JP6575967B2 - Ejector operation method of mold moving type molding machine - Google Patents

Description

The present invention is a mold holding a molded article between the molding stage and the removal stage is moved, the molded article of the actuation and removal stage of molded stage extraction of mobile molding machine mold is Ru performed in parallel The present invention relates to an ejector operating method.

As a mold moving type molding machine in which a mold holding a molded product is moved between a molding stage and an extraction stage and the operation of the molding stage and the extraction of the extraction stage are performed in parallel, Patent Document 1 and Patent Document 2 There are a type in which the lower mold moves in the horizontal direction, and a type in which the lower mold rotates with the rotation of the rotary table, as in Patent Document 3 and Patent Document 4. Of these, Patent Document 1 performs press molding, and Patent Documents 2 to 4 perform injection molding.

In these patent documents, the molded product is taken out at the take-out stage. Regarding the timing of taking out the molded product, Patent Document 1 only describes that it is taken out by suction after moving to the take-out stage. Further, Patent Document 2 describes performing an injection and mold release simultaneous execution process using a protruding device. Furthermore, in Patent Document 3, in addition to the fully automatic mode in which the eject advance operation is performed simultaneously with the mold closing, the eject advance operation is manually performed after the rotation of the rotary table. In this case, the mold closing operation is stopped and the mold is closed afterwards. It is described that the product has a product confirmation mode to perform the operation. Furthermore, Patent Document 4 describes that in an injection molding machine provided with two lower molds on a rotary table, a molded product is taken out from one lower mold and clamped. In addition, Patent Document 4 is understood to be taken out simultaneously with mold clamping from the description of the specification, and in the latter half of the mold clamping, one lower mold is inserted, and also from one lower mold. It is understood that the extrusion of the molded product is completed in the first half of the mold clamping.

JP-A-2-197399 (claims, page 4, lower left column to page 4, lower right column, FIG. 1) JP 2009-214438 A (Claim 5, 0034, FIG. 8, FIG. 9) JP 2008-307858 (Claims 1, 0031, 0035, FIGS. 5 and 6) JP 2002-1757 A (0009, 0011, 0036, 0037, FIG. 2)

However, the removal of the molded product in Patent Document 1 is simply described as after movement, and the ejector device is not described. Moreover, although patent document 4 uses an ejector apparatus, there is only description that the ejector apparatus is operated at the time of mold clamping. Patent Document 2 operates the ejector device simultaneously with the injection at the molding stage, and Patent Document 3 operates the ejector device simultaneously with the mold closing. It was.

In other words, when the ejector device is operated at the same time as the mold clamping pressure increase and the injection, if the hydraulic oil is supplied to both by the pump, the oil feed amount is the highest at the time of mold clamping pressure increase and injection. Since this is necessary, there is a problem that it is difficult to obtain the speed and force required for the ejector device. Even in the case where both operations are performed using an electric motor, there is a problem that the amount of electric power at the peak increases because the amount of electric power is required most at the time of mold clamping pressure increase and injection. . Therefore, in a molding machine using a hydraulic or electric motor, it is desirable to level out the energy consumption of each process including the amount of oil fed from the pump. There was a problem with the conversion. On the other hand, it is conceivable to increase the size of the hydraulic equipment or to combine the hydraulic pressure and the electric motor to cope with the above problem. However, these measures have a problem that the cost of the apparatus increases.

In some cases, even in the same molding machine, the timing of the operation of the ejector device may be changed depending on the molded product to be molded and the mold attached. That is, the molded product molded by the molding machine includes a molded product that should be projected by the ejector device as soon as possible and a molded product that should be projected after a certain time after molding. However, the patent documents described in the above-mentioned Patent Documents 1 to 4 cannot sufficiently cope with such changes. In particular, Patent Document 3 describes that a product confirmation mode may be provided, but does not change the operation timing of the ejector device in relation to other processes.

In view of the above problems, the present invention provides an ejector operating method for a mold moving type molding machine capable of leveling energy consumption including the amount of oil fed from a pump while suppressing an increase in cost of the apparatus. This is the first purpose. Another object of the present invention is to provide an ejector operating method for a mold moving molding machine that can change the operation timing of the ejector device corresponding to the molded product to be molded and the mold to be attached.

