JPS62290512A - Molded form unloading device - Google Patents

Abstract

PURPOSE:To shorten a time for unloading a molded form or replacing a mold, by a method wherein the moving mechanism of a movable platen which supports one of the mold is provided with the unloading means of the molded form while the moving mechanism is controlled in accordance with the detecting output of the amount of mold opening. CONSTITUTION:When molding is finished, a pair of molds 13, 14 is opened and the opening motion is detected by a magnetic scale 24 and a magnetic head 70. Then, the position of a movable platen 12 is inputted into a controller through a position control unit and an unloading plate 22 is inserted by a pulse motor by an amount in accordance with a gap between the molds 13, 14. Then, the molded form 23 is projected by a projecting pin 75 and is pushed against suckers 52. The unloading plate 22, held by the suckers 52, is moved to an unloading direction by a moving mechanism 21. The molds 13, 14 are closed in synchronized with the unloading motion. In this case, the unloading device is attached to the movable platen 12 through a bracket 20, therefore, dismantling or complicated adjustment of the unloading device is not necessitated upon replacing the molds.

Description

[Detailed description of the invention]

3. Field of Industrial Application for Detailed Description of the Invention The present invention relates to a device for taking out a molded product, and in particular, the present invention relates to a device for taking out a molded product, and in particular, it relates to a molded product take-out device, and in particular, to a molded product taking out device, it is possible to take out a molded product.
0sl-Thoroughly ^L-1. Summary of the Invention The present invention uses a moving mechanism consisting of a linear pulse motor integrated with a guide rail and a detection means such as a magnetic scale to open and close a mold. This invention relates to a molded product take-out device that synchronizes the operation of a take-out plate for taking out the molded product so that the injection molded product can be taken out in a short time.

[Conventional technology]

Generally, when molding machine parts made of synthetic resin moldings by injection molding, a mold that can be opened and closed is closed, and molten synthetic resin is injected into the cavity of this mold. . The molded product molded by this method is then taken out from the cavity after the mold is opened. By automatically performing such unloading of the molded product, it becomes possible to achieve unmanned molding. Therefore, attempts have been made to attach ejecting means such as robots to the molding apparatus. Such robots automatically take out the molded product in synchronization with the opening and closing of the mold. Problem to be solved by the K invention 1 However, the conventional molded product take-out device has a mechanical structure using links, cams, racks, binions, etc., and has the following drawbacks. There is. In other words, large mechanical parts such as cams, links, racks,
Since pinions and the like are installed around the mold of the molding machine, it is necessary to remove at least some of these parts each time the mold is installed or removed. Furthermore, since the mechanical operation is performed, when inspecting the inner surface of the mold with the mold open, the take-out plate will enter the mold. Therefore, in order to prevent the take-out plate from entering the mold, a complicated additional mechanism was required to release the synchronization. Furthermore, according to conventional mechanical molded product ejecting devices, adjustment of the advance limit position of the ejecting plate due to changes in the thickness of the mold, the dimensions when the mold is opened, or the thickness of the molded product may take a long time in some cases. The drawback was that it required time-consuming work. Rough adjustment for centering the mold and the take-out plate requires work at a height above the molding machine, which is not only dangerous but also requires delicate adjustment work. For these reasons, synchronous take-out devices are not common today, and in general, independently controlled take-out robots are used that operate after detecting that the mold is completely opened. ing. The present invention has been made in view of these problems, and is designed to take out a molded product formed by a method such as injection molding from a mold in a minimum amount of time. The object of the present invention is to provide a synchronous take-out device. Means for Solving Problem K] The present invention provides a device for automatically taking out a molded product molded by a molding device having an openable and closable mold, in which a moving mechanism is provided to a movable platen supporting one of the molds. At the same time, the moving mechanism is provided with a take-out means for taking out the molded product, and further provided with a detection means for detecting an open hole in the mold,
The moving mechanism is controlled by the control means in accordance with the detection output of the detection means.

