Matrize) is only in the injection molding machine for a quarter of an hour or half an hour and then replaced with another. In addition to flawless production, the economic benefits mainly lie in two almost equally important factors: ： the cycle time of a CD (Zyklus, English: cycie), including its required drying operation time, ㈡ used to print When the mold is put into the basic mold to change the information, 9 paper sizes are applicable to the Chinese National Standard (CNS) A4 (210 X 297 public love) (Please read the precautions on the back before filling this page). Line _ 1221809 A7 -------------- B7 _—__ V. Description of the invention (Z). Due to the small number of series, the conversion time has a great impact on the production capacity, as the stamps often have to be replaced several times per hour. Seen from a distance, the matrix is a kind of thin CD, which has the negative mode morphology of the CD surface structure. So as long as the printing plate is replaced, it can be put into the mold, for example, it can be taken out in half a minute. Road stomach ~ stage (to make the seal gap smaller or to distribute the material) and the second stage (to increase the seal force) are also used as the basis for contour control / adjustment. It is best to reduce the seal gap and Subsequent increases in pressure are implemented using ~ speed control (and preferably mutual communication). The end of the stamping stroke uses a pre-selectable path position of the stamping driver or the driven mold half. It is determined that the position corresponds to a pre-adjustable mold closing force and an optimum force in the final stage of printing. The pre-adjustment work on this machine or the related correction and adjustment work using the center column nut shifting It is selected so that during production (regardless of the imprinting stage or the subsequent post-pressing operation) all forces are received through the material of the injection-molded part 'and the contact of various metals in the mold half or tool half is avoided. According to the advantageous feature of the novel solution of the present invention, the trend of the back pressure action is controlled / adjusted by the program control / adjustment as the contour of the position or path. This trend is based on time, such as force versus time, or The trend of the driver's torque on the time basis, its control / adjustment method makes the obtained surface structure as best as possible, and the effective post-pressure during the cooling stage is reduced, so that the internal stress state and refractive index of the injection-molded part are not as small as possible. Affected negatively. For the back pressure trend, the control / adjustment takes time as 10 (please read the precautions on the back before filling this page)

This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 1221809 A7 ___ — _B7__ V. Description of the invention () (Please read the precautions on the back before filling this page) The basic person 'to cool the The time function is included in the calculation and therefore ensures the required internal structure in the manufactured component when cooled. Depending on the application, the contour control effect is achieved by the path of force, the torque of the drive motor, or a combination thereof. i-line · Before a production filling operation, especially after each tool change, make a basic adjustment of the injection molding machine, or monitor this during each injection cycle, and if necessary, cycle the cycle Correction. Corresponding to the maximum stamping force of the stamping process, the mold closing force and the most appropriate end position and starting position of the stamping driver when the tool is completely closed without the product in a conventional manner are determined. It is best to detect the peaks of the actual stamping force that occur during each production cycle and to change the corresponding length of the connection means (these changes are affected by time). It is best to measure several times by The average 値 of is determined by comparing with the nominal 力量 printing force, and is compensated by the correction of the adjustment of the column nut. The basic adjustment of the optimal end position and the long stroke are achieved by a post nut shifting effect (and preferably an electromechanical or electric motor type). The long stroke or "inspekthub" can be achieved by using a path detection function in a servo motor, wherein the position obtained during the closing force adjustment operation of the production position can be accurately moved in the next cycle Arrival 'and can be used as the basis for reproducible position or coordinates of control / adjustment of different axes of the injection molding machine. There is an insignificant feature: the clearance of the movable part (especially the part of the column nut driver) is effectively eliminated by using mechanical or pneumatic spring means by pressing in the direction of the stamping force. In the case of a hydraulic drive, the path is actually detected using the associated path detector. 