According to a first aspect of the present invention, there is provided a method for operating an ejector of a mold moving type molding machine , wherein a mold holding a molded product is moved between a molding stage and an extraction stage, and the operation of the molding stage and the molding of the extraction stage are performed. In the ejector operating method of the mold moving type molding machine in which the product is taken out in parallel,
The ejector device is operably provided at the take-out stage, and the first by sequence control in which the ejector device is actuated after the mold holding the molded product is moved to the take-out stage until the next operation start of the mold stage. The molding mode and the mold holding the molded product are moved to the take-out stage, the next operation is performed on the molding stage, the pressurization and holding process is started, the molding is completed, and the mold is moved to the molding stage A second molding mode based on sequence control in which the ejector device is operated is provided between the first molding mode and the second molding mode.
According to a second aspect of the present invention, there is provided a method for operating an ejector of a mold moving molding machine according to the first aspect, wherein the pressurizing and holding step includes a detected value of hydraulic pressure or force at the time of pressurizing, It is started when at least one of the pressure, the position of the movable mold or the movable platen, the time elapsed from the start of the pressure increasing process, and the mold temperature has reached a set value.
According to a third aspect of the present invention, there is provided a method for operating an ejector of a mold moving type molding machine, wherein a mold holding a molded product is moved between a molding stage and an extraction stage, and the operation of the molding stage and the molding of the extraction stage are performed. In an ejector operating method of a mold moving type molding machine in which product removal is performed in parallel, an ejector device using a hydraulic cylinder is operably provided on the take-out stage, and a compression cylinder that is hydraulically operated on the forming stage The pressing cylinder and the ejector device are both supplied with hydraulic oil from the same pump, and the pressing device is moved after the mold holding the molded product is moved to the take-out stage. After the next operation is performed and the pressure holding process after the pressure increasing process is completed, the molding in the press machine is completed and the mold starts moving to the molding stage. The ejector device is characterized in that it operates between.
According to a fourth aspect of the present invention, there is provided a method for operating an ejector of a mold moving type molding machine, wherein a mold holding a molded product is moved between a molding stage and an extraction stage, and the operation of the molding stage and the molding of the extraction stage are performed. In the ejector operating method of the mold moving type molding machine in which the product is taken out in parallel,
An ejector device is operably provided on the take-out stage, a mold clamping device is provided on the molding stage of the mold movable molding machine, and an injection device is attached to the molding stage, and both the ejector device and the injection device are provided. Is operated by an electric motor or both are operated by a hydraulic drive device. After the mold holding the molded product is moved to the take-out stage, which is a molding stage, the next operation of the mold clamping device is performed and the mold clamping is performed. The ejector device is operated by sequence control without performing manual control after completion of the injection process in the pressurization holding process after completion of the compression process .

In the ejector operating method of the mold movable molding machine of the present invention, the mold holding the molded product is moved between the molding stage and the take-out stage, and the operation of the molding stage and the take-out of the molded product at the take-out stage are performed in parallel. In the ejector operating method of the movable mold molding machine , the ejector device is operably provided at the take-out stage, and the next operation of the mold stage starts after the mold holding the molded product is moved to the take-out stage. Until the first molding mode by sequence control in which the ejector device operates until the mold holding the molded product is moved to the take-out stage, the next operation is performed on the molding stage, and the pressure holding process is started. molding the ejector device during the to mold complete before starting moving the forming stage provided with the second forming mode by sequence control to operate the front Since the first forming mode and the second forming mode of switched by setting, by moldings or fitted is a mold for molding, it is possible to change the timing of the operation of the ejector device.

It is a front view of the metal mold | die movable molding machine of this embodiment. It is an operation | movement figure which shows the 1st shaping | molding mode and 2nd shaping | molding mode of the metal mold | die movable molding machine of this embodiment. It is a front view of the metal mold | die movable molding machine of another embodiment. It is an operation | movement figure which shows the 1st shaping | molding mode and 2nd shaping | molding mode of the metal mold | die movable molding machine of another embodiment.

