JP2009269398A - Injection molding apparatus, method of manufacturing molded product, and method of manufacturing liquid supply component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an injection molding apparatus that sets a suitable injection condition for each shot of different molding objects even when the molding object is changed in each shot such as in die slide injection molding, and to provide a method of manufacturing a molded product and a method of manufacturing a liquid supply component. <P>SOLUTION: The product is produced by the first shot for carrying out an injection molding of various molding members in a mold assembly 17 for die slide injection molding using the same heating cylinder 36, and the second shot for bonding the various molding members. A setting part 71 sets a metering condition and an injection condition individually for each shot based on operation of an operation panel 80, and the set contents are memorized in a memory 72 as the first injection condition setting data D1 and the second injection condition setting data D2. An injection control part 55 controls driving of a motor 40 for injection based on the first injection condition setting data D1 to perform the first shot, and controls driving of the motor 40 for injection based on the second injection condition setting data D2 to perform the second shot. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an injection molding machine for injecting molten resin for resin molding, a method for manufacturing a molded product, and a method for manufacturing a liquid supply component.

  Conventionally, when performing injection molding of a molded product, an injection molding machine that injects a molten resin into a cavity of a mold is used (for example, Patent Documents 1 to 3). For example, Patent Document 1 discloses a die slide type injection molding method using an injection molding machine. In the die slide injection molding method, a plurality of molded parts are molded at the same time in the first shot, then the movable mold of the mold is moved so that the two molded parts are opposed to each other and then clamped. A single resin product is manufactured by joining both molded parts with the molten resin injected in the second shot. And a resin product is manufactured continuously by repeating the molding cycle including these two shots.

  Conventionally, an injection molding machine is configured to repeat shots under the same injection conditions. For this reason, when a product is manufactured by a die slide type injection molding method, it is filled with a first shot (primary injection) for molding a molded part and a second shot (secondary injection) for joining each molded part. Since the amount of resin to be greatly varied, problems such as difficulty in adjusting and managing the amount of injected resin, and wasteful consumption of resin at the time of joining shots arise. In order to solve this problem, for example, Patent Document 3 discloses a die slide type injection molding mold structure that can make the injection amount constant each time it is injected into a mold cavity when performing die slide type injection molding. Has been. If injection molding is performed using this die slide type injection mold structure, molding of the left and right halves and the joining of the left and right halves formed in the previous shot are performed together in one shot. Therefore, it is possible to make the injection amount injected every shot constant. However, since the molding and joining of the halves are performed in the same shot, the injection conditions are the same for the molding and joining of the halves.

  Further, Patent Document 3 discloses an injection molding apparatus that can switch injection conditions. This is because when the same molded product (the same molding object) is manufactured, the material of the molding material and the manufacturing lot are different. Even if the injection molding apparatus and the mold to be used are different, the filling process is switched to the pressure holding process at an appropriate timing.

  Furthermore, in Patent Document 4, the injection and pressure holding processes are performed a plurality of times during one molding (one cycle), and the timing of filling the resin by cavity is controlled by a runner opening / closing device provided in the molding die, An injection molding machine is disclosed in which cavities of different shapes (capacities) are not filled with resin at the same time but are filled at different times to stabilize the amount of resin filled in each cavity. In addition, this Patent Document 4 describes a structure in which the resin required for filling the entire cavity is calculated in the next molding cycle before mold opening, and a plurality of injections and pressure holdings performed in one cycle. A configuration is disclosed in which the amount of resin necessary for filling in the next injection and pressure-holding step is measured at each step.

JP-A-62-87315 JP-A-4-331117 JP-A-8-39632 JP 7-40393 A

  By the way, when manufacturing a molded product by the die slide type injection molding method, a first shot for molding a plurality of types of molded parts, and a second shot for injection into a joining cavity for joining a plurality of types of molded parts, Therefore, since the resin volume to be filled and the resin shape to be filled are different, strictly speaking, appropriate injection conditions (filling conditions such as injection speed and injection time, pressure holding value, pressure holding time, etc.) for each shot. Pressure holding conditions exist). However, conventional injection molding machines cannot change injection conditions for each shot unless a multicolor molding machine such as a two-color molding machine is used. Therefore, even though the resin volume and resin shape to be filled differ greatly, each shot must be performed under the same injection conditions, which may cause, for example, generation of defective products, There was a problem that it took time to determine the injection conditions suitable for both. Of course, in the case of die slide type injection molding that molds multiple types of molded parts with different resin materials, it is necessary to use a multicolor molding machine, but multiple types of molded parts are die slide type using the same resin material. In the case of performing injection molding, there is a problem that a multicolor molding machine must be used even though the same resin material is used. In addition, the injection molding apparatus of Patent Document 3 is substantially the same even when there is a difference in the material of the molding material, the manufacturing lot, or the mold when the molten resin is injected into the cavity having the same shape. Since the injection timing is only adjusted based on the amount of change in the injection pressure so that the injection conditions are maintained, the above problem is similarly applied even when used for die slide injection molding. appear.

  Further, in the injection molding machine described in Patent Document 4, the injection and pressure holding steps are performed a plurality of times during one molding (one cycle), or the injection and pressure holding are performed during one molding (one cycle). Although the measurement process is performed a plurality of times, the molding conditions between the processes such as injection and pressure holding performed a plurality of times are not described, and the molding conditions were not changed between the plurality of processes in one molding cycle. It is understood as a thing. This is because, in the “Problem to Solve the Invention” column of Patent Document 4, in the molds having different cavity shapes, that is, capacities, even if the molding is performed under a certain molding condition, It is clear from the description that the variation in the weight of the molded product of the cavity is much larger than that in the case where all the cavities have the same shape, and this causes the variation in the weight of the molded product and the accuracy of the molded product.

  In the case of a mold for obtaining a plurality of products such as lenses having different shapes, as listed in the “Problem to Solve the Invention” column of Patent Document 4, there is not much difference in capacity due to the difference in shape between cavities. Not big. However, in the die slide type injection molding method disclosed in Patent Document 1, the capacity between the cavities is greatly different between the molding of a plurality of molded parts and the molding of their joints. In injection molding using such molds whose capacities are greatly different between a plurality of cavities, all moldings performed within one molding cycle are performed under the same molding conditions within a single molding cycle. It becomes very difficult to ensure the weight of the molded product and the accuracy of the molded product required for the product. Therefore, in an injection molding machine in which the molding conditions cannot be changed within one molding cycle, it is possible to perform a plurality of moldings with greatly different injection resin amounts in the same molding cycle using a mold having greatly different cavity capacities. There was a problem that it was practically difficult from the viewpoint of the accuracy of the molded product.

  The present invention has been made in view of the above-described problems, and the object thereof is to provide an appropriate injection for each different shot of the molding object even when the molding object is changed for each shot as in die slide type injection molding or the like. An object of the present invention is to provide an injection molding machine, a method for manufacturing a molded product, and a method for manufacturing a liquid supply component, which can set conditions.

  The present invention is an injection molding machine having an injection device having at least one injection cylinder for injecting molten resin, and a mold clamping device capable of attaching a mold as an injection destination of the injection device, A setting means capable of setting a molding cycle including a plurality of injection shots of different molding objects and individually setting different injection conditions for each of a plurality of injection shots injected from the same injection cylinder in the molding cycle; Storage means for storing molding cycle setting data indicating the setting contents of the molding cycle set by the setting means and injection condition data indicating setting contents of the injection conditions set for each injection shot, and the molding cycle setting The injection cycle and the mold clamping device are driven based on the data to execute the molding cycle, and the same injection cylinder is used in the molding cycle. A control means for driving and controlling the injection device based on the injection condition data corresponding to the injection shot read from the storage means to switch the injection condition for each injection shot. The gist.

  According to this invention, the setting means sets a molding cycle including a plurality of injection shots with different molding objects, and the injection conditions are individually set for each of a plurality of injection shots injected from the same injection cylinder within the molding cycle. Set to These set molding cycle setting data and individual injection condition data for each injection shot are stored in the storage means. The control means drives and controls the injection device and the mold clamping device based on the molding cycle setting data to execute the molding cycle, and when executing a plurality of injection shots by the same injection cylinder in the molding cycle, Based on the corresponding injection condition data, the injection condition is switched for each injection shot. Therefore, when a molding cycle including a plurality of injection shots by the same injection cylinder is performed, injection molding can be performed under an appropriate injection condition according to the molding target even if the injection shot is by the same injection cylinder.

  In the injection molding machine of the present invention, the setting means can individually set the weighing conditions for each injection shot in addition to the injection conditions, and the storage means sets the weighing set by the setting means. Weighing condition data indicating the setting contents of the conditions is stored, and when the control means performs a plurality of injection shot weighing processes by the same injection cylinder in the molding cycle, the measurement condition data read from the storage means is stored in the weighing condition data. It is preferable to switch to the weighing condition according to the injection shot by controlling the driving of the injection device based on this.

  According to this invention, since the measuring condition can be set for each injection shot by the setting means, even if the volume (size) of the molding object is different, an appropriate amount of molten resin suitable for the volume can be measured. For example, it is not necessary to dispose excess resin during injection molding of a molding object with a small volume, or to provide a mechanism for suppressing the amount of molten resin injected into the mold side by the cushion amount.

In the injection molding machine according to the present invention, it is preferable that the setting means can individually set a filling condition and a pressure holding condition as the injection condition for each injection shot.
According to the present invention, when performing a plurality of injection shots by the same injection cylinder in the molding cycle, it is possible to switch to a filling condition and a pressure holding condition according to the injection shot, so that different molding objects are injected by a plurality of shots by the same injection cylinder. Even when it is molded, the occurrence of defects in each molding object can be reduced.

  In the injection molding machine of the present invention, it is preferable that the injection device performs a plurality of injection shots constituting the molding cycle by injecting molten resin into different cavities of the same mold with the same injection cylinder.

