JP4928283B2 - Injection molding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively shorten a molding cycle time by effectively allowing the operation of another process to overlap with the rotary operation of a turntable in an injection molding machine using the turntable. <P>SOLUTION: The turntable on which a plurality of movable molds are attached at a predetermined angular interval is mounted on a movable die plate only in a rotatable manner, and a plurality of the fixed molds corresponding to a plurality of the movable molds are attached to the fixed die plate at a predetermined angular interval to mount a molded product on the fixed molds by mold opening. At least a part of the operation of a molded product ejector and/or a part of the operation of an ejector device for ejecting the molded product from the fixed molds is allowed to overlap timewise with the rotary operation of the turntable. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to an injection molding machine in which a plurality of molds are mounted on a rotary table at predetermined angular intervals, and the rotary table is intermittently rotated by a predetermined angle.

  Two molds are mounted (attached) on the rotary table at intervals of 180 °, and the rotary table is intermittently rotated in the forward and reverse directions by 180 °, or four on the rotary table. A four-stage type injection molding machine in which dies are mounted at intervals of 90 ° and the rotary table is intermittently rotated in a fixed direction by 90 ° is well known.

  In such an injection molding machine, for example, two injection devices are arranged for one fixed die plate, two fixed molds are mounted on the fixed die plate, and a rotary table is mounted on the movable die plate. Is held and two movable molds are mounted on the rotary table, and the rotary table is intermittently rotated by 180 ° for each molding cycle, so that the fixed mold on the fixed die plate is 1 2. Description of the Related Art A two-stage type horizontal injection molding machine is known in which a movable mold that is alternately paired can be replaced every molding cycle. In such an injection molding machine, two different injection devices are used to inject different resins, so that one injection device first injects the resin M, and the other injection device uses the resin M molded product (molding). Two-color molding (molding with two types of resin materials M and N) can be easily performed by injecting the resin N to the mold unit holding the molded product on the way.

  Alternatively, for example, a single movable side mold is provided for two fixed side molds mounted on the rotary table, and a single injection device is provided, and one of the two fixed side molds is disposed. By alternately facing the movable mold, injection is performed on the stage where the molds are opposed, and the other stage is configured to place and position the insert article on the fixed mold. Also known is a two-stage vertical injection molding machine that enables efficient insert molding.

  In addition, for example, four fixed-side molds are mounted on the rotary table at intervals of 90 °, and the rotary table is intermittently rotated by 90 ° in a certain direction, thereby allowing one of the four fixed-side molds to be It is made to stop at the position facing the movable mold which is provided only one by one, placing / positioning of the insert article in the mold, injection / filling of the molten resin, and ejection / ejection of the molded product. Also, a four-stage type vertical injection molding machine has been known, in which the molding cycle in insert molding is further shortened by performing them in separate stages.

  By the way, in the injection molding machine using the rotary table as described above, the rotation process (rotation operation) of the rotary table is included in each molding cycle as compared with the injection molding machine not using the rotary table. The time of one molding cycle becomes longer by the rotation operation time of the table.

In JP-A-2006-103203 (Patent Document 1), a movable disk (movable die plate) is held such that a rotating disk (rotary table) can be moved (extruded / retracted) by a predetermined amount in the axial direction. Therefore, when the turntable is in the push-out position, the turntable can be driven to rotate, and in the injection molding machine having a configuration in which an ejecting device is provided on the movable platen side, the mold changing operation of the turntable is performed. A part of the operation (extruding operation, rotating operation, and retracting operation of the rotating disk) is overlapped in time, or part of the ejecting operation is overlapped in time with the extruding operation of the rotating disk. A technique has been disclosed in which a part of the ejecting operation is temporally overlapped with the pulling-in operation to shorten the molding cycle time.
JP 2006-103203 A

