JP6537209B2 - Control method of injection molding machine and injection molding machine - Google Patents

Description

The present invention relates to an injection molding machine control method and an injection molding machine.

Conventionally, the intermediate mold is disposed movably in the mold opening and closing direction between the movable board to which the movable mold is attached and the fixed board to which the fixed mold is attached. The fixed mold and the intermediate mold, and the movable mold The injection molding machine disclosed in Patent Document 1 is known as an injection molding machine in which the intermediate mold is closed by mold opening / closing means to form respective cavities, and the mold clamping is performed by the mold clamping means. In the above-mentioned injection molding machine, the movable platen and the movable mold are moved by the movable platen and the mold opening and closing means for the movable mold, and the intermediate mold is moved by the mold opening and closing mechanism for the intermediate mold. In Patent Document 1, the moving distance of the moving plate is twice that of the rotating plate at the time of mold opening, but the timing of mold closing completion of one of the first mold K1 and the other of the second mold K2 is matched. be able to.

In the conventional injection molding machine of this type, it is general that the mold opening amount of one mold K1 and the other mold K2 are the same. The moving speed of the moving board relative to the fixed board at the time of mold opening and closing was twice the moving speed of the rotating board relative to the fixed board.

However, even in this type of injection molding machine, as described in Patent Document 2, there is also disclosed one in which the mold opening amount is different between one mold and the other mold. In Patent Document 2, at the time of mold opening, the mixing head can enter the space between one mold half by the movable first robot arm. Therefore, the mold opening amount between one mold is larger.

JP-A-2-171221 (claim, page 8, upper left column and upper right column, FIG. 1) JP 2009-534235 gazette (representative figure, 0028, 0033)

However, in Patent Document 1 and Patent Document 2, the intermediate mold is disposed movably in the mold opening and closing direction between the movable board to which the movable mold is attached and the fixed board to which the fixed mold is attached. In the injection molding machine in which the intermediate mold and the movable mold and the intermediate mold are respectively closed by the mold opening and closing means to form a cavity and the mold clamping is performed by the mold clamping means, the respective movable mold and the intermediate metal There is no mention of how to enter settings for molding with the mold and settings for molding with the fixed and intermediate molds. Therefore, when the setting value is input for each mold, the input operation is complicated.

In particular, when the mold opening amount is made different between one mold and the other as in Patent Document 2 described above, the moving speed of the moving plate relative to the fixed platen at the time of mold closing is as in Patent Document 1 If the moving speed of the rotating disk with respect to the fixed disk is doubled, there is a problem that the dies may collide with each other. For example, in the one provided with the moving mechanism of the rotating disc between the rotating disc and the moving disc, the setting of the mold opening amount between the rotating disc and the moving disc is maximum, and the setting of the mold opening amount between the fixed disc and the rotating disc Is mounted on the rotary disk when the mold closing control between the fixed disk and the rotary disk and the setting of the mold closed velocity between the rotary disk and the movable disk simultaneously perform mold closing control at the same speed. It is also conceivable that the mold collides with the mold attached to the fixed plate.

Therefore, even when the mold opening amount is different between one mold and the other mold as in Patent Document 2, the mold opening speed and the mold closing speed of both molds are set at the time of setting. Each was set individually. Therefore, the setting operation of the mold opening speed and the mold closing speed is similarly complicated.

In the present invention, in view of the above problems, the intermediate mold is disposed movably in the mold opening and closing direction between the movable board to which the movable mold is attached and the fixed board to which the fixed mold is attached. In an injection molding machine in which the intermediate mold and the movable mold and the intermediate mold are respectively closed by mold opening and closing means to form a cavity and the mold clamping is performed by the mold clamping means, the movable mold and the intermediate mold are Provided is a control method and an injection molding machine of an injection molding machine that can simplify setting input when setting the setting values for the used molding and the setting values for molding using the fixed mold and the intermediate mold. The purpose is to

Further, in the present invention, in view of the above problems, the intermediate mold is disposed movably in the mold opening / closing direction between the movable board to which the movable mold is attached and the fixed board to which the fixed mold is attached. In the injection molding machine in which the intermediate mold and the movable mold and the intermediate mold are closed by the mold opening / closing means to form respective cavities and the mold clamping is performed by the mold clamping means, one mold and the other mold And a control method of the injection molding machine capable of simplifying the setting of the mold opening speed even when setting the mold opening amount to be different from that of the mold, and avoiding the problem such as the collision of the molds. Intended to be provided.

In the injection molding control method according to the first aspect of the present invention, the intermediate mold is movable and rotatable in the mold opening and closing direction between the movable board to which the movable mold is attached and the fixed board to which the fixed mold is attached. Of the injection molding machine in which the fixed mold and the intermediate mold, and the movable mold and the intermediate mold are respectively closed by the mold opening and closing means to form respective cavities and the mold clamping is performed by the mold clamping means. In the control method, set values when the movable mold and the intermediate mold are opened and set when the fixed mold and the intermediate mold are opened, or set when the movable mold and the intermediate mold are closed and At least one of setting values at the time of mold closing of the fixed mold and the intermediate mold can be automatically set by one setting, and at the time of mold opening operation or mold closing operation of the respective mold opening / closing means by the above setting values . that value is calculated is controlled And butterflies.

In the injection molding control method according to a second aspect of the present invention, in the first aspect, the setting value of the mold opening speed at the time of mold opening of the movable mold and the intermediate mold and the mold opening of the fixed mold and the intermediate mold. At least one of the setting value of mold opening speed at the time or the setting value of mold closing speed at mold closing of movable mold and intermediate mold and the setting value of mold closing speed at mold closing of fixed mold and intermediate mold Can be set automatically by one setting, and the mold opening speed at mold opening of each mold opening / closing means or the mold closing speed at mold closing of each mold opening / closing means is calculated and controlled by the set value It is characterized by

According to a third aspect of the present invention, there is provided a control method of an injection molding machine according to the third aspect of the present invention, wherein the intermediate mold is movable in the mold opening and closing direction between the movable platen on which the movable mold is mounted and the stationary platen An injection molding machine in which the fixed mold and the intermediate mold, and the movable mold and the intermediate mold are respectively closed by the mold opening / closing means to form respective cavities and the mold clamping is performed by the mold clamping means. In the control method of the invention, the mold opening amount of the movable mold and the intermediate mold and the mold opening amounts of the fixed mold and the intermediate mold can be set separately, and the mold at the time of mold opening of the movable mold and the intermediate mold. Opening speed and mold opening speed at the time of mold opening of fixed mold and intermediate mold, or mold closing speed at the time of mold closing of movable mold and intermediate mold and mold closing at mold closing of fixed mold and intermediate mold At least one of the speeds is automatically set by one setting. Are possible, the mold opening operation time or the value at the time of die closing operation of each of the mold opening and closing means by the setting value is characterized in that the calculated controlled.