  According to the present invention, a plurality of injection shots in a molding cycle are performed by injecting molten resin into different cavities of the same mold with the same injection cylinder constituting the injection device. Since different molding members (molding objects) can be molded using the same resin and the same mold, it is possible to cope with high-mix low-volume production.

  In the injection molding machine of the present invention, the setting means includes a display means for displaying a profile defined by the injection conditions for each set injection shot in a graph, and changes the shape of the graph displayed on the display means By an operation means for performing an operation, a display control means for receiving an operation input for changing the shape of the graph by the operation means and changing the shape of the graph displayed on the display means, and the display control means It is preferable that the apparatus further includes condition changing means for changing the injection condition data by reflecting the change contents based on the changed shape of the graph on the injection condition.

  According to the present invention, the profile defined from the injection condition can be confirmed on the graph displayed on the display means, and when the operation for changing the shape of the graph is performed using the operation means, the display control means displays the profile on the display means. The shape of the displayed graph is changed according to the operation. Then, the change contents are reflected on the injection conditions by the condition changing means, so that the injection condition data is changed. For this reason, the injection condition setting profile can be finely set by changing the shape of the graph, compared to a configuration in which the injection condition is simply input numerically.When setting different injection conditions for each injection shot in the same injection cylinder, It becomes easier to set a more appropriate injection condition that can offset as much as possible the influence of the previous injection condition caused by a little molten resin remaining at the time of the injection shot of the molding object before the different conditions.

The injection molding machine of the present invention is an injection molding machine used by attaching a die slide type injection molding die device to the mold clamping device, and the setting means performs a plurality of injection shots by the same injection cylinder. It is configured to be able to set a molding cycle for die slide type injection molding including
The control means, when performing a molding cycle for die slide type injection molding, as the plurality of injection shots, a first shot for molding a plurality of types of molding members at a time by injection of molten resin by the injection cylinder, A direction that intersects the mold opening / closing direction with the first mold holding the first molding member and the second mold holding the second molding member among the plurality of types of molding members after opening the mold after the end of the first shot. After mold clamping after the die slide of the mold to be moved relative to the mold, the molten resin is injected into the bonding cavity formed at the joint between the first molded member and the second molded member in the mold. It is preferable to perform the second shot for joining the first and second molded members.

  According to this invention, when performing a die slide type injection molding by setting a plurality of injection shots in a molding cycle, a first shot for molding a plurality of types of molding members (first molding member and second molding member); The second shot for joining the first molded member and the second molded member is performed by injection under different injection conditions from the same injection cylinder. Therefore, the die slide type injection molding can be performed by injection from the same injection cylinder of the injection molding machine, and moreover, the first portion in which the first and second molding members are injection molded is injection molded at the joining portion. Even if two shots have a small resin volume to be injected and the resin shape to be filled is relatively long and different, injection molding can be performed under appropriate injection conditions (and weighing conditions) according to each volume and shape. For this reason, since it is not necessary to perform the first and second shots by injection from different injection cylinders, for example, injection molding for two-color molding provided with a plurality of injection cylinders although the resin material is the same. No need to use a machine.

  The present invention relates to a method of manufacturing a molded product in which a plurality of types of molding members are injection molded by an injection molding machine using the same mold, and the molten resin is different from the same mold from the same injection cylinder of the injection molding machine. When manufacturing a molded product by performing primary injection and secondary injection sequentially injected into the cavity, primary injection for injecting molten resin into the first cavity of the mold is performed according to the first injection condition. A primary injection step of molding the first molded member; and a secondary injection step of performing secondary injection of injecting molten resin into the second cavity of the mold under a second injection condition different from the first injection condition. This is the summary.

  According to the present invention, the first molding member and the second molding are performed by performing the primary injection and the secondary injection sequentially injecting into different cavities of the same mold from the same injection cylinder of the injection molding machine under different injection conditions. A molded member can be manufactured, and the same effect as the invention of the injection molding machine can be obtained.

  The present invention is a method for manufacturing a molded article by die slide injection molding, and includes primary injection and secondary injection for injecting molten resin into different cavities of the same mold from the same injection cylinder of an injection molding machine. A primary injection step of molding a plurality of types of molded members at a time by performing a primary injection for injecting a molten resin into a cavity of the mold in accordance with a first injection condition, With the first mold and the second mold constituting the mold being held by the different types of molding members, the first mold and the second mold are moved in the mold opening / closing direction to the joining position where the different types of molding members face each other. A mold slide step for moving the mold in the intersecting direction and clamping the mold, and a secondary injection for injecting a molten resin at a joining location for joining the different types of molding members is the primary injection. And gist that a secondary injection step carried out in a second injection condition made.

  According to the present invention, when performing the die slide type injection molding, the first shot and the second shot can be performed using the same injection cylinder, and the same effect as the invention of the injection molding machine can be obtained. .

  In the measurement process in the primary injection step, the measurement is preferably performed under a first measurement condition, and in the measurement process in the secondary injection step, the measurement is preferably performed under a second measurement condition different from the first measurement condition. .

  According to the present invention, since the measurement conditions are switched for each injection shot, even if the volume (size) of the molding object is different, an appropriate amount of molten resin suitable for the volume can be measured. The amount of resin discarded during the injection molding can be increased, and a mechanism for suppressing the amount of molten resin injected into the mold side by the cushion amount can be omitted.

  In the method of manufacturing a molded article according to the present invention, in the die slide type injection molding, the first measurement condition has a larger measurement value than the second measurement condition, and the first injection condition is compared with the second injection condition. It is preferable to set the injection speed to be high and the holding pressure to be high.

  According to the present invention, primary injection is performed under the first measurement condition and the first injection condition in the first shot for forming a plurality of types of molded members, and the first shot is performed in the second shot for bonding a plurality of types of molded members. Weighing is performed under a second weighing condition having a weighing value smaller than the weighing condition, and secondary injection is performed under a second injection condition where the injection speed is lower and the holding pressure is lower than in the first injection condition. Therefore, when performing die slide type injection molding using the same resin material, a plurality of injection shots can be performed using the same injection cylinder.

  The present invention provides a method for manufacturing a liquid supply component, which includes a support portion in which a flow path for supplying a liquid to a liquid ejecting head is formed, and a supply needle joined to the support portion so as to communicate with the flow path. Then, the support portion and the supply needle are manufactured by performing primary injection and secondary injection in which molten resin is sequentially injected into different cavities of the same mold from the same injection cylinder of the injection molding machine. A primary injection step of injecting a molten resin into the first cavity of the mold according to a first injection condition to form one of the support portion and the supply needle; and A secondary injection step of performing secondary injection for injecting molten resin into the second cavity under a second injection condition different from the first injection condition and molding the other of the support portion and the supply needle. The gist.

  According to this invention, the primary injection and the secondary injection, which are sequentially injected from the same injection cylinder of the injection molding machine into different cavities of the same mold, are performed under different injection conditions, so that the support portion and the supply needle are It can be manufactured under injection conditions suitable for each, and the same effect as the invention of the injection molding machine can be obtained.

  The present invention provides a liquid supply component having a support part in which a flow path for supplying a liquid to a liquid ejecting head is formed and a supply needle joined to the support part in a state of communicating with the flow path. A method for manufacturing a liquid supply part manufactured by slide injection molding, wherein primary injection and secondary injection are performed in which molten resin is injected into different cavities of the same mold from the same injection cylinder of an injection molding machine, respectively. A primary injection step of forming the support portion and the supply needle at a time by performing primary injection for injecting molten resin into the cavity of the mold according to a first injection condition when manufacturing a liquid supply component; When the support part and the supply component are joined to the first mold and the second mold while the support part and the supply needle are held by the first and second molds constituting the mold, respectively. Mold until placed in position A mold slide step for relatively moving in a direction intersecting the closing direction and clamping the mold, and a secondary injection for injecting molten resin into a cavity at a joint location for joining the support portion and the supply needle And a second injection step for joining the support portion and the supply needle by performing the second injection under a second injection condition different from the primary injection.

  According to the present invention, when performing the die slide type injection molding, the first shot and the second shot are performed by using the same injection cylinder, thereby forming the support portion and the supply needle and joining the support portion and the supply needle. Therefore, the same effect as that of the invention of the injection molding machine can be obtained.

The schematic block diagram which shows the injection molding machine in one Embodiment. (A)-(e) The schematic diagram which shows a setting screen. The graph which shows the injection conditions of (a) primary injection and (b) secondary injection, respectively. (A) The exploded perspective view of a product (molded article), (b) The perspective view of a product. (A)-(j) The typical side sectional view explaining die slide type injection molding. The flowchart which shows a die slide type | mold injection molding process. The flowchart which shows the injection operation process of an injection device.

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a schematic diagram showing an electrical configuration of an injection molding machine. The injection molding machine 10 includes an injection device 12 (extruder) for injecting molten resin into the mold device 11, and a mold clamping device 13 for opening and closing and mold clamping of the mold constituting the mold device 11. And a control device 14 for controlling each of the devices 11 to 13.

  The mold clamping device 13 includes a fixed platen 15 and a movable platen 16. The mold device 11 is mounted on the fixed platen 15 and the movable mold 19 of the mold 17 is mounted on the movable platen 16 so that the mold device 11 is a mold clamping device. 13 is attached. A cavity 17a is formed inside the mold 17 in a closed state where the fixed mold 18 and the movable mold 19 are joined. The mold apparatus 11 of this embodiment is for die-slide molding, and the movable mold 19 is in the mold opening / closing direction (left-right direction in FIG. 1) with respect to the fixed mold 18 and in the vertical direction perpendicular to the mold opening / closing direction. Slide is possible. In the present embodiment, the fixed mold 18 and the movable mold 19 constitute a first mold and a second mold.

