JP2010264491A - Molding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a molding machine which suppresses its overall height by separately preparing a tank or the like. <P>SOLUTION: The molding machine comprises: a molding machine body part 112 including a fixed die plate 11 holding a fixed die, a moving die plate 12 holding a moving die and movable in the die opening/closing direction to the fixed die plate, an injection plunger extruding a molding material to a cavity formed by the fixed die and the moving die and an injection cylinder device 25 preferably of horizontal injection driving the injection plunger; and a pump unit part 154 including a tank storing a working liquid, a pump capable of feeding out the working liquid and a motor driving the pump. The pump unit part is arranged on the body separate from the molding machine body part. The pump unit part is arranged on the side of the injection cylinder device in the fixed die plate. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a molding machine such as a die casting machine.

In a molding machine such as a die casting machine, a driving force for driving each part of the molding machine is required in various processes such as mold opening / closing, mold clamping, injection, and extrusion. As a device for generating this driving force, a hydraulic device is often used.
And the liquid used for this hydraulic apparatus is stored in the tank, and is supplied to each part of the molding machine by the pump.
Patent Document 1 describes an invention in which this tank is arranged in a bed (frame) portion of a molding machine.

JP 2006-75891 A

  However, the technique of Patent Document 1 has a problem that the overall height of the molding machine becomes high because the tank is arranged in the bed (frame) portion of the molding machine.

  An object of the present invention is to provide a molding machine in which a tank or the like is separately created to suppress the overall height of the molding machine.

  The molding machine of the present invention is formed by a fixed die plate that holds a fixed die, a movable die plate that holds a movable die and is movable in a mold opening / closing direction with respect to the fixed die plate, and the fixed die and the movable die. An injection plunger that pushes the molding material into the cavity, an injection cylinder device that drives the injection plunger, a molding machine main body, a tank that stores hydraulic fluid, a pump that can deliver the hydraulic fluid, and the pump A pump unit portion including a motor, and the pump unit portion is disposed separately from the molding machine main body portion, and the pump unit portion includes the injection cylinder of the fixed die plate. It is arranged on the device side.

  Preferably, the injection cylinder device is a horizontal injection, and the pump unit portion is arranged at a position in a side surface direction of the injection cylinder device.

  Preferably, a mold clamping cylinder device that drives the movable die plate, a first pipe that connects the mold clamping cylinder device and the pump unit portion, and a connection between the injection cylinder device and the pump unit portion. And the length of the first pipe is longer than the length of the second pipe.

  Preferably, the first pipe has a first control valve for controlling the hydraulic fluid supplied to the clamping cylinder device, and the second pipe is an operation supplied to the injection cylinder device. A second control valve for controlling the liquid, and the first control valve is disposed in a valve unit configured separately from the pump unit and the molding machine body, and the second control valve The control valve is disposed at a side position of the injection cylinder device.

  Suitably, the said valve unit part is arrange | positioned adjacent to the said pump unit part between the said pump unit part and the said molding machine main-body part.

  Preferably, the extrusion cylinder device disposed in the molding machine main body, the core cylinder device disposed in the molding machine main body, and the piping connecting the extrusion cylinder device and the pump are disposed. A third control valve, and a fourth control valve disposed in a pipe connecting the core cylinder device and the pump, and the third control valve and the fourth control valve are: It is arranged in the valve unit part.

  Preferably, it has a control panel including a control device for controlling a transformer, a switchboard, a first control valve and a second control valve, and the control panel is the molding machine main body part of the pump unit part. It is arranged at the opposite side position.

  Preferably, the pump unit section supplies hydraulic fluid to a plurality of molding machines, and the control panel includes a control device for the plurality of molding machines.

  According to the present invention, it is possible to provide a molding machine in which a tank or the like is separately created to suppress the overall height of the molding machine.

1 is a side view showing a die casting machine according to a first embodiment of the present invention. It is a top view of the die-casting machine of FIG. It is a figure which shows the outline | summary of a structure of the hydraulic circuit for driving various cylinder apparatuses (Clamping cylinder apparatus, a core cylinder apparatus, an injection cylinder apparatus, and an extrusion cylinder apparatus). It is explanatory drawing explaining the control system of the die-casting machine of this invention. It is drawing of the operation panel seen from the A direction of FIG. It is drawing of the valve unit part seen from the B direction of FIG. It is explanatory drawing showing the modification of this invention.

FIG. 1 is a side view showing a die casting machine 1 according to a first embodiment of the present invention.
Note that, in various embodiments described below, the same reference numerals are given to the same configurations, and descriptions thereof are omitted.