[Effect]

Therefore, according to the present invention, the ejecting means is attached to the movable platen via the moving mechanism, and there is no need to disassemble the ejecting means or the moving mechanism when replacing the mold. Furthermore, when inspecting the inside of the mold with the mold open, it is sufficient to simply set the control means to manual mode, which eliminates the need for a complicated mechanism for releasing the synchronization configuration as in the case of mechanical systems. It disappears. Furthermore, adjustment of the advance limit position of the ejection plate due to changes in mold thickness, molded part thickness, or mold opening dimensions can be achieved by adjusting the horizontal longitudinal adjustment screw and control means, and is generally It becomes possible to easily perform the same playback teaching work as a robot. Also, the gold price and the power output are 11 digits::':kawa 1
．． It can be easily done by hand nog work.Furthermore, since large mechanical parts such as links are not required, the size of the moving mechanism especially in standby state can be reduced. [Embodiment K] The present invention will be explained below with reference to an embodiment shown in the drawings. Fig. 1 shows a molding apparatus equipped with a device for taking out a molded product. The device comprises a fixed platen 11 and a movable platen 12. These platens 11.1
2 are arranged to face each other, and each includes a stationary mold 13 and a movable mold 14. The movable platen 12 is movably supported by the fixed platen 11 by a guide rod 15. Further, an opening 16 is formed in the fixed platen 11, and this opening 16
A cylinder 17 for taking out is arranged so as to face the cylinder. The movable platen 12 has a bracket 20 on its front side.
A moving mechanism 21 is supported by the bracket 20, and a take-out plate 22 is movably supported by the moving mechanism 21. This take-out plate 22 automatically takes out the molded product 23 from the movable mold 14. Further, a magnetic scale 24 for detecting movement of the movable platen 12 is arranged on the front side of the molding apparatus. The moving mechanism 21 is provided with an adjustment screw 25 for roughly adjusting the movement of the moving mechanism 21 in the horizontal direction. Next, the moving mechanism 21 will be explained with reference to FIGS. 2 and 3. This moving mechanism is composed of four linear pulse motors 31, 32, 33, and 34. A stator 35 of the first motor 31 is fixed to the take-out plate 22. The stator 35 of the first motor 31 is
As shown in the figure, guide members 36 are provided on the upper and lower sides, and a slider 38 is movably supported by a bearing 37. The stator 35 also includes a drive unit 39 having a coil and a magnet, and is arranged to face the scale 40 of the slider 38. This slider 38 is fixed to a slider 41 of the second motor 32. Note that the second motor 32 also has the same structure as the first motor 31, as shown in FIG.
The slider 41 faces a stator 43 supported by a connecting plate 42. A third motor 33 is provided at the lower end of the connecting plate 42, and its stator 44 is supported by the connecting plate 42. The slider 45 is movable relative to the stator 44.
is provided. The slider 45 is coupled to a slider 46 of the fourth motor 34, and this slider 46 is movably supported by a stator 47. This stator 47 is supported by the bracket 20 via a support plate 48. Therefore, the moving mechanism using four linear pulse motors 31 to 34 has a total length equal to the length of one slider when contracted, and when in operation, one motor is used based on the support plate 48. This allows for a V-shape with a stroke four times that of the slider of the slider. For installation, suction cups 52 are supported via members 51. In this embodiment, two suction cups 52 are provided for each molded product 23. The suction cups 52 are connected to vacuum piping 53. At the same time, this vacuum piping 53 is roughly connected to a manifold 54. This manifold 54 is then connected to a thick vacuum piping 55. This vacuum piping 55 is shown in FIG. A vacuum switch 57 and a vacuum gauge 58 are further connected between the ejector 56 and the suction cup 52. Also, between the ejector 56 and the pressure source 59, Filter 6 in order from the pressure source 59 side
0, a regulator 61, a pressure gauge 62, a mist separator 63, and a solenoid valve 54 are connected in this order. Further, an exhaust silencer 65 is connected to the exit side of the ejector 56. Compressed air from a pressure source 59 is supplied to the ejector 56, and a vacuum is generated in the ejector 56, which causes the suction cup 52 to be sucked. It will generate power. Therefore, this suction cup 52 attracts and holds the injection molded product 23. Next, the control circuit of the take-out device of this molding apparatus will be explained. As shown in FIG. 6, a magnetic head 70 for reading the values of the magnetic scale 24 is connected to a position control device 68. This position control device 68 is controlled by the host controller 67 and also controls six controllers. The controller 69 is configured to control the linear pulse motors 31 to 34 via pulse motor drive circuits 71 to 74, respectively. Next, the operation of this molded product removal device will be explained with reference to FIGS. 7 to 11. The moving mechanism 21 is a take-out plate 22