  The movable platen 16 is configured to be movable in the mold opening / closing direction of the mold 17 by a hydraulic cylinder 20 constituting the mold clamping device 13, and the mold 17 is closed by the protrusion of the rod of the hydraulic cylinder 20. The mold 17 is configured to open when the rod of the cylinder 20 is retracted. The power of the hydraulic cylinder 20 is also used as a clamping force for clamping the mold 17. The movable die 19 is configured to be movable in the vertical direction by a die slide cylinder 21 (for example, a hydraulic cylinder). The cylinder 21 is driven in a direction in which the rod protrudes or retreats with the mold 17 opened, and the relative position in the vertical direction of the movable mold 19 with respect to the fixed mold 18 is changed. It is possible to change the shape of the cavity formed, that is, the molding object.

  Further, the mold clamping device 13 is provided with a cylinder 22 for driving the ejector pin 23 to project the molded product (product) from the mold 17 when the mold is opened at the end of molding. In FIG. 1, only two ejector pins 23 are shown, but they are also provided at other locations necessary for removing the molded product. In addition, the mold apparatus 11 of the present embodiment incorporates an oblique cylinder 25 capable of projecting a slide pin 24 for forming an oblique hole (flow path or the like) in the molded product.

  The mold apparatus 11 is provided with a heater 26 for heating the mold 17 to a desired temperature and a temperature sensor 27 for detecting the temperature of the mold 17. Although only one temperature sensor 27 is shown in FIG. 1, actually, a plurality of different molded products are formed at a time in the first shot described later, but at this time, the wall surface temperature of each cavity for each molded product is individually set. 2 to 5 temperature sensors 27 are attached to one type of cavity so that the wall temperature of the cavity for the second shot can be individually detected. Further, the heater 26 is constituted by, for example, a plurality of heaters capable of individual temperature control, and can form a temperature distribution so that different temperature settings can be made for each cavity of each mold 17. The control device 14 performs feedback control (temperature control) of the energization amount to the heaters 26 at various locations so that the inner wall surface temperature of each cavity for each molded product detected by each temperature sensor 27 becomes a set target temperature. A predetermined temperature distribution is formed in the mold 17.

  In the hydraulic cylinder 20 and the ejector pin cylinder 22 constituting the mold clamping device 13, the mold clamping control unit 31 in the control device 14 is provided with a valve switching unit 29 provided on a hydraulic circuit using the pump 28 as a hydraulic pressure generation source. The oil pressure is individually controlled by switching the opening and closing of the oil passage.

  The cylinder 21 for sliding the movable mold 19 in the vertical direction and the slant cylinder 25 for the slide pin are arranged on the same hydraulic circuit in which the mold control unit 32 in the control device 14 uses the pump 28 as a hydraulic pressure generation source. Hydraulic control is performed individually by switching control of the provided valve switching unit 30 and switching the opening and closing of the oil passage. Further, the mold control unit 32 adjusts the heating temperature of the mold 17 by controlling the energization amount of the heaters 26 at various places for heating the mold based on the detected temperature from the temperature sensor 27. The mold apparatus 11 of the present embodiment is for die slide molding, and can mold two types of molding members at a time with the first shot. Then, two types of cavity portions for molding these two types of molded members, and two types of molded members molded in the first shot are used for joining in which molten resin is injected to join in the second shot The temperature control of the mold 17 is performed so that the cavity portion has a heating temperature suitable for each.

Next, the configuration of the injection device 12 will be described.
The injection device 12 is a device for injecting molten resin into the cavity 17a of the mold 17, and has a heating cylinder 36 into which an injection screw 35 is inserted so as to be movable in the axial direction. The injection screw 35 is disposed in the heating cylinder 36 so as to be rotatable and movable in the axial direction. The heating cylinder 36 is provided with a hopper 37 for supplying a molding material at a position close to the rear part of the injection screw 35 (right side in FIG. 1). The molding material (resin raw material) introduced from the hopper 37 into the heating cylinder 36 is heated and plasticized by being kneaded and sheared while being transferred to the nozzle 36a (injection cap) side by the rotation of the injection screw 35. Is done. A band heater 38 for assisting heating for plasticization is provided on the outer peripheral surface of the heating cylinder 36.

  The propulsive force in the front-rear direction (left-right direction in FIG. 1) of the injection screw 35 is given by the driving force of an injection motor 40 (for example, a servo motor) provided at the rear end of the injection device 12. The rotational force of the injection motor 40 is transmitted to the ball screw 44 via a belt 43 (for example, a timing belt) wound around the pulleys 41 and 42. A nut 45 that moves forward and backward by rotation of the ball screw 44 is fixed to a moving body 46 (pressure plate). The movable body 46 is provided so as to be movable in the front-rear direction on a base frame (not shown) by a guide means such as a linear guide (not shown). The forward / backward movement of the moving body 46 is transmitted to the injection screw 35 via a pressure sensor 47 (for example, a load cell), an intermediate shaft 48, a bearing 49, and an injection shaft 50 provided coaxially. .

  A rotational force of a rotation motor 53 (for example, a servo motor) is transmitted to the injection shaft 50 via a belt 51 wound between a groove portion on the outer peripheral surface thereof and a pulley 52. When the rotational force of the rotation motor 53 is transmitted to the injection shaft 50 via the pulley 52 and the belt 51, the injection screw 35 rotates together with the injection shaft 50.

  The injection shot in which the injection device 12 injects the molten resin includes a measuring step of measuring and storing a required amount of the molten resin on the tip side of the injection screw 35 in the heating cylinder 36, and advancing the injection screw 35 with the measured molten resin. And an injection step of injecting into the cavity 17a of the mold 17. The injection process is performed in a pressurized state for filling the cavity 17a with the molten resin, and for the purpose of preventing the backflow of the molten resin filled in the mold 17 and the amount of weight loss due to the shrinkage in the cooling process of the molten resin. And maintaining the pressure holding step.

  In the measuring step, the molten resin is stored in a chamber on the nozzle 36 a side that opens in front of the injection screw 35, that is, at the front end of the heating cylinder 36, by retreating the injection screw 35 in the heating cylinder 36. The amount of molten resin stored in front of the injection screw 35 gradually increases, and the pressure acts on the injection screw 35 to retract the injection screw 35. By measuring the amount of retraction, the front of the injection screw 35 is measured. The amount of molten resin stored in the container, that is, the amount of molten resin to be injected in the next injection step is measured.

  In the filling process performed first among the injection processes, the molten resin stored in front of the injection screw 35 is injected from the nozzle 36a by the injection screw 35 moving forward in the heating cylinder 36 by driving the injection motor 40. Then, the cavity 17a of the mold 17 is filled. At this time, since the force by which the injection screw 35 pushes the molten resin is detected as the injection pressure by the pressure sensor 47, the filling process can be performed while monitoring the injection pressure. The filling process is a process in which the injected molten resin is filled in the cavity 17a, and the speed control is performed so that the filling proceeds according to the set injection speed.

  At the end of the filling process, that is, the switching timing from the filling process to the pressure holding process, the injection amount calculated from the cross-sectional area of the heating cylinder x the amount of advancement of the injection screw reaches the known cavity filling amount or a specified amount just before that. This is determined by the fact that the injection screw 35 has reached the switching position xsw which is the current screw position.

  In the pressure holding process, pressure control is performed so as to maintain the set pressure holding value. That is, in the pressure holding step, after the filling of the molten resin into the cavity 17a of the mold 17 is completed, the injection pressure detected by the pressure sensor 47 is held in a state where the desired pressure is maintained. The holding pressure is adjusted by adjusting the position of the injection screw 35. If the injection screw 35 is retracted from the relatively high pressure state at the end of the filling process, the injection pressure is lowered, and the position of the injection screw 35 is adjusted so that the injection pressure becomes the holding pressure value.

  The control device 14 includes a main control unit 54 that controls the entire control, an injection control unit 55 that controls the injection motor 40, and a measurement control unit 56 that controls the rotation motor 53. Further, the control device 14 includes a position counter 58 that counts input pulses from the encoder 57 that detects the rotation of the injection motor 40 and counts a count value indicating the position of the injection screw 35. The screw position x counted by the position counter 58 is indicated as a distance in the backward direction from the origin with the most advanced position (position when moved to the most nozzle side) as the origin.

  Based on the screw position x grasped as the count value of the position counter 58 and the rotational speed information grasped from the input pulse count value per unit time from the encoder 59 of the motor 53 for rotation, the weighing control unit 56 The rotation motor 53 is driven and controlled via the motor driver 60. In this case, the metering control unit 56 controls the rotation speed of the injection screw 35 by controlling the rotation speed of the rotation motor 53 so that the detected rotation speed of the rotation motor 53 becomes the target rotation speed. Then, in the process in which the injection screw 35 moves backward while the injection screw 35 rotates, the measurement control unit 56 reaches the measurement completion position xo corresponding to the preset measurement value, the screw position x grasped as the count value of the position counter 58. Then, the rotation drive of the rotation motor 53 is stopped.

  Further, the injection control unit 55 drives and controls the injection motor 40 via the motor driver 61 based on the screw position x grasped as the count value of the position counter 58 and the injection pressure detected by the pressure sensor 47. . In this case, the injection control unit 55 controls the rotation speed of the injection motor 40 so that the injection speed obtained from the number of input pulses per unit time from the encoder 57 becomes the target injection speed in the filling process. Perform injection speed control. Further, the injection control unit 55 monitors the screw position x grasped as the count value of the position counter 58 during the filling process, and when the screw position x reaches the switching position xsw, the pressure is maintained from the filling process (injection speed control). It is determined as the switching timing to the process (injection pressure control). Further, the injection control unit 55 controls the injection pressure control by controlling the rotation position of the injection motor 40 so that the injection pressure grasped from the detection value from the pressure sensor 47 becomes the target injection pressure in the pressure holding process. I do. Instead of the position counter 58 that counts the input pulses from the encoder 57, a position sensor that can detect the position of the moving body 46 is provided, and the screw position x can be detected based on the detection signal from the position sensor.

  The injection control unit 55 performs various controls in the injection process (filling process and pressure holding process), an injection position monitoring unit 62, an injection speed control unit 63, an injection pressure control unit 64, a first timer 65, and a second timer. 66.