A mold moving molding machine 11 of the present invention will be described with reference to FIG. The mold movable molding machine 11 is a mold (lower molds 14 and 14) that holds a molded product W between a press device 12 that is a molding stage and take-out stages 13A and 13B provided on one side and the other side thereof. ) Is moved, and the operation of the press device 12 and the removal of the molded product W at the take-out stages 13A and 13B can be performed in parallel.

The press device 12 that is a molding machine of the mold movable molding machine 11 will be described. A tie bar 17 is provided between the lower fixed platen 15 and the upper platen 16. The upper plate 16 is provided with a compression cylinder 18 of a compression mechanism (pressure mechanism), and a ram 19 of the compression cylinder 18 is fixed to the back surface of the movable plate 20. Mold opening / closing cylinders 21 and 21 of a mold opening / closing mechanism are provided by connecting the upper board 16 and the movable board 20. An upper mold 22 that is a movable mold is attached to the lower surface of the movable platen 20. A half nut 32 is provided near the tie bar 17 on the upper surface of the movable platen 20. The movable platen 20 is guided by the tie bar 17 by the operation of the mold opening / closing cylinders 21 and 21 and is moved up and down with respect to the lower fixed platen 15. The press device 12 may be partly or wholly operated by an electric motor, and the compression mechanism may be a device using a toggle device or a crank device.

Next, the mold moving mechanism 23 will be described. On the upper surface of the lower fixed platen 15 of the pressing device 12, a low friction member such as a rolling ball 24 and a roller constituting a part of the mold moving mechanism is provided. The rolling ball 24 is provided in a hole provided on the upper surface of the lower fixed platen 15, and a part of the rolling ball 24 protrudes from the upper surface of the lower fixed platen 15 so that it can roll freely. Further, when a bolster 27 described later is placed thereon and the press device 12 is pressurized, the bolster 27 is retracted to the same height as the upper surface of the lower fixed platen 15. In addition, on one side and the other side of the press device 12, take-out stages 13A and 13B and a gantry 25 are provided. The upper surface of the gantry 25 has substantially the same height as the lower fixed platen 15 of the press device 12, and a low friction member such as a rolling ball 26 is also provided. On the rolling balls 24 and 26 of the moving mechanism 23, a bolster 27 (lower mold mounting plate) having two lower molds 14 and 14 mounted thereon is placed. The lower molds 14 and 14 on the bolster 27 can be moved between the press device 12 and the take-out stage 13 by a hydraulic cylinder 35 which is a driving means of a mold moving mechanism. The drive means for the mold moving mechanism may be one using an electric motor in addition to the hydraulic cylinder 35.

At least one of the press device 12 or the take-out stages 13A and 13B is provided with a stopper 36, which is a positioning and fixing mechanism (not shown) of the bolster 27. Further, the pressing device 12 is provided with a clamper 37 for fixing the bolster 27 or the mold. The mold moving mechanism 23 is not limited to the above, and may be one in which a rolling ball or the like is attached to the bolster side. The number of take-out stages is not limited, and there is only one take-out stage, and one lower die may be moved from the press device to the take-out stage. The number of extraction stages may be three or four. The bolster 27 is not essential, and only the mold may move between the molding stage and the extraction stage. Furthermore, the mold that moves between the molding stage and the take-out stage may be an upper mold alone or a set of an upper mold and a lower mold.

Next, the ejector device 28 will be described. A hydraulic cylinder 29, which is a drive mechanism for the ejector device 28, is attached to the lower surface of the gantry 25 of the take-out stage 13. On the other hand, a through hole 27a is provided at the lower die mounting position of the bolster 27 so as to penetrate the plate in the vertical direction. Further, the lower mold 14 incorporates an ejector plate 30 and a protruding pin 31 of the ejector device 28. When the bolster 27 is positioned and fixed to the take-out stages 13A and 13B, the rod of the hydraulic cylinder 29 is inserted into the through hole 27a of the bolster 27 and further advances to press the ejector plate 30, whereby the protruding pin 31 also operates. Thus, the protruding operation of the molded product W from the lower mold 14 is performed. The ejector device 28 may use an electric motor. Further, the ejector device 28 may be one in which all mechanisms are provided on the bolster side and the mold side, and is moved along with the movement of the mold so as to be operable on the take-out stage 13.