is moved to the position shown by the chain line in FIG. 7, and the discharge 4 is activated to remove the molded product taken out in the previous cycle, and the moving mechanism 21 is moved from the discharge position shown by the chain line to the original position shown by the solid line. Wait at this position. Note that at this point, the movable platen 12 has been moved to the fixed platen 11 side,
The pair of molds 13 and 14 are closed to perform molding. When molding is completed by the molds 13.14, the movable platen 12 is moved in a direction away from the fixed platen 11, and the pair of molds 13.14
will be opened. This opening operation of the molds 13 and 14 is detected by the magnetic scale 24 and magnetic head 70 shown in FIG. Become. Accordingly, the controller 69 uses the four pulse motors 31 to 34 to move the take-out plate 22 into the molds 13, 14 according to the gap between the pair of molds 13, 14, as shown in FIG. The take-out plate 22 completes its advancing operation at the position shown in FIG. When the take-out plate 22 enters to a predetermined depth, the mold 14
As shown in FIG.
This pin 75 presses the molded product 23 against the suction cup 52. Moreover, 52 suckers
As shown in FIG. 5, the suction cup 52 holds the molded product 23 because the suction force is generated by the vacuum pressure generated in the ejector 56 by compressed air from the pressure source 59. Then, as shown in FIG.
It will be moved by 1. The molded article 23 is thus removed from the mold 13.14. Note that the molds 13 and 14 are closed in synchronization with this operation of taking out the molded product 23, and are prepared for the next cycle of injection molding. According to such a device for taking out the molded product 23, since the taking out operation is performed in synchronization with the opening operation of the mold 13, 14, it is possible to minimize the time for taking out the molded product 23, and this is possible. This will improve productivity. In addition, the take-out device is connected to the movable platen 1 via the bracket 20.
2, it is no longer necessary to disassemble the ejection device or make complex adjustments when changing the molds 13, 14. Furthermore, even if the thickness of the mold 13.14, the thickness of the molded product, or the dimensions at which the mold 13.14 is opened change, the position of the take-out plate 22 can be easily adjusted using the teaching playback method. Become. Furthermore, the alignment of the molds 13, 14 and the take-out plate 22 can also be easily performed using the teaching brake pack. In addition, the length of the moving mechanism 21 during contraction is one linear motor 31 to 34.
Since the length of the slider is equal to the length of the slider, it is possible to make the take-out device compact. Furthermore, since the take-out device is attached to the movable platen 12, the present invention has an effect on a horizontal movement mechanism such as a synchronous robot of the type attached to the fixed platen 11. As described above, the present invention supports one mold. At the same time, a moving mechanism is attached to the movable platen, and a take-out means for taking out the molded product is installed on this moving mechanism.A detecting means for detecting the opening amount of the mold is also installed, and the control means controls the movement according to the detection output of this detecting means. The moving mechanism is controlled. Therefore, according to such a configuration, it is possible to shorten the time for taking out the molded product and improve productivity. Further, there is no need to disassemble the moving mechanism when replacing the mold, and furthermore, there is no need for a complicated mechanism for releasing the synchronization mechanism when opening the mold and inspecting the inside thereof.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a molding device having a molded product ejecting device according to an embodiment of the present invention, Fig. 2 is an external perspective view showing an ejecting plate and its moving mechanism, and Fig. 3 is a main part of the moving mechanism. 4 is an external perspective view showing the vacuum suction mechanism of the extraction plate, FIG. 5 is a circuit diagram of the same vacuum circuit, FIG. 6 is a block diagram showing the control circuit of the extraction device, and FIGS. 11th
The figure is a plan view of a main part showing the operation of the take-out device. In addition, in the reference numerals used in the drawings, 11... fixed platen 12... movable platen 13... fixed side mold 14... movable side mold 21... moving mechanism 22... take-out plate 23... ...Molded product 24...Magnetic scales 31-34...Linear pulse motor 52...Sucker 68...Position control device 69...Controller 70...Magnetic heads 71-74...Pulse motor It is a driving device.

Claims (1)

[Claims] In a device for automatically taking out a molded product formed by a molding device having an openable/closable mold, a moving mechanism is attached to a movable platen that supports one of the molds, and a taking out means for taking out the molded product is attached to this moving mechanism. A molded product take-out device, further comprising: a detecting means for detecting an opening amount of the mold, and a control means controls the moving mechanism according to a detection output of the detecting means.