  The control device 14 also includes a setting unit 71 that controls setting of molding cycle items and injection conditions, and a memory 72 for storing set molding cycle setting data, injection condition setting data, and the like. Further, the control device 14 manages how many shots (Nth shot) in the molding cycle are shot, and the Nth shot corresponding to the Nth shot managed by the shot management unit 73. A switching unit 74 is provided for switching the reading destination position (leading address) of the memory 72 so that the injection condition setting data is read out to the measurement control unit 56 and the injection control unit 55.

  The injection molding machine 10 includes an operation panel 80 for inputting various setting data. The operation panel 80 includes a display device 81 (for example, a liquid crystal display device) and an operation unit 82 such as a keyboard. The injection molding machine 10 according to the present embodiment can set injection conditions individually for each injection shot and set one molding cycle including a plurality of injection shots having different injection conditions. The memory 72 stores display data for causing the display device 81 to display a setting screen for performing various settings such as the number of injection shots constituting the molding cycle, the order of injection shots, and the injection conditions for each injection shot. Yes. The setting unit 71 displays a setting screen on the display device 81 via the display driver 83 based on the display data, and the user operates the operation unit 82 to set a molding cycle, an injection condition for each injection shot, and the like. It is possible. The setting unit 71 stores the input setting data in the memory 72, and the injection condition setting data D1 and D2 input and set for each shot are stored for each injection shot in the memory 72 as shown in FIG. Store in the area. In the example of FIG. 1, two types of injection shots “A” and “B” indicate injection condition setting data D1 and D2 stored in the memory 72 when a molding cycle to be executed in this order is set. ing. In this way, when a molding cycle in which the two types of injection shots A and B are performed in the order of “A → B” is set, the memory 72 stores the first injection condition setting data D1 that is the injection condition of the injection shot A. And second injection condition setting data D2 that is an injection condition of the injection shot B is stored.

  For example, when N types of injection shots A, B,..., Z are specified with different injection conditions in this order and a molding cycle is set, individual injections of injection shots A, B,. As the condition setting data, the first injection condition setting data, the second injection condition setting data,..., The Nth injection condition setting data are stored in the corresponding shot storage area of the memory 72. The “molding cycle” in the present embodiment refers to a molding cycle for each shot (general molding cycle) when molding is performed including individual shots with different injection conditions and different shot conditions. Indicates a whole cycle including a plurality of.

FIG. 2 shows an example of a setting screen displayed on the display device 81.
FIG. 2A shows a molding cycle setting screen 90. The setting screen 90 is a setting screen for setting each process constituting one molding cycle and setting the execution order of each specified process. The process names are sequentially input to the rectangular frame-shaped process input field 91 by operating the operation unit 82. In the example of the setting screen 90, “mold closing” → “sliding pin protrusion” → “injection A” → “sliding pin retracting” → “mold opening” → “die slide” → “filter set” → “mold closing” → “Injection B” → “Die opening” → “Product removal” is set in the process input field 91 as a process name. When the input of each process constituting the molding cycle is completed, the OK button 93 is operated to confirm the setting contents.

  Next, injection conditions are set for the injection process in the molding cycle. 2B and 2C show the injection condition setting screens 94 and 95, respectively. In the example of FIG. 2, two types of injections A and B are set as the injection process of the molding cycle. When a plurality of different injection processes are set in one molding cycle as described above, injection conditions can be set for each injection process. For example, the injection conditions for injection A shown in FIG. 2B are set. The injection condition setting screen 94 for setting the injection condition and the injection condition setting screen 95 for setting the injection condition for injection B shown in FIG. As shown in FIGS. 2B and 2C, the injection condition setting screens 94 and 95 are provided with input fields 96 for measuring, injection speed, injection pressure, injection time, pressure holding, and pressure holding time, respectively. The setting value for each item is input to the input field 96 by the operation of the unit 82. When the input of the injection conditions is completed, the set content is confirmed by operating the OK button 97. Although omitted in FIGS. 2B and 2C, in addition to the maximum injection pressure (injection pressure upper limit value), the switching position xsw from the filling process to the pressure holding process (pressure holding start position), etc. Settings such as cooling time, mold closing speed, mold opening speed, mold clamping force, screw rotation speed, mold temperature (temperature for each molded product in the same shot), and the like can also be set.

  2D and 2E show injection condition correction setting screens 98 and 99 in which the setting contents on the injection condition setting screens 94 and 95 are displayed in a graph and the setting can be corrected (changed). For example, when the correction button 100 is operated on the correction setting screens 98 and 99, an active state in which correction is possible is entered. In this state, select a dot on the graph line and change its setting value, or use the direction buttons to shift the dot position up / down / left / right to change the waveform shape of the graph and adjust the settings. It is possible. In the examples of the correction setting screens 98 and 99, a graph showing each waveform profile of the injection pressure P, the injection speed V, and the screw position x (injection position) is shown. Also good. When the OK button 101 is operated on the correction setting screens 98 and 99, the corrected injection condition setting contents are fixed.

  Returning to FIG. 1, the setting unit 71 stores the setting contents set on the various setting screens 90, 94, 95, 98, and 99 shown in FIG. 2 in the memory 72 as injection condition setting data. The injection conditions set for each shot on the setting screens of FIGS. 2B to 2E are the first injection condition setting data D1 of the first shot (injection A) and the second injection of the second shot (injection B). The data is stored as condition setting data D2 in a storage area for each shot in the memory 72, respectively. In detail, the setting unit 71 is an injection condition setting unit for setting an injection speed, an injection time, a pressure holding value, a pressure holding time, and a measurement condition setting unit for setting a measurement value, a screw rotation speed, and the like. With.

  The injection molding operation of the injection molding machine 10 is based on the injection condition setting data DN (where N = 1, 2,..., M) read from the memory 72 by the metering control unit 56 and the injection control unit 55. 53 and the injection motor 40 are driven and controlled. At this time, the switching unit 74 and the shot management unit 73 in the control device 14 switch the injection condition setting data to be read from the memory 72 by the measurement control unit 56 and the injection control unit 55.

  The shot management unit 73 manages whether or not the next shot is the Nth shot (where N = 1, 2,..., M) in the molding cycle being executed. For example, the shot management unit 73 includes a counter that counts the number of shots in the molding cycle, sets an initial value N = 1 at the start of the molding cycle, and counts at the timing before the start of the next shot every time one shot is completed. Is incremented by "1".

  The switching unit 74 switches the reading position from the memory 72 so that the injection condition setting data to be read from the memory 72 becomes the Nth injection condition setting data corresponding to the number N of shots managed by the shot management unit 73. That is, when the number of shots managed by the shot management unit 73 is “N”, the switching unit 74 switches the read position from the memory 72 to the top address of the storage area of the Nth injection condition setting data. By switching the reading position of the memory 72, the measurement control unit 56 and the injection control unit 55 are made to read the Nth injection condition setting data corresponding to the next Nth shot. Of course, the switching unit 74 only manages the leading address of the reading destination, etc., and the measurement control unit 56 and the injection control unit 55 directly access the memory 72 by referring to the starting address designated by the switching unit 74 and the Nth injection. A configuration for reading the condition setting data can also be adopted. Here, the measurement control unit 56 reads the measurement condition data (measurement value, screw rotation speed, etc.) from the Nth injection condition setting data DN, and the injection control unit 55 outputs the injection condition data (injection speeds V1, V2, injection pressure P). The injection times Ta and Tb, holding pressure values P1 and P2, holding pressure times T1 and T2, switching positions xasw and xbsw (see FIG. 3)) are read.

  It should be noted that a plurality of shots can be set under the same injection condition in one molding cycle. In this case, the setting unit 71 creates table data for assigning the injection condition setting data corresponding to the number of shots N and stores it in the memory 72. During the molding operation, the switching unit 74 switches the reading start address so that the Kth injection condition setting data assigned with reference to the table data based on the shot count N is read. For example, when the injection “A → B → A” is set within one cycle, the switching unit 74 sets the first injection condition set by referring to the table data based on the number of shots N = 1 and N = 3. Switching to the head address of the data D1, and switching to the head address of the second injection condition setting data D2 assigned by referring to the table data based on the shot number N = 2.

  When the metering control unit 56 moves to the metering step, the metering operation is performed on the injection screw 35 by rotating the rotation motor 53 and rotating the injection screw 35. Then, when the screw position x of the injection screw 35 that retreats while rotating reaches the measurement completion position xo when the amount of the molten resin stored on the tip side of the injection screw 35 in the heating cylinder 36 reaches the measurement value. The rotation drive of the rotation motor 53 is stopped.

  The injection position monitoring unit 62 in the injection control unit 55 monitors whether or not the screw position x has reached the switching position xsw in the filling process in which the injection screw 35 moves forward to inject molten resin.

  The injection speed control unit 63 sets the injection speed V determined from the number of input pulses per unit time from the encoder 57 in the filling process according to the current screw position x obtained from the position counter 58. The speed of the injection motor 40 is controlled via the motor driver 61 so as to match the data (target injection speed). Thus, the forward speed of the injection screw 35 is controlled to coincide with the target injection speed corresponding to the screw position x at that time. That is, the filling process is performed by the injection speed control unit 63 performing position-speed control of the injection screw 35. In this example, in the filling process, the injection pressure is managed based on the detected pressure from the pressure sensor 47 so that the injection pressure is within the allowable range of the injection pressure in the setting data.

  In addition, the injection pressure control unit 64 uses the motor driver 60 to match the detected pressure value (back pressure detection value) from the pressure sensor 47 with the set data (target pressure value) of the pressure value in the pressure holding process. The position of the injection motor 40 is controlled. Thereby, in the pressure-holding step, the pressure-holding pressure at which the injection screw 35 pressure-holds the molten resin after filling in the cavity 17a is controlled to a target.

  The first timer 65 starts timing at the start of the injection process, and measures an injection time that is an elapsed time from the start of the injection process. In addition, the second timer 66 starts measuring time at the start of pressure holding, and measures the pressure holding time that is an elapsed time from the pressure holding start time. The injection pressure control unit 64 controls the position of the injection motor 40 via the motor driver 60 when the pressure keeping time measured by the second timer 66 reaches the pressure keeping time (target pressure keeping time) in the setting data. Then, the pressure-holding step is completed by retracting the injection screw 35. In this way, the injection pressure control unit 64 performs pressure-time control, whereby the pressure holding process is performed.