  By the way, in the injection molding machine using the rotating disk (rotating table) disclosed in Patent Document 1, the rotating table can be rotated only when the rotating table is at an extrusion position separated from the movable disk (movable die plate). In addition, since the rotary table is required to be pushed out and retracted before and after the rotating operation, the time required for the remodeling operation by the rotating table is increased, and the ejecting operation is time-consuming. The period of the revolving operation of the rotary table that is overlapped with the rotation table is the extruding operation period before the rotating operation or the retracting operation period after the rotating operation. The effect of shortening the molding cycle time due to overlapping is poor. This is because the ejecting device is provided on the side of the movable die plate on which the rotary table is mounted, so that the ejecting operation cannot be performed during the period in which the rotary table is rotating. Further, in the injection molding machine disclosed in Patent Document 1, no consideration is given to shortening the molding cycle time in consideration of the operation time of the molded product take-out machine (molded product take-out robot). However, in an injection molding machine using a rotary table, it is one of important issues to appropriately control the operation of the molded product take-out machine for shortening the molding cycle.

  The present invention has been made in view of the above points, and an object of the present invention is to effectively overlap the operation of other processes with the rotation operation of the rotary table in an injection molding machine using the rotary table. Thus, it is intended to effectively shorten the molding cycle time.

In order to achieve the above-mentioned object, the present invention mounts a rotary table on which a plurality of movable side molds are attached at predetermined angular intervals so as to be rotatable only on a movable die plate, and the fixed die plate includes the plurality of movable side molds. A plurality of fixed molds corresponding to the mold are attached at predetermined angular intervals, and the rotary table is intermittently rotated by a predetermined angle to change the combination of the movable mold and the fixed mold, respectively. taking a configuration of depositing each molten resin into a cavity formed the movable mold paired and in the fixed mold injected and filled, the molded product by mold opening to said fixed mold, said eject device and control an injection molding machine entire operation including the peripheral device such as a demold apparatus to retrieve the extruded molded article by the ejecting device for projecting a shaped article from the fixed mold In the injection molding machine having a controller,
The controller performs a rotation operation of the rotary table, at least part of the operation of the demold apparatus, and / or, at least part of the operation of the eject device, the control for temporally overlap.

  In the present invention, the molded product is attached to the fixed mold by opening the mold, and the ejecting operation can be performed without operatively interfering with the rotation of the rotary table to which the movable mold is attached. Therefore, at least a part of the operation of the molded product take-out machine is overlapped in time with the rotation operation of the rotary table, or at least a part of the operation of the product take-out machine related to the ejection operation is performed. By overlapping in time, it is possible to effectively use the operation period of the table rotation as an operation period of at least a part of other processes, and therefore, injection molding using the rotation table. In the machine, it is possible to effectively shorten the molding cycle time.

  Hereinafter, an injection molding machine according to an embodiment of the present invention will be described with reference to the drawings. The injection molding machine referred to in the present application refers to an injection molding machine system including peripheral machines such as a molded product take-out machine (molded product take-out robot).

  1 to 12 relate to a horizontal injection molding machine according to an embodiment of the present invention (hereinafter referred to as this embodiment), FIG. 1 is a front view of the injection molding machine of this embodiment, and FIG. It is a top view of the injection molding machine of a form.

  1 and 2, 1 is a base frame, 2 is a mold opening / closing device arranged on the base frame 1, and 3A and 3B are arranged on the base frame 1 so as to be parallel to each other in the horizontal direction. Two injection devices (an injection device (A) and an injection device (B)).

  The mold opening / closing device 2 is a fixed die plate having a tail stock 4 mounted with a mold opening / closing motor (not shown) and a fixed mold (the mold is not shown in FIGS. 1 and 2). 5, a plurality of tie bars 6 spanned between the tailstock 4 and the fixed die plate 5, a movable die plate 7 that can move back and forth between the tailstock 4 and the fixed die plate 5, etc. It is configured. In the present embodiment, two fixed molds are mounted on the fixed die plate 5, and the movable die plate 7 holds the rotary table 8 so that only the rotary table can be rotated. A mold (the mold is not shown in FIGS. 1 and 2) is mounted.