11 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ~ " 1221809 A7 ____B7 __ V. Description of the invention (⑺) According to another very advantageous design 'The short stroke and the stamp driver It is achieved by a motor through a servo motor (which has a position recognition function in the servo motor). According to this servo motor, the path function of the electromechanical driver can be calculated. Short-stroke or stamped drives can have a knee (bent), rack, eccentric, or crank drive that is connected to the driven mold half. If the stamp driver is designed as an eccentric or crank driver, the eccentric or crank driver is designed so that the pressure stroke can be used near the dead point for maximum compression, and the path function is determined by the crank or eccentric position (Φ ), And can be obtained from the adjustment of the servo motor according to the detection of the position. Preferably, the driver carrying plate is firmly connected to the frame, and the driven mold half can be moved in relative to the driver carrying plate via the stamp driver, so that the acceleration and braking force from the mold movement It is borne by the rack, so it does not negatively affect accuracy, especially the accuracy of the starting position of the stamp. Preferably, the drive and control / adjustment device has a central post nut driver, one of which is provided with an "opposite mold half" opposite plate to be movable relative to the frame, and the basic adjustment of the machine can be via the post driver Reached. Here, the post nut driver is used as the final control element of the "basic closing force adjustment" and "closed force adjustment", and is provided with a force sensor (as an actual cymbal sensor to detect the closing force) And a regulating device. The stamp driver and the center post nut driver each have at least one independently controllable drive motor and should be designed as a servo motor. Its 12 paper sizes are applicable to China National Standard (CNS) A4 (210 X 297 mm) ( (Please read the precautions on the back before filling this page) t · · --line · 1221809 A7 _____B7 _ V. In the description of the invention (ll), the control / regulation device can use the data bus (Datenbus) and the required memory Body connection, you can choose project (Rezept) or program. [Brief Description of the Drawings] The present invention uses some embodiments to explain further details. The first diagram in the figure is an injection molding machine with a hydraulic actuator for manufacturing background technology such as CD; the second diagram is an enlarged scale schematic diagram of the hydraulic actuator corresponding to the short stroke and long stroke of the first diagram A path detection means having a stamping stage according to this novel solution; FIG. 3 is an embodiment of this novel solution, with a crank driver and a post nut driver with a motor driver; FIG. 4 a is the third Fig. 4 is a solution for eliminating the clearance of the column nut driver; Fig. 4b is an enlarged section of Fig. 4a, showing a support for a column. Fig. 5a is the position of the short-stroke eccentric or crank movement; Figure 5b is the theoretical force trend at the end of the closing movement when the seal force is generated; Figure 6 is a schematic cross-sectional view of a three-post machine with short and long stroke actuators; Figure 7a and Figure 7b shows the trend of nominal 値: Figure 7a shows the mold is closed 'Figure 7b shows the seal; Figures 8a to 8d show the different processes of mold movement. 13 This paper scale is applicable to China Standard (CNS) A4 Specification (2 1G X 297 public love) '(Please read the precautions on the back before filling this page)

1221809 A7 _B7_ V. Description of the invention (p) (please read the notes on the back before filling this page), it is in the form of a function of time. Fig. 8c shows the gap and Fig. 8d shows the screw movement. Fig. 9 is a diagram of a preferred design of an electrically driven injection molding machine for manufacturing precise parts. Fig. 10 is an arrow along Fig. 9 Top view of VI; FIG. 11 is a sectional view IX-K of FIG. 10. [Illustration of drawing number] (1) template (2) tie rod (3) piston head ⑷ cylinder (5) template (6) door guard ⑺ injection cylinder (8) frame (9) (9,) impression (10) machine (Injection molding machine) (11) Auxiliary cylinder (13) Piston chamber (14) Shoulder (15) Filling container (16) Post nut driver (17) Tight construction unit 14 This paper size applies to Chinese National Standard (CNS) A4 Specification (210 X 297 mm) 1221809 A7 _ B7__ V. Description of the invention (I7?) (20) Mold half (21) Mold half (22) Tool clamping plate (23) (Tool clamping plate) Long stroke Carrying plate (24) Driver carrying plate (25) Crank drive (26) Crank rod (27) Tool clamping plate (28) Crank carrying structure (30) Column (31) Arrow (32) Pin (33) Thread (34) Pinion (35) Cavity (38) Nut (39) Collar (40) Pinion (43) Electric motor (44) Line (45) Solid line (46) Drive pinion (47) Electric drive motor (48) Actuator 15 This paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling out this page) " -a · Line-1221809 A7 ___B7 V. Description of the invention ( A) (50) Pre-tensioned spring (50,) arrow (51) column shaft (52) seal (53) seal (54) mold closure (55) guide (56) column shaft (57) guard box (58) Toothed belt drive (59) Slider (61) Eccentric wheel (62) Slider (63) Arrow (64) Measuring system (65) Force sensor (66) Force sensor (70) Remove the robot (71) Robot hand wall (72) Suction holding head (73) CD (74) Electric motor (75) Remove unit (80) Pre-stressing device 16 (Please read the precautions on the back before filling this page) Order ·--Thread · This paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm) 1221809 A7 B7 V. Description of the invention (6) (89) Coupling (95) Crank driver [Explanation of the embodiment] According to the figure 1 The known solution 'makes a CD in the background in 3.7 seconds or less. This is also a kind of previous machine idea of the applicant. This is a fully hydraulic machine (10), which has very good properties in terms of machine stability. The machine (10) is characterized by a combination of a short stroke and a long stroke. The short stroke (C in Figure 2) is 70 to 80 mm. The closing force is about 600kN. The waiting stroke (0) is about 300 legs in total. A template (1) is firmly connected to a frame (8) or