  The main control unit 54 controls the entire control by the control device 14 and also controls the entire molding cycle, and controls each of the units 31, 32, 55, 56, 58, 71, 73, 74 and the like constituting the control device 14. An instruction is given to execute predetermined processing or predetermined control. The memory 72 can store a plurality of (for example, 50 to 200) molding cycle setting data set so far, and according to the number by inputting the molding cycle number on the operation panel 80. It is possible to carry out a molding cycle. Further, each unit 31, 32, 54, 55, 56, 58, 71, 73, 74, etc. constituting the control device 14 may be software constructed by the CPU executing a program, or an integrated circuit Etc., or may be configured by cooperation of software and hardware.

  FIG. 4 shows an example of a molded product (product) molded by the injection molding machine 10 performing a molding cycle in the present embodiment. FIG. 4A shows an exploded perspective view of a molded product (product), and FIG. 4B shows a molded product manufactured in a molding cycle. The molded product of this example is a liquid supply component to which a recording head of a printer is attached. The liquid supply component includes a case head 110 as a support portion, four filters 111, and four ink supply needles (hereinafter simply referred to as “supply needles 112”). In a first shot (primary molding) constituting the molding cycle, the case head 110 and the four supply needles 112 shown in FIG. The filter 111 shown in FIG. 4A is set inside four annular protrusions 110a formed on each supply port side of the four supply paths 113 (flow paths) of the case head 110, and has four annular shapes. The four supply needles 112 are joined to the convex portion 110a by the second shot, whereby the product 115 (liquid supply component) shown in FIG. 4B is manufactured.

  Specifically, after molding the molded parts 110 and 112 by the first shot (primary injection), the movable mold 19 is slid to arrange the molded parts 110 and 112 at positions facing each other. And after setting the four filters 111 inside the four annular convex parts 110a of the case head 110, the mold is closed and a second shot (secondary injection) is performed. In this second shot, molten resin is injected into each joint portion of the case head 110 and the four supply needles 112, and the molded parts 110 and 112 are joined with the filter 111 interposed therebetween.

  That is, by using the die slide molding die device 11, the primary injection for molding the case head 110 and the four supply needles 112 and the molding parts 110 and 112 are joined with the filter 111 interposed therebetween. The secondary injection is performed in one molding cycle. And the product 115 shown in FIG.4 (b) is continuously manufactured by repeating this shaping | molding cycle. Of course, a plurality of molds 17 may be formed, and a plurality of products may be manufactured for each molding cycle. In the present embodiment, a liquid ejection head unit is manufactured by attaching a recording head (liquid ejection head) (not shown) to the surface of the product 115 opposite to the supply needle 112. As shown in FIG. 4 (a), the case head 110 has an oblique hole 110b formed therethrough, and the mold pin 11 moves the slide pin 24 back and forth to form the hole 110b. An oblique cylinder 25 is provided.

  Next, the control method of the injection molding machine according to this embodiment will be described according to the flowcharts shown in FIGS. 6 and 7 with reference to FIG. In the flowchart of FIG. 6, in order to manufacture a recording head molded product, a die slide type injection mold device 11 is attached to the mold clamping device 13 and a molding cycle for die slide type injection molding is set. The processing operation (die slide type injection molding process) of the injection molding machine in the case of having performed is shown. Further, in FIG. 5, for easy understanding of the die slide type injection molding, the shape of the molded product and the shape of the cavity are drawn in a schematic diagram different from the actual shape of the recording head product.

  In a state before the start of molding, the mold apparatus 11 is disposed at an initial position (first mold clamping position) where the movable mold 19 is lowered. Prior to the start of molding, the entire injection device 12 shown in FIG. 1 is brought close to the mold 17, and the nozzle 36a of the injection device 12 is brought into contact with the injection port of the cavity 17a to be in an injection molding start state (FIG. 5A). reference). A molding cycle is started from this state.

  First, in step S10 shown in FIG. 6, primary mold closing is performed. That is, the mold clamping control unit 31 of the control device 14 controls the valve switching unit 29 to project the rod of the hydraulic cylinder 20 so that the movable platen 16 moves in the mold closing direction and the mold 17 is closed. Then, mold clamping is performed (see FIG. 5B).

  In the next step S20, the slide pin 24 is protruded. That is, the mold control unit 32 of the control device 14 switches and controls the valve switching unit 30 to project the rod of the oblique cylinder 25, so that the cavity 17a penetrates the cavity portion for molding the case head 110. The slide pin 24 is protruded (see FIG. 5B).

  In the next step S30, the primary injection A is performed as the first shot. That is, the first shot is obtained by controlling the rotation motor 53 and the injection motor 40 based on the first injection condition setting data D1 read from the memory 72 by the measurement control unit 56 and the injection control unit 55 of the control device 14, respectively. Primary injection A (metering step, filling step, pressure holding step) is performed. As a result, as shown in FIG. 5C, the molten resin is injected into the cavity 17 a having a shape that allows the case head 110 and the supply needle 112 to be molded in one shot with respect to the mold 17.

  In step S40, the slide pin 24 is retracted. That is, the mold control unit 32 of the control device 14 controls the valve switching unit 30 to retract the rod of the oblique cylinder 25, thereby retracting the slide pin 24 (see FIG. 5D).

  In step S50, primary mold opening is performed. That is, the mold clamping control unit 31 of the control device 14 controls the valve switching unit 29 to retract the rod of the hydraulic cylinder 20 so that the movable platen 16 moves in the mold opening direction and the mold 17 opens. Is performed (see FIG. 5E).

  In the next step S60, the movable mold 19 is slid. That is, the mold control unit 32 of the control device 14 controls the valve switching unit 30 to project the rod of the slide cylinder 21, thereby sliding the movable mold 19 upward in the direction orthogonal to the mold opening / closing direction. As a result of this sliding, the movable mold 19 is arranged at the second mold clamping position, and the case head 110 on the movable mold 19 side and the supply needle 112 on the fixed mold 18 side are arranged in a state where the respective joint portions are opposed to each other. (See FIG. 5F).

  In step S70, the filter 111 is set. That is, the control device 14 operates a filter setting device (not shown) to set (insert) the filters 111 one by one inside the annular convex portion 110a of the case head 110 (see FIG. 5F).

  In step S80, the secondary mold is closed. That is, the mold clamping control unit 31 of the control device 14 controls the valve switching unit 29 to project the rod of the hydraulic cylinder 20 so that the movable platen 16 moves in the mold closing direction and the mold 17 is closed. And mold clamping is performed. In the mold closed state, the joint portion between the case head 110 and the supply needle 112 abuts, and a groove-like cavity (joining cavity) is formed along the outer periphery of the joint portion (see FIG. 5G). .

  In the next step S90, the secondary injection B is performed as the second shot. That is, the second shot is obtained by controlling the rotation motor 53 and the injection motor 40 based on the second injection condition setting data D2 read from the memory 72 by the measurement control unit 56 and the injection control unit 55 of the control device 14, respectively. Secondary injection B (measuring step, filling step, pressure holding step) is performed. As a result, as shown in FIG. 5 (h), the molten resin was injected into the groove-like cavity extending along the outer periphery of the joint portion between the case head 110 and the supply needle 112 with respect to the mold 17, and the injection was performed. The case head 110 and the supply needle 112 are joined by resin.

  In step S100, secondary mold opening is performed. That is, the mold clamping control unit 31 of the control device 14 controls the valve switching unit 29 to retract the rod of the hydraulic cylinder 20 so that the movable platen 16 moves in the mold opening direction and the mold 17 opens. Is performed (see FIG. 5I).

  In step S110, the product (molded product) is taken out. That is, the mold clamping control unit 31 of the control device 14 controls the valve switching unit 29 to retract the rod of the hydraulic cylinder 20 by a predetermined amount to further increase the mold opening amount of the mold 17. Then, the mold clamping control unit 31 controls the valve switching unit 29 to project the rod of the cylinder 22, thereby projecting the ejector pin 23 and removing the product from the mold 17 (see FIG. 5 (j)). .

  In step S120, it is determined whether or not the molding cycle has ended. If the molding cycle is not finished, the processes in steps S10 to S110 are repeatedly executed until it is determined that the molding cycle is finished (Yes in S120). In this way, the product 115 is continuously manufactured.

  Next, the control contents (injection processing routine) of the measurement control unit 56 and the injection control unit 55 that control the injection process (S30 and S90 in FIG. 6) will be described in detail based on the flowchart of FIG. Note that the injection processing routine shown in FIG. 7 shows the control contents of a plurality of injection operations performed in one molding cycle. When the measurement control unit 56 and the injection control unit 55 receive an instruction from the main control unit 54 to execute the first shot after the molding cycle starts, the measurement control unit 56 and the injection control unit 55 start the injection processing routine of FIG. Is repeated almost every time it is received from the main control unit 54. In the injection process, in addition to the metering control unit 56 and the injection control unit 55, the shot management unit 73 and the switching unit 74 are also activated.

  First, in step S210, the number of shots N = 1 is set. That is, the shot management unit 73 sets, for example, the count value N of a counter for managing the number of shots to an initial value N = 1.

  In the next step S220, the injection condition setting data DN for the Nth shot is read. That is, since the switching unit 74 switches the start address of the injection condition setting data to be read from the memory 72 according to the number of shots N managed by the shot management unit 73, the weighing control unit 56 and the injection control unit 55 are switched. The Nth injection condition setting data DN is read from the head address designated by the unit 74. At this time, the measurement control unit 56 reads out the measurement condition data (measurement value, screw rotation speed, etc.) from the Nth injection condition setting data DN, and the injection control unit 55 outputs the injection condition data (injection speed, injection pressure, injection time, Read pressure holding time, pressure holding time, switching position, etc.).