  During the molding operation for performing two-color molding (in the molding operation in the table use mode), the rotary table 8 is driven to rotate intermittently by 180 ° for each molding cycle, and the fixed mold on the fixed die plate 5 has one molding cycle. The movable molds that are alternately paired are replaced every time. In the molding operation for performing two-color molding, the two injection devices (A) 3A and the injection devices (B) 3B each inject different resins. Two-color molding (two types) by injecting resin N into a mold unit that injects M and holds the resin M molded product (molded product in the process of molding) with the other injection device (B) 3B Molding with the resin materials M and N). In the present embodiment, the mold for performing such two-color molding is mounted on the fixed die plate 5 and the rotary table 8, and the injection device (A) 3A and the injection device (B) 3B are different from each other. Resin is injected.

  During the molding operation in the table non-use mode, the rotary table 8 is not rotated, and the combination of the fixed side mold and the movable side mold is fixed, so that two mold units have two The injection device (A) 3A and the injection device (B) 3B each perform injection simultaneously. At this time, the two injection devices (A) 3A and the injection device (B) 3B can perform injection with the same resin or injection with different resins. In addition, the mold units corresponding to each of the injection devices (A) 3A and the injection devices (B) 3B are limited in that the mold thickness is the same. It is also possible to obtain molded products having different shapes.

  Each injection device (A) 3A and injection device (B) 3B are mounted on the base frame 1 via an injection system base board 9, and each injection device (A) 3A and injection device (B) 3B are Along a rail member 10 provided on the injection system base board 9, each can independently move forward and backward by a predetermined amount.

  As described above, the injection molding machine of this embodiment is equipped with a mold for performing two-color molding, and when the mold is opened, one injection device (A) On the mold unit side where the resin M is injected by 3A, the resin M molded product (molded product in the process of molding) is attached to the movable side mold, and the resin N is injected by the other injection device (B) 3B. On the mold unit side where the resin M and N molded products (completed molded products that are two-color molded products) are molded, the two-color molded products (resin M and N molded products) are attached to the fixed mold. It is like that. As described above, after the mold is opened, whether the molded product is attached to the movable side die or the fixed side die, as is well known, resin to the movable side die and the fixed side die. This can be easily realized by making a difference in the amount of biting, and is determined at the mold design stage. The term “configuration in which a molded product is attached to a fixed mold by mold opening”, which is a problem to solve the claims and problems of the present application, is, here, a two-color molded product (resins M and N by mold opening). This refers to a configuration in which a molded product is attached to a fixed mold.

  In the present embodiment, the fixed die on the side on which the two-color molded product (molded product) is attached is provided with an ejecting device having an ejecting core as will be described later. Thus, the molded product is ejected from the fixed mold. As the drive source of the ejection device, any of an air drive source, an electric drive source, and a hydraulic drive source can be adopted. Further, in the injection molding machine of the present embodiment, a molded product take-out machine (molded product take-out robot) 11 is provided on the fixed die plate 5 corresponding to the fixed mold on the side to which the molded product is attached. The molded product take-out machine 11 takes out the molded product protruding from the fixed mold by the ejecting apparatus to the outside of the injection molding machine.

  FIG. 3 is a diagram schematically showing the behavior of the first example of the molding operation in the injection molding machine of the present embodiment. Note that the position and shape of the movable side mold accompanying the rotation of the turntable 8 shown in FIG. 3 are actually different from those shown in the figure, but here they are simplified for convenience of illustration and are all the same. The movable mold shown in FIG. 3 (a) shows one of the two movable molds, and the movable mold shown in FIG. 3 (h) is composed of two movable molds. The other of them is shown.

  3A to 3H, reference numeral 21 denotes a fixed-side mold for molding a two-color molded product (molded product) among the two fixed-side molds mounted on the fixed die plate 5. 22 is a movable mold mounted on the rotary table 8, 23 is an eject core disposed in the fixed mold 21 so as to be able to move forward and backward by a predetermined amount, and 24 is a molded product (two-color molding). , 25 is an arm of the molded product take-out machine 11, and 26 is a molded product chuck portion of the molded product take-out machine 11 provided at the tip of the arm 25. 3A to 3H show a table rotation process performed after the mold is opened from the mold clamping state, and a process of entering the mold opening space of the molded product chuck portion 26 into the mold opening space. In addition, the manner in which the chucking process and the retracting process from the mold opening space, the eject ejecting process, and the eject returning process are overlapped in time is shown in the order of time passage.

