JP6779767B2 - Molded product take-out machine - Google Patents

Description

The present invention relates to a molded product take-out machine capable of suppressing displacement vibration of an attachment mounted on an approach frame in a short time.

Japanese Patent Application Laid-Open No. 2010-110112 (Patent Document 1) describes the vibration component of the take-out head in a molded product take-out device provided with a take-out head (attachment) driven by a drive source to take out the molded product from the molding machine. An input table and a control means for controlling the moving speed of the take-out head so as to drive a servomotor (drive source) by feed-forward control using this table and suppress the displacement vibration of the take-out head are provided to take out. A technique for suppressing head vibration is disclosed.

Further, in Japanese Patent Application Laid-Open No. 2004-223798 (Patent Document 2), a chuck (attachment) for holding a molded product is moved between predetermined positions to control the movement of the chuck (attachment) to take out the molded product from the resin molding machine. And at least one of the movable bodies for moving the chuck is disclosed as a vibration suppression device for a molded product take-out machine provided with a dynamic vibration absorbing device for generating vibration that cancels the residual vibration of the movable body when the movement is stopped. The dynamic vibration absorbing device used is a device in which a fluid is fluidly sealed in a container and vibrated, and the vibration is converged by a damping rate due to the viscosity of the fluid.

Japanese Unexamined Patent Publication No. 2010-11102 Japanese Unexamined Patent Publication No. 2004-223798

However, in the prior art of Patent Document 1, there is a problem that it takes time to suppress vibration. In addition, there is a problem that it is difficult to set conditions for suppressing vibration.

Further, in the conventional technique described in Patent Document 2, it is necessary to individually prepare a dynamic vibration absorbing device that utilizes the viscosity of a fluid that generates appropriate resonance vibration in response to a change in extraction conditions, which is a problem in terms of versatility. was there.

An object of the present invention is to provide a molded product take-out machine capable of suppressing displacement vibration of an attachment attached to each tip of an approach frame on one by active control using one or more electromagnetic actuators. ..

In the present invention, each of one or more approach frames controlled by a positioning servo mechanism using a motor is provided with an attachment, and vibration of the opposite phase to the displacement vibration of the attachment is added to the attachment from one or more actuators, and the displacement vibration of the attachment. The target is a molded product take-out machine equipped with an active vibration suppression device that performs active control. In the specification of the present application, the attachment is various accessory parts attached to the approach frame, and includes an attitude control device including a take-out head, a reversing part to which the take-out head is mounted, a chuck device, a cutter device, and the like. .. In the present invention, one or more actuators are composed of one or more electromagnetic actuators. Then, one or more actuators mount one or more electromagnetic actuators on each attachment of one or more approach frames or each one or more approach frames so as not to collide with the mold of the molding machine. Compared with the dynamic vibration absorber, the electromagnetic actuator can arbitrarily set the magnitude of vibration. Therefore, the active control can be applied to the molded product take-out machine with high versatility.

One or more entry frames include a first entry frame with an attachment used to remove the part from the mold of the molding machine or to which an insert component to be inserted into the mold is mounted, and a first entry frame. Includes a second entry frame with an attachment used to separate the waste portion from the part taken out in use. It should be noted that one or more approach frames do not need to enter in the vertical direction, but include those that enter in the diagonal direction or the horizontal direction.

For one or more electromagnetic actuators, the direction in which the approach frame enters is orthogonal to the Z direction and the Z direction, and the direction in which the attachment approaches or leaves the molded product in the mold is orthogonal to the Y direction, the Z direction, and the Y direction. When the direction is defined as the X direction, it includes a first electromagnetic actuator that suppresses displacement vibration in at least the Y direction. This is because, in the molded product take-out machine, the vibration in the Y direction has a great influence on the take-out of the molded product and the insertion of the insert member.

Further, the one or more electromagnetic actuators may include a first electromagnetic actuator that suppresses displacement vibration in the Y direction and a second electromagnetic actuator that suppresses displacement vibration in the X direction. In particular, the displacement vibration in the X direction has a great influence on the positioning accuracy when the molded product is opened at the open position and when the insert component is inserted.

Further, one or more electromagnetic actuators include a first electromagnetic actuator that suppresses the displacement vibration in the Y direction, a second electromagnetic actuator that suppresses the displacement vibration in the X direction, and a third electromagnetic actuator that suppresses the displacement vibration in the Z direction. It may include an electromagnetic actuator. If the first to third electromagnetic actuators are provided in this way, active control can be performed at all times.

When the attachment includes an attitude control device that controls the attitude of the take-out head, it is preferable to attach one or more electromagnetic actuators to the attitude control device. Although the attitude control device has a built-in mechanism for controlling the attitude of the take-out head, it is easy to secure a mounting space for one or more electromagnetic actuators, and the vibration transmission efficiency to the take-out head is excellent. There is. Further, since the frequency of replacement of the take-out head is very low as compared with the frequency of replacement of the take-out head, the cost for practical use of active control can be significantly reduced. Therefore, it is preferable that the attitude control device is provided with a storage portion for storing one or more electromagnetic actuators. If there is a housing, it is possible to prevent the electromagnetic actuator from unnecessarily interfering with surrounding parts.

When the attachment includes an attitude control device including a take-out head, one or more electromagnetic actuators may be attached to the take-out head. If an electromagnetic actuator is attached to the take-out head, vibration can be suppressed most efficiently.

When the molded product is taken out from the molding machine, one or more electromagnetic actuators may be mounted on the housing of the attitude control device so that one or more electromagnetic actuators are located outside the bottom surface of the housing of the attitude control device. In this way, one or more electromagnetic actuators can be mounted on the housing of the existing attitude control device.

When the attachment attached to one or more of the approach frames has a structure in which the take-out head is attached to the attitude control device, the first position and the first position and the first position are outside the housing of the attitude control device. It is preferable that a take-out head attachment that can rotate between the two positions is attached. When the take-out head fitting is in the first position, the take-out head extends along the approach frame, the electromagnetic actuator is located below the attitude control device, and the take-out head fitting is the second. When in position, it is preferred that the take-out head extend in a direction orthogonal to the direction in which the approach frame extends and that the electromagnetic actuator is located lateral to the attitude control device. When this take-out head attachment is used, when the take-out head enters between the molds, the electromagnetic actuator is located under the attitude control device, so that the take-out head does not collide with the mold. When the take-out head is out of the mold and is in the second position, the molded product is released from the take-out head. Even at this time, if the electromagnetic actuator is operated, the displacement vibration of the take-out head is generated. Can be suppressed.

The electromagnetic actuator may be attached to the outer periphery of the tip of the approach frame so as to be located near the attachment. The entry frame usually does not have its tip between the molds. Therefore, if an electromagnetic actuator is placed on the outer periphery of the tip of the approach frame, vibration for suppressing displacement vibration can be efficiently applied to the attachment in the vicinity.

The active vibration suppression device is active-controlled from before the molded product is taken out of the mold or the insert component is inserted into the mold using the attachment provided in the entry frame until the molded product is opened at the molded product open position. It is preferable to do. In this way, not only the take-out of the molded product and the insertion of the insert component are speeded up, but also the deformation of the molded product due to the vibration applied before curing can be effectively prevented.

Further, the motor of the servo mechanism for moving the approach frame is an AC servomotor, and a belt type, rope type or trolley type transfer mechanism can be provided between the AC servomotor and the approach frame.