  In step S230, plasticization and weighing are performed. That is, the measurement control unit 56 drives the rotation motor 53 to rotate, and speed-controls the rotation motor 53 according to the set screw rotation speed of the measurement condition. As a result, the injection screw 35 rotates at the set screw rotation speed. As the injection screw 35 rotates, the molding material (resin raw material) supplied from the hopper 37 is fed forward while being kneaded and plasticized, and the molten resin is stored on the tip side of the injection screw 35 in the heating cylinder 36. As the stored molten resin increases, the injection screw 35 moves backward. The measurement control unit 56 monitors the backward screw position x, and when the screw position x reaches the measurement completion position xao corresponding to the measurement value (see FIG. 3A), the drive of the rotation motor 53 is stopped. As a result, an amount of molten resin corresponding to the measured value is stored on the tip side of the injection screw 35. The amount of molten resin measured at this time corresponds to the amount of resin necessary for molding the two molded parts 110 and 112.

  In step S240, filling is performed. That is, the injection control unit 55 rotates and drives the injection motor 40 to advance the injection screw 35, thereby starting an injection operation (filling process) for extruding the molten resin stored on the tip side. Specifically, the injection control unit 55 controls the injection motor 40 so that the injection speed obtained from the number of input pulses per unit time from the encoder 57 becomes the set injection speed V1 corresponding to the screw position x at that time. Speed control. As a result, the injection screw 35 moves forward at a set injection speed V1 (see FIG. 3A) corresponding to the screw position x. At this time, the first timer 65 starts timing simultaneously with the start of the injection operation, and the injection control unit 55 monitors the elapse of the injection time Ta based on the time measured by the first timer 65.

  Further, in this filling step, the injection position monitoring unit 62 monitors whether or not the screw position x has reached the first shot switching position xasw (step S250). In this filling step, as shown in the graph shown in FIG. 3A, the injection screw 35 starts moving forward from the weighing completion position xao and then moves forward while maintaining the injection speed V1. In this process, the injection pressure P gradually increases as the molten resin is injected into the cavity 17a. Then, when the filling of the cavity 17a is nearing the end (for example, about 95% filling rate) and the screw position x reaches the first shot switching position xasw (see FIG. 3A) (affirmative determination in S250), the filling step Exit.

  In step S260, pressure holding is performed. That is, the injection control unit 55 controls the position of the injection motor 40 so that the injection pressure P detected by the pressure sensor 47 matches the holding pressure value P1. As a result, the injection screw 35 is disposed at a position x1 (see FIG. 3A) where the holding pressure value P1 can be maintained. However, as the resin in the cavity 17a cools and contracts, the injection screw 35 advances slightly to maintain the pressure holding value P1. Simultaneously with the start of the pressure holding process, the second timer 66 starts measuring the pressure holding time, and the injection control unit 55 monitors the passage of the pressure holding time T1 of the first shot based on the time measured.

  In step S270, it is determined whether the injection time or the pressure holding time has elapsed. That is, it is determined whether the time measured by the first timer 65 has reached the injection time or the time measured by the second timer 66 has reached the pressure holding time. If either one of the injection time and the pressure holding time has elapsed (Yes determination in S270), the process proceeds to step S280 to stop the pressure holding. That is, the injection control unit 55 controls the injection motor 40 to retract the injection screw 35 to a position where the pressure detected by the pressure sensor 47 is reduced to the initial pressure.

  In step S290, it is determined whether or not the molding cycle is complete. If the current shot count N has not reached the total shot count M during the molding cycle (No in S290), in step S300, the shot management unit 73 increments the shot count N to N = N + 1. The process returns to step S220.

  In step S220, the injection condition setting data DN for the Nth shot is read out. At this time, since the number N of shots is incremented and N = 2, this time, the measurement control unit 56 and the injection control unit 55 obtain the second injection condition setting data D2 from the read address of the memory 72 designated by the switching unit 74. read out.

  In the next step S230, the measurement control unit 56 performs plasticization / measurement based on the measurement condition data (measurement value, screw rotation speed, etc.) in the second injection condition setting data D2. As the injection screw 35 rotates, the molding material (resin raw material) supplied from the hopper 37 is fed forward while being kneaded and plasticized, and the measured value of the second shot on the tip side of the injection screw 35 in the heating cylinder 36. An amount of molten resin corresponding to the amount is stored. At this time, when the screw position x of the injection screw 35 that retreats as the stored molten resin increases reaches the measurement completion position xbo corresponding to the measurement value (see FIG. 3B), the measurement control unit 56 The drive of the rotation motor 53 is stopped. The amount of molten resin measured at this time corresponds to the amount of resin required for joining the two molded parts 110 and 112.

  In step S240, the second shot is filled. That is, the injection control unit 55 rotationally drives the injection motor 40 to advance the injection screw 35, thereby starting an injection operation (filling process) for extruding the previously measured molten resin. Specifically, the injection control unit 55 controls the injection motor 40 so that the injection speed obtained from the number of input pulses per unit time from the encoder 57 becomes the set injection speed V2 corresponding to the screw position x at that time. Speed control. As a result, the injection screw 35 moves forward at a set injection speed V2 (see FIG. 3B) corresponding to the screw position x. At this time, the first timer 65 starts measuring simultaneously with the start of the injection operation, and the injection control unit 55 monitors the elapse of the injection time Tb based on the time measured by the first timer 65.

  In this filling process, the injection position monitoring unit 62 monitors whether the screw position x has reached the first shot switching position xbsw (step S250). In this filling step, as shown in the graph of FIG. 3B, after the injection screw 35 starts to advance from the metering completion position xbo, it advances while maintaining the injection speed V2. At this time, the injection pressure P gradually increases as the molten resin is injected into the bonding cavity. Then, when the filling of the bonding cavity is nearing completion (for example, about 95% filling rate) and the screw position x reaches the second shot switching position xbsw (see FIG. 3B) (affirmative determination in S250), the filling is performed. The process ends.

  In step S260, pressure holding is performed. That is, the injection control unit 55 controls the position of the injection motor 40 so that the injection pressure P detected by the pressure sensor 47 matches the pressure holding value P2 (see FIG. 3B). As a result, the injection screw 35 is disposed at a position x2 (see FIG. 3B) where the holding pressure value P2 can be maintained. However, as the resin in the bonding cavity cools and contracts, the injection screw 35 advances slightly to maintain the pressure holding value P2. Simultaneously with the start of the pressure holding process, the second timer 66 starts measuring the pressure holding time, and the injection control unit 55 monitors the passage of the pressure holding time T2 of the second shot based on the time measured.

  Then, when the injection time Tb or the pressure holding time T2 of the second shot has elapsed (Yes determination in S270), the pressure holding is stopped (S280). If it is determined that the molding cycle is completed in the next step S290 after the pressure holding is stopped (N = M), the injection processing routine is ended. However, when the molding cycle is repeatedly performed, the next molding cycle is started, and the injection processing routine is similarly executed in the first injection and the second injection. In addition, it is good also as a structure by which the measurement process of the next shot is advanced during a pressure holding process.

As described above, according to the present embodiment, the following effects can be obtained.
(1) The injection molding machine 10 can set a molding cycle including a plurality of shots by operating the operation panel 80 and can individually set injection conditions (filling conditions and pressure holding conditions) of each shot in the molding cycle. The injection conditions for a plurality of shots in one molding cycle can be switched for each shot (molding object). Therefore, different molding objects (molded members) (first molded member and second molded member) molded in multiple shots within a single molding cycle are appropriately injected according to their volume (size) and shape. Can be molded. For example, although the injection molding method described in Patent Document 4 performs a plurality of processes such as injection and holding pressure during one molding cycle, conditions such as injection and holding pressure cannot be changed between a plurality of processes. Therefore, when applied to die slide type injection molding, optimum injection conditions could not be set individually for each shot having a large difference in the amount of injected resin. On the other hand, in the injection molding method of the present embodiment, the amount of resin (cavity volume) required for molding the molded parts 110 and 112 in the first shot and the joint portion of the molded parts 110 and 112 in the second shot. Even if the resin amount (cavity volume) differs greatly, optimum injection conditions can be set according to the cavity volume for each shot. Although the cavity shape is greatly different between the first shot and the second shot, an optimum injection condition can be set for each shot in consideration of a large difference in shape in addition to the volume of the cavity. Therefore, the product 115 with high molding accuracy can be stably manufactured by die slide injection molding.

  (2) Particularly in the second shot, insert molding of the filter 111 interposed between the molded parts 110 and 112 is performed together with the joining of the molded parts 110 and 112. In this case, it is necessary to set the injection conditions such that the resin pressure can be sufficiently controlled so that liquid leakage (ink leakage) does not occur around the filter 111 and the filter 111 does not deform. Thus, even when at least one shot among a plurality of shots in one molding cycle also serves as insert molding, optimum injection conditions considering insert molding can be individually set. For this reason, while avoiding deformation of the filter 111 due to the molding pressure, the molded parts 110 and 112 can be joined in a state where a sufficient resin is impregnated around the filter 111 and no liquid leakage occurs.

  (3) For each shot in the molding cycle, filling conditions (injection speed (filling speed) according to screw position x), holding pressure conditions (holding value and holding time) and injection time (= filling time + holding time) Pressure time) and the like can be individually set, and the set injection conditions are switched for each shot. Therefore, it is possible to perform injection molding under appropriate filling conditions and holding pressure conditions corresponding to different volumes and shapes of molding objects.

  (4) Since the measurement conditions of each shot in the molding cycle can be individually set for each shot by operating the operation panel 80, even if the volumes of a plurality of molding objects to be molded in the molding cycle are different, it matches the volume. Appropriate amount of molten resin can be measured. As a result, when different volumes (sizes) of different molding objects (in this example, the two molded parts 110 and 112 and the joined parts of the two molded parts 110 and 112) molded in each shot in the molding cycle are different. However, it is not necessary to discard excess resin during injection molding of a molding member having a small volume, or to provide an extra mechanism for suppressing the amount of molten resin injected into the mold side with a cushion amount.