a machine tool. The pull rod (2) is screwed with the template (1). Wherein, a piston head (3) is located on the other end of the tie rod (2) in a cylinder (4). The template (5) shown in the figure is located above the axis X-X in a production position ', wherein the piston head (3) is continuously pressed against a shoulder (14) of the tie rod (2). There is a "close piston" (12) that passes through the entire short stroke range (C) forward and backward through two auxiliary cylinders (11) with less force. The corresponding oil pressure is applied to a piston chamber (13), only for applying this large closing force. To replace the stamps (9) (9 ') (MatdZe) in the mold, move the piston (3) from position A to position B' to create enough space for mold replacement. With the solution shown, a small amount of oil is required to apply the closing force. To replace the impression in the mold half (20) (21), control the three cylinders on the lever (2) and open the template (5) for a long stroke or maintenance stroke (D). Figure The lower left shows the short stroke with the mold open. The machine (1) in Figure 1 shows the opened guard door (6), and the shape joint (right side) and the shooting pot (7) (left side) can be seen. The raw materials are sent through the filling container (15). The injection molding machine (10) is heated by the injection cylinder (7), and is quantitatively injected into the mold under pressure 17 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read first Note on the back, please fill in this page again):: line · 1221809 A7 _____ Β7__ V. Description of the invention (mountain) In the cavity of the tool. The hydraulic assembly shown in Figure 2 is roughly the solution shown in Figure 丨. However, Figure 2 includes a path measurement system (64) of the novel solution. Figure 2 shows schematically: a hydraulically driven machine can also be controlled / adjusted via this path function. Figure 3 shows an example of this novel solution. On the left side of FIG. 3, the tool clamping plate or long-stroke carrying plate (23) on the nozzle side has a "for the main mold half (21), and the injection cylinder (7) can follow the arrow (31) to the opposite mold half Or move away from the half of the pair of standing molds. The long-stroke carrying plate (23) can be installed on the frame (8) in a firm or movable manner according to the chosen idea, and the drive carrying plate is Correspondingly, it must be set in a firm or movable manner. A better solution is shown on the right side of the figure, which is a compact construction unit (17) with a crank drive (25). The construction unit (17) consists of a The drive carrying plate (24) and a movable tool clamping plate (22) are formed. The tool clamping plate (22) can be moved on a guide and short against the machine tool (8), and has a "crank carrying Construction "(28). A crank drive (25)-one side is pivotally supported in the movable tool clamping plate (22) via a pin (32), and the other side is pivotally supported on the crank via a crank or an eccentric The carrying structure (28) enables the crank lever (26) to perform a crank movement corresponding to the eccentricity. The eccentricity (e) (see Figure 11) corresponds to half the stroke height. The driven mold half (20) is located on the opposite side of the movable tool clamping plate (22). Using these two mold halves (21) and (20), in the closed state, a cavity (35) is formed to place a desired disc-shaped impression (9) (9 ') (second picture). Generally, the CD is not cast directly into the cavity (35). In the cavity, one or two sides of each die (9) (9 ') is placed, the die has a space for accommodating the flat data carrier to be manufactured. The paper size is applicable to Chinese National Standard (CNS) A4 Specifications (210 X 297 mm) (Please read the precautions on the back before filling out this page)-= σ · • Line-1221809 A7 ___B7__ 5. Description of the Invention ([Ί) Cavity, as a negative mold. The locking and holding forces between the two plates are achieved by means of connection-in particular using three or possibly four posts (30). Each post (30) is locked on the nozzle-side tool clamping plate or long-stroke carrying plate (23) via a nut (38). A rotatable collar (39) is fixed on the driver carrying plate (24), and the collar is fitted by a pinion (Zahnkranz) (40). The fixed nut (38) is fitted to the thread (33) of each post via an internal thread. The rotary motion of the pinion (40) or the pinion (34) is transmitted to the nut (38) by the rotation of the post (30) and converted into a tool clamping plate on the nozzle side by the thread (33) of each post (30). Or a linear motion of the long-stroke carrying plate (23) [arrow (29)]. This movement determines the long stroke or waiting stroke, and when the stamp is quickly changed, it is for basic adjustment and cyclic correction. Department of need. Conversely, a short drive stroke is achieved via the crank drive (25) and the movable tool clamping plate (22). Figure 3 additionally shows, in a partially schematic way, the basic idea of a novel solution for making a flat data carrier such as a CD. The figure shows the position at the transition from the injection stage to the stamp stage. There is a cavity (Kav) in the center of the two mold halves, but it does not determine the shape of the data carrier until the end of the imprinting phase. During the development of this production process, various ideas have been developed. There is a fact that has not changed, that is, for the highest requirements, a certain amount of injection material is injected into the mold cavity, but the amount is only partially filled in the mold cavity. Before filling, the driven mold half (20) is moved to the "opposite mold half" (21) to form a predetermined "compression gap". The amount of injected material is represented by Ma. After the mold filling stage or the injection process is completed, the original stamping process is started. In the example in Figure 3, for this purpose, the driven mold half (20) is moved in the direction of the cavity (Kav). 