The active vibration suppression device further includes a displacement vibration detection unit that outputs a displacement vibration detection signal proportional to the displacement vibration of the attachment, and an additional vibration detection unit that outputs an additional vibration detection signal proportional to the additional vibration generated by the electromagnetic actuator itself. A drive signal generator that generates a drive signal necessary for actively controlling one or more electromagnetic actuators so as to suppress the displacement vibration of the attachment based on the displacement vibration detection signal and the additional vibration detection signal is provided. There is. In the present invention, at least the displacement vibration detection unit is configured to output the displacement vibration detection signal without using a sensor inserted in the mold of the molding machine. In the present invention, since the output of the displacement vibration detection unit is not affected by the atmospheric temperature between the molds, active control can be reliably executed. Further, since it is not necessary to insert the sensor into the mold, a collision between the sensor and the mold does not occur.

As a displacement vibration detector that does not place a sensor in the mold, the displacement vibration detection detects the motor current signal of the motor or the torque signal of the motor or the signal proportional to the motor current signal or the torque signal of the motor in the servo mechanism that moves the approach frame. Those configured to be output as a signal can be used. In active control, the displacement vibration needs to be detected as a displacement vibration detection signal including information on the displacement vibration frequency component proportional to the displacement vibration of the attachment. The inventor found that the motor current signal or motor torque signal of the motor in the servo mechanism that moves the approach frame, or the signal proportional to the motor current signal or motor torque signal, is the displacement vibration frequency component that is proportional to the displacement vibration of the attachment. Found to contain information. Based on this finding, as the displacement vibration detector, the motor current signal of the motor in the servo mechanism that moves the approach frame, the torque signal of the motor, or the signal proportional to the motor current signal or the torque signal of the motor is proportional to the displacement vibration of the attachment. It was found that a device that outputs a displacement vibration detection signal can be used. The displacement vibration detector detects the motor current signal of the motor in the servo mechanism, the torque signal of the motor, or the signal proportional to the motor current signal or the torque signal of the motor, and from this signal to the displacement vibration in the X direction or the Y direction. Obtaining information on the proportional displacement vibration frequency component eliminates the need to provide a special sensor around the attachment or molding machine mold to detect the displacement vibration of the attachment. Since the motor current signal and torque signal of the motor can always be measured, according to the present invention, active control can be performed even when the take-out machine operates outside the mold.

Further, the displacement vibration detection unit may be configured to output a displacement feedback signal of the motor in the servo mechanism for moving the approach frame or a signal proportional to the displacement feedback signal as a displacement vibration detection signal. This is based on the finding that the displacement feedback signal also contains a component that changes in proportion to the displacement vibration, according to the research of the inventor.

When the electromagnetic actuator is inserted into the mold or placed close to the mold, the additional vibration detection signal proportional to the additional vibration generated by the electromagnetic actuator itself is also sensorless, and the additional vibration is eliminated without using a sensor. It is preferable that the detection signal is output. Specifically, the additional vibration detection unit detects the counter electromotive force generated when the power proportional to the drive signal is input to the electromagnetic actuator, and outputs the signal proportional to the counter electromotive force as the additional vibration detection signal. Can be. Specifically, the counter electromotive force can be obtained by calculation from the voltage appearing in the resistor connected in series with the exciting coil, the voltage appearing at both ends of the exciting coil, and the exciting voltage of the exciting coil. If it is a resistor, it is hardly affected by changes in temperature, so that it can be made sensorless.

When the electromagnetic actuator is arranged outside the mold, an acceleration sensor mounted on the mover of the electromagnetic actuator to detect the acceleration of the mover can be used as the additional vibration detection unit. It is also possible to use a strain gauge as a sensor other than the acceleration sensor.

In the specification of the present application, the displacement vibration means the vibration of the displacement of the position of the attachment. The displacement vibration includes a plurality of vibration frequency components based on the primary vibration, the secondary vibration, and the like generated by the operation of the approach frame and the attachment. Therefore, a phase correction unit may be further provided to correct the phase shift of the displacement vibration detection signal output by the displacement vibration detection unit based on the phase shift information obtained in advance and generate a correction displacement vibration detection signal. In this case, the drive signal generator generates the displacement vibration of the electromagnetic actuator based on the phase-corrected displacement vibration frequency component included in the corrected displacement vibration detection signal and the additional vibration frequency component included in the additional vibration detection signal. It is preferably configured to generate a drive signal so as to suppress it. A phase shift occurs between the displacement vibration detection signal and the actual displacement vibration due to various factors such as the configuration of the displacement vibration detection unit. In the case of a molded product take-out machine, once the setting is made, the shape and weight of the take-out head and the molded product to be taken out do not change. Therefore, this phase shift can be obtained in advance by pre-measurement before starting the take-out operation. Therefore, it is preferable to correct the phase shift of the displacement vibration detection signal based on the phase shift information obtained in advance to generate the corrected displacement vibration detection signal and suppress the oscillation based on the phase shift. The electromagnetic actuator is often mounted on the entry frame or attachment in order to suppress the vibration of the take-out head. The additional vibration detection unit detects the additional vibration in the horizontal direction or the vertical direction generated by the actuator itself, and outputs an additional vibration detection signal including information on the additional vibration frequency component of the additional vibration. When the actuator is operated based on the corrected displacement vibration detection signal to perform the vibration damping operation, the active control is performed with the additional vibration frequency component in the horizontal direction of the actuator itself included in the displacement vibration frequency component. .. However, if active control using an actuator is performed in a state where this additional vibration frequency component is included, it may take time to suppress the displacement vibration or the vibration damping operation may oscillate. Therefore, the drive signal generator is based on the displacement vibration frequency component included in the corrected displacement vibration detection signal and the additional vibration frequency component included in the additional vibration detection signal, and is not affected by the additional vibration frequency component. Generates the drive signal required to suppress the horizontal or vertical vibration of the. As described above, the reason why the vibration cannot be suppressed only by the drive signal generated based only on the detection signal including the information of the displacement vibration frequency component is the additional vibration (additional vibration) generated due to the vibration of the electromagnetic actuator itself. This is because the vibration frequency component) is included in the displacement vibration frequency component. Therefore, the drive signal generator adds vibration by the additional vibration of the vibrator of the electromagnetic actuator that generates vibration to suppress the horizontal or vertical vibration of the take-out head in addition to the detection signal including the information of the displacement vibration frequency component. The information on the vibration frequency component can be used to generate a drive signal that is not affected by the additional vibration frequency component.

In particular, specifically, the drive signal generator adjusts the gain of the corrected displacement vibration detection signal and the gain of the additional vibration detection signal, and then the additional vibration frequency generated by the additional vibration of the actuator included in the displacement vibration frequency component. It is configured to perform operations that reduce or eliminate the effects of components. By adjusting the gain, the difference in dimension and amplitude between the corrected displacement vibration detection signal and the additional vibration detection signal is adjusted to enable calculation.

According to the study of the inventor, the additional vibration frequency component detected by the additional vibration detection unit is preferably the frequency component of the speed of the additional vibration. This is to increase the damping of the additional vibration and prevent oscillation.

Further, a displacement sensor for detecting the transverse displacement vibration when the attachment is displaced and vibrated in the X direction may be provided at the open position of the molded product. In this case, it is preferable that the active vibration suppression device is configured to perform active control for suppressing transverse displacement vibration by using a second electromagnetic actuator based on the output of the displacement sensor.