The compression cylinder 18, the mold opening / closing cylinder 21, the hydraulic cylinder 29 of the ejector device 28, and the like are connected to the hydraulic device 33 through piping. The hydraulic device 33 includes various valves, sensors, pumps, and tanks. The valves, sensors, and pumps of the hydraulic device 33 are connected to the control device 34. Although not limited to this, in this embodiment, hydraulic oil is supplied from one pump to each cylinder.

Next, a method for molding the molded product W using the mold moving molding machine 11 and a molding mode relating to the timing of ejector operation will be described. In this embodiment, the molding mode relating to the timing of ejector operation can be switched between the first molding mode and the second molding mode by setting. First, the first molding mode will be described along the molding procedure of one molded product W using one lower mold 14 with reference to the process chart of <first molding mode> on the upper side of FIG. . When the other lower mold 14 attached to the bolster 27 is in the press device 12, one of the lower molds 14 is on the take-out stage 13A and is in a standby state with a molded product placed thereon. When the molding in the press device 12 is completed, the press device 12 is opened. Next, the bolster 27 is moved rightward in FIG. 1 by the operation of the hydraulic cylinder 35, and the lower die 14 on which the molded product is placed is moved and carried into the press device 12, positioned, and fixed by the clamper 37 ( Moving process). At this time, the other lower mold 14 holding the molded product W is moved to the take-out stage 13B, and then the molded product W is ejected by the ejector device 28. Further description of the operation will be omitted.

In the press device 12 as a molding stage, when the standby time elapses, the mold opening / closing cylinder 21 is operated to perform mold closing (mold closing process). When the upper die 22 is matched with the lower die 14, the half nut 32 is activated, and then the compression cylinder 18 is activated. The pressure increasing process is until the hydraulic pressure at which the molded product is set is detected while the ram 19 is extended by the operation of the compression cylinder 18. During this time, a large amount of oil is supplied from the pump of the hydraulic device 33 to the compression cylinder 18. I need. When the pressure applied to the molded product exceeds a certain level, the amount of hydraulic oil supplied to the compression cylinder 18 is only a small amount necessary for pressure holding (pressure holding step). In this compression and holding step, when the molded product is a resin, the resin shrinks in the process of cooling and solidifying by cooling the mold, so that the amount of hydraulic oil supplied to the compression cylinder 18 is only required.

In addition to the detection of the hydraulic pressure during pressurization, the switching from the pressure increasing process to the pressurizing and holding process is not limited to the detection of the tie bar extension amount by a tie bar sensor attached to the tie bar or the like, and the force of the load cell attached to the press device Detected value (set clamping force), pressure of molded product (set surface pressure) by sensors installed in the cavity, position of movable mold or movable platen by position sensor (set position), and pressure increase process by timer It may be started when at least one of detection of the passage of time (set time) since then and the temperature of the mold in the case of the heating / cooling mold has reached the set value (set temperature). When a predetermined time elapses from the start of the pressurizing and holding process, a depressurizing process for reducing the pressure of the compression cylinder 18 is performed, and then a mold opening process using the mold opening / closing cylinder 21 is performed after the half nut is detached.

When the mold opening process is completed and the molding is completed, the lower mold 14 and the bolster 27 holding the molded product W are moved to the take-out stage 13A by the operation of the hydraulic cylinder 35 for moving the mold, and the positioning is stopped. (Moving process). In the first molding mode, the ejector device 28 is moved from when the lower mold 14 (mold) holding the molded product W is moved to the take-out stage 13A until the next operation of the press device 12 as the molding stage is started. Is activated. As for the operation of the ejector device 28, the rod presses the ejector plate 30 together with the forward operation of the hydraulic cylinder 29, and the protruding pin 31 protrudes from the cavity surface of the lower mold 14 to protrude the molded product W. Alternatively, the hydraulic cylinder 29 is repeatedly moved forward and backward according to the set number of times, and the molded product W is protruded by the protruding pin 31. The molded product W protruding from the lower mold 14 is carried out to another place by a robot or the like (not shown). Then, the next molded product is placed on the empty lower mold 14 (placement step). During the operation of the ejector device 28, the press device 12 is in a standby process in which the operation is not performed. When the operation of the ejector device 28 is completed, the die closing process is performed in the pressing device 12 in parallel with the placing process. In the press device 12, the molded product W is molded again in the order of the pressure increasing process, the compression holding process, the pressure releasing process, and the mold opening process. The take-out stage 13A and the take-out stage 13B alternately take out the molded product W, but the take-out stage 13B is similarly formed and taken out in the first forming mode.