19 The paper size applies the Chinese National Standard (CNS) A4 (210 X 297 mm). (Please read the notes on the back before filling this page) · # -line · 1221809 A7 —____ B7_______ V. Description of the invention (β) (Please read the notes on the back before filling this page) Move in one step and apply the maximum The printing force will reduce the mold cavity or mold cavity and compress the projected material. In the old method, the compression gap was reduced to zero. According to the new invention, it is recognized that the tool should not be moved to the position where it meets, but should have a remaining gap (S) for accurate final adjustment (even after the stamping operation is completed). The casting (Angufl) is indicated by a drawing number (19). The space in front of the screw is indicated by a drawing number (18). Fig. 3 shows a basic schematic diagram 'showing the core elements of the construction of a machine with a center post nut driver (16). Here, K represents the spring constant of the column, which also includes the constants of the remaining deformable members, as long as the deformation caused by the relevant load will affect the distance between the tool clamping plates (22) or (23) S is applicable. A drive carrying plate (24) is indicated by PLfix and is fixed in position. In this configuration, the drive carrying plate (24) is connected to the machine (8) or the frame in a firm or fixed manner. A crank drive (25) [which has a crank lever (26) and a crank disc (27) above the crank carrying structure (28)] is fastened on the drive carrying plate (24), so the corresponding back force ( Riickhaltekraft) or thrust force is guided directly to the machine tool (8). The crank drive (25) is designed for short strokes, and is used for imprinting force. Two other important functions can be seen in Figure 3: On the one hand, the movability of the tool clamping plates (22) and (23) is symbolically represented by rollers (36) or (37). The tool The clamping plate (22) is then moved by the driven mold half (20) for short strokes, especially for the entire injection molding cycle. The path X of the driven mold half (20) is a function [\ = 代 9) of the rotation angle φ of the crank (25). The direction of movement is indicated by an arrow (41), and the path detection means is indicated by an arrow (42). The second important function is the long stroke of the tool clamping plate (23) via the column nut driver (16). For this purpose, the tool clamping 20 This paper size applies to Chinese National Standard (CNS) A4 specifications (21 〇χ 297 mm) 1221809 A7 _____ Β7 __ 5. Description of the invention () The plate (23) is movable, and the one shown in the figure is supported on the roller (37). (Please read the precautions on the back before filling out this page.) The two types of movements, short stroke and long stroke, should be achieved by an electric motor driver. This idea is to connect the drive carrying plate (24) and the frame (8) in a fixed position. Conversely, the two mold halves (20) (21) are supported in a manner that can be relatively moved and can be moved to the frame (8). The compression function (K X F) is obtained at least initially from the column expansion (K) and the effective compression force (F). With this factor K, for example, the remaining deformation factors of different plates can be detected together. For the basic adjustment, the compression force can be obtained in various ways, for example, derived from the torque of the drive motor (47) in a one-shot approach. The disadvantage of this method is that friction factors, like acceleration forces, can confuse results. It is best to use an appropriate force sensor to detect from the area of the mold or use the expansion sensor of the column (30) to obtain an effective compression or closing force. The use of a sensor is advantageous here because it is a slow and nearly static mode property. Here, accurate detection is much easier than in highly dynamic procedures (such as the stamping process). The idea of program control (49) is that in the absence of compression, the control / regulation effect is achieved in principle based on a pure path function, because in this case (K = 0) for the path function, the factor of column expansion Is equal to zero. In a particularly advantageous manner, the electric motor driving action is caused by a servo motor, and the mechanical transmission action is caused by a crank drive (95) or an eccentric wheel (61). Here, the path function can be derived from the crank or eccentric position (φ), and the detection corresponding to this position is obtained by the adjustment action of the servo motor. Since the end of this movement is defined by the basic adjustment action, the actual properties in the cavity of the injection molding die can be clamped by the movable tool (22) 21 This paper size applies Chinese National Standard (CNS) A4 Specifications (210 X 297 mm) 1221809 A7 ___B7___ 5. The path function [f (9)] and compression function (KXF) of the invention description (/) are defined with the highest accuracy. The driving means should be controlled through a digital printing stage according to a predetermined or optimizable speed program. Not only does the crank or eccentric drive have—a huge advantage—until it reaches almost the dead point ', the motion function that converts a circular motion into a linear motion can be calculated geometrically with the highest