A control method of an injection molding machine according to a fourth aspect of the present invention is the method according to the second or third aspect, wherein the mold opening speed at the time of high speed mold opening of the movable mold and the intermediate mold and the fixed mold and the intermediate mold Mold opening speed at high-speed mold opening, or mold closing speed at high-speed mold closing of movable mold and intermediate mold and / or mold closing speed at high-speed mold opening and closing of fixed mold and intermediate mold are the same It is characterized in that movement control is performed by speed.

A control method of an injection molding machine according to a fifth aspect of the present invention is, in the third aspect , the mold opening time of the movable mold and the intermediate mold and the mold opening time of the fixed mold and the intermediate mold, or the movable mold At least one of the mold closing time of the mold and the middle mold and the mold closing time of the fixed mold and the middle mold differs in the mold opening amount of the movable mold and the middle mold and the mold opening amount of the fixed mold and the middle mold. Even in this case, movement control is performed at the same time.

In the injection molding machine according to the sixth aspect of the present invention, the intermediate mold is movable and rotatable in the mold opening and closing direction between the movable board to which the movable mold is attached and the fixed board to which the fixed mold is attached. In the injection molding machine, provided, the fixed mold and the intermediate mold, the movable mold and the intermediate mold are closed by the mold opening / closing means to form respective cavities, and the mold clamping is performed by the mold clamping means,
Set values at mold opening of movable mold and intermediate mold and set values at mold open of fixed mold and intermediate mold, or set values at mold closing of movable mold and intermediate mold, fixed mold and At least one of the setting values at the mold closing time of the intermediate mold can be automatically set by one setting, and the value at the time of mold opening operation or mold closing operation of each mold opening / closing means is calculated by the setting value. It is characterized in that it is controlled.

According to a seventh aspect of the present invention, in the injection molding machine according to the sixth aspect , the setting value of the mold opening speed at the time of mold opening of the movable mold and the intermediate mold and the mold at the time of mold opening of the fixed mold and the intermediate mold At least one of the mold opening speed setting value or the mold closing speed setting value of the movable mold and the intermediate mold at mold closing and the mold closing speed of the fixed mold and the intermediate mold at the mold closing is at least one. It can be set automatically by one setting, and the mold opening speed at mold opening of each mold opening / closing means or the mold closing speed at mold closing of each mold opening / closing means can be calculated and controlled by the set value. It features.

In the injection molding machine according to claim 8 of the present invention, the intermediate mold is movable and rotatable in the mold opening and closing direction between the movable board to which the movable mold is attached and the fixed board to which the fixed mold is attached. The injection molding machine is disposed, and the fixed mold and the intermediate mold, the movable mold and the intermediate mold are closed by the mold opening / closing means to form respective cavities, and the mold clamping is performed by the mold clamping means. Set values at mold opening of mold and intermediate mold and set values at mold open of fixed mold and intermediate mold, or set values at mold closing of movable mold and intermediate mold and fixed mold and intermediate mold At least one of the setting values at the time of mold closing of the mold can be set by one setting, and the same setting value is automatically displayed on the setting display screen by the setting . At mold opening operation or at mold closing operation Along with the value is controllable, characterized in that different setting can also be input to the setting display screen.

According to the control method of the injection molding machine of the present invention, the intermediate mold is disposed movably and rotatably in the mold opening and closing direction between the movable board to which the movable mold is attached and the fixed board to which the fixed mold is attached. The control method of the injection molding machine in which the fixed mold and the intermediate mold, and the movable mold and the intermediate mold are respectively closed by the mold opening and closing means to form a cavity, and the mold clamping is performed by the mold clamping means. Set values at mold opening of mold and intermediate mold and set values at mold open of fixed mold and intermediate mold, or set values at mold closing of movable mold and intermediate mold and fixed mold and intermediate mold At least one of setting values at mold closing time can be automatically set by one setting, and a value at the time of mold opening operation or mold closing operation of each mold opening / closing means is calculated by the above setting value and controlled. To simplify the configuration. It is possible. Further, according to the control method of the injection molding machine of the present invention, the intermediate mold is movably and rotatably disposed in the mold opening and closing direction between the movable board to which the movable mold is attached and the fixed board to which the fixed mold is attached. A control method of an injection molding machine in which a fixed mold and an intermediate mold, and a movable mold and an intermediate mold are respectively closed by mold opening and closing means to form a cavity, and the mold clamping is performed by the mold clamping means; The mold opening amount of the movable mold and the intermediate mold and the mold opening amount of the fixed mold and the intermediate mold can be set separately, and the mold opening speed at the mold opening of the movable mold and the intermediate mold and the fixed metal At least one of mold opening speed at mold opening of mold and intermediate mold or mold closing speed at mold closing of movable mold and intermediate mold and mold closing speed at mold closing of fixed mold and intermediate mold It can be set automatically by one setting. Because the mold opening operation time or the value at the time of die closing operation of each of the mold opening and closing means by the setting value is calculated is controlled, it is possible to simplify the setting of the mold opening speed or mold closing speed.

It is a top view of the injection molding machine of this embodiment of the present invention, and is a figure showing the state where the mold of one mold and the mold of the other were opened by different amount of mold opening. It is a top view of the injection molding machine of this embodiment of this invention, and is a figure which shows the state in which one metal mold | die and the other metal mold | type were closed. It is a figure which shows the setting screen of the injection molding machine of embodiment of this invention. It is a figure showing relative mold closing speed at the time of mold closing of the injection molding machine of an embodiment of the present invention. It is a figure which shows the absolute type | mold closing speed at the time of type | mold closing of the injection molding machine of embodiment of this invention. It is the schematic which shows the control method of the injection molding machine of another embodiment of this invention. FIG. 5 is a schematic view of an injection molding machine according to another embodiment of the present invention. FIG. 7 is a schematic view showing an injection molding machine of still another embodiment of the present invention. It is a figure which shows the setting screen of the injection molding machine of the 2nd Embodiment of this invention. It is the schematic which shows the injection molding method which shape | molds separately the same molded article, respectively using the injection mold machine of this invention using the same metal mold | die.