It is a figure which shows the whole structure of the molded article take-out machine of embodiment of this invention. It is a block diagram which shows the structure of a control part. (A) is a waveform diagram showing the vibration state of the take-out head during the pull-out operation so that the vibration waveform measured by the laser displacement meter and the torque command waveform of the servomotor can be compared, and (B) is each vibration waveform. It is a figure which showed the proportional relationship from the peak value of. It is the figure which showed the process of generating the drive signal of an actuator by a waveform. It is a waveform diagram which shows the active control result which used the output of a laser displacement meter as a displacement vibration detection signal, and the active control result of this Embodiment. It is a waveform diagram which shows the test result which added the vibration-damping result when active control is not performed, and the vibration-damping result when phase correction is not performed to the result of FIG. (A) and (B) are perspective views and sectional views of an example of an electromagnetic actuator that can be used in this embodiment. It is a waveform diagram used for explaining that the displacement feedback signal obtained by integrating the feedback speed is proportional to the motor torque. It is a figure which shows an example of the circuit for acquiring the signal proportional to the back electromotive force generated in the exciting coil which excites the mover of an electromagnetic actuator. It is a waveform diagram which shows the component waveform of the back electromotive force obtained by calculation and the acceleration integration waveform (additional vibration detection signal) of an additional system detected by an acceleration sensor side by side. It is a figure which showed the structure and process of generating the drive signal of an electromagnetic actuator as an additional vibration detection signal with the back electromotive force component waveform calculated by using the output voltage of a shunt resistor together with the waveform. It is a figure used for the explanation of performing the active control which suppresses a transverse displacement vibration at an open position of a molded product. (A) to (D) are a schematic perspective view of a second embodiment of the molded article take-out machine of the present invention, a perspective view of a main part centering on an attachment, a side view thereof, and a perspective view of a deformed attachment. is there. (A) to (C) are perspectives of the main part centering on the attachment of the embodiment using the rotary reversing unit capable of rotating around the frame line of the approach frame as the attitude control device of the attachment. It is a figure, the side view, and the perspective view of the deformed attachment. (A) to (D) are a schematic perspective view of a third embodiment of the molded article take-out machine of the present invention, a perspective view of a main part centering on an attachment, a side view thereof, and a perspective view of a deformed attachment. is there. (A) to (D) are a schematic perspective view of a fourth embodiment of the molded article take-out machine of the present invention, a perspective view of a main part centering on an attachment, a side view thereof, and a perspective view of a deformed attachment. is there. (A) to (C) are a schematic perspective view of a fifth embodiment of the molded article take-out machine of the present invention, a perspective view of a main part centering on an attachment, and a side view thereof. The test result for confirming what kind of difference occurs when active control is not performed by the difference in the mounting position of the electromagnetic actuator in the 2nd Embodiment to the 5th Embodiment is shown. The test results for confirming what kind of difference occurs when active control is performed by the difference in the mounting position of the electromagnetic actuator in the second embodiment to the fifth embodiment are shown. (A) to (C) are a perspective view of a main part centering on the attachment of the sixth embodiment of the molded article take-out machine of the present invention, a side view thereof, and a perspective view including a deformed attachment. It is a figure which shows the use example of the 6th Embodiment. (A) and (B) show the states when the insert part to be inserted into the mold of the molding machine is received by the take-out head of the attachment attached to the tip of the entry frame and when the insert part is inserted into the mold. There is. (A) to (C) are a schematic perspective view, an enlarged perspective view of a main part, and a schematic perspective view of a usage example when the state of the molded product taken out by the take-out head of the attachment attached to the tip of the approach frame is inspected by the camera inspection unit. It is an enlarged perspective view of the main part which changed the viewing direction. (A) to (C) show a schematic perspective view, an enlarged perspective view of a main part, and a viewing direction of a usage example when the molded product M taken out by the take-out head of the attachment attached to the tip of the entry frame is separated by an external nipper. It is an enlarged perspective view of the changed main part. (A) and (B) are a schematic perspective view of a seventh embodiment and a perspective view of a main part centered on an attachment. (A) and (B) are schematic perspective views of the eighth embodiment in which the viewing direction is changed, respectively. (A) and (B) are enlarged perspective views of the main part of the eighth embodiment.

Hereinafter, embodiments of the molded article take-out machine of the present invention will be described in detail with reference to the accompanying drawings.

<First Embodiment>
<Structure of molded product take-out machine>
FIG. 1 is a diagram showing an overall configuration of a molded product take-out machine 1 according to the present embodiment. The molded product take-out machine 1 is a traverse-type molded product take-out machine, and the base is supported by a fixed platen of a molding machine (not shown). The molded product take-out machine 1 shown in FIG. 1 includes a traverse frame 3, a first traveling body 5, a drawing frame 7, a runner approach unit 8, and a molded product adsorption approach unit 9. The transverse frame 3 has a cantilever beam structure extending in the X-frame direction horizontally orthogonal to the longitudinal direction of the molding machine (not shown). The first traveling body 5 is supported by the traversing frame 3, and moves back and forth in the X-frame direction along the traversing frame 3 with the AC servomotor 11 included in the servo mechanism as a drive source. The drawing frame 7 is provided on the first traveling body 5 and extends in the Y frame direction parallel to the longitudinal direction of the molding machine. A runner approach unit 8 and a molded product suction approach unit 9 are supported on the pull-out frame 7 so as to be movable in the Y direction by using an AC servomotor 13 included in the servo mechanism as a drive source.

The runner approach unit 8 has a structure provided with an approach frame 19'that enters the traveling body 17'movably supported by the pull-out frame 7 in the Z direction. The traveling body 17'moves in the Y direction by rotationally driving the belt 15 by the AC servomotor 13. The approach frame 19'enters in the vertical direction (Z direction) by the drive source 18'. The approach frame 19'includes a chuck 6 as an attachment for holding the runner to be discarded.

Further, the traveling body 17 included in the molded product adsorption approach unit 9 moves in the Y direction on the drawing frame 7 by rotationally driving the belt 15 by the AC servomotor 13. The molded product adsorption approach unit 9 includes an approach frame 19 called an elevating frame that enters in the vertical direction (Z direction) by the drive source 18, and an inversion unit as an attitude control device that rotates around the frame line of the approach frame 19. 21 and a take-out head 23 provided in the reversing unit 21 are provided. In the present embodiment, the attachment 24 is composed of the reversing unit 21 and the take-out head 23. If the reversing unit 21 is not provided, the take-out head 23 constitutes the attachment 24. Further, in the present embodiment, the electromagnetic actuator 25 is attached to the reversing unit 21 of the attachment 24. An acceleration sensor 27 is attached to the mover of the electromagnetic actuator 25. Theoretically, the mounting position of the electromagnetic actuator 25 is not limited to the attachment 24, and it goes without saying that the electromagnetic actuator 25 may be mounted on the approach frame 19.

<Configuration of active vibration suppression device>
The molded product take-out machine 1 of the present embodiment includes the active vibration suppression device 31 shown in FIG. 2 in a control unit not shown in FIG. The active vibration suppression device 31 includes a displacement vibration detection unit 33, a phase correction unit 34, an electromagnetic actuator 25 mounted on the reversing unit 21 to suppress horizontal vibration of the attachment 24, and an additional vibration detection unit 35. And the drive signal generation unit 37 is provided. The electromagnetic actuator 25 can apply vibration to the attachment 24, and in particular, if it is an electromagnetic actuator, it can generate vibration with arbitrary power and arbitrary frequency. In this embodiment, an electromagnetic actuator manufactured by Sinfonia Technology Co., Ltd. under the product number of RM040-021 is used. In the present embodiment, since the attachment 24 is composed of the reversing unit 21 mounted on the approach frame 19 and the take-out head 23 mounted on the reversing unit 21, the electromagnetic actuator 25 is used as the reversing unit 21 as described above. I am wearing it. This is because the reversing unit 21 has a predetermined rigidity, so that vibration can be effectively suppressed. The electromagnetic actuator 25 is attached so that the vibration direction generated by the electromagnetic actuator 25 is in the horizontal direction (Y direction or X direction) in order to suppress vibration in the horizontal direction (Y direction or X direction). Then, in order to suppress the vibration in the vertical direction (Z direction), the electromagnetic actuator may be attached so that the vibration direction generated by the electromagnetic actuator is in the vertical direction (Z direction).