  FIG. 3A shows a state immediately before the mold opening process in which the injection process and the cooling process are completed. When the start timing of the mold opening process is reached in this state, the movable die plate 7 is driven backward, Mold opening is performed as shown in FIG. When the mold opening is performed, as described above, the molded product (two-color molded product) 24 is separated from the movable mold 22 and attached to the fixed mold 21. In the first example of the molding operation shown in FIG. 3, when the mold opening process is completed, the table rotating process and the process of entering the mold opening space of the molded product chuck portion 26 are immediately started. FIG. 3C shows a lowering operation of the molded product chuck portion 26 (arm 25) (that is, a mold opening space of the molded product chuck portion 26 in a state where the table rotating process is started and the rotary table 8 is rotating. This shows a state in which the (entry process) is being performed.

  FIG. 3 (d) shows that after the step of entering the mold opening space of the molded product chuck portion 26 is completed, the ejecting step by the ejecting core 23 is performed while the rotary table 8 is rotating. The molded product 24 is protruded from the stationary mold 21 by the ejecting core 23 and moved to the molded product chuck portion 26 waiting at a predetermined position. FIG. 3 (e) shows a state where the chucking process is performed in a state where the rotary table 8 is rotating after the ejection projecting process is completed, and the molded product 24 is chucked by the molded product chuck portion 26. Show. As a chucking method of the molded product 24 by the molded product chuck unit 26, an appropriate method such as a mechanical gripping chuck or a vacuum chucking chuck can be employed.

  FIG. 3 (f) shows a state in which the eject return step is performed in a state where the rotary table 8 is rotating after the chucking step is completed, and the eject core 23 is returned to the retracted position. Yes. FIG. 3 (g) shows the ascending operation of the molded product chuck portion 26 (arm 25) (that is, the mold opening of the molded product chuck portion 26) in a state where the rotary table 8 is rotating after the eject return process is completed. The state in which the process of evacuating to space is being performed is shown. In the first example of the molding operation shown in FIG. 3, the table rotation process is completed simultaneously with the completion of the retracting process of the molded product chuck portion 26 to the mold opening space. When the table rotation process is completed, a mold closing / clamping process is started immediately after that, and the movable die plate 7 is driven forward as shown in FIG. In addition, after the process of retracting the molded product chuck portion 26 to the mold opening space is completed, the molded product take-out machine 11 moves the arm 25 to carry the molded product 24 outside the injection molding machine and mount a predetermined product. The molded product 24 is softly placed at the installation location, and then the arm 25 is moved to position the arm 25 and the molded product chuck portion 26 at a predetermined standby position in preparation for the next molding cycle. Yes.

  4 is a diagram showing a process transition of the first example of the molding operation shown in FIG. 3, in which P1 is a mold opening process, P2 is a table rotating process, and P3 is a mold of the molded product chuck portion 26. P4 is an ejecting process, P5 is a chucking process of the molded product chuck 26, P6 is an eject returning process, P7 is a retracting process of the molded product chuck 26 from the mold opening space, P8. Is a mold closing / clamping process.

  As shown in FIG. 4, in the first example of the molding operation, an entrance process P3 of the molded product chuck part 26, an eject ejection process P4, a chucking process P5 of the molded product chuck part 26, and an eject return process P6 The retraction process P7 of the molded product chuck portion 26 is overlapped in time with the table rotation process P2, and the time of the entry process P3, the time of the eject ejection process P4, and the time of the chucking process P5 The time Tc obtained by adding the time of the eject return process P6 and the time of the evacuation process P7 coincides with the time of the table rotation process P2. In the first example of the molding operation, since the table rotation process P2 and the processes P3 to P7 overlap in time, when the processes P3 to P7 are executed after the table rotation process P2 is completed. In comparison, the molding cycle time can be shortened by the time Tc. In addition, the execution order of the entrance process P3 of the molded product chuck part 26, the eject ejection process P4, the chucking process P5 of the molded product chuck part 26, the eject return process P6, and the retracting process P7 of the molded product chuck part 26 is as follows. Further, the time Tc obtained by adding the times of the processes P3 to P7 is also the minimum value allowed by the capacity of the injection molding machine, but the time of the table rotation process P2 is the same as that of the present embodiment. The injection molding machine has a specification that can be made shorter than the first example of the molding operation shown in FIG.