  (5) When the injection molding machine 10 is used for die-slide type injection molding, when molding a plurality of molded parts, and when performing injection molding of a joint part for joining each molded part, It is possible to perform injection molding by switching to appropriate weighing conditions and injection conditions (filling conditions and pressure holding conditions) according to the volume and shape of the material.

  For example, in the first shot for molding a plurality of molded parts at a time, the amount of metered resin can be increased, and in the second shot for molding a joint portion, the amount of metered resin can be decreased. Even when a plurality of shots with different resin amounts are performed, it is possible to suppress wasteful consumption of the resin in the second shot with a small resin amount. Further, in the first shot for molding a plurality of molded parts, the injection speed and holding pressure are increased compared to the second shot for molding the joining portion, so that the first and second shots have different molding objects under the same injection conditions. Compared with the conventional apparatus for injection molding, the incidence of defective products such as burrs and sink marks can be reduced.

  (6) In the die slide type injection molding with different molding objects in the first shot (multi-part molding) and the second shot (joint part molding), the appropriate injection conditions suitable for the molding object for each shot are different, Conventionally, since each shot is performed under different injection conditions, it is necessary to use a two-color molding machine provided with a plurality of heating cylinders even if the molding object is the same resin material. On the other hand, in this embodiment, since the weighing condition and the injection condition can be switched between the first shot and the second shot, different molding objects of the same resin material can be molded using the same heating cylinder 36. Therefore, as long as the same resin material is used, there is no need to use a two-color molding machine, and a single-color injection molding machine is used to perform die slide injection molding under individual weighing conditions and injection conditions suitable for each molding object. It can be carried out.

  (7) By repeating a molding cycle for die slide type injection molding including a first shot for molding a plurality of molded parts at a time and a second shot for joining a plurality of molded parts molded in the first shot. The product can be continuously produced each time one molding cycle is performed. Therefore, it is possible to increase production efficiency compared to conventional manufacturing methods in which multiple types of molded parts are manufactured by different types of injection molding machines, and each molded part is joined by a method such as welding in the subsequent process. . In addition, since one part of the mold 17 is used to mold and join the parts, the mold replacement work can be reduced, and it is possible to cope with a variety of small-quantity production.

  (8) The shape of the displayed graph can be changed by shifting the dots on the graph indicating the injection condition profile displayed on the display device 81 by operating the operation unit 82. When the changed graph is confirmed, the injection condition can be corrected by reflecting the change contents of the graph in the injection condition setting data. Therefore, compared to a configuration in which the injection condition is set only by numerical input, the rate of change of the injection condition profile with time, the rate of change with screw position, and the like can be set finely with a curve curve or the like. As a result, when different injection conditions are set for each shot with the same heating cylinder 36, the influence of the previous shot due to the fact that a little molten resin from the previous shot with different injection conditions remains, It is possible to easily adjust the setting contents to an appropriate injection condition that can cancel the influence as much as possible, and it becomes easier to set a more appropriate injection condition.

In addition, embodiment is not limited above, You may change as follows.
(Modification 1) The configuration in which the molten resin is injected into different cavities of the same mold is not limited to the configuration based on the die light injection molding method that is performed using a die slide type mold apparatus. For example, different types of molded members are formed by individually injecting molten resin into different cavities (a plurality of cavities including at least a first cavity and a second cavity) of the same mold with different injection shots from the same heating cylinder. It is also possible to do it. In this case, the mold apparatus is provided with a hot water channel switching structure or a hot water channel switching mechanism for switching the hot water channel so that the cavity of the molten resin injection destination can be switched. For example, in FIG. 6, S60 (movable slide) is performed for the purpose of switching the hot water channel. Of course, the hot water channel can be switched by the operation of the hot water channel switching mechanism on the mold apparatus side. In this case, S50 to S80 may be replaced with the step of switching the hot water channel by the operation of the hot water channel switching mechanism. According to this configuration, a plurality of types of molded members can be obtained by injecting a molten resin from the same heating cylinder using a single injection molding machine under weighing conditions and injection conditions suitable for each of a plurality of types of molded members. Can be produced continuously for each molding cycle. Therefore, it can cope with a variety of small-quantity production. For example, a plurality of parts (molding members) (for example, a support part and a supply needle) constituting the liquid supply part may be molded under different injection conditions and measurement conditions. In this case, the joining of a plurality of parts may be performed by a method other than injection molding (for example, welding or adhesion by an adhesive), or injection molding other than die slide injection molding (for example, an injection molding machine different from that for component molding). You may go on. Of course, it is good also as a structure which joins these molded products shape | molded by different injection conditions and measurement conditions by a different shot by the die slide injection molding method. In this case, the molding cycle includes a first shot A for injection molding the first molding member, a second shot B for injection molding the second molding member, and a third shot C for joining the first and second molding members. Thus, the molding cycle of “A → B → C” is repeated.

  (Modification 2) It is not limited that the injection conditions are switched for each shot in a molding cycle in which a plurality of injection shots are sequentially repeated. For example, when there are two types of shots A shot and B shot with different injection conditions, for example, “A → A → A → B → B → B” can be set as one molding cycle.

  (Modification 3) The setting unit is not limited to the configuration that is set by operating the operation unit of the setting panel, and a configuration that is set by inserting a memory card and storing the setting data in the storage unit can also be adopted. In short, it suffices if a molding cycle consisting of a plurality of shots can be set in the storage unit and injection conditions can be set individually for each shot. However, the shots with the same injection condition such as “A → A → A → B → B → B” can be set by a single input operation in a batch. The case where the setting is completed once is included in the case where the injection conditions are individually set for each shot.

  (Modification 4) You may apply to the injection molding machine (multicolor molding machine) for multicolor molding. In short, the number of colors of the injection molding machine to be used is not particularly limited as long as a plurality of shots with different molding targets are set in the same injection cylinder and the molding cycle is set. For example, in a two-color molding machine, two types of injection shots A and B are set in the first injection device, and only one type of injection shot C is set in the second injection device and a molding cycle “A → B → C” is set. To do. In this case, the injection molding machine repeats “A → B → C”, but the first injection device repeats “A → B” and changes the injection conditions for each shot, thus satisfying the requirements of the present invention. . Of course, a molding cycle may be constructed by setting a plurality of shots for all the multicolor injection devices.

  (Modification 5) A mold (mold apparatus) used by being attached to a mold clamping apparatus is not limited to a mold for die slide molding. The molten resin may be injected into different cavities of the same mold attached to the mold clamping device for each injection shot constituting the molding cycle. For example, a configuration in which the molten resin is injected into different cavities of the same mold may be employed by switching the hot water passage (pouring gate) through which the molten resin is injected for each shot on the mold apparatus side.

  (Modification 6) The liquid supply component is not limited to the component of the liquid ejection head unit in which the recording head (liquid ejection head) is attached to the surface opposite to the supply needle. For example, it may be a cartridge holder that is arranged and used on the main body side of the printer and has a supply needle and a support portion. Further, the liquid supply component is not limited to a configuration in which a filter is interposed between the support portion and the supply needle, and may have a configuration in which no filter is interposed.

  (Modification 7) Although insert molding of a filter is performed when a plurality of parts are joined by die slide injection molding, a manufacturing method that does not insert molding of a part such as a filter can also be employed. For example, the case head (supporting portion) and the supply needle may be joined without intervening anything.

  (Modification 8) A part to be insert-molded when joining a plurality of parts by die slide injection molding is not limited to a filter. For example, when manufacturing a liquid supply part with a built-in valve mechanism or a liquid supply part with a built-in pump, insert a valve body (for example, a film) constituting a valve mechanism or a diaphragm (for example, a film) constituting a diaphragm pump. You may shape | mold. In this case, a valve mechanism or a pump is incorporated by insert molding so that a valve body or a diaphragm is interposed between the parts to be joined at the time of a shot for joining a plurality of parts constituting the liquid supply part. Liquid supply parts can be manufactured. In this case, of course, insert molding in which a film is interposed between the support portion and the supply needle may be performed together. When these manufacturing methods are adopted, the resin pressure is set to an appropriate value according to the bending strength of the flexible member such as a valve body or a diaphragm to be insert-molded, as in the case of insert-molding the filter (flexible member). Since the secondary injection step can be performed under such injection conditions, it is possible to suppress the occurrence of defective products that are joined in a state where the flexible member is bent inappropriately.

(Modification 9) A molded product manufactured by an injection molding machine is not limited to a printer component such as a head device. You may manufacture comparatively precise molded parts, such as electronic devices other than a printer.
(Modification 10) The injection conditions are not limited to injection speed, injection time, pressure holding, and pressure holding time. At least one of these can be set individually for each injection shot, and at least one injection condition among the injection speed, injection time, holding pressure, and holding time set individually for each injection shot when the molding cycle is executed May be configured to be switched.

  (Modification 11) In the above embodiment, both the weighing condition and the injection condition can be individually set for each of a plurality of shots in the molding cycle. However, at least the injection condition can be individually set among the weighing condition and the injection condition. Any configuration may be used. In addition, as the injection condition, both the filling condition and the pressure holding condition can be individually set for each shot in the molding cycle, but only one of the filling condition and the pressure holding condition may be set individually. . However, in order to perform appropriate injection molding according to the shape and size of the cavity, it is preferable that the filling conditions can be set individually.

  (Modification 12) The mold apparatus is provided with sensors (detection means) for detecting the actual injection speed of the injected molten resin and the resin temperature, and injection is performed so that the detection values of these sensors are as set values. Correction means for correcting the condition may be provided.

  (Modification 13) The switching timing from the filling process to the pressure holding process is not limited to the time when the screw position x reaches the switching position xsw. The switching timing may be the time when the speed drop amount ΔV of the injection speed V reaches the switching threshold value ΔVsw or the time when the setting condition is satisfied based on both the switching threshold value ΔVsw and the switching position xsw.