In this first molding mode, when it is better to take out the molded product W from the mold as soon as possible after molding, or after taking out the molded product W at the take-out stages 13A and 13B, it takes time to install the molded product or insert. Is suitably used in such a case. In particular, when the molded product W is a resin or a molded product containing a resin and the lower mold 14 is a convex mold, the shrinkage of the molded product W attached to the convex mold proceeds during press molding and cooling after molding. The mold can be easily released if it protrudes at an earlier stage. Further, in the case of the mold moving type molding machine 11 that operates the molding stage such as the press device 12 and the ejector device 28 by hydraulic pressure as in the present embodiment, the operation of the ejector device 28 before the start of the next operation of the press device 12. Therefore, a large amount of hydraulic oil can be supplied to the ejector device 28 at a time. Or it becomes possible to equalize the oil feed amount in each step without increasing the size of the pump.

Next, with respect to the case where the molding mode relating to the timing of ejector operation of the mold movable molding machine 11 is switched to the second molding mode, refer to the <second molding mode> process chart on the lower side of FIG. The description will be focused on the point after molding, which is a point. When the second molding mode of the mold movable molding machine 11 is selected, one lower mold 14 is moved to the take-out stage 13A and positioned together with the bolster 27 (moving step), and the other lower mold 14 is moved to the press device 12. When moved and loaded, the press device 12 starts the next molding operation using the other lower mold 14 without passing through the standby process. The press device 12 operates in the order of a mold closing process, a pressure increasing process, a pressure holding process, a pressure releasing process, and a mold opening process. In this embodiment, after the pressure increasing process of the press apparatus 12 is completed, the take-out stage 13A is operated. Then, the ejector device 28 is operated to start the projection of the molded product W from one lower mold 14. This allows the ejector device 28 to perform the ejector operation in a pressure holding process or a pressure releasing process in which a relatively small or unnecessary amount of oil is supplied after the mold closing process and the pressure increasing process that consume a large amount of hydraulic oil. A large amount of hydraulic oil can be supplied at one time. Or it becomes possible to equalize the oil feed amount in each step without increasing the size of the pump. And since an ejector apparatus is operated in parallel with a pressurization holding process and a depressurization process, compared with the 1st forming mode, a forming cycle can be shortened.

Regarding the operation timing of the ejector device 28, it is also conceivable to operate the ejector device 28 in parallel with the mold opening process of the press device 12, in addition to the above embodiment. When the ejector device 28 is operated during the mold opening process, a large amount of oil feed and energy consumption are required temporarily. However, the operation of the ejector device 28 can be slowed down without extending the molding cycle. Furthermore, it is conceivable that the ejector device 28 is operated after completion of the mold opening of the press device 12 and before the lower die 14 starts moving. By operating the ejector device 28 after completion of mold opening, the operation of the ejector device 28 can be slowed down most while leveling the oil feed amount and energy consumption. However, the method of causing the ejector device 28 after the completion of mold opening causes an extension of the molding cycle as in the first molding mode.

The second molding mode is suitably used when it is better to take out the molded product W from the mold as late as possible after molding. Specifically, when the molded product W is a resin or a molded product containing a resin and the lower mold 14 is a concave mold, the shrinkage of the molded product W proceeds in the concave mold during the press molding and cooling after molding. The more the shrinkage further proceeds, the easier it is to release. In addition, in the molded product W, when aesthetics and accuracy are required for the portion protruding by the protruding pin 31, it is desirable to release the mold after cooling and solidification has progressed because the extent of the ejector trace is reduced. Furthermore, it is also desirable when secondary processing is performed before the molded product is protruded by the protruding pin 31. It is also desirable when it is desired to delay the progress of cooling of the mold by leaving the previous molded product in the mold.