  FIG. 5 is a diagram showing a process transition of the second example of the molding operation in the injection molding machine of the present embodiment, and the reference numerals in the same figure are the same as those in FIG. The same applies to FIGS. 6 to 11 below). The second example of the molding operation is different from the first example of the molding operation in the rotational speed of the rotary table 8. In the second example of the molding operation, the second example of the molding operation is more than the first example of the molding operation. The rotation speed of the rotary table 8 is set to a high speed, and the time of the table rotation process P2 in FIG. 5 is shorter than the time of the table rotation process P2 in FIG. In the second example of the molding operation, when the table rotation process P2 is completed, the eject return process P6 and the retracting process P7 of the molded product chuck portion 26 are sequentially performed. When the retracting process P7 is completed, the mold closing / clamping process is performed. P8 is executed. In the second example of such a molding operation, the molding cycle time equivalent to that of the first example of the molding operation can be set.

  FIG. 6 is a diagram showing a process transition of a third example of the molding operation in the injection molding machine of the present embodiment. The third example of the molding operation is different from the first example of the molding operation in the start timing of the table rotation process P2. In the third example of the molding operation, the mold opening process P1 is in the process. When the rotation of the rotary table 8 is allowed, the table rotation process P2 is started. In the third example of the molding operation, when the mold opening process P1 is completed, an entrance process P3 of the molded product chuck part 26, an eject ejection process P4, and a chucking process P5 of the molded product chuck part 26 are combined with the table rotation process P2. When the table rotation process P2 is completed in a time-overlapping manner, the eject return process P6 and the retracting process P7 of the molded product chuck unit 26 are sequentially performed. When the retracting process P7 is completed, the mold closing / clamping is performed. Step P8 is performed. In the third example of such a molding operation, the molding cycle time equivalent to that in the first example of the molding operation can be set.

  FIG. 7 is a diagram showing a process transition of a fourth example of the molding operation in the injection molding machine of the present embodiment. The fourth example of the molding operation differs from the first example of the molding operation in the rotational speed of the rotary table 8 and the start timing of the table rotation process P2. In the fourth example of the molding operation, The rotation speed of the rotary table 8 is set to be higher than that in the first example of the operation operation, and the time of the table rotation process P2 in FIG. 7 is shorter than the time of the table rotation process P2 in FIG. In addition, when the rotation of the turntable 8 is allowed during the mold opening process P1, the table rotation process P2 is started. In the fourth example of the molding operation, when the mold opening process P1 is completed, the entry process P3 of the molded product chuck portion 26 is executed in time overlap with the table rotation process P2, and when the table rotation process P2 is completed. , Eject ejection process P4, chucking process P5 of molded product chuck part 26, eject return process P6, and retracting process P7 of molded product chuck part 26 are sequentially executed. When the retracting process P7 is completed, the mold closing / clamping process P8 is performed. Is executed. In the fourth example of such a molding operation, the molding cycle time equivalent to that of the first example of the molding operation can be set.

  FIG. 8 is a diagram showing a process transition of a fifth example of the molding operation in the injection molding machine of the present embodiment. In the fifth example of the molding operation, when the rotation of the rotary table 8 is permitted during the mold opening process P1, the table rotation process P2 is started and simultaneously with the start of the table rotation process P2. The approach process P3 of the chuck part 26 is started. The rotation speed of the turntable 8 is set to be equal to that in the first example of the molding operation. Then, all of the entry process P3 of the molded product chuck part 26, the eject ejection process P4, the chucking process P5 of the molded product chuck part 26, the eject return process P6, and the retracting process P7 of the molded product chuck part 26 are all performed. The table rotation process P2 is temporally overlapped, and the table rotation process P2 and the retracting process P7 of the molded product chuck portion 26 are completed at the same time. When these processes P2 and P7 are completed, the mold closing / clamping process P8 is performed. I'm trying to get started. In the fifth example of such a molding operation, the molding cycle time is further shortened as compared with the first example of the molding operation by the time Tm in which the mold opening process P1 and the table rotation process P2 overlap. be able to.