In the present embodiment, the displacement vibration detection unit 33 outputs the displacement vibration detection signal S1 including information on the displacement vibration frequency component proportional to the displacement vibration in the horizontal direction (Y direction) of the attachment 24. The displacement vibration includes a plurality of vibration frequency components based on the primary vibration, the secondary vibration, and the like generated by the operation of the approach frame 19 and the attachment 24. The vibration frequency component included in the displacement vibration changes depending on the structure of the belt-type or trolley-type transport mechanism provided between the AC servomotor 13 and the approach frame 19. In the present embodiment, the displacement vibration detection unit 33 moves the approach frame 19 in the horizontal direction (Y direction). In the servo mechanism, the motor current signal or the motor torque signal of the servomotor 13 or the motor current signal or the torque of the motor. A signal proportional to the signal is output as a displacement vibration detection signal proportional to the displacement vibration. The attachment 24 of the molded article take-out machine needs to enter between the two molds of the molding machine. Therefore, there is a limit to increasing the size of the attachment 24 equipped with the electromagnetic actuator 25, and there is almost no room for arranging a sensor for detecting the movement of the attachment 24 equipped with the electromagnetic actuator 25 near the mold of the molding machine. For this reason, even if the engineer thinks that active control is effective in suppressing the vibration of the attachment 24, active control has never been proposed for suppressing the vibration of the take-out head.

The inventor, who studied applying active control to a molded product take-out machine, placed a sensor on the attachment 24 to measure horizontal or vertical vibration, or placed the take-out head horizontally around the mold of the molding machine. A signal proportional to the motor current signal or motor torque signal or motor current signal or motor torque signal of the motor in the servo mechanism that moves the approach frame horizontally or vertically without arranging a sensor to measure vibration. It was found that the attachment 24 contains a displacement vibration frequency component proportional to the displacement vibration in the horizontal direction or the vertical direction.

Therefore, in the present embodiment, the displacement vibration detection unit 33 moves the approach frame 19 in the horizontal direction (Y direction) by the motor current signal of the servomotor 13 or the torque signal of the motor or the motor current signal or the motor. A signal proportional to the torque signal is detected as the displacement vibration detection signal S1. If the information on the displacement vibration frequency component is obtained from this signal S1, it is not necessary to provide a special sensor around the attachment 24 or the mold of the molding machine to detect the vibration in the horizontal direction (Y direction) of the attachment 24. .. As a result, it has become practically possible to introduce active control in the molded product take-out machine. In the present embodiment, in order to positively suppress the vibration of the approach frame 19 in the horizontal direction (Y direction), the displacement vibration detection unit 33 receives a motor current signal or a motor current signal from the output of the motor drive amplifier 12 of the servomotor 13. The torque signal is acquired. However, in order to suppress the vertical vibration of the approach frame 19, the electromagnetic actuator 25 is driven by acquiring a motor current signal or a torque signal from the output of the motor drive amplifier of the motor that moves the approach frame 19 in the vertical direction. Just do it. In this case, the mounting position of the electromagnetic actuator 25 may be changed so that the vibration generated by the electromagnetic actuator 25 faces in the vertical direction. As will be described later, the attachment 24 is provided with a first electromagnetic actuator that suppresses vibration in the Y direction, a second electromagnetic actuator that suppresses vibration in the X direction, and a third electromagnetic actuator that suppresses vibration in the Z direction. It can also be implemented.

FIG. 3A shows the vibration waveform A and the servomotor 13 in which the vibration state of the attachment 24 during the pull-out operation is measured by a laser displacement meter (a laser displacement meter sold by Keyence Co., Ltd. under the product name of IL-S100). It is a waveform diagram displayed so that it can be compared with the torque command waveform B of. By the way, the torque command waveform B is taken out from the torque command output terminal of the servo amplifier sold by Fuji Electric Co., Ltd. under the trade name of RYT201D5-LS2-Z25. Comparing the waveform A and the waveform B, it can be seen that the two waveforms A and B are in a proportional relationship when viewed from the peak value, although there is a phase shift. This is as shown in FIG. 3 (B). It was also confirmed from the plot results of the absolute value of the torque command waveform and the absolute value of the output of the laser displacement meter. It has been confirmed that this relationship also appears in the motor current signal of the motor. Focusing on the first peak and the second peak of both waveforms, it can be seen that both waveforms have a rise deviation (advance) of 0.03 to 0.04 seconds.

The phase correction unit 34 corrects the phase shift of the displacement vibration detection signal S1 output by the displacement vibration detection unit 33 based on the phase shift information obtained in advance, and generates the corrected displacement vibration detection signal S1'. A phase shift occurs between the displacement vibration detection signal S1 and the actual displacement vibration due to various factors such as the configuration of the displacement vibration detection unit 33. In the case of a molded product take-out machine, once the setting is made, the shape and weight of the attachment 24 and the molded product to be taken out do not change. Therefore, this phase shift can be obtained in advance by pre-measurement before starting the take-out operation. Therefore, in the present embodiment, the phase shift of the displacement vibration detection signal S1 is corrected by the phase shift information obtained in advance to generate the corrected displacement vibration detection signal S1', and the occurrence of oscillation based on the phase shift is prevented.

The additional vibration detection unit 35 detects the additional vibration in the horizontal direction (Y direction) generated by the electromagnetic actuator 25 itself, and outputs an additional vibration detection signal S2'including information on the additional vibration frequency component of the additional vibration. When the electromagnetic actuator 25 is operated using only the corrected displacement vibration detection signal S1'to perform the vibration damping operation, the horizontal additional vibration frequency component of the electromagnetic actuator 25 itself is included in the displacement vibration frequency component. .. However, if this additional vibration frequency component is not taken into consideration, vibration damping using the electromagnetic actuator 25 cannot be realized quickly and without oscillation. In the present embodiment, the accelerometer 27 mounted on the mover of the electromagnetic actuator 25 and detecting the acceleration of the mover is used as the additional vibration detection unit 35. Currently, as the acceleration sensor 27, for example, a semiconductor type acceleration sensor can be used. Semiconductor acceleration sensors with dimensions that can be attached to movers are on the market. In this embodiment, an acceleration sensor sold by Kionix, Inc. under the product name of KXR94-2050 is used.

The drive signal generation unit 37 vibrates the attachment 24 in the horizontal direction (Y direction) based on the displacement vibration frequency component included in the corrected displacement vibration detection signal S1'and the additional vibration frequency component included in the additional vibration detection signal. It generates a drive signal necessary for actively controlling the electromagnetic actuator 25 so as to suppress it. The vibration may not be suppressed only by the drive signal for driving the actuator generated based only on the displacement vibration detection signal S1 including the information of the displacement vibration frequency component. The reason is that the displacement vibration frequency component includes the additional vibration (additional vibration frequency component) generated due to the vibration of the actuator itself. Therefore, from the corrected displacement vibration detection signal S1 ′ in which the detection signal S1 including the information of the displacement vibration frequency component is phase-corrected, an oscillator of the electromagnetic actuator 25 that generates vibration for suppressing the vibration in the horizontal direction of the attachment 24 is added. The drive signal Sa generated by excluding the additional vibration detection signal S2'proportional to the speed obtained by integrating the acceleration signal S2 of the acceleration sensor 27 including the information of the additional vibration frequency component due to vibration is used. As a result, the damping of the additional vibration can be increased to prevent the oscillation, and the active control using the electromagnetic actuator 25 becomes more effective. As a result, the vibration of the attachment 24 can be reliably suppressed in a shorter time than before.