The die casting machine 1 has a mold clamping device 3 that holds a main mold 101 including a fixed mold 103 and a movable mold 105 and opens / closes and molds the main mold 101.
Further, the die casting machine 1 injects and fills a core drawing device 5 for inserting and removing the core 107 into and from the main mold 101, and a molten metal (molten metal material) as a molding material into the cavity Ca formed in the main mold 101. An injection device 7 is provided.
In addition, the die casting machine 1 has an extrusion device 9 for extruding a molded product formed by solidification of the molten metal filled in the cavity Ca from the fixed mold 103 or the moving mold 105 (the moving mold 105 in FIG. 1). is doing.

The mold clamping device 3 is constituted by, for example, a toggle type mold clamping device 3.
That is, the mold clamping device 3 is disposed on the opposite side of the fixed die plate 11 to the fixed die plate 11 that holds the fixed die 103, the movable die plate 12 that holds the movable die 105, and the movable die plate 12. The link housing 13 is provided.
Further, the mold clamping device 3 includes a plurality of tie bars 14 hung on the fixed die plate 11 and the link housing 13, a mold clamping cylinder device 15 provided on the link housing 13, and a driving force of the mold clamping cylinder device 15. Is provided with a toggle mechanism 17 for transmitting to the movable die plate 12.
Then, the driving force of the mold clamping cylinder device 15 is transmitted to the moving die plate 12 via the toggle mechanism 17, so that the moving die plate 12 moves in the mold opening / closing direction (left and right direction in FIG. 1), Mold opening and closing and mold clamping are performed.

The core drawing device 5 includes a core cylinder device 19 that drives the core 107.
In the core cylinder device 19, for example, although not shown, the core cylinder tube 19t is fixed to the moving mold 105, and the core piston rod 19r is fixed to the core 107 (see FIG. 3).
In addition, the core extraction apparatus 5 may have an inclined pin or the like.

The injection device 7 includes, for example, a sleeve 21 that communicates with the cavity Ca, an injection plunger 23 that can slide within the sleeve 21, and an injection cylinder device 25 that drives the injection plunger 23.
The molten metal is supplied into the sleeve 21 by a ladle (not shown) and the injection plunger 23 moves forward in the sleeve 21 toward the cavity, whereby the molten metal is injected and filled into the cavity Ca.
The coupling 31 and the injection piston rod 25r will be described with reference to FIG.
Further, the injection device 7 is provided with an accumulator 53 and an injection side direction control valve 47C shown in FIG.

The extruding device 9 has an extruding pin 27 that extrudes the molded product through the movable mold 105 from behind, and an extruding cylinder device 29 that drives the extruding pin 27.
Although not shown, in the extrusion cylinder device 29, the extrusion cylinder tube 29t is fixed to the moving mold 105, and the extrusion piston rod 29r is fixed to the extrusion pin 27.
In the extrusion device 9, the extrusion cylinder tube 29 t may be fixed to the extrusion pin 27 and the extrusion piston rod 29 r may be fixed to the moving mold 105.

As shown in FIG. 1, the die casting machine 1 includes a fixed die plate 11, a movable die plate 12, a link housing 13, a mold clamping device 3 (mold clamping cylinder device 15), a core on a bed 110 (frame) as a base. A drawing device 5 (core cylinder device 19), an extrusion device 9 (extrusion cylinder device 29), and the like are provided.
On the other hand, the injection cylinder device 25 is not provided on the bed 110.
Further, the pump unit portion 154, the valve unit portion 158, the terminal box 156, and the control panel 152 are not arranged on the bed 110, but are configured separately.
In this embodiment, the injection cylinder device 25 is a separate body, not on the bed 110, but the injection cylinder device 25 may be provided on the bed 110.

As will be described in detail with reference to FIG. 4, the control panel 152 is provided with a control device 51 and the like for comprehensively controlling the die casting machine 1.
Further, the control panel 152 is also provided with a distribution panel 179 that distributes power to the devices of each die casting machine 1.

The pump unit 154 is provided with a tank 39 (not shown), a pump 33, a servo driver 45 for controlling the pump 33, and the like.
An electric cable 164 for supplying electric power to the pump unit 154 is wired from the control panel 152. A terminal box 156 for receiving power from the electric cable 164 is disposed.

An injection cylinder side pipe 162 for supplying hydraulic pressure to the injection cylinder device 25 extends from the pump unit 154.
In addition, a valve unit 158 for supplying hydraulic equipment other than the injection cylinder device 25 is disposed in the vicinity of the pump unit 154.
The configuration of the valve unit 158 will be described in detail with reference to FIG.