An injection molding machine 11 according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. The injection molding machine 11 is an injection molding machine for a composite molded product using two types of materials. A mold clamping device 13 is disposed on the upper surface of the bed 12. In the mold clamping device 13, intermediate molds 18, 18 are disposed movably in the mold opening and closing direction between the movable platen 15 to which the movable mold 14 is attached and the stationary platen 17 to which the fixed mold 16 is attached. The fixed mold 16 and the intermediate mold 18 as well as the movable mold 14 and the intermediate mold 18 are closed by mold opening and closing means 19 and 20 respectively to form cavities C1 and C2, respectively. Clamping takes place.

The clamping cylinders 22 of the clamping means 21 are provided in the vicinity of the four corners of the stationary platen 17, and the rods of the clamping cylinders 22 are tie bars 23. The tie bar 23 is also inserted into a movable plate 15 movable in the mold opening and closing direction with respect to the fixed platen 17 and an intermediate member 25 between the fixed platen 17 and the movable platen 15 and movable in the mold opening and closing direction. The mold clamping cylinder 22 is hydraulically operated, and hydraulic fluid is supplied to the mold clamping side oil chamber 29 a or the mold opening side oil chamber 29 b of the mold clamping cylinder 22 from the pump 27 provided in connection with the tank 26 via the switching valve 28. It is supposed to be supplied. The clamping means is not limited to the clamping cylinder 22 as shown in FIG. Further, a movable mold 14 is attached to the movable plate 15, and a half nut 34 is provided in the vicinity of the insertion portion of the tie bar 23 on the outer surface of the movable plate 15. The half nut 34 is movable forward and backward by drive means (not shown), and is locked to a locking portion 35 provided on the tie bar 23. A rotary disk 30 which is a part of the rotary member 30 is rotatably mounted on the intermediate member 25, and intermediate molds 18 and 18 are mounted on both surfaces of the rotary disk 30.

Further, the injection molding machine 11 includes a mold opening / closing means 19 for moving the movable platen 15 (including the movable mold 14) in the mold opening / closing direction, and an intermediate member 25 (including the rotary platen 30 and the intermediate molds 18 and 18). An intermediate member mold opening / closing means 20 is provided for moving the mold in the mold opening / closing direction. The mold opening and closing means 19 of the movable platen (mold opening and closing means of the movable mold) comprises a drive shaft of a servomotor 37 (M1) fixed on the bed 12 and a ball screw shaft 38 pivotally supported on the bed 12 It is linked via 39 mag. Further, the servomotor 37 is provided with a rotary encoder 40 for detecting a rotation angle. A ball screw nut 41 is fixed to a bracket on the side surface of the movable platen 15, and a ball screw shaft 38 is inserted in the ball screw nut 41. Further, the servomotor 37 is connected to a control device 33 which controls the entire injection molding machine 11 via a servo amplifier 42. Although FIG. 1 and FIG. 2 show only the mold opening / closing means 19 of one movable disc, generally, two to four movable disc mold opening / closing parts 19 are provided.

As for the mold opening and closing means 20 for the intermediate member (mold opening and closing means for the intermediate mold) for opening and closing between the movable platen 15 and the intermediate member 25, the servomotor 43 (M 2) is fixed to the side bracket of the movable platen 15 A ball screw nut 44 is fixed to the intermediate member 25, and a ball screw shaft 45 inserted into the ball screw nut 44 is connected to a drive shaft of the servomotor 43. The servomotor 43 is also provided with a rotary encoder 47 in the same manner as the servomotor 37. The servomotor 43 is connected to a control device 33 that controls the entire injection molding machine 11 via a servo amplifier 48. Although only one intermediate member mold opening / closing means 20 is shown in FIGS. 1 and 2, generally, two to four intermediate member mold opening / closing means 20 are provided. The method of connecting the servomotor 37 and the ball screw shaft 38 and the method of connecting the servomotor 43 and the ball screw shaft 45 is not limited to the above. Further, the mold opening / closing means 19 of the movable platen and the mold opening / closing means 20 of the intermediate member are not limited to the above-described mechanism, and one using a different electric drive mechanism or one using a hydraulic cylinder may be used. Further, the position sensor used to control the mold opening / closing means 19 of the movable platen and the mold opening / closing means 20 of the intermediate member may be a linear sensor or the like.

A first injection device 49 is provided on the bed 12 outside the fixed platen 17, and a second injection device 50 that moves together with the movable platen 15 is provided on the outside of the movable platen 15. The arrangement of the injection devices 49 and 50 is not limited to this. In the present embodiment, an ejector device (not shown) is attached to the intermediate molds 18 and 18. Then, when the fixed mold 16 and the intermediate mold 18 are opened, the take-out machine 46 intrudes between them, and the composite molded article P whose molding is finished can be taken out. However, the mold to which the ejector device is attached may also be the fixed mold 16 or the movable mold 14.

A control panel 31 is provided on the bed 12 on the operation side (the lower side in FIG. 1). The operation panel 31 is provided with a touch panel type setting display screen, and a large number of setting display screens stored in the control device 33 such as an injection setting display screen, a mold clamping setting display screen, a mold open / close setting display screen 36 are selectively selected. It can be displayed on. As shown in FIG. 3, the mold opening / closing setting display screen 36 includes a mold opening setting display unit 51, a mold closing control setting display unit 52, and a mold opening control setting display unit 53. Actually, in most cases, the mold opening / closing setting display screen 36 can also set or display other elements such as the maximum mold opening amount (mold opening / closing stroke), but here only the part related to the invention Show what is displayed. Further, the arrangement of the display units is not limited to that shown in the drawings.

Next, regarding the control method of the injection molding machine 11, particularly the setting method and operation method of the mold opening / closing control items of the movable mold 14 and the intermediate mold 18, the mold opening / closing setting display screen 36 shown in FIG. This will be described with reference to the drawings showing the speed at the time of mold opening and closing. In the present invention, the mold open amount B (mold open amount B) of the movable mold 14 and the intermediate mold 18 and the mold open amount A (mold open amount A) of the fixed mold 16 and the intermediate mold 18 are set separately. Possible, mold opening speed at mold opening of movable mold and intermediate mold, mold opening speed at mold opening of fixed mold and intermediate mold, or mold at mold closing of movable mold and middle mold At least one of the closing speeds b1 and b2 and the mold closing speeds a1 and a2 when the fixed mold and the intermediate mold are closed can be set by one setting.