  FIG. 9 is a diagram showing a process transition of a sixth example of the molding operation in the injection molding machine of the present embodiment. The sixth example of the molding operation differs from the fifth example of the molding operation in the rotational speed of the rotary table 8. In the sixth example of the molding operation, the sixth example of the molding operation is more than the fifth example. The rotation speed of the rotary table 8 is set to a high speed, and the time of the table rotation process P2 in FIG. 9 is shorter than the time of the table rotation process P2 in FIG. In the sixth example of the molding operation, when the table rotation process P2 is completed, the eject return process P6 and the retracting process P7 of the molded product chuck portion 26 are sequentially performed. When the retracting process P7 is completed, the mold closing / clamping process is performed. P8 is executed. In the sixth example of such a molding operation, the molding cycle time equivalent to that of the fifth example of the molding operation can be set.

  FIG. 10 is a diagram showing a process transition of the seventh example of the molding operation in the injection molding machine of the present embodiment. In the seventh example of the molding operation, when the lowering of the arm 25 and the molded product chuck part 26 is allowed during the mold opening process P1, the entry process P3 of the molded product chuck part 26 is started. The entry process P3 and the eject ejection process P4 are temporally overlapped with the mold opening process P1, and when the mold opening process P1 and the eject ejection process P4 are completed at the same time, the table rotation process P2 is started and simultaneously the molded product. The chucking process P5 of the chuck portion 26 is started, and the rotation speed of the turntable 8 is set to be equal to that in the first example of the molding operation. Then, the chucking process P5, the eject return process P6, and the retracting process P7 of the molded product chuck portion 26 are temporally overlapped with the table rotating process P2, and after the retracting process P7 of the molded product chuck portion 26 is completed. The table rotation process P2 is continued, and when the table rotation process P2 is completed, the mold closing / clamping process P8 is started. In the seventh example of such a molding operation, the molding cycle time equivalent to that in the first example of the molding operation can be set.

  FIG. 11 is a diagram illustrating a process transition of an eighth example of the molding operation in the injection molding machine according to the present embodiment. The eighth example of the molding operation differs from the seventh example of the molding operation in the rotational speed of the rotary table 8. In the eighth example of the molding operation, the eighth example of the molding operation is more than the seventh example. The rotation speed of the rotary table 8 is set to a high speed, and the time of the table rotation process P2 in FIG. 11 is shorter than the time of the table rotation process P2 in FIG. In the eighth example of the molding operation, the retracting process P7 of the molded product chuck portion 26 is completed simultaneously with the completion of the table rotation process P2, and the mold closing / clamping process P8 is started when the processes P2 and P7 are completed. It has become. In the eighth example of the molding operation, the molding cycle time is further increased as compared with the seventh example of the molding operation because the time of the table rotation process P2 is shorter than that of the seventh example of the molding operation. It can be shortened.

  FIG. 12 is a block diagram showing the configuration of a control system that controls the molding operation as described above in the present embodiment. In FIG. 12, reference numeral 31 denotes a system controller that controls the entire injection molding machine including peripheral machines such as the molded product take-out machine 11, and the system controller 31 includes various applications created in advance and deployed in the work area. Program, various operating condition setting data, measurement information from various sensors (position sensor, pressure sensor, safety confirmation sensor, etc.) arranged in each part of the injection molding machine, and from various control systems of the injection molding machine Various control systems of the injection molding machine are controlled based on the state confirmation information and time information. Reference numeral 32 denotes an operation condition setting storage unit that holds various operation condition setting data in a rewritable manner, and executes each example of the molding operation operation described with reference to FIGS. 4 to 11 in the operation condition setting storage unit 32. Data for this purpose is also stored together. Data for executing each example of the molding operation includes the rotation speed of the rotary table 8, the start timing of the table rotation process P2, the start timing of the entry process P3 of the molded product chuck portion 26, and the like. The operator of the injection molding machine arbitrarily sets it on the setting screen of the display device provided in the injection molding machine.