accuracy, without the need for additional sensors. It can be derived from the position of the rotor in the servo motor. Therefore, in the case of a motor drive, the root path function can be controlled / adjusted with high accuracy. Factors for effective compression (including temperature parameters) are taken into account during control and adjustment. In this way, the entire printing process can be accurately controlled according to the target position according to the path function of the motor driver through a preset program. The beginning and end of the program process have been adjusted in the basic adjustment and the relevant adjustment of the machine [force sensor (65)] settings. Therefore, no additional sensors are required for production operations during the stamping cycle. Therefore, the solution of the present invention directly considers some of the most important parameters (they have an effect on distance properties) in the relevant project or program part. With regard to compression, it is mainly all possible deformations, including the expansion of the column. The path function may also include specific driving means. Figure 4a shows another very advantageous design concept for improving the accuracy of the regulation effect. For this purpose, the mechanical clearances of all relevantly acting parts that can be moved mechanically are eliminated by means of a pretensioned spring (50). The important point here is that the direction in which the pretensioning spring (50) acts is the same as the direction in which the force of the stamp is generated [arrow (50 ')]. Figure 4b shows a sectional view of the bearing position passing through a cylindrical shaft (51). A seal (52) or (53) is provided on each of the two outer sides. This can make the internal 22 -------------------- order --------- line · (Please read the precautions on the back before filling in this Page) ΐThe paper size is in accordance with the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 1221809 A7 __B7_______ 5. Description of the invention (4) An oil or grease lubricating means can be put in, so that the friction of the supporting effect is small Therefore, it can also meet the long life and the high requirements of the manufacturing of the dust room. In Figure 5a, the solid line (45) indicates the theoretical force trend at the end of the closing motion. As a calculation example, line (44) shows the effective force trend on the path on the second mold half. It is based on the Hooke's law characteristic line of column and plate deformation, which is closed at a CD with a 50 mm open plate path. The situation of the unit 〇 The best adjustment purpose for the crank drive is located within about 180 °, as shown in Figure 5b. Figure 5b shows three different positions: when the rotation angle φ1, the mold is opened; the rotation angle φ2 sets the stamping gap; φ3 indicates the position at the maximum stamping force, and at the maximum stamping force, The crank can be located at the dead point and should be near the dead point. F represents (Fig. 4a) the amount of force acting on the deformable part of the machine (especially on the column (30)). As a result of the relative movement of the two mold halves (20), the distance S is directly changed, each depending on the position of the two tool clamping plates (22) (23). The tool clamping plate (23) moves according to the function K &F; the tool clamping plate (22) moves according to the function X = f (cp). The gap amount S is obtained by the following function:

S = X + KF = f ((p) + KF) For the regulating effect of the closing force, refer to German patent DE 36 31 164 for all its internals. This solution by the applicant shows a very advantageous method, which can be used for measurement And adjust the closing force of a plastic injection molding machine (which has a centrally adjustable knee lever mechanism, which is used to generate the closing force). The solution is at a part of the operating time of the machine 23 paper size Applicable to China National Standard (CNS) A4 specification (210 X 297 mm) πPlease read the note on the back and fill in this page) Order ·-Thread '1221809 A7 __B7_ ____ V. Description of the invention (〆) (please first Read the notes on the back and fill in this page again)-Line · Measure the closing force required for each working cycle of an operating cycle predetermined by the number of cycles, and calculate an average value from these measurements. The adjustment is made only when this average in a closing force adjustment range is outside a margin (allowable error) range (the nominal value of the range containing the closing force is preset), where each In this work cycle after the "change step", a measurement is made, and this operation cycle can only be started when the measurement position after the "closed force change step" is within the margin. Then the average 値) is determined. In addition, this method can be used in an advantageous manner during the entire operating time or only during the migration phase or only during the subsequent normal working phase, at which the thermal equilibrium has been reached in the machine. Here, a practice is shown to be advantageous, that is, the number of work cycles per operation cycle of the selected transition phase is smaller than the number of work cycles of the operation cycle of the normal work phase. In this way, during the transition phase, part of the deviation of the closing force from the nominal 値 (these deviations are much greater than the nominal 値 and follow in time faster). • Adjustment error: AF = Temperature effect On the one hand, accidental changes or temperature effects can be excluded, and this correction can be regarded as a central adjustment during the inspection