More specifically, a setting column 51a of the mold opening A is provided on the left side of the central portion in FIG. 3, and the mold opening A when the fixed mold and the middle mold are opened can be input. Further, in FIG. 3, a setting column 51b of the mold opening amount B is provided on the right side of the central portion, and the mold opening amount B of the intermediate mold and the movable mold can be input. Here, the mold opening amount indicates the mold opening completion position assuming that the mold closing completion position is 0, and in other words, indicates the distance between the molds at the time of mold opening completion. Different numerical values can be input to the setting column 51a of the mold opening amount A and the setting column 51b of the mold opening amount B, and setting of different mold opening amounts A and B is possible. However, it is obvious that the minimum value of the mold opening amounts A and B is limited by the fact that the intermediate mold 18 can rotate at the time of mold opening. It is also obvious that the maximum values of the respective mold opening amounts A and B are limited by the maximum strokes of the ball screw shafts 38. 45 of the mold opening and closing means 19 and 20. It is desirable to disable entry or display an error message when a numerical value exceeding the limit value is entered for these setting values.

On the upper side of the setting column 51a of the mold opening amount A and the setting column 51b of the mold opening amount B of the mold opening setting display portion 51, a mold closing control setting display portion 52 for setting and displaying the speed at mold closing is provided. ing. The mold closing control setting display unit 52 can set the mold closing speed of high-speed mold closing and low-speed mold closing at a ratio (percentage) of the maximum speed to 100, and can also set the switching position of control. . In the present embodiment, the mold closing speed described above is the mold closing speed a, the intermediate mold 18, and the movable mold 14 when one set value closes the mold opening amount A of the fixed mold 16 and the intermediate mold 18. The mold opening amount B is applied to both of the mold closing speed b at the time of mold closing. Therefore, it is possible to set both the mold closing speed a when the fixed mold 16 and the intermediate mold 18 are closed and the mold closing speed b when the intermediate mold 18 and the movable mold 14 are closed in one setting. More specifically, as shown in FIG. 4, the speeds a1 and b1 of the mold opening amount A and the mold opening amount B at high speed closing are controlled at the same speed, and the speeds a2 and b2 at low speed mold closing are also controlled. The movement is controlled at the same speed. The number of steps for inputting the mold closing speed, the input method, and the like are merely an example, and the present invention is not limited to the illustrated one. However, it is desirable that the speeds a1 and b1 of at least the majority of the high speed mold closing be the same.

The setting value of the mold closing speed in the mold closing control setting display section 52 is obtained by molding each of a molding mold consisting of the fixed mold 16 and the middle mold 18 or a molding mold consisting of the middle mold 18 and the movable mold 14. It is a relative velocity that indicates the change in distance when the mold is closed. Therefore, the moving speed (absolute speed) of the movable board 15 relative to the fixed board 17 (or bed 12) detected directly by the servomotor 37 of the mold opening / closing means 19 of the movable board, or the servomotor 43 of the mold opening / closing means 20 for the intermediate member It is not the moving speed (absolute speed) of the intermediate member 25 with respect to the movable plate 15 detected directly. As shown in FIG. 5, the mold closing speed d (absolute speed) of the intermediate member 25 with respect to the movable platen 15 directly detected by the servomotor 43 of the mold opening / closing unit 20 of the intermediate member It is half the mold closing speed c (absolute speed) of the movable board 15 with respect to the fixed board 17 directly detected by the motor 37. The high-speed mold closing speed d1 (absolute speed) and the low-speed mold closing speed d2 (absolute speed) among the mold closing speeds d of the intermediate member 25 with respect to the movable board 15 are also the high speed mold closing speed c1 with the movable board 15 relative to the fixed board 17. It is half the speed of (absolute speed) and the low speed mold closing speed (absolute speed).

Therefore, when the mold opening amount A between the fixed mold 16 and the intermediate mold 18 is larger than the mold opening amount B of the middle mold 18 and the movable mold 14, the mold closing when the mold opening A is closed is The required time is different between the time t1 and the mold closing time t2 when the mold opening amount B is closed. More specifically, the mold opening and closing of the intermediate member is started after a predetermined time t3 has elapsed since the mold closing movement (high speed mold closing movement) of the intermediate member 25 relative to the movable platen 15 by the servomotor 37 of the mold opening and closing means 19 of the movable platen is started. The mold closing movement (high speed mold closing movement) of the intermediate member 25 with respect to the movable platen 15 by the servomotor 43 of the means 20 is started. The servomotor 43 and the servomotor 37 reach the maximum speed at substantially the same or the same timing and are subjected to high-speed mold closing control, and are switched to the low-speed mold closing control at substantially the same or the same timing. For this reason, as shown in FIG. 4, the mold closing control can be performed with the mold opening speed A2 and the mold opening speed B which are substantially the same or the same relative low mold closing speed a2 and b2. The mold closing speeds a1 and a2 of the mold opening A and the mold closing speeds b1 and b2 of the mold opening B are respectively the same speed and switched at a low speed at substantially the same or the same timing. The intermediate mold 18 does not collide at high speed toward the mold 16.

In addition, while the input field of the control switching position of the mold closing control setting display unit 52 shares the input values of the mold opening amount A and the mold opening amount B, the strokes of the mold opening amount A and the mold opening amount B are different. In this case, in the present embodiment, the distance between the mold opening amount A and the mold opening amount B is automatically made to differ by the distance of the high-speed mold closing control from the mold closing start side to the first switching position. However, instead of the above-mentioned correspondence, another method may be adopted such as extending the set distance of each part except the low speed part of the longer stroke.