The valve unit 158 controls hydraulic fluid (for example, oil) pressurized by hydraulic equipment other than the injection cylinder device 25 (clamping cylinder device 15, extrusion cylinder device 29, core cylinder device 19 and the like). Device.
A bed for controlling and supplying pressurized hydraulic fluid from the valve unit 158 to hydraulic equipment other than the injection cylinder device 25 (clamping cylinder device 15, extrusion cylinder device 29, core cylinder device 19 and the like). The part side piping 160 is extended.

  On the side surface of the fixed die plate 11, an operation panel 150 for the user to operate the die casting machine 1 is disposed. The operation panel 150 will be described in detail with reference to FIG.

  FIG. 2 is a plan view of the die casting machine 1 of FIG.

As shown in FIG. 2, a mold clamping device 3, a core drawing device 5, an extrusion device 9, a fixed die plate 11, a moving die plate 12, a link housing 13, and the like are arranged on a bed 110.
The injection device 7 is arranged in the longitudinal direction of the bed 110 (the direction in which the movable die plate 12 moves).
The mold clamping device 3, the core drawing device 5, the extrusion device 9, the fixed die plate 11, the movable die plate 12, the link housing 13, and the like arranged on the bed 110, and the bed 110 are arranged. The non-injection device 7 is a basic component of the die casting machine 1 and is referred to as a “molding machine main body 112”.
In the longitudinal direction of the bed 110 (the direction in which the movable die plate 12 moves), the valve unit 158, the pump unit 154, the terminal box 156, and the control panel 152 are sequentially arranged in the direction in which the injection device 7 is disposed. Have been placed.
That is, the valve unit 158, the pump unit 154, the terminal box 156, and the control panel 152 are disposed on the opposite side of the fixed die plate 11 from the moving die plate 12.

The valve unit 158, the pump unit 154, the terminal box 156, and the control panel 152 are configured and arranged separately from the molding machine main body 112 and independently.
As shown in FIG. 2, the valve unit 158, the pump unit 154, the terminal box 156, and the control panel 152 are arranged in the vicinity of the injection cylinder device 25.
That is, the injection cylinder device 25 is more than the various devices (the clamping cylinder device 15, the extrusion cylinder device 29, the core cylinder device 19, the fixed die plate 11, the moving die plate 12, etc.) arranged on the head 110. It is arranged at a close position.
As shown in FIG. 2, the valve unit portion 158, the pump unit portion 154, the terminal box 156, and the control panel 152 are arranged at the lateral side position of the injection cylinder device 25.

The injection device 7 is mainly composed of an injection cylinder device 25, an accumulator 53, and an injection valve device 159 (a pressure increase side flow control valve 77, an injection side direction control valve 47C, etc. in FIG. 3).
An accumulator 53 is disposed above the injection cylinder device 25. An injection valve device 159 (typically, an injection side direction control valve 47C) and the like are disposed on the side of the injection cylinder device 25 on the pump unit portion 154 side.
As described above, the injection side direction control valve 47C and the like have a role of controlling the pressurized hydraulic fluid supplied from the pump unit 154 via the injection cylinder side pipe 162.

The hydraulic fluid is supplied to the mold clamping cylinder device 15, the extrusion cylinder device 29, the core cylinder device 19, and the like by a bed portion side pipe 160.
The hydraulic fluid supplied from the pump unit 154 is piped and controlled by the valve unit 158, and is supplied to the clamping cylinder device 15, the extrusion cylinder device 29, the core cylinder device 19 and the like by the bed portion side piping 160. .

  Thus, the following effects can be obtained by providing the valve unit 158, the pump unit 154, and the control panel 152 separately from the molding machine main body 112.

First, by using the pump unit portion 154 as one unit, only the pump unit portion 154 can be manufactured separately.
And being able to produce the pump unit part 154 separately has the effect that production can be divided.
Further, when the die casting machine 1 is transported to the user, there is an effect that it can be transported separately as a unit.
Also, when assembled at the user's place, since it is unitized, there is an effect that it can be assembled simply by connecting the electrical system and the hydraulic fluid system.
In addition, since they are unitized, the same pump unit can be shared by various types of die casting machines 1. This has the effect of facilitating inventory adjustment and reducing production costs.