In the above example, the first molding mode and the second molding mode of the mold movable molding machine 11 are switched by setting, and the operations of the ejector device 28 and the press device 12 are started by sequence control accordingly. However, at least one of the first molding mode and the second molding mode of the mold movable molding machine 11 may be started by manual control by an operator. In addition, the mold movable molding machine 11 may switch between the mode in which the ejector device 28 is operated during the mold closing process and the pressure increasing process and the second molding mode within a range in which the molding cycle is not extended. Only the second molding mode may be used.

Next, another embodiment of the mold transfer molding machine of the present invention will be described with reference to FIG. The mold moving type molding machine shown in FIG. 3 is a mold rotary moving type injection molding machine 51 provided with a vertical mold clamping device 52. The mold clamping device 52 of the mold rotational movement type injection molding machine 51 is provided with a fixed plate 54 on a bed 53, and a fixed table 54 is provided with a rotary table 56 that is rotated by an electric motor 55 for rotating the table. A pressure receiving plate 58 is provided below the fixed plate 54 and a movable plate 59 is provided above the fixed plate 54. The pressure receiving plate 58 and the movable plate 59 are connected by three tie bars 60 that pass through holes formed in the fixed platen 54. A toggle mechanism 61 that is a mold clamping mechanism operated by an electric motor 57 for mold clamping is disposed between the fixed platen 54 and the pressure receiving plate 58.

A plurality of rotating molds 62 (molds) are mounted on the mold mounting surface on the upper surface of the rotary table 56. The rotary table 56 includes a plurality of rotary molds 62 between a molding stage in the mold clamping device 52 and an extraction stage 64 on one side of the mold clamping device 52 around an inner tie bar 60 that is an axis serving as a rotation center. It can rotate. One movable mold 63 attached to the lower surface of the movable plate 59 and one of the rotary molds 62 of the rotary table 56 are clamped. In addition, a drive unit of an ejector device 66 that is operated by an electric motor 65 is provided in a portion of the take-out stage 64 on one side of the bed 53. Further, each rotary mold 62 incorporates an ejector plate 67 and a protruding pin 68 of the ejector device 66. If there are three or more rotating molds, the take-out stage and the insert stage may be provided separately. The rotating mold may be attached to the movable platen. The mold may be reciprocated linearly between the molding stage and the take-out stage.

Further, an injection device 69 is attached to the other side of the bed 53 and to the side of the vertical mold clamping device 52 which is a molding stage. And the nozzle 72 fixed to the front part of the heating cylinder 71 incorporating the screw of the injection device 70 is capable of nozzle touching at least one side surface of the movable mold 63 or the rotary mold 62. The injection device 70 may be provided in the vertical direction with the nozzle facing downward, and the number thereof is not limited. Further, the mold rotary movement type injection molding machine 51 provided with the mold clamping device 52 may be a part or all of which uses a hydraulic drive device.

As shown in FIG. 4, also in the mold rotary movement type injection molding machine 51 of another embodiment, the first molding mode and the second molding mode can be switched by setting as in the present embodiment of FIG. 1. It has become. That is, when the first molding mode is performed, the rotary table 56 to which the rotary mold 62 holding the molded product W2 is attached is moved to the take-out stage 64 and then the mold closing process of the mold clamping device 52 is started. During this time, the ejector device 66 is operated. Further, when the second molding mode is performed, the rotary table 56 to which the rotary mold 62 holding the molded product W2 is attached is moved to the take-out stage 64, and the next operation of the molding stage is performed to complete the pressure increasing process. After completion of the injection process (including the pressure holding process) in the pressurizing and holding process, the molding is then completed and the rotary table 56 is rotated to start moving the rotary mold 62 toward the mold clamping device 52 again. In the meantime, the ejector device 66 is operated. The pressurizing and holding process of the mold rotational movement type injection molding machine 51 of the present embodiment is started by detecting force (detecting mold clamping force). More specifically, this is performed by detecting the extension of the tie bar by the tie sensor, detecting the strain amount of the fixed plate or the movable plate by the strain sensor, and reaching the set value of the detection value of the load cell. Alternatively, the setting may be the same as that of the mold rotational movement type molding machine 11, and the current value of the electric motor 57 for clamping may be detected.