Below the setting column 51a of the mold opening amount A and the setting column 51b of the mold opening amount B of the mold opening amount setting display unit 51, a mold opening control setting display unit 53 for setting and displaying the speed at the time of mold opening. It is provided. As for the mold opening control setting display unit 53, as in the mold closing control setting display unit 52, the mold opening speeds for high-speed mold opening and low-speed mold opening can be set at a ratio (percentage) with 100 as the maximum speed. The switching position can also be set. In the present embodiment, the mold opening speed and the switching position are set such that one set value is the mold opening speed of the mold opening amount A of the fixed mold 16 and the intermediate mold 18 and the mold opening of the intermediate mold 18 and the movable mold 14. It is adapted to be applied to both of the mold opening speed of the quantity B. Therefore, in the present embodiment, the mold opening speed when the mold opening amount A of the fixed mold 16 and the intermediate mold 18 is one set value input to the mold open control setting display unit 53 is opened. The present invention is applied to both the mold opening speed at the time of mold opening of the mold opening amount B of the intermediate mold 18 and the movable mold 14.

The mold opening speed (relative speed) of the mold opening amount A of the fixed mold 16 and the intermediate mold 18 and the mold opening speed (relative speed) at the mold opening of the mold open amount B of the intermediate mold 18 and the movable mold 14 Regarding the relationship between the mold opening speed (absolute speed) when the movable board 15 is opened with respect to the fixed board 17 and the mold opening speed (absolute speed) when the intermediate member 25 is opened with respect to the movable board 15 It is the same as the relationship explained above. That is, even if the relative speeds of the two molds during mold opening are the same, the moving speed (absolute speed) of the movable board 15 with respect to the fixed board 17 when the mold is opened is the moving speed of the intermediate member 25 with respect to the movable board 15 It becomes a relation twice as high as (absolute speed).

However, the following points are different between the control at mold closing and the control at mold opening. That is, at the time of mold closing, the mold opening operation of the longer mold (the relative movement distance at mold closing) starts the mold closing operation of the longer mold first and starts the mold closing operation of the shorter mold later. While the low-speed mold closing timings are made to coincide with each other, at the time of mold opening, mold opening of the molding die is simultaneously started to make the low-speed mold opening timings coincide. Then, both molds perform the low-speed mold opening operation at the same speed and shift to the high-speed mold open operation at substantially the same or the same timing. Accordingly, since the high-speed mold opening operation of the intermediate member 25 and the movable platen 15 is simultaneously started, there is no risk that the dies collide with each other. Then, as described above, since the high-speed mold opening speed (relative speed) of both molding dies is the same speed, the mold opening of the shorter mold of the mold opening amount (relative movement distance at the time of mold opening) is opened. Ends first, and after a predetermined time has elapsed, the mold opening of the longer molding die is ended.

In addition, while the input value of the mold opening amount A and the mold opening amount B are shared, the values of the mold opening amount A and the mold opening amount B are different while the input column of the control switching position of the mold opening control setting display unit 53 is shared. In this case, the distance for high-speed setting performed from the last switching position is automatically made different between the mold opening amount A and the mold opening amount B. Note that another method may be adopted for the correspondence.

And in this embodiment, as shown in FIG. 1, the extraction machine 46 is inserted in the space of the stroke A which was opened more than the stroke B. Then, as one example, the composite molded article P stuck to the intermediate mold 18 and released therefrom is ejected by the ejector, held by the take-out machine 46 and carried out. Thus, when the mold opening amount of only one mold of the injection molding machine 11 is greatly expanded, it is suppressed when the mold opening / closing stroke of the entire injection molding machine 11 becomes excessive, and when it is removed from the mold. This makes it easy to take out a long deep molded article having a length in the mold opening / closing direction that requires space. Alternatively, there is an advantage such as easy handling even when the insert member is inserted into the mold for the next molding.

In the present invention, the mold opening time of the movable mold 14 and the intermediate mold 18 and the mold opening time of the fixed mold 16 and the intermediate mold 18 or the mold closing time and the fixed mold of the movable mold 14 and the intermediate mold 18 When at least one of the mold closing times of the mold 16 and the intermediate mold 18 is different between the mold opening amount B of the movable mold 14 and the intermediate mold 18 and the mold opening amount A of the fixed mold 16 and the intermediate mold 18 However, movement control may be performed at the same time t4 or t5. In that case, as shown in FIG. 6, the side with a small mold opening relative to the mold opening / closing speed e (relative speed) of the mold opening with a large mold opening (here, the mold opening A). The mold opening / closing speed f (relative speed) of the molding die of the mold opening amount (here, the mold opening amount B) is relatively low. In these cases, it is desirable that the speeds e1 and f2 at the high-speed mold closing and high-speed mold opening be different, and the speeds e2 and f2 at the low-speed mold closing and low-speed mold opening be common. In addition, it is desirable to share the switching time from high speed mold closing to low speed mold closing. In the above case, the absolute moving speed of the mold opening and closing means 19 of the movable platen and the mold opening and closing means 20 of the intermediate member during high speed mold opening and closing is not double. Control is performed so that the high speed mold opening / closing movement speed of the opening amount A = (high speed mold opening / closing distance of the mold opening amount B / the high speed mold opening / closing movement speed of the mold opening amount B).

Next, an injection molding machine according to a second embodiment will be described with reference to FIG. The injection molding machine used in the second embodiment is the same as the injection molding machine 11 of FIG. 1 except for the partial function of the control device and the setting display screen. The mold opening / closing setting display screen 101 includes a mold closing control setting display unit 102, a mold opening control setting display unit 103, a mold protection setting display unit 104, a strong mold opening setting display unit 105, and a mold opening completion position display unit 106. ing. Although in most cases the mold opening / closing setting display screen 101 is also capable of setting or displaying other elements, only the part related to the invention will be illustrated and described here.

The injection molding machine of the second embodiment performs setting from the window of the mold opening / closing setting display screen 101 to set the setting values for molding using the movable mold 14 and the intermediate mold 18 and the middle of the fixed mold 16 and the middle. Both of the setting values for molding using the mold 18 can be set by one setting. Specifically, the mold closing speed set and input from the window of the mold close control setting display unit 102 in the same manner as the example described in FIG. 3 has one set value being the mold of the fixed mold 16 and the intermediate mold 18. The present invention is applied to both the mold closing speed a when closing the opening / closing stroke A and the mold closing speed b when closing the mold opening / closing stroke B of the intermediate mold 18 and the movable mold 14. Similarly, the value at which the speed switching position is set and input from one window is adapted to be applied to both the mold opening and closing stroke A and the mold opening and closing stroke B. Therefore, it is possible to set both the mold closing speed a when the fixed mold 16 and the middle mold 18 are closed and the mold closing speed b when the middle mold 18 and the movable mold 14 are closed by one setting and input. . Further, at this time, mold closing speeds a and b at the time of mold closing of the both molding dies are relative speeds related to the mold movement between the opposing molds. Therefore, the moving speed (absolute speed) of the movable board 15 with respect to the fixed board 17 at the time of mold closing is twice as high as the moving speed (absolute speed) of the intermediate member 25 with respect to the movable board 15. The same as the example of.