  In FIG. 12, reference numeral 33 denotes a table rotation control unit that drives and controls a table rotation servomotor (not shown) that is a rotation drive source of the rotary table 8, and 34 denotes a drive source that is not shown. A mold opening / closing control unit for driving and controlling the mold opening / closing servo motor, 35A is a weighing control unit for driving and controlling a measuring servo motor (not shown) which is a metering drive source of the injection device (A) 3A, and 36A is an injection device (A) An injection control unit 35B for driving and controlling an injection servo motor (not shown) that is a drive source for injection of 3A, and 35B is a servo motor for measurement (not shown) that is a drive source for measuring the injection device (B) 3B. A metering control unit 36B that controls driving, an injection control unit 37B that controls driving of an injection servo motor (not shown) which is an injection driving source of the injection device (B) 3B, and an ejection driving unit 37 (not shown) of the ejection device. An eject control unit 38 that controls the ejection of the ejecting core 23 by operating an eject drive source based on a drive signal from the eject control unit 37 and moving the ejecting core 23 through an appropriate mechanism, It is a molded product take-out control unit that drives and controls various drive sources of the molded product take-out machine 11 to operate the arm 25 and the molded product chuck unit 26. These control units 33, 34, 35A, 35B, and 36A , 36B, 37, 39 operate based on a command from the system controller 31.

  The system controller 31 refers to the setting contents of the operating condition setting storage section 32 and controls each of the control sections 33, 34, 35A, 35B, 36A, 36B, 37, 39 according to the setting contents, as described above. Such operations as in the first to eighth examples of the molding operation are performed.

  As described above, in the present embodiment, the molded product 24 is attached to the fixed mold 21 by opening the mold, and the rotation of the turntable 8 to which the movable mold 22 is attached interferes with the operation. Since the ejecting operation can be performed without any effect, at least a part of the operation of the molded product take-out machine 11 is overlapped with the rotating operation of the rotary table 8 in time, or molding related to the ejecting operation is performed. The operation period of the table rotation can be effectively used as the operation period of at least a part of other processes by temporally overlapping the operation of at least a part of the article take-out machine, Therefore, in the injection molding machine using the rotary table, it is possible to effectively shorten the molding cycle time.

  In the above-described embodiment, an example of horizontal opening / closing (horizontal clamping) / horizontal injection has been shown. However, a configuration of horizontal opening / closing / vertical injection, a configuration of vertical opening / closing / horizontal injection, and a configuration of vertical opening / closing / vertical injection. Even if it is a structure, this invention is applicable.