Also in another embodiment, the operation start time of the ejector device 66 is determined from the viewpoint of the optimum timing for taking out the molded product W2 from the rotary mold 62, leveling of energy consumption, shortening of the molding cycle time, and the like. In particular, when the second molding mode is selected, it is possible to level the energy consumption and shorten the molding cycle time by starting the operation of the ejector device 66 in the pressure holding process (cooling process) after the pressure increasing process. From the standpoint of In another embodiment, it is possible to operate the ejector device 66 after the metering step of the injection device 70 is completed in the pressurizing and holding step, unless the time for installing the insert for the next molding is necessary. This is preferable from the viewpoint of leveling consumption. In addition, the mold rotational movement type injection molding machine 51 may also operate the ejector device 66 only after the pressure holding step without having the first molding mode.

If the mold moving injection molding machine is an injection compression molding machine that uses a mold clamping device to compress molten resin or the like in the mold cavity, after the mold clamping compression process of the mold clamping device is completed (the injection process of the injection device is completed). It is desirable to operate the ejector device during the pressure holding process (including the latter).

Although the present invention is not enumerated one by one, it is not limited to that of the above-described embodiment, and it goes without saying that the present invention is applied to those modified by a person skilled in the art based on the gist of the present invention. is there. The press device, which is a molding machine of the mold movable molding machine of the present invention, and the mold clamping device of the injection molding machine may perform mold opening / closing and clamping in the horizontal direction, and the ejector device also projects the molded product in the horizontal direction. It may be. The types of molded products and molded products molded by a press apparatus or an injection molding machine are not limited.

11 Mold moving type molding machine 12 Press machine (molding stage)
13A, 13B Extraction stage 14 Lower mold (mold)
18 Compression Cylinder 23 Movement Mechanism 28 Ejector Device W Molded Product

Claims (4)

In the ejector operating method of the mold movable molding machine in which the mold holding the molded product is moved between the molding stage and the extraction stage, and the operation of the molding stage and the extraction of the molded product of the extraction stage are performed in parallel.
The ejector device is operably provided at the take-out stage,
A first molding mode based on sequence control in which the ejector device operates between the time when the mold holding the molded product is moved to the take-out stage and the start of the next operation of the molding stage;
The ejector between the time when the mold holding the molded product is moved to the take-out stage and the next operation is performed at the molding stage and the pressurizing and holding process is started until the molding is completed and the mold is started to move to the molding stage. A second molding mode with sequence control in which the device operates is provided;
A method of operating an ejector of a mold moving type molding machine , wherein the first molding mode and the second molding mode are switched by setting. The pressurizing and holding step includes the detected value of the hydraulic pressure or force at the time of pressurization, the pressure of the molded product in the cavity, the position of the movable mold or the movable platen, the passage of time after starting the pressure increasing process, and the mold 2. The method of operating an ejector for a mold transfer molding machine according to claim 1, wherein at least one of the temperatures reaches a set value. In the ejector operating method of the mold movable molding machine in which the mold holding the molded product is moved between the molding stage and the extraction stage, and the operation of the molding stage and the extraction of the molded product of the extraction stage are performed in parallel.
The ejector stage is provided with an ejector device using a hydraulic cylinder so that it can be operated.
The molding stage is provided with a press device having a compression cylinder that is operated by hydraulic pressure,
The compression cylinder and the ejector device are both supplied with hydraulic oil from the same pump,
After the mold holding the molded product is moved to the take-out stage, the next operation of the press device is performed, and after the pressurization holding process after the pressure increasing process is started, the molding in the press device is completed and the mold is removed. 2. An ejector operating method for a mold moving type molding machine, wherein the ejector device is operated before moving to a molding stage. In the ejector operating method of the mold movable molding machine in which the mold holding the molded product is moved between the molding stage and the extraction stage, and the operation of the molding stage and the extraction of the molded product of the extraction stage are performed in parallel.
The ejector stage is operably provided with an ejector stage,
A mold clamping device is provided on the molding stage of the mold movable molding machine and an injection device is attached to the molding stage.
The ejector device and the injection device are both operated by an electric motor or both are operated by a hydraulic drive device,
After the mold holding the molded product is moved to the take-out stage which is a molding stage, the next operation of the mold clamping device is performed, and the manual control is performed after the injection process in the pressurization holding process after the mold clamping compression process is completed. A method for operating an ejector of a mold moving type molding machine, wherein the ejector device is operated by sequence control without being performed .