Next, the mold protection setting display unit 104 and the input (setting) of the set value of the mold protection control will be described. In the window of the mold protection setting display portion 104, a set value of mold protection when the fixed mold 16 and the intermediate mold 18 are closed and a mold protection for closing the intermediate mold 18 and the movable mold 14 Both set values can be input. Mold protection power, mold protection start position (mold protection stroke), and detection time of mold protection can be set as set values for mold protection. When these setting display windows of the mold protection setting display unit 104 are initially input with one of the windows (for example, mold protection A), the same value is automatically set for the other window (for example, mold protection B) Is displayed, and the same setting value is set. However, depending on the molding die, the setting value of mold protection when closing fixed mold 16 and intermediate mold 18 and the setting value of mold protection for closing intermediate mold 18 and movable mold 14 are You may need to make them different. In order to prepare for such a case, there is also provided a function for inputting a different mold protection setting value for each mold. Specifically, when the mold protection value is continuously input from one window and the other window in succession, it may be possible to set different values, or, in another column, “mold protection value” A button such as “individual input” may be provided to allow another value to be input.

The setting from the window of the mold opening control setting display section 103 of the mold opening / closing setting display screen 101 is basically the same as the setting from the window of the mold closing control setting display section 102 and the movable mold 14 and the intermediate metal are Both of the setting values for molding using the mold 18 and the setting values for molding using the fixed mold 16 and the intermediate mold 18 can be set by one setting. That is, the mold opening speed inputted from the window of the mold opening control setting display section 103 is the mold opening speed a when one set value opens the mold open amount A of the fixed mold 16 and the intermediate mold 18 and the intermediate metal The present invention is adapted to be applied to both the mold opening speed at the time of mold opening and the mold opening amount B of the mold 18 and the movable mold 14. Similarly, the switching position of the speed input from the window of the mold opening control setting display unit 103 is also applied to both. Further, a value obtained by adding up each section from the switching position of each speed is displayed on the window of the mold opening completion position display portion 106 as the mold opening completion position.

Next, the strong mold open setting display unit 105 and the input (setting) of the set value of the mold protection will be described. In the strong mold open setting display unit 105, setting values of the strong mold open control at the time of releasing the fixed mold 16 and the intermediate mold 18 at the time of mold opening first, and mold the intermediate mold 18 and the movable mold 14 Both of the setting values of the strong mold opening control at the time of releasing the mold at the beginning of opening can be input. The setting values input from the window of the strong mold open setting display unit 105 include speed, mold opening force, and position (strong mold open stroke). Then, when these windows are initially input to either window of the strong mold open, the same values are automatically input to the other window of the strong mold open B, and both are set to the same setting. ing. In the injection molding machine 11 of the present embodiment, the strong mold open control between the fixed mold 16 and the intermediate mold 18 is performed using a mold clamping cylinder 22. The strong mold opening control between the movable mold 14 and the intermediate mold 18 is performed using the servomotor 37 of the mold opening / closing means 19 of the movable platen 15. Therefore, input values such as speed and mold opening force are calculated and controlled so that the respective actuators can exhibit the values.

Also, depending on the type of molding die, the setting value of the strong mold opening control when the fixed mold 16 and the intermediate mold 18 are opened, and the strong mold when the intermediate mold 18 and the movable mold 14 are opened. It may be necessary to make it different from the setting value of the open control. In that case, the mold opening / closing setting display screen 101 has a function of inputting another setting value of strong mold opening between the fixed mold 16 and the intermediate mold 18 and between the movable mold 14 and the intermediate mold 18 Also has. Various specific input means can be considered as in the case of mold protection control. If the position of the strong mold open control (strong mold open stroke) is set to the same for each mold, the mold opening amount in the low speed section and the high speed section can be easily set to the same amount. It is desirable to use the same setting for the mold. Note that the strong mold opening is control to release the mold and then open a fixed distance by using the mold clamping cylinder 22 other than the mold opening and closing means 19 of the movable platen and the four mold opening and closing means 20 as an example of the intermediate member. is there. Therefore, in the present embodiment, the strong mold open stroke of the mold clamping cylinder 22 and the strong mold open stroke of the mold opening / closing means 20 are set to the same value by the setting input value of one strong mold open.

However, it is also conceivable that the strong mold open strokes of the movable mold 14 and the intermediate mold 18 are different from the strong mold open strokes of the fixed mold 16 and the middle mold 18. In that case, high and low speed mold opening speeds of mold opening stroke B between movable mold 14 and intermediate mold 18 and high speed and low speed mold opening speeds of mold opening stroke A of fixed mold 16 and intermediate mold 18 It is desirable to move the molds by moving the molds and simultaneously move the respective molds to the mold opening completion positions of the same mold opening amounts A and B at the same time. However, after the strong mold opening, the mold opening stroke may be moved at the same mold opening speed by the same mold open stroke, and the mold open amount A and the mold open amount B may be different at the mold open completion position.

In addition, one setting is also made for core operation, air operation, and mold heating operation of both of the molding die comprising the movable die 14 and the intermediate die 18 and the molding die comprising the fixed die 16 and the intermediate die 18 It may be performed by The operation start of these mold mechanisms may be input either in conjunction with the position of the intermediate mold 18 or the movable mold 14 at the time of mold opening / closing control, and both may be operated at the same position. . Alternatively, either one may be input according to the time (timer) from the mold closing start or the mold opening start, and both may be operated simultaneously.

The setting values for molding using the movable mold 14 and the intermediate mold 18 and the setting values for molding using the fixed mold 16 and the intermediate mold 18 also include setting values on the injection side. As an example, after the mold clamping cylinder 22 is pressurized to a predetermined value and mold clamping is completed, the injection delay time until injection of the injection devices 49 and 50 is started is set on the setting display screen by one. The injection delay time of the injection devices 49 and 50 is changed. At this time, setting input units are provided for each of the injection device 49 and the injection device 50, and when the value of the setting input unit of one of the injection devices 49 is changed, the value of the setting input unit of the other injection device 50 is also changed. It is also good. The injection delay setting input unit may be one. Furthermore, even when the injection delay time from completion of mold clamping of the mold clamping device is made different between the injection device 49 and the injection device 50, a predetermined value is added to or subtracted from the setting input value of the injection delay of one injection device 49 The set value of the injection device 50 may be set. The same applies to injection compression molding.