step. Fig. 6 schematically shows a center post nut driver (16) for a long stroke (it has an electric motor (43) with a driving pinion (46)) and a driver for a short stroke (via a drive motor (47) A coupler (48) and the eccentric wheel (61) are driven. The injection unit with the plasticizing cylinder is matched with a tool clamping plate (23) on the nozzle side, and two electric motor drivers are matched with another fixed carrying plate (24). "Maintenance itinerary" refers to the use of a conventional "die 24 paper size applicable to the Chinese National Standard (CNS) A4 specification (21〇χ 297 mm) 1221809 ... A7 ____ B7 _ ^ _ V. Description of the invention (V,)- ---------------- (Please read the precautions on the back before filling out this page) Constructing the height adjustment means "using the pinion (40) and gear (34) in the column nut (38) Move up. Alternatively, the column (30) can be rotated with a toothed belt. The column (30) is supported in the template with roller bearings, and the bearing and the "shift thread" are lubricated to obtain a relatively high shift speed, and when the stamps (9) (9 ') are replaced. Modification time can be less than 30 seconds. Therefore, for this drive, a motor with a shaft that can be accurately positioned (and a servo motor with a small clearance) should be reused. There is a coupling (89) between the crank drive (25) and the electric drive motor (47), and it is preferably a Stirnrad type coupling. C represents an intelligent means with memory control / regulation (Intelligenz). It presets or sends all necessary program procedures or items to the relevant motor control / adjustment means. In this smart box C, (R1) (R2) (R3), any computing performance can be installed locally, and can be directly used for corresponding coordination (Koordination). Based on this, you can set up “Control Connections” (Stl) (St2) (St3) and ensure all control and adjustment processes. Lines Fig. 7a and Fig. 7b show schematically the possibility of a complete speed control / adjustment, where Fig. 7a shows the closing of the mould and Fig. 7b shows the stamping operation. The word "control / adjustment" is equivalent to the meaning of "control" in English, and the word control includes two meanings of control / regulation. In two stages, a curve trend profile of speed versus path is used. SP0, SP1, SP2, etc. are different preset seal gaps. There is still a gap in the imprinted target (end point), such as 0.02 legs. Figures 8a to 8d show the trend graphs of time. The qualitative (qualitativ) display of the most important parameters of time is shown in Figure 25. This paper scale applies Chinese National Standard (CNS) A4 specifications (210 ^ 7 ^^ --- 1221809 A7 _ B7__ 5. Explanation of the invention (outside)

8a: mold position 8b: impression force 8c: mold gap S 8d: screw path S Refer to Figures 9 to 11 below, they show the side view or top view and cross-sectional view of the mold closing member (54). The left side of the figure shows the driver carrying board (24). On the right side of the board, there is a construction group (51) for working stroke or short stroke. It is directly connected to it by screws (66). A nozzle-side tool clamping plate (23) is provided in the right half of the figure. The nozzle-side tool clamping plate (23) is held by four posts (30) relative to the drive carrying plate (24) and guided underneath on a guide (55). Each column (30) is supported in a tool clamping plate (23) on the nozzle side through a column nut (38), so that the rotational movement of the column shaft (56) causes the mold half (21) to move longitudinally. In order to protect the column shaft (56) with threads (the thread is of high accuracy and is well lubricated so that the friction effect is as small as possible), the column shaft (56) is protected by a protection Box (57) surrounds. The rotary motion of the column shaft (56) is generated by the center via a toothed belt drive (58) and a drive motor or electric motor (43). The two sides of the tool clamping plate (23) on the nozzle side are guided by the slider (59) in a nearly gap-free manner, and the axis (60) parallel to the column axis (56) makes purely linear movement; The movable tool clamping plate (22) is also supported by the slider (62) for accurate parallel guidance. The eccentric wheel (61) is supported freely, so the crank motion of the crank drive (25) can be converted into a linear motion without any hindrance. By using the relevant rotating pulse wave on the electric motor (43) to move the tool clamping plate (23) on the nozzle side, the mold can be widened, for example, to a 300 mm free opening. This related campaign utilizes 26 paper sizes that comply with Chinese National Standard (CNS) A4 specifications (210 X 297 public love) (Please read the precautions on the back before filling this page)

1221809 A7 ____B7 ____ 5. Description of the invention (/) Arrow (63) indicates. All temperature-related tolerances are corrected using the regulating effect of the closing force. The required correction function is automatically detected by the control means (change in closing force), and the position is corrected by the electric motor (43). The original short-stroke KH was achieved by the movement of the eccentric wheel through the forced horizontal linear movement of the crank drive (25) and the movable tool clamping plate (22). At the time of production, another central function was to remove the CD. Fig. 10 shows a "remove robot" (70) with a robot arm (71), a suction holding head (72), and a CD (73) held thereon. The "remove robot" (70) has its own electric motor (74), and it is firmly connected to the machine tool as a "remove unit" (75). It is important here that the movement flow between the robot arm (71) and