Secondly, it is not necessary to arrange each device constituting the pump unit portion 154 in the bed 110 portion as in the prior art.
Accordingly, the bed 110 only needs to have a function of fixing the fixed die plate 11 and the movable die plate 12 and the like, so that the bed 110 can be thinned (lowered).
The fact that the bed 110 can be made thinner means that the user does not need to climb the stairs or the like by the height of the bed 110 when checking the molding status and operating the operation panel 150. This results in ease of user management and operation.
Furthermore, the fact that the bed becomes thinner means that the overall height of the die casting machine 1 becomes lower. And that the total height of the die-casting machine 1 becomes low facilitates transportation.
In addition, the fact that the total height of the die casting machine 1 is low means that the height of the ceiling of the factory where the die casting machine 1 is installed may be low. And this means that the cost of construction of the factory is reduced, and if it is a factory that has already been constructed and is a conventional die casting machine 1, it can be installed even if it cannot be installed due to the ceiling height limitation. It has the effect of becoming.

By the way, although the part supplied to the injection device 7 among the hydraulic fluid supplied from the pump unit 154 is directly supplied to the injection device 7, the hydraulic fluid supplied to various devices arranged on the bed 110. Is via the valve unit 158.
Originally, it is desirable to supply and control the hydraulic fluid to the injection device 7 collectively by the valve unit 158.
However, the injection device 7 must supply hydraulic fluid to the injection cylinder device 25 without pressure pulsation, and further has a limitation that the control must be performed precisely. In general, if the pipe line from the control device 51 (injection side direction control valve 47C) is long, precise control becomes difficult and pressure pulsation is likely to occur.
Therefore, an injection-side direction control valve 47C for controlling the injection cylinder device 25 is also arranged in the vicinity of the injection cylinder device 25. That is, the injection side direction control valve 47 </ b> C of the injection cylinder device 25 is disposed not in the valve unit portion 158 but in the injection device 7, that is, on the side surface of the injection cylinder device 25.
This makes it possible to perform precise control while preventing pressure pulsation of the hydraulic fluid supplied to the injection cylinder device 25.
The position of the injection side direction control valve 47C is not limited to the side surface of the injection cylinder device 25, and may be any position as long as it is in the vicinity of the injection cylinder device 25. In some cases, the injection cylinder device 25 may be configured separately.

The pump unit 154 is disposed in the vicinity of the injection cylinder device 25.
Specifically, the pump unit 154 is disposed on the side of the molding machine main body 112 in the longitudinal direction where the injection cylinder device 25 is disposed. A pump unit 154 is disposed on the side surface of the injection cylinder device 25 in the short direction.
As a result, the hydraulic fluid can be reliably supplied to the injection cylinder device 25 that requires a large amount of hydraulic fluid in a short time without pulsation or flow path loss.

As shown in FIG. 2, the control panel 152 is arranged in the vicinity of the pump unit 154 and the injection device 7, so that there is an advantage that the electric cable 164 can be shortened.
Further, since the control panel 152 is disposed in the longitudinal direction of the die casting machine 1, the control panel 152 can be inspected when a plurality of die casting machines 1 are disposed in parallel.
That is, when looking around the control panel 152 of the die-casting machine 1 arranged in parallel, if it moves by the distance in the short direction of the die-casting machine 1, it reaches the control panel 152 of the adjacent die-casting machine 1 and The control panel 152 of the die casting machine 1 to be confirmed can be confirmed.

  FIG. 3 is a diagram showing an outline of the configuration of a hydraulic circuit for driving various cylinder devices (the mold clamping cylinder device 15, the core cylinder device 19, the injection cylinder device 25, and the extrusion cylinder device 29).

This hydraulic circuit has an injection cylinder device side hydraulic circuit 182 for supplying and controlling hydraulic fluid to the injection cylinder device 25.
The hydraulic circuit includes a main body side hydraulic circuit 180 for supplying hydraulic fluid to the mold clamping cylinder device 25, the core cylinder device 19, the extrusion cylinder device 29, and the like.
Further, this hydraulic circuit is composed of a pump unit 154 that supplies hydraulic fluid to the injection cylinder device side hydraulic circuit 182 and the main body side hydraulic circuit 180.

The injection cylinder device side hydraulic circuit 182 is provided with an injection cylinder side pipe 162 for supplying pressurized hydraulic fluid from the pump unit 154 to the injection cylinder device 25 and the like.
Further, the main body side hydraulic circuit 180 includes various devices (the mold clamping cylinder device 15, the core cylinder device 19, the extrusion cylinder) in which the pressurized hydraulic fluid from the pump unit 154 is disposed on the bed 110. A bed-side pipe 160 for supplying to a device or the like is disposed.