In addition to the above, regarding the setting input on the side of the injection devices 49 and 50, the nozzle touch force, the measurement time, the purge time and the number of purges, and the heater between the injection devices 49 and 50 when raising the temperature from the stopped state (heater off state). The difference between the energization start time and the like is also the setting value of the injection device 49 related to the molding of the fixed mold 16 and the intermediate mold 18, and the setting value of the injection device 50 related to the molding of the intermediate mold 18 and the movable mold 14 is one. It may be settable by setting.

Next, injection molding is performed using the same mold in the injection molding machine 11 with a molding mold A1 consisting of the fixed mold 16A and the intermediate mold 18A and a molding mold B1 consisting of the intermediate mold 18B and the movable mold 14B. An example of the method is described with reference to FIG. In the case of this injection molding method, the rotary disk 30 and the intermediate molds 18A and 18B are not rotated every molding. The intermediate mold 18A is always closed with the fixed mold 16A to form a cavity C1A of the molding mold A1. The intermediate mold 18B is always closed with the movable mold 14B to form the cavities C1B of the molding mold B1, and the same molded product is formed in the respective cavities C1A and C1B. In this case, set the timing of operation (timer), movement distance, cooling time, etc. of the core operation, ejector operation, valve gate operation of one molding die A1 or molding die B1 from the setting display screen of the operation panel 31. Thus, the setting of the other molding die B1 or the molding die A1 is simultaneously performed. Alternatively, if one setting input unit for molding the same molded product on the setting display screen of the operation panel 31 is provided, and setting input is performed once from the setting input unit, the molding die A1 and the molding die B1 are simultaneously processed. The setting may be performed.

In the case of using the injection molding machine 11 and using the same molding die A1 and the same molding die B2 and separately molding the same molded article PA and the molded article PB without rotating the rotary disc 30, respectively. If the injection device A2 and the injection device B2 also have the same specifications, setting the molding conditions from the operation panel 31 to one injection device A2 or injection device B2 will set the other injection device B2 or injection device A2 The setting may be performed at the same time. Alternatively, if one setting input unit for molding the same molded product on the setting display screen of the operation panel 31 is provided and setting input is performed from the setting input unit, setting is simultaneously performed on the injection device A2 and the injection device B2. You may do so. When these same molding dies A1 and B1 or injection devices A2 and B2 are used, fine differences often exist between the molding dies A1 and B2 or the injection devices A2 and B2. Therefore, it is desirable to make settings at the same time at the same time, look at the state of molded articles PA and PB, etc., and make it possible to finely correct at least one of the condition values later.

In the injection molding method in which the rotating disk 30 and the intermediate molds 18A and 18B are not rotated each time of molding, the forming mold A1 consisting of the fixed mold 16A and the intermediate mold 18A, the intermediate mold 18B and the movable mold 14B are used. It is also conceivable that different molds B1 use different molds. Even when molding another molded product with these molding dies A1 and B1, in general, the mold closing time is the same, so the cooling time is common. Therefore, if the cooling time of one molding die A1 is set and input from the setting display screen of the operation panel 31, the other molded product B1 is also linked and set to the same time or an approximation time.

Further, as the injection molding machine used in the present invention, injection molding machines 61 and 71 of the arrangement of the mold opening and closing means as shown in FIGS. 7 and 8 may be used. The injection molding machine 61 of FIG. 7 has a mold opening / closing means 64 (an electric mechanism or a hydraulic mechanism) of an intermediate member attached between the fixed board 62 (or base) and the intermediate member 63, and the fixed board 62 (or base) Since the movable plate mold opening / closing means 66 (electric mechanism or hydraulic mechanism) of the movable plate is attached between the movable plate 65 and the movable plate 65, the moving speed of the intermediate member 63 and the moving speed of the movable plate 65 are respectively fixed plate 62 (or base) It can be detected as a velocity for the control, and the control may be simpler than that of FIGS. 1 and 2 in terms of mold opening / closing control.

Further, in the injection molding machine 71 of FIG. 8, the first mold opening / closing means 74 is attached between the fixed plate 72 (or base) and the intermediate member 73, and the second of the injection molding machine 71 is provided between the intermediate member 73 and the movable plate 75. A mold opening and closing means 76 is attached. Accordingly, the movable plate 75 is moved by the first and second mold opening and closing means 74 and 76. Therefore, in the injection molding machine 71 of FIG. 8 as well, the moving amount and moving speed of the first mold opening / closing means 74 and the second mold opening / closing means 76 directly become the moving amount and moving speed of the molding die. Control may be simplified if Even in the case of these injection molding machines 61 and 71, the mold opening amounts of the movable molds 69 and 79 and the intermediate molds 68 and 78 and the mold opening amounts of the fixed molds 67 and 77 and the intermediate molds 68 and 78 are respectively different. The mold opening speed of the molding mold comprising movable molds 69, 79 and the middle mold 68, 78 and the mold opening speed of the molding mold comprising the fixed mold 67, 77 and the middle mold 68, 78. Or at least one of mold closing speed of a molding mold consisting of movable molds 69 and 79 and middle mold 68 and 78 and mold closing speed of a molding mold consisting of fixed molds 67 and 77 and middle mold 68 and 78 Can be set by one setting. Further, as a modification of the injection molding machine 71 of FIG. 8, the rotatable intermediate member 73 and the intermediate mold 78 are fixed in the mold opening / closing direction or can be moved only slightly. The first movable board and the second movable board provided respectively on both sides may be moved toward the intermediate member 73 in the mold opening and closing direction.

Further, in the above embodiment, the intermediate mold 18 is attached to both sides of the rotary disc 30 attached to the intermediate member 25. However, intermediate molds may be attached to each of the four sides of the rotating plate. Further, in the injection molding machine 11, 61, 71 of FIGS. 1, 7 and 8, the intermediate member is not provided with a rotary disk, and the intermediate mold is mounted on a rotary table movable on the base in the mold opening and closing direction. May be attached directly. In that case, the mold opening / closing means is attached to a rotating table which is an intermediate member.