FIG. 4 is a diagram showing the configuration and process of generating the drive signal Sa of the electromagnetic actuator together with the waveform. As shown in FIG. 4, the drive signal generation unit 37 includes a first gain adjustment unit 37A, a second gain adjustment unit 37B, and a calculation unit 37C. The first gain adjusting unit 37A adjusts the gain of the corrected displacement vibration detection signal S1'output from the phase correction unit 34. The second gain adjusting unit 37B adjusts the gain of the additional vibration detection signal S2'output from the additional vibration detection unit 35. The first gain adjusting unit 37A and the second gain adjusting unit 37B adjust the difference in dimension and amplitude between the corrected displacement vibration detection signal S1'and the additional vibration detection signal S2' to enable calculation. Then, the calculation unit 37C performs gain-adjusted additional vibration from the gain-adjusted corrected displacement vibration detection signal S1'as a calculation for reducing or removing the influence of the additional vibration frequency component generated by the additional vibration of the actuator included in the displacement vibration frequency component. The operation for removing the detection signal S2'is executed. If the polarity of the output of the acceleration sensor 27 is negative, the calculation unit 37C will perform an addition calculation.

It is preferable that the active vibration suppression device 31 is always in the operating state when the molded product take-out machine is in the operating state. In this way, since the vibration of the attachment 24 is always suppressed, the molded product can be taken out without being deformed, and the molded product that has not been completely cured after being taken out by the take-out head can be prevented from being deformed. Further, if the active vibration suppressing device 31 is in an operating state at least when the attachment 24 is stopped in the mold of the molding machine, the active vibration suppressing device 31 can quickly and surely take out the molded product by the attachment 24.

Further, the active vibration suppression device 31 may be in an operating state when the attachment 24 is stopped at the molded product open position. By doing so, it is possible to prevent deformation of the molded product that has not yet been completely cured.

<Result of feedback control>
Hereinafter, the results of confirming the effect of feedback control in the active vibration suppression device used in the present embodiment will be described with reference to FIGS. 5 and 6. First, in FIG. 5, X0 shows the result when the active control is not performed, X1 shows the active control result using the output of the laser position sensor as the displacement vibration detection signal, and X2 shows the result of the present embodiment. The active control result using the corrected displacement vibration detection signal S1'corrected for the phase shift (advance) of 0.02 seconds by using the torque signal waveform S1 as the displacement vibration detection signal is shown. The settling time is the time from when the target position is reached until the vibration amplitude of the reversing unit 21 falls within ± 0.1 mm. From this result, it was confirmed that according to the present embodiment, the same vibration damping effect as when the laser displacement meter is used can be obtained.

FIG. 6 shows a test result obtained by adding the damping result X3 when the phase correction is not performed to the result of FIG. From these test results, it was confirmed that the settling time could be suppressed within 0.2 seconds by adding phase correction.

7 (A) and 7 (B) show a perspective view and a cross-sectional view of an example of the electromagnetic actuator 25'that can be used in the present embodiment. In this electromagnetic actuator 25', a mover 25'B is arranged at the center of a tubular stator 25'A, and the mover 25'B is supported by the stator 25'A by three leaf springs 25'C. Has a structure that has been modified. The operating range of the mover 25'B is regulated by the stopper 25'D. The electromagnetic actuator 25'operates on the same principle as a so-called cylindrical linear motor. Active control is performed by fixing the stator 25'A to the take-out head and transmitting the vibration of the mover 25'B to the stator 25'A. The acceleration sensor 27 described above is attached to the mover 25'B.

<Other examples of displacement vibration detector>
The displacement vibration detection unit 33 can be configured to output a displacement feedback signal of the servomotor 13 in the servo mechanism for moving the approach frame 19 or a signal proportional to the displacement feedback signal as a displacement vibration detection signal. The displacement feedback signal is obtained by integrating the "feedback speed" that can be obtained from off-the-shelf servo amplifiers. For example, p.M. of the user's manual of the servo amplifier sold by Fuji Electric Systems Co., Ltd. under the trademark of ALPHA5. In the state display block diagram shown in 14-2, it is shown that the "return speed" can be output.

FIG. 8 is a waveform diagram used to explain that the displacement feedback signal obtained by integrating the “feedback speed” is proportional to the motor torque. The waveform of FIG. 8 shows the output of the "feedback speed" of the servo amplifier ALPHA5 manufactured and sold by Fuji Electric Systems Co., Ltd., and the displacement feedback signal derived by adding the time advance compensation (40 ms) to the integration result. It is written side by side with the waveform of the motor torque of the servo motor driven by the amplifier. 40 ms of time advance compensation means that the phase of the integrated value is delayed by the advance time obtained from the preliminary measurement. As is clear from FIG. 8, since the displacement feedback signal has the same phase as the motor torque, the displacement feedback signal can also be used as the displacement vibration detection signal in the same manner as the motor torque described above.

<Other examples of additional vibration detector>
In the above embodiment, the acceleration sensor 27 is used as the additional vibration detection unit 35, but the additional vibration detection unit 35 can also be configured without using the acceleration sensor like the displacement vibration detection unit 33. That is, the additional vibration detection unit 35 detects a signal proportional to the counter electromotive force generated when a power proportional to the drive signal is input to the electromagnetic actuator, and outputs a signal proportional to the counter electromotive force as an additional vibration detection signal. It can be configured as follows. In the circuit of FIG. 9, in order to acquire a signal proportional to the counter electromotive force Er generated in the exciting coil W that excites the mover of the electromagnetic actuator 25, the voltage Es across the shunt resistance resistance value R1 through which the current i flows is used. This is an example of a circuit that utilizes the voltage Vo applied to the driver DV and the resistance value Ro of the exciting coil W. The voltage Es of the shunt resistor can be expressed as Es = R1 × i = R1 × (Vo-Er) / (R0 + R1) = R1 / (R0 + R1) × (Vo-Er) = k (Vo-Er). However, it is a known proportionality constant of k = R1 / (R0 + R1). From this equation, the counter electromotive force Er can be calculated as Er = Vo-Es / k.

FIG. 10 is a waveform diagram in which the component waveform of the counter electromotive force Er obtained by calculation and the acceleration integrated waveform (additional vibration detection signal) of the additional system detected by the acceleration sensor 27 are shown side by side. As can be seen from this figure, the component waveform of the counter electromotive force Er obtained by calculation and the acceleration integrated waveform (additional vibration detection signal) have the same phase. Therefore, a signal proportional to the counter electromotive force Er can be used as an additional vibration detection signal.

FIG. 11 is a diagram showing a configuration and a process of generating a drive signal Sa of an electromagnetic actuator using a counter electromotive force component waveform calculated using the output voltage of a shunt resistor as an additional vibration detection signal together with the waveform. As shown in FIG. 11, the drive signal generation unit 37 includes a first gain adjustment unit 37A, a second gain adjustment unit 37B, and a calculation unit 37C. The first gain adjusting unit 37A adjusts the gain of the corrected displacement vibration detection signal S1'output from the phase correction unit 34. The second gain adjusting unit 37B adjusts the gain of the additional vibration detection signal S2'output from the counter electromotive force calculation unit 36 constituting the additional vibration detection unit. The counter electromotive force calculation unit 36 calculates the counter electromotive force Er based on the above-mentioned equation of Er = Vo—Es / k. The first gain adjusting unit 37A and the second gain adjusting unit 37B adjust the difference in dimension and amplitude between the corrected displacement vibration detection signal S1'and the additional vibration detection signal S2' to enable calculation. Then, the calculation unit 37C performs a correction displacement vibration detection signal S1 composed of a gain-adjusted back electromotive force component waveform as a calculation for reducing or removing the influence of the additional vibration frequency component generated by the additional vibration of the actuator included in the displacement vibration frequency component. The operation of removing the additional vibration detection signal S2'in which the gain is adjusted from'is is executed. When the polarity of the back electromotive force component waveform is negative, the calculation unit 37C performs an addition calculation.