the short-stroke movement (KH) of opening the mold is fully coordinated (coordinated) (Koordinierung). This cooperation is achieved in the range of a few thousandths of a second (msec), and it is indeed achieved using appropriate sensors. In any state, the moving parts will not collide. Figure .11 shows a section ΥΠ-VH in Figure 10. As mentioned above, the center column nut driver (16) should be used as the final control element of the closing force adjustment means, together with a force sensor (66) [as an actual radon generator to detect the closing force] and a Use the adjustment device together. Here, the path detection function of the movement is achieved in the servo motor itself. This reproducible position is controlled / adjusted or coordinated according to different axes. In order to ensure the required accuracy according to the adjustment of the waiting stroke, a prestressing device (80) in each column (30) and the bearing clearance and thread clearance required in the mechanical structure are eliminated. . This is the pressing force required to eliminate the gap. 27 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) ----------------- (Please read the back first Please pay attention to this page and fill in this page) · Line · 1221809 A7 ___B7___ 5. The description of the invention (· Λ) can be made by spring or air pressure, and one of the drive carrying plate (24) and long travel carrying plate (23) is used. The prestressing of the strands eliminates the gaps in the wing portions joined by this force. For example, the eccentric radius of the eccentric wheel (61) is 25 m, which makes the total short stroke 50 mm. The ejection device (81) will not be described in detail. For example, it can be designed to operate with air pressure and is comparable to the solution of background technology. --- (Please read the precautions on the back before filling out this page) -Line · 28 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)

Claims (1)

! 2218〇9 C8 ------ ^ ^, patent application scope (please read the precautions on the back before filling this page) 1. A method for controlling / adjusting the imprinting process of precise parts manufacturing, especially Is a manufacturer of flattened optical data carriers, which utilizes ~ injection molding machines, which have two mold halves: a driven mold half (20) and an opposite mold half (21), of which The driven mold half (20) is moved by a motorized or hydraulic stamp driver, and the driven: the force engagement between the driven mold half (20) and the opposite mold half (21) &; At the time of basic adjustment and in the entire injection cycle, it is caused by the connection means of the injection molding machine, which is characterized by: The control / adjustment effect of the stamping process is programmed according to the path function of the driven mold half (20) Control / regulation. 2. The method according to item 1 of the scope of patent application, wherein: the path function is similarly treated as the seal gap becomes smaller in the first stage or the material distribution and as the seal force increases in the second stage. Contour control / adjustment. Line 3. The method according to item 1 or 2 of the scope of patent application, wherein: the reduction of the seal gap and the increase of the seal force are adjusted according to the speed. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 4. If the method of applying for the scope of patents No. 1 or No. 2, where: the stage where the seal gap becomes smaller and the stage where the force subsequently increases is a speed control action One place. 5. The method according to item 1 or 2 of the scope of patent application, wherein: the end of the stamping action is determined using a pre-selectable path position of the stamping driver or the driven mold half (20), the The position is based on a pre-adjustable closing force and an optimum one at the end of the seal. 1 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 1221809 A8 B8 C8 D8 / ,,, The power of patent coverage. 6 · If the method of applying for item 5 of the scope of patents, which ... (Please read the precautions on the back before filling out this page) The pre-adjustment of the closing force and the material quantification are selected so that the pressing operation is performed during the stamping stage and afterwards At this time, all forces are borne by the injection molding part material, and contact of any metal part of the mold or tool half (20) (21) can be avoided. 7. The method according to item 1 or 2 of the scope of patent application, wherein: the trend of the back pressure is controlled by the program to adjust the position or path to the time-based contour control / adjustment effect, or the force to the time-based contour control / The adjustment action, or the torque control of the driver, controls the time-based contour / adjustment action in such a way that the surface structure obtained by the action is as good as possible ', and during the cooling stage, the post pressure of the action is reduced, so that As far as possible, the stress state and the refractive index are not adversely affected. -Line 8: The method according to item 1 or 2 of the scope of patent application, wherein: The basic adjustment function of the machine corresponds to the maximum stamping force in the stamping process, which is set to the basic closing force in a conventional manner and when there is no product. And when the tool is completely closed, the optimal end position and starting position of the stamp drive. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 9. If the method of applying for the scope of patents No. 1 or No. 2, where: In each production cycle, the peak of the actual stamping force that occurred is detected, and In particular, the corresponding longitudinal change of the connection means (change caused by heat) is determined by comparing the average 値 of several measurements with the nominal stamping force, and compensated by the correction of the adjustment of the column nut. 2 This paper size is in accordance with Chinese National Standard (CNS) A4 (210 x 297 mm) 1221809 ____ §__ VI. Scope of patent application 10 · If the method of applying for the scope of patent application item 1 or 2, in which: the stamp driver The motor is driven by a servo motor, and the position is detected. Based on this, the path function of the motor driver is calculated.如 · The method of item 1 or 2 of the scope of patent application, wherein: the basic adjustment effect is achieved by an electromechanical method or an electric motor method through a column nut transfer method to adjust to the optimal final position. i2. If the method of the first or second scope of the patent application, wherein: the path detection effect of the long stroke and the short stroke should be achieved by a path detection effect of a servo motor, in which, when the closing force is adjusted In the next cycle, the obtained production position can be accurately moved in accordance with an inspection stroke, and can be used as a basis for the reproducible position of the control / adjustment or coordination of the different axes of the injection molding machine. 13. · A driving and control / regulating device (54) for a mold closing side (54) of an injection molding machine driven by a motor and / or a hydraulic system, the injection molding machine having a driven mold half Part (20) and an opposing mold half (21), this device has a controllable / adjustable imprinting process to make precise parts, particularly flat data carriers, wherein the driven mold half (20) is opposed to The power joint between the mold halves (21) can be made by the connection means of the injection molding machine, which is characterized by: a stamp driver and a program control means (49), by which the driven mold halves can be based on (20) The path function adjusts / controls the stamping process. 14. As the driving and control / adjustment device of the 13th scope of the patent application, among which: 3 This paper size is applicable to China National Standard (CNS) A4 (210 X 297) (Mm) (Please read the precautions on the back before filling this page) Order: i-line · Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 1221809 A8 B8 C8 D8 _ VI. Scope of patent application The stamp driver has a knee lever, A rack, Eccentric wheel, or a crank drive (25), the drive (25) is connected to the driven mold half (20) (please read the precautions on the back before filling this page) 〇 15. If the scope of patent application is 14th The driving and controlling / adjusting device of the item, wherein: a driver carrying plate (24) is firmly connected with the frame or the machine tool (8), and the driven mold half (20) can be opposed to the via the stamp driver The drive carrying plate (24) moves so that the forces caused by the acceleration and braking of the die movement will not adversely affect the accuracy of the initial position of the stamp. 16. The driving and control / adjustment device according to item 13 of the patent application, wherein: the stamp drive is designed as an eccentric wheel or crank drive (25), wherein the eccentric wheel or crank drive (25) is designed such that The printing stroke can be used for maximum compression near the dead point. -Line. 17. If the driving and control / regulating device of the scope of patent application No. 13 is, among them: printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economics, the stamped driver is designed as a crank or eccentric, and the path function is controlled by the crank Or the position of the eccentric wheel (4) is derived, and can be obtained according to the position detection action of the adjustment action from the servo motor. 18. The driving and controlling / adjusting device according to item 14 of the scope of patent application, wherein: the device has a post nut driver (16), and an opposite plate having an opposite mold half (21) is supported so as to be opposite to the frame ( 8) Movement, wherein the basic adjustment of the machine can be achieved via the column nut driver (16). 4 This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) 1221809 A8 B8 C8 D8 'Applicable patent scope 19 · If the patent application scope item 18 is the driving and control / adjustment device γ, of which: The center column nut driver (16) is designed as the final control element of the closing force basic adjustment function and the closing force adjustment function, and is provided with a force sensor (as an actual radon generator for detecting the closing) Power) and a regulating device. 20. If the driving and control / adjustment device of item 13 of the scope of the patent application, wherein: the clearance with respect to the movable part (especially the movable part of the column nut driver (16)) should be mechanical or hydraulic The spring-type means is effectively eliminated by the compressive action in the direction of the seal force. 21 · If the driving and control / adjustment device of the scope of application for item 14 of the patent, wherein: each of the devices has at least one independently controllable drive motor for the stamp driver and the column nut driver (16), and should be designed In the form of an electric servo motor, the control / regulation device is provided with the required memory to store selectable items or programs. --- (Please read the precautions on the back before filling out this page) · Line. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)