The present invention is not limited to the embodiments but is not limited to the embodiments but is also applied to combinations of the above descriptions and those modified by those skilled in the art based on the spirit of the present invention. It goes without saying.

11, 61, 71 Injection molding machine 13 Clamping device 14, 69, 79 Movable mold 15, 65, 75 Movable platen 16, 67, 77 Fixed mold 17, 62, 72 Fixed platen 18, 68, 78 Intermediate mold 19, 66 Movable plate mold opening / closing means 20, 64 Intermediate member mold opening / closing means 21 Clamping means 22 Mold clamping cylinder 25, 63, 73 Intermediate member 31 Operation board 36 Model open / close setting display screen 37, 43 Servomotors A, B Die opening amount a1, b1 Die closing speed (high speed)
a2, b2 closing speed (low speed)

Claims (8)

An intermediate mold is movably and rotatably disposed in a mold opening / closing direction between a movable board to which the movable mold is attached and a fixed board to which the fixed mold is attached. The fixed mold and the intermediate mold, and the movable metal In a control method of an injection molding machine in which a mold and an intermediate mold are respectively closed by mold opening and closing means to form respective cavities, and the mold clamping is performed by the mold clamping means,
Set values at mold opening of movable mold and intermediate mold and set values at mold open of fixed mold and intermediate mold, or set values at mold closing of movable mold and intermediate mold, fixed mold and At least one of the setting values at the mold closing time of the intermediate mold can be automatically set by one setting, and the value at the time of mold opening operation or mold closing operation of each mold opening / closing means is calculated by the setting value. A control method of an injection molding machine characterized by being controlled. Set value of mold opening speed at the time of mold opening of movable mold and intermediate mold and set value of mold opening speed at the time of mold opening of fixed mold and intermediate mold, or at the time of mold closing of movable mold and intermediate mold At least one of the mold closing speed setting value and the mold closing speed setting value at the time of mold closing of the fixed mold and the intermediate mold can be automatically set by one setting, and the respective mold opening and closing can be performed by the above setting values. The control method of an injection molding machine according to claim 1, wherein the mold opening speed at the time of mold opening of the means or the mold closing speed at the time of mold closing of the respective mold opening / closing means is calculated and controlled. An intermediate mold is movably and rotatably disposed in a mold opening / closing direction between a movable board to which the movable mold is attached and a fixed board to which the fixed mold is attached. The fixed mold and the intermediate mold, and the movable metal In a control method of an injection molding machine in which a mold and an intermediate mold are respectively closed by mold opening and closing means to form respective cavities, and the mold clamping is performed by the mold clamping means,
The mold opening amount of the movable mold and the intermediate mold and the mold opening amount of the fixed mold and the intermediate mold can be set separately, and the mold opening speed at the mold opening of the movable mold and the intermediate mold and the fixed metal At least one of mold opening speed at mold opening of mold and intermediate mold or mold closing speed at mold closing of movable mold and intermediate mold and mold closing speed at mold closing of fixed mold and intermediate mold A control method of an injection molding machine characterized by automatically setting by one setting, and calculating and controlling a value at the time of mold opening operation or at the time of mold closing operation of each of the mold opening and closing means by the setting value. . Mold opening speed at high speed mold opening of movable mold and intermediate mold and mold opening speed at high speed mold opening of fixed mold and intermediate mold, or mold closing at high speed mold closing of movable mold and intermediate mold The control of the injection molding machine according to claim 2 or 3, wherein the movement of at least one of the speed and the closing speed of the fixed mold and the mold at high speed opening and closing of the intermediate mold is controlled at the same speed. Method. The mold opening time of the movable mold and the intermediate mold and the mold opening time of the fixed mold and the intermediate mold, or the mold closing time of the movable mold and the intermediate mold and the mold closing time of the fixed mold and the intermediate mold The movement control is performed in the same time even if one of the movable molds and the intermediate mold has different mold open amounts and the fixed mold and the intermediate mold have different mold open amounts. Of injection molding machine control method. The intermediate mold is movably and rotatably disposed in the mold opening / closing direction between the movable board to which the movable mold is attached and the fixed board to which the fixed mold is attached. The fixed mold, the intermediate mold, and the movable metal In an injection molding machine in which a mold and an intermediate mold are respectively closed by mold opening and closing means to form respective cavities, and the mold clamping is performed by the mold clamping means,
Set values at mold opening of movable mold and intermediate mold and set values at mold open of fixed mold and intermediate mold, or set values at mold closing of movable mold and intermediate mold, fixed mold and At least one of the setting values at the mold closing time of the intermediate mold can be automatically set by one setting, and the value at the time of mold opening operation or mold closing operation of each mold opening / closing means is calculated by the setting value. An injection molding machine characterized by being controlled. Set value of mold opening speed at the time of mold opening of movable mold and intermediate mold and set value of mold opening speed at the time of mold opening of fixed mold and intermediate mold, or at the time of mold closing of movable mold and intermediate mold At least one of the mold closing speed setting value and the mold closing speed setting value at the time of mold closing of the fixed mold and the intermediate mold can be automatically set by one setting, and the respective mold opening and closing can be performed by the above setting values. 7. The injection molding machine according to claim 6, wherein the mold opening speed at the time of mold opening of the means or the mold closing speed at the time of mold closing of each of the mold opening / closing means is calculated and controlled. The intermediate mold is movably and rotatably disposed in the mold opening / closing direction between the movable board to which the movable mold is attached and the fixed board to which the fixed mold is attached. The fixed mold, the intermediate mold, and the movable metal In an injection molding machine in which a mold and an intermediate mold are respectively closed by mold opening and closing means to form respective cavities, and the mold clamping is performed by the mold clamping means,
Set values at mold opening of movable mold and intermediate mold and set values at mold open of fixed mold and intermediate mold, or set values at mold closing of movable mold and intermediate mold, fixed mold and At least one of the setting values at the time of mold closing of the intermediate mold can be set by one setting, and the same setting value is automatically displayed on the setting display screen by the setting, and the respective mold opening / closing means by the setting value An injection molding machine characterized in that the value at the time of mold opening operation or at the time of mold closing operation is calculated and controllable, and another setting value can also be inputted on the setting display screen.