<Operating period>
The active vibration suppression device 31 is used from before the molded product is taken out from the mold or before the insert component is inserted into the mold by using the attachment 24 provided in the entry frame 19 until the molded product is opened at the molded product open position. It is preferable to perform active control during the period. In this way, not only the take-out of the molded product and the insertion of the insert component are speeded up, but also the deformation of the molded product due to the vibration applied before curing can be effectively prevented.

Further, the active vibration suppression device 31 may be in an operating state when the attachment 24 is stopped at the molded product open position RP as shown in FIG. By doing so, it is possible to prevent deformation of the molded product that has not yet been completely cured. Then, the molded product open position RP may be provided with a displacement sensor 26 that detects the transverse displacement vibration when the attachment 24 is displaced and vibrated in the transverse direction orthogonal to the horizontal direction and the vertical direction. In this case, the active vibration suppression device 31 is configured to further mount an actuator (not shown) that suppresses transverse displacement vibration based on the output of the displacement sensor 26 on the attachment 24 to perform active control. In this way, most of the vibration applied to the molded product when the molded product is opened can be suppressed.

<Second Embodiment>
13 (A) to 13 (D) are a schematic perspective view of a second embodiment of the molded article take-out machine of the present invention, a perspective view of a main part centering on an attachment, a side view thereof, and a perspective view of a deformed attachment. It is a figure. In FIGS. 13 (A) to 13 (D), the same components as those of the molded product take-out machine according to the first embodiment shown in FIG. 1 are designated by the same reference numerals as those shown in FIG. The explanation will be omitted. The second embodiment differs from the first embodiment in that the reversing unit 21 as the attitude control device is provided with a storage unit 21A for storing the electromagnetic actuator 25, and the storage unit 21A is electromagnetically provided. The acceleration sensor 28 is mounted on the reversing unit 21 as a displacement vibration detection unit that outputs a displacement vibration detection signal including information on a displacement vibration frequency component proportional to the displacement vibration of the attachment 24 and the point where the actuator 25 is housed. It is a point. The reversing unit 21 is equipped with a take-out head attachment 22 that can rotate 90 ° between the first position and the second position. When the take-out head attachment 22 is in the first position as shown in FIGS. 13A to 13C, the take-out head 23 extends along the approach frame 19, and the take-out head attachment 22 is shown in FIG. When in the second position as shown in 13 (D), the take-out head 23 extends in a direction orthogonal to the direction in which the approach frame 19 extends. If the reversing unit 21 as an attitude control device has a storage portion 21A, it is possible to prevent the electromagnetic actuator 25 from unnecessarily interfering with surrounding parts.

14 (A) to 14 (C) center on the attachment 24 of the embodiment using the rotary reversing unit 21'that can rotate about the frame line of the approach frame as the attitude control device of the attachment 24. It is a perspective view of the main part, a side view thereof, and a perspective view of a deformed attachment. In this example as well, the rotary reversing unit 21'is provided with a storage unit 21'A for storing the electromagnetic actuator 25, and the storage unit 21'A stores the electromagnetic actuator 25.

<Third embodiment>
15 (A) to 15 (D) are a schematic perspective view of a third embodiment of the molded article take-out machine of the present invention, a perspective view of a main part centering on an attachment, a side view thereof, and a perspective view of a deformed attachment. It is a figure. In FIGS. 15 (A) to 15 (D), the same components as those of the molded product take-out machine of the first embodiment shown in FIG. 1 are designated by the same reference numerals as those shown in FIG. The explanation will be omitted. The third embodiment differs from the first embodiment in that the electromagnetic actuator 25 is attached to the take-out head attachment 22 provided in the reversing unit 21 as the attitude control device, and the attachment. The point is that the acceleration sensor 28 is mounted on the reversing unit 21 as a displacement vibration detection unit that outputs a displacement vibration detection signal including information on a displacement vibration frequency component proportional to the displacement vibration of 24. When the take-out head attachment 22 is in the first position as shown in FIGS. 15A to 15C, the take-out head 23 extends along the approach frame 19 and the electromagnetic actuator 25 is a reversing unit (attitude). When the take-out head fixture 22 is located below the control device) 21 and is in the second position as shown in FIG. 15 (D), the take-out head 23 is orthogonal to the direction in which the approach frame 19 extends. It has a structure that extends in the direction and the electromagnetic actuator 25 is located on the side of the reversing unit (attitude control device) 21. When the take-out head attachment 22 is used, when the take-out head 23 enters between a pair of molds of the molding machine, the electromagnetic actuator 25 is located under the reversing unit 21, so that the electromagnetic actuator 25 collides with the mold. There is no. Further, as shown in FIG. 15 (D), when the take-out head 23 goes out of the pair of molds and is in the second position, the molded product is released from the take-out head 23. Even at this time, if the electromagnetic actuator 25 is operated to perform active control, the displacement vibration of the take-out head 23 can be suppressed.

<Fourth Embodiment>
16 (A) to 16 (D) are a schematic perspective view of a fourth embodiment of the molded article take-out machine of the present invention, a perspective view of a main part centering on an attachment, a side view thereof, and a perspective view of a deformed attachment. It is a figure. In FIGS. 16A to 16D, the same components as those of the molded article take-out machine according to the first embodiment shown in FIG. 1 are designated by the same reference numerals as those shown in FIG. The explanation will be omitted. The fourth embodiment differs from the first embodiment in that the electromagnetic actuator 25 is attached to the outer periphery of the tip of the approach frame 19 so as to be located near the attachment 24, and the attachment 24 The point is that the acceleration sensor 28 is mounted on the reversing unit 21 as a displacement vibration detection unit that outputs a displacement vibration detection signal including information on a displacement vibration frequency component proportional to the displacement vibration. The tip of the entry frame 19 usually does not enter between a pair of molds of a molding machine. Therefore, if the electromagnetic actuator 25 is arranged on the outer periphery of the tip of the approach frame, vibration for suppressing displacement vibration can be efficiently applied to the attachment 24 in the vicinity.

<Fifth Embodiment>
17 (A) to 17 (C) are a schematic perspective view of a fifth embodiment of the molded article take-out machine of the present invention, a perspective view of a main part centering on an attachment, and a side view thereof. In FIGS. 17 (A) to 17 (C), the same components as those of the molded product take-out machine of the first embodiment shown in FIG. 1 are designated by the same reference numerals as those shown in FIG. The explanation will be omitted. The fifth embodiment differs from the first embodiment in that the electromagnetic actuator 25 is attached to the portion of the approach frame 19 located closer to the attachment 24 than the traveling body 17, and the attachment 24 The point is that the acceleration sensor 28 is mounted on the reversing unit 21 as a displacement vibration detection unit that outputs a displacement vibration detection signal including information on a displacement vibration frequency component proportional to the displacement vibration of the above. Even in this way, vibration for suppressing displacement vibration can be applied to the attachment 24 via the approach frame 19.

<Difference in active control due to difference in mounting position of electromagnetic actuator>
18 and 19 show test results for confirming what kind of difference occurs in active control due to the difference in the mounting position of the electromagnetic actuator 25 in the second to fifth embodiments. ing. In these tests, the vibration state of the actuator during the pull-out operation was measured with a laser displacement meter. In FIGS. 18 and 19, the data indicated by the reference numerals 2 to 5 are the test data of the second embodiment to the fifth embodiment. FIG. 18 shows the damping of the displacement vibration of the attachment 24 when the active control is not performed, and FIG. 19 shows the damping of the displacement vibration of the attachment 24 when the active control is performed. As can be seen by comparing FIG. 18 and FIG. 19, when active control is performed, the amplitude of the displacement vibration is ± 0 in 0.2 seconds after reaching the target position (0.0 mm) in any of the embodiments. It can be seen that the damping is within 1 mm.

From this test result, it was confirmed that the lower the position of the electromagnetic actuator, the larger the initial vibration, and therefore the larger the amplitude of the vibration, but in any case, the amplitude of the displacement vibration is attenuated at an early stage.