  (Modification 14) The mold apparatus may be a hot runner type. In the case of the hot runner method, it is not necessary to open the mold for each shot, so that a plurality of injection shots are continuously molded within one molding cycle.

  (Modification 15) The present invention is not limited to an electric injection molding machine using a motor such as a servo motor as a drive source, but may be applied to a hydraulic injection molding machine using a pump such as an electronically controlled variable swash plate pump as a drive source. Good. Moreover, any of a plunger type, a screw prepla type, an inline screw type, etc. may be employ | adopted for an injection device. Further, a pneumatic drive type mold clamping device may be employed, or a pneumatic drive type mold device may be employed. Further, the drive mechanism of the mold clamping device may be replaced with a direct acting type and may be a toggle type. The injection molding machine is not limited to a horizontal type, and may be a vertical type.

The technical idea grasped from the embodiment and the modifications will be described below.
(1) The apparatus according to any one of claims 1 to 6, further comprising detection means for detecting an injection result of the injection shot, and correction means for changing the injection condition based on the detection result of the detection means. The injection molding machine according to Item.

(2) The method for manufacturing a molded article according to claim 7, wherein the first injection condition is set so that the injection speed is higher and the holding pressure is higher than the second injection condition.
(3) The method for manufacturing a molded article according to claim 8, wherein the first measurement condition is set so that a measurement value is larger than that of the second measurement condition.

  (4) The molded product according to any one of claims 8 to 10, wherein in the secondary injection step, insert molding is performed in which a flexible member is interposed between the different types of molded members. Manufacturing method.

  (5) The method for manufacturing a liquid supply component according to claim 12, wherein in the secondary injection step, insert molding is performed in which a filter is interposed between the support portion and the supply needle.

  DESCRIPTION OF SYMBOLS 10 ... Injection molding machine, 11 ... Mold apparatus, 12 ... Injection apparatus, 13 ... Clamping apparatus, 14 ... Control apparatus, 15 ... Fixed board, 16 ... Movable board, 17 ... Mold, 17a ... Cavity, 18 ... Fixed 19, movable type, 21, slide cylinder, 22, cylinder, 23, ejector pin, 24, slide pin, 25, oblique cylinder, 26, heater, 27, temperature sensor, 28, pump, 29, 30, valve switching , 31 ... Mold clamping control unit, 32 ... Mold control unit, 35 ... Injection screw, 36 ... Heating cylinder as injection cylinder, 36a ... Nozzle, 37 ... Hopper, 40 ... Injection motor, 53 ... Rotation motor, 54... Main control part constituting control means 55. Injection control part constituting control means 56. Measurement control part constituting control means 57 57 Encoder 58 58 Position counter 59 60, 61 ... motor driver, 62 ... injection position monitoring unit, 63 ... injection speed control unit, 64 ... injection pressure control unit, 65 ... first timer, 66 ... second timer, 71 ... setting means, display control means And a setting unit constituting the condition changing unit, 72... A memory as a storage unit, 73... Shot management unit, 74... Switching unit, 80 ... an operation panel constituting the setting unit, 81. Operation unit as operation means, 83... Display driver constituting display control means, 110. Case head as part and support, 112. Supply needle as part, 113. Supply path as flow path, 115. And a product as a liquid supply part, A: primary injection as an injection shot (first shot), B: secondary injection as an injection shot (second shot), D1: first injection conditions Constant data, D2 ... second injection condition setting data, DN ... Nth injection condition setting data, xo, xao, xbo ... measurement completion position, V1, V2 ... injection speed, xsw, xasw, xbsw ... switching position, P1, P2 ... Holding pressure, Ta, Tb ... Injection time, T1, T2 ... Holding pressure time.

Claims (12)

An injection molding machine having an injection device having at least one injection cylinder for injecting molten resin, and a mold clamping device capable of attaching a mold as an injection destination of the injection device,
A setting means capable of setting a molding cycle including a plurality of injection shots of different molding objects and individually setting different injection conditions for each of a plurality of injection shots injected from the same injection cylinder in the molding cycle;
Storage means for storing molding cycle setting data indicating the setting contents of the molding cycle set by the setting means and injection condition data indicating the setting contents of the injection conditions set for each injection shot;
Based on the molding cycle setting data, the injection device and the mold clamping device are driven and controlled to execute the molding cycle, and when performing a plurality of injection shots by the same injection cylinder in the molding cycle, read from the storage means An injection molding machine comprising: control means for driving and controlling the injection device based on the injection condition data corresponding to the injection shot and switching the injection condition for each injection shot. In addition to the injection conditions, the setting means can set the weighing conditions individually for each injection shot,
The storage means stores measurement condition data indicating the setting contents of the measurement conditions set by the setting means,
In the case where a plurality of injection shots are metered by the same injection cylinder in the molding cycle, the control means drives and controls the injection device based on the measurement condition data read from the storage means. 2. The injection molding machine according to claim 1, wherein the weighing condition is switched according to the shot.   The injection molding machine according to claim 1 or 2, wherein the setting means can individually set a filling condition and a pressure holding condition as the injection condition for each injection shot.   4. The injection device according to claim 1, wherein the injection device performs a plurality of injection shots constituting the molding cycle by injecting molten resin into different cavities of the same mold with the same injection cylinder. 5. The injection molding machine according to one item. The setting means includes a display means for displaying a profile defined by the injection condition for each set injection shot in a graph,
Operation means for performing an operation of changing the shape of the graph displayed on the display means;
Display control means for receiving an operation input for changing the shape of the graph by the operation means and changing the shape of the graph displayed on the display means;
5. The apparatus according to claim 1, further comprising condition changing means for changing the injection condition data by reflecting the change contents based on the shape of the graph changed by the display control means on the injection conditions. The injection molding machine as described in any one of Claims. An injection molding machine used by attaching a die slide type injection molding die device to the mold clamping device, wherein the setting means is for die slide type injection molding including a plurality of injection shots by the same injection cylinder. It is configured to be able to set the molding cycle,
The control means, when performing a molding cycle for die slide type injection molding, as the plurality of injection shots, a first shot for molding a plurality of types of molding members at a time by injection of molten resin by the injection cylinder, After opening the mold after the end of the first shot, a direction in which the first mold holding the first molding member and the second mold holding the second molding member among the plurality of types of molding members intersect with the mold opening / closing direction. After mold clamping after the die slide of the mold to be moved relative to the mold, the molten resin is injected into the bonding cavity formed at the joint between the first molded member and the second molded member in the mold. The injection molding machine according to claim 5, wherein the second shot for joining the first and second molding members is performed. A method of manufacturing a molded product in which a plurality of types of molded members are injection molded with an injection molding machine using the same mold,
When manufacturing a molded product by performing a primary injection and a secondary injection in which molten resin is sequentially injected into different cavities of the same mold from the same injection cylinder of the injection molding machine,
A primary injection step of forming a first molded member by performing a primary injection for injecting a molten resin into the first cavity of the mold according to a first injection condition;
A method of manufacturing a molded article, comprising: a secondary injection step of performing secondary injection for injecting molten resin into the second cavity of the mold under a second injection condition different from the first injection condition. A method for producing a molded article by die slide injection molding,
When manufacturing a molded product by performing primary injection and secondary injection in which molten resin is injected into different cavities of the same mold from the same injection cylinder of an injection molding machine,
A primary injection step of performing a primary injection for injecting a molten resin into a cavity of the mold in accordance with a first injection condition to form a plurality of types of molded members at once;
Opening and closing of the first mold and the second mold to the joining position where the different types of molding members face each other while holding the different types of molding members in the first mold and the second mold constituting the mold, respectively. A mold slide step for moving in a direction crossing the direction and clamping the mold;
A molded product comprising: a secondary injection step of performing a secondary injection for injecting a molten resin at a joint location for joining the different types of molded members under a second injection condition different from the primary injection. Manufacturing method.   The weighing is performed under a first weighing condition in the weighing step in the primary injection step, and the weighing is performed under a second weighing condition different from the first weighing condition in the weighing step in the secondary injection step. A method for producing a molded article according to 7 or 8.   In die slide injection molding, the first measurement condition has a larger measurement value than the second measurement condition, and the first injection condition has a higher injection speed and higher holding pressure than the second injection condition. The method for producing a molded product according to claim 9, wherein the method is set as follows. A method for manufacturing a liquid supply component, comprising: a support part in which a flow path for supplying liquid to the liquid ejecting head is formed; and a supply needle joined to the support part in a state communicating with the flow path,
When manufacturing the support portion and the supply needle by performing primary injection and secondary injection in which molten resin is sequentially injected into different cavities of the same mold from the same injection cylinder of an injection molding machine,
A primary injection step of molding one of the support portion and the supply needle by performing a primary injection for injecting a molten resin into the first cavity of the mold according to a first injection condition;
Performing a secondary injection for injecting molten resin into the second cavity of the mold under a second injection condition different from the first injection condition, and forming a second injection step of molding the other of the support portion and the supply needle. A method for manufacturing a liquid supply component, comprising: A liquid supply component having a support part in which a flow path for supplying a liquid to the liquid jet head is formed and a supply needle joined to the support part in communication with the flow path is formed by a die slide injection molding. A method of manufacturing a liquid supply part manufactured by
When manufacturing liquid supply parts by performing primary injection and secondary injection in which molten resin is injected into different cavities of the same mold from the same injection cylinder of an injection molding machine,
A primary injection step of performing the primary injection for injecting the molten resin into the cavity of the mold in accordance with the first injection conditions and molding the support portion and the supply needle at a time;
When the support part and the supply component are joined to the first mold and the second mold while the support part and the supply needle are held by the first and second molds constituting the mold, respectively. A mold slide step for relatively moving in a direction intersecting with the mold opening and closing direction and clamping the mold until it is arranged at the position;
A secondary injection for injecting a molten resin into a cavity at a joining location for joining the support portion and the supply needle is performed under a second injection condition different from the primary injection to join the support portion and the supply needle. A method for manufacturing a liquid supply component, comprising: a secondary injection step.

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