It is a front view of the injection molding machine concerning one embodiment of the present invention. It is a top view of an injection molding machine concerning one embodiment of the present invention. It is explanatory drawing which shows typically the mode of operation | movement of the 1st example of shaping | molding driving | operation operation | movement in the injection molding machine which concerns on one Embodiment of this invention. It is explanatory drawing which shows the process transition of the 1st example of shaping | molding driving | operation operation | movement in the injection molding machine which concerns on one Embodiment of this invention. It is explanatory drawing which shows the process transition of the 2nd example of shaping | molding driving | operation operation | movement in the injection molding machine which concerns on one Embodiment of this invention. It is explanatory drawing which shows the process transition of the 3rd example of shaping | molding driving | operation operation | movement in the injection molding machine which concerns on one Embodiment of this invention. It is explanatory drawing which shows the process transition of the 4th example of shaping | molding driving | operation operation | movement in the injection molding machine which concerns on one Embodiment of this invention. It is explanatory drawing which shows the process transition of the 5th example of shaping | molding driving | operation operation | movement in the injection molding machine which concerns on one Embodiment of this invention. It is explanatory drawing which shows the process transition of the 6th example of shaping | molding driving | operation operation | movement in the injection molding machine which concerns on one Embodiment of this invention. It is explanatory drawing which shows the process transition of the 7th example of shaping | molding driving | operation operation | movement in the injection molding machine which concerns on one Embodiment of this invention. It is explanatory drawing which shows the process transition of the 8th example of shaping | molding driving | operation operation | movement in the injection molding machine which concerns on one Embodiment of this invention. It is a block diagram which shows the structure of the control system in the injection molding machine which concerns on one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base frame 2 Type | mold switchgear 3A Injection apparatus (A)
3B Injection device (B)
4 Tailstock 5 Fixed die plate 6 Tie bar 7 Movable die plate 8 Rotary table 9 Injection system base board 10 Rail member 11 Molded product take-out machine 21 Fixed side mold 22 Movable side mold 23 Core for ejector 24 Molded product (2 colors) Molding)
25 Molded Product Ejector Arm 26 Molded Product Ejector Molded Product Chuck Unit 31 System Controller 32 Operating Condition Setting Storage Unit 33 Table Rotation Control Unit 34 Mold Opening / Closing Control Unit 35A Measurement Control Unit 35B Measurement Control Unit 36A Injection Control Unit 36B Injection Control unit 37 Eject control unit 38 Eject device 39 Molded product take-out control unit

Claims (6)

A rotary table in which a plurality of movable molds are attached at predetermined angular intervals is mounted on a movable die plate so as to be rotatable only, and a plurality of fixed molds corresponding to the plurality of movable molds are mounted on the fixed die plate. At a predetermined angle interval, the rotary table is intermittently rotated by a predetermined angle to change the combination of the movable side mold and the fixed side mold, and the movable side mold paired with each other and the Injecting and filling molten resin into the cavities formed by the fixed-side molds respectively, and applying the molded product to the fixed-side molds by mold opening, for projecting the molded products from the fixed-side molds the eject device and an injection molding machine having a controller for controlling the injection molding machine entire operation including the peripheral device such as a demold apparatus to retrieve the extruded molded article by the ejecting device Stomach,
Said controller, said the rotation of the rotary table, the injection molding machine, wherein at least a part of the operation of the demold apparatus, and performs control to temporally overlap. A rotary table in which a plurality of movable molds are attached at predetermined angular intervals is mounted on a movable die plate so as to be rotatable only, and a plurality of fixed molds corresponding to the plurality of movable molds are mounted on the fixed die plate. At a predetermined angle interval, the rotary table is intermittently rotated by a predetermined angle to change the combination of the movable side mold and the fixed side mold, and the movable side mold paired with each other and the Injecting and filling molten resin into the cavities formed by the fixed-side molds respectively, and applying the molded product to the fixed-side molds by mold opening, for projecting the molded products from the fixed-side molds the eject device and an injection molding machine having a controller for controlling the injection molding machine entire operation including the peripheral device such as a demold apparatus to retrieve the extruded molded article by the ejecting device Stomach,
Wherein the controller, an injection molding machine wherein the rotational movement of the rotary table, at least a portion of the operation before disappeared object device, and performs control to temporally overlap. In the injection molding machine according to claim 1 or 2,
The controller performs control to temporally overlap at least a part of the operation of the molded product take-out machine and a part of the operation of the ejecting device in the rotation operation of the turntable. Injection molding machine. The injection molding machine according to claim 3,
The controller includes a rotating operation of the rotary table, an entering operation and a chucking operation of the molded product chuck portion of the molded product take-out machine, a retracting operation from the mold opening space, and a retraction operation of the ejecting device. An injection molding machine that performs control to temporally overlap an eject ejection operation and an eject return operation. The injection molding machine according to any one of claims 1 to 4,
The controller performs control for temporally overlapping a part of the rotation operation of the rotary table with the mold opening operation. The injection molding machine according to any one of claims 1 to 4,
The controller performs control for temporally overlapping a part of the operation of the molded product take-out machine and a part of the operation of the ejecting device in the mold opening operation.

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