<Sixth Embodiment>
20 (A) to 20 (C) are a perspective view of a main part centering on the attachment of the sixth embodiment of the molded article take-out machine of the present invention, a side view thereof, and a perspective view including a deformed attachment. .. In FIGS. 20 (A) to 20 (C), the same components as those of the molded product take-out machine according to the third embodiment shown in FIG. 15 are designated by the same reference numerals as those shown in FIG. The explanation will be omitted. The sixth embodiment differs from the third embodiment in the take-out head attachment 22 that can rotate 90 ° between the first position and the second position, and the take-out head 23. A fixed L-shaped mounting plate 20 is mounted, three electromagnetic actuators 25X, 25Y and 25Z are mounted on the mounting plate 20, and acceleration sensors 27X and 27Y are mounted on the three electromagnetic actuators 25X, 25Y and 25Z, respectively. And 27Z are installed. The three electromagnetic actuators 25X to 25Z are orthogonal to the Z direction and the Z direction in which the approach frame 19 enters, and the Y direction, the Z direction and the Y direction are the directions in which the attachment approaches or leaves the molded product in the mold. When the direction orthogonal to the X direction is defined as the X direction, the first electromagnetic actuator 25Y that suppresses the displacement vibration in the Y direction, the second electromagnetic actuator 25X that suppresses the displacement vibration in the X direction, and the displacement vibration in the Z direction. This is a third electromagnetic actuator 25Z that suppresses If the first to third electromagnetic actuators 25X to 25Z are provided, the approach frame 19 always performs active control regardless of the path it moves and the position where it stops. Will be possible. The state shown in FIG. 20C shows a state in which the take-out head 23 is in a horizontal state.

FIG. 21 shows a usage example of the sixth embodiment. This usage example is an example in which the molded product M taken out by the take-out head 23 is inserted into the product storage recess R in the pallet P placed in the product open position. As the product storage recess R becomes smaller, when the take-out head 23 vibrates when the molded product M is inserted, the molded product M is in a state of rubbing against the inner wall of the product storage recess R. As a result, the surface of the molded product may be damaged, and in some cases, a part of the molded product may be deformed or damaged. Since vibrations in the X, Y, and Z directions can be suppressed by active control as in the present embodiment, it is possible to insert the molded product into the predetermined product storage recess R in a shorter time than before. Become.

22 (A) and 22 (B) show the insertion component IW to be inserted into the mold of the molding machine to the take-out head 23 of the attachment 24 attached to the tip of the entry frame, and the insert component to be inserted into the mold. Indicates the state of. The insert part IW is inserted into the mold of the molding machine, and the molding machine insert-molds the molded product so as to include the insert part IW inside. Then, after molding, the molded product take-out machine takes out the insert-molded molded product. As shown in FIG. 22 (A), when the insert component IW is taken out, the insert component IW is received while inserting the guide pin GP mounted on the take-out head into the positioning pin PP provided in the component storage portion. Become. Further, as shown in FIG. 22B, when the insert component IW is inserted into the mold MD, the guide pin GP is inserted into the guide hole GH provided in the mold MD to position and insert the insert component IW at a predetermined position. In such a case, if the take-out head 23 is vibrating, it takes time to take out and insert the insert component IW. However, if the first to third electromagnetic actuators 25X to 25Z are provided as in the present embodiment, the vibration of the take-out head 23 can be suppressed by active control at an early stage, so that the insert parts can be taken out and inserted. The insertion time can be made faster than before.

23 (A) to 23 (C) are schematic perspective views of an example of use when the state of the molded product M taken out by the take-out head 23 of the attachment 24 attached to the tip of the approach frame is inspected by the camera inspection unit CU. It is the enlarged perspective view of the part and the enlarged perspective view of the main part which changed the viewing direction. In this example, in the camera inspection unit CU, three actuators AY, AX and AZ are mounted around the tip base B of the frame F to which the camera CM is attached. Then, the vibration of the frame of the tip base B of the frame F in three directions is suppressed by active control by three actuators AY, AX and AZ. Therefore, according to this usage example, after taking out the molded product, on the way to the molded product open position, the molded product is photographed and the molded product is inspected without substantially stopping the movement of the approach frame. can do.

24 (A) to 24 (C) are a schematic perspective view and an enlarged perspective view of a main part of a usage example in which the molded product M taken out by the take-out head 23 of the attachment 24 attached to the tip of the approach frame is separated by an external nipper. It is an enlarged perspective view of a main part in which the viewing direction is changed. In this example, an external nipper unit NU is mounted on the tip of the traverse frame 3 via the support frame SF. In the external nipper unit NU, three actuators AY, AX and AZ are mounted on the frame structure FC to which the nippers are attached. Then, the vibration of the XYZ frame of the frame structure FC in the three frame directions is suppressed by active control by the three actuators AY, AX and AZ. Therefore, according to this usage example, when the molded product M is cut by the nippers of the external nipper unit NU at the molded product open position after the molded product is taken out, both the vibration of the molded product and the vibration of the external nipper unit NU are performed. Since the cutting work can be performed in a state where the above is suppressed, the cutting work time can be shortened as compared with the conventional case.

<7th Embodiment>
25 (A) and 25 (B) are a schematic perspective view of the seventh embodiment and a perspective view of a main part centered on the attachment 24'. In the present embodiment, another approach frame is provided with a chuck 6 as an attachment 24'for gripping a discarded portion of the molded product taken out by using the approach frame in the approach frame 19 used for taking out the molded product from the mold of the molding machine. An electromagnetic actuator 25'is also attached to 19'. According to this embodiment, the vibration of the chuck can be suppressed at an early stage, so that the chuck operation can be performed quickly.

<Eighth Embodiment>
26 (A) and 26 (B) are schematic perspective views of the eighth embodiment in different viewing directions, respectively, and FIGS. 27 (A) and 27 (B) are the main parts of the eighth embodiment. It is an enlarged perspective view of. In FIGS. 26 (A) and 26 (B) and 27 (A) and 27 (B), the components similar to the components of the molded product take-out machine of the first embodiment shown in FIG. 1 are shown in FIG. The same code as the code attached to 1 is attached. This embodiment, ingress frame 19 advancing the attachment 24 in the interior of the mold of a molding machine (not shown) to move in a horizontal direction, a molded product removing machine of the so-called side entry type. The eighth embodiment differs from the first embodiment in that there is no traversing frame, and the approach frame 19 movably supported by the traveling body 17 movably mounted on the pull-out frame 7 is horizontal. It is a point that moves in the direction (Y direction). Also in this embodiment, the electromagnetic actuator 25 is attached to the take-out head attachment 22 included in the reversing unit 21 of the attachment 24. Then, the displacement vibration detection unit that outputs the displacement vibration detection signal including the information of the displacement vibration frequency component proportional to the displacement vibration of the attachment 24 sets the approach frame 19 in the horizontal direction (Y direction) as in the first embodiment. A displacement vibration detection signal is detected as a motor current signal of the servo motor 13 or a torque signal of the motor or a signal proportional to the motor current signal or the torque signal of the motor in the servo mechanism to be moved to. Even when the approach frame 19 is entered into the mold of the molding machine from the horizontal direction (horizontal direction) as in the present embodiment, if the electromagnetic actuator 25 is operated to perform active control, the displacement vibration of the take-out head 23 is performed. Can be suppressed.

<Modification example>
In the sixth embodiment, three electromagnetic actuators are mounted to suppress vibration in the XYZ direction, but the present invention is to suppress vibration in the direction most affecting the deformation of the molded product. If active control is adopted, it is not an essential requirement to apply active control to suppress vibration in three directions.

According to the present invention, in a molded product take-out machine, a molded product take-out machine capable of suppressing displacement vibration of attachments attached to the tips of one or more approach frames by active control using one or more electromagnetic actuators. Can be provided.

1 Molded product take-out machine 3 Traverse frame 5 Traveling body 6 Nipper 7 Pulling frame 8 Runner approach unit 9 Molded product suction approach unit 11 AC servo motor 12 Motor drive amplifier 13 AC servo motor 15 Belt 17, 17'Traveling body 18 Drive source 19, 19'Intrusion frame 21 Inversion unit 23 Extraction head 25, 25X, 25Y, 25Z Electromagnetic actuator 26 Displacement sensor 27, 27X, 27Y, 27Z Acceleration sensor 28 Acceleration sensor 31 Active vibration suppression device 33 Displacement vibration detection unit 34 Phase Correction part 35 Additional vibration detection part 37 Drive signal generation part W Excitation coil DV driver RP Molded product open position M Molded product R Product storage recess IW insert parts GP guide pin PP pin MD type GH guide hole CU camera inspection unit CM camera F frame B Tip base AX, AY, AZ Actuator NU External nipper unit SF Support frame FC frame structure

Claims (22)

An attachment is provided at the tip of each of one or more entry frames controlled by a positioning servo mechanism that uses one motor.
It is provided with an active vibration suppression device that performs active control to suppress the displacement vibration of the attachment in addition to the attachment attached to the one or more approach frames from one or more actuators to the vibration of the opposite phase to the displacement vibration of the attachment. It is a molded product take-out machine that takes out the molded product from the mold of the molding machine .
The one or more actuators consist of one or more electromagnetic actuators.
Wherein Ri each of the one or more electromagnetic actuators are mounted to the up for each of the attachment or the one or more ingress frames of the one or more ingress frame so as not to collide with the mold of a molding machine,
The one or more electromagnetic actuators have a Z direction in which the approach frame enters, an orthogonal direction to the Z direction, and a Y direction in which the attachment approaches or leaves the molded product in the mold. A molded product take-out machine comprising a first electromagnetic actuator that suppresses at least the displacement vibration in the Y direction when the Z direction and the direction orthogonal to the Y direction are defined as the X direction . The one or more entry frames are a first entry frame with the attachment used to remove a molded product from the mold of the molding machine or to which an insert component to be inserted into the mold is mounted, and the first entry frame. The molded product take-out machine according to claim 1, which includes a second entry frame provided with the attachment used for separating the discarded portion from the molded product taken out using the entry frame of 1. The one or more electromagnetic actuators, prior Symbol molded product removing machine according to claim 1 or 2 includes a second electromagnetic actuator suppresses the displacement vibration of the X-direction. The one or more electromagnetic actuators, prior Symbol molded product removing machine according to claim 1 or 2 includes a third electromagnetic actuator suppresses the displacement vibration in the Z-direction. The attachment includes an attitude control device with a take-out head.
The molded product take-out machine according to any one of claims 1 to 4 , wherein the one or more electromagnetic actuators are mounted on the attitude control device. The attachment includes an attitude control device with a take-out head.
The molded product take-out machine according to any one of claims 1 to 4 , wherein the one or more electromagnetic actuators are mounted on the take-out head. The molded product taking out according to claim 5 , wherein a storage portion for storing the one or more electromagnetic actuators is provided in the housing of the attitude control device, and the one or more electromagnetic actuators are stored in the storage portion. Machine. Wherein when ejecting a molded article from the molding machine, as the one or more electromagnetic actuators outside the bottom of the housing of the posture control device is located, according to the one or more electromagnetic actuators is mounted to the housing Item 5. The molded product take-out machine according to Item 5 . Forming one of said electromagnetic actuator according to claim 1 attached to the respective distal end outer periphery of the one or more ingress frame so as to be located in the vicinity of the attachment attached to each of the one or more ingress frame Product take-out machine. The one or more of the attachment attached to one of the ingress frame has a take-out head is mounted structure attitude control device,
On the outside of the housing of the attitude control device, a take-out head attachment that can rotate between the first position and the second position is mounted.
When the take-out head attachment is in the first position, the take-out head extends along the approach frame and one or more electromagnetic actuators are located below the attitude control device. When the take-out head attachment is in the second position, the take-out head extends in a direction orthogonal to the direction in which the approach frame extends, and one or more electromagnetic actuators are located on the side of the attitude control device. The molded product take-out machine according to claim 1, wherein the machine is used. The active vibration suppression apparatus, before the insert part is inserted into the one or more previous retrieving the molded article by using the attachment attached to one of the ingress frame from the mold or inside the mold, the molding The molded product take-out machine according to claim 1, wherein the active control is performed until the product is released at the molded product open position. Motors of the servo mechanism for moving the one or more ingress frame consists AC servomotor,
The molded product take-out machine according to claim 1, wherein a belt-type, rope-type, or trolley-type transfer mechanism is provided between the AC servomotor and each of the one or more approach frames. The active vibration suppression device is
A displacement vibration detection unit that outputs a displacement vibration detection signal proportional to the displacement vibration of the attachment,
An additional vibration detection unit that outputs an additional vibration detection signal proportional to the additional vibration generated by the one or more electromagnetic actuators themselves.
A drive signal generator that generates a drive signal necessary for actively controlling one or more electromagnetic actuators so as to suppress the displacement vibration of the attachment based on the displacement vibration detection signal and the additional vibration detection signal. taking out a molded product machine according to claim 1 which comprises a. The displacement vibration detection unit, said signal proportional to the motor current signal or torque signal or the motor current signal or torque signal of the motor of the motor of motors in the servo mechanism for moving the ingress frame displacement vibration The molded product take-out machine according to claim 13 , wherein the motor is configured to output as a detection signal. The displacement vibration detection unit is configured to output a displacement feedback signal of the motor in the servo mechanism for moving the approach frame or a signal proportional to the displacement feedback signal as the displacement vibration detection signal. The molded product extraction machine according to claim 13 . The molded product take-out machine according to claim 13 , wherein the additional vibration detection unit is configured to output the additional vibration detection signal without using a sensor. The additional vibration detection unit detects the counter electromotive force generated when a power proportional to the drive signal is input to the electromagnetic actuator, and outputs a signal proportional to the counter electromotive force as an additional vibration detection signal. The molded product take-out machine according to claim 16 , further comprising a coil. The molded product take-out machine according to claim 13 , wherein the additional vibration detection unit includes an acceleration sensor mounted on a mover of the electromagnetic actuator to detect the acceleration of the mover. A phase correction unit for generating a corrected displacement vibration detection signal by correcting the phase shift of the displacement vibration detection signal output by the displacement vibration detection unit based on the phase shift information obtained in advance is further provided.
The drive signal generation unit is based on the phase-corrected displacement vibration frequency component included in the corrected displacement vibration detection signal and the additional vibration frequency component included in the additional vibration detection signal.
The molded product take-out machine according to claim 13 , which is configured to generate the drive signal so as to suppress the displacement vibration of the electromagnetic actuator. The drive signal generation unit adjusts the gain of the corrected displacement vibration detection signal and the gain of the additional vibration detection signal, and then the additional vibration generated by the additional vibration of the electromagnetic actuator included in the displacement vibration frequency component. The molded product take-out machine according to claim 19 , wherein an operation for reducing or eliminating the influence of a frequency component is performed. The molded product take-out machine according to claim 20 , wherein the additional vibration frequency component is a frequency component of the speed of the additional vibration. A displacement sensor is provided near the open position of the molded product to detect the transverse displacement vibration when the attachment is displaced and vibrated in the X direction.
The molded product take-out machine according to claim 3 , wherein the active vibration suppression device is configured to suppress the transverse displacement vibration by using the second electromagnetic actuator based on the output of the displacement sensor.

Images