The mold clamping cylinder device 15, the core cylinder device 19 and the extrusion cylinder device 29 are constituted by a single-acting cylinder device, and include a mold clamping cylinder tube 15t, a core cylinder tube 19t, and an extrusion cylinder tube 29t. Yes.
The mold clamping cylinder device 15 includes a mold clamping piston 15p slidably accommodated in the mold clamping cylinder tube 15t, a core piston 19p slidably accommodated in the core cylinder tube 19t, and an extrusion cylinder tube. An extrusion piston 29p is slidably accommodated in 29t.
Further, the mold clamping cylinder device 25 has a mold clamping piston rod 15r fixed to the mold clamping piston 15p, a core piston rod 19r fixed to the core piston 19p, and an extrusion piston rod 29r fixed to the extrusion piston 29p. is doing.

The cylinder chamber inside the mold clamping cylinder tube 15t of the mold clamping cylinder device 15 is partitioned by a mold clamping piston 15p into a mold clamping rod side chamber 15a on the piston rod side and a mold clamping head side chamber 15b on the opposite side.
The core cylinder device 19 also has a core rod side chamber 19a on the piston rod side and a core head side chamber 19b on the opposite side. Further, the extrusion cylinder device 29 also has an extrusion rod side chamber 29a on the piston rod side and an extrusion head side chamber 29b on the opposite side.

The pump unit 154 includes a tank 39, a filter 41, a pump 33, a motor 35, a motor sensor 43, a servo driver 45, and a cooler 49.
The pump 33 sucks the hydraulic fluid from the tank 39 that stores the hydraulic fluid, and pumps the hydraulic fluid to the main body side hydraulic circuit 180 and the injection cylinder device side hydraulic circuit 182.
The pump 33 may be a rotary pump that discharges hydraulic fluid by rotation of a rotor such as a gear pump or a vane pump, or the hydraulic fluid is discharged by reciprocation of a piston such as an axial plunger pump or a radial plunger pump. A plunger pump may be used.
Further, the pump 33 may be a fixed capacity pump or a variable capacity pump in which the discharge amount in one cycle of movement of the rotor or piston may be variable. The pump 33 only needs to be able to discharge the hydraulic fluid in one direction, but the structure may be the same as that of the bidirectional (two-way) pump.
In addition, the rotation speed and output torque of the motor 35 driven by the motor 35 are controlled by a servo driver 45.
Further, information such as the rotational speed of the motor 35 is detected by the motor sensor 43, and a signal of information such as the rotational speed is transmitted to the servo driver 45. Upon receipt of this signal, the servo driver 45 controls the motor 35. is doing.
The servo driver 45 controls the rotation speed and discharge pressure of the motor based on a command from the control device 51 described later.

The hydraulic fluid pumped to the main body side hydraulic circuit 180 and the injection cylinder device side hydraulic circuit 182 by the pump 33 has a predetermined action in the main body side hydraulic circuit 180 and the injection cylinder device side hydraulic circuit 182. Later, the process returns to the pump unit 154 again.
That is, the hydraulic fluid circulates through the die casting machine 1 and is reused.
At that time, since the hydraulic fluid having a predetermined action in the main body side hydraulic circuit 180 and the injection cylinder device side hydraulic circuit 182 is at a high temperature, the cooler 49 is used to cool the high temperature hydraulic fluid. Has been placed.

The main body side hydraulic circuit 180 includes a bed side hydraulic fluid supply pipe 200 that supplies high pressure hydraulic fluid supplied from the pump unit 154 to the mold clamping cylinder device 15, the extrusion cylinder device 29, and the core cylinder device 19. .
Further, the main body side hydraulic circuit 180 has a bed side drain pipe 202 from which hydraulic fluid returns from the mold clamping cylinder device 15, the extrusion cylinder device 29, and the core cylinder device 19 to the tank 39.

  As shown in FIG. 3, the valve unit 158 includes a mold clamping side direction control valve 47A, a core side direction control valve 47B, an extrusion side direction control valve 47D, and these pipes and joints.

The bed side hydraulic fluid supply pipe 200 and the bed side drain pipe 202 are piped while branching to the mold clamping side direction control valve 47A, the core side direction control valve 47B, and the extrusion side direction control valve 47D.
The mold clamping side direction control valve 47A is connected by a mold clamping rod side chamber 15a and a mold clamping rod side chamber piping 15ap. The mold clamping side direction control valve 47A is connected by a mold clamping head side chamber 15b and a mold clamping head side chamber piping 15bp.
The core side direction control valve 47B is connected by a core rod side chamber 19a and a core rod side chamber piping 19ap. Further, the core side direction control valve 47B is connected by a core head side chamber 19b and a core head side chamber piping 19bp.
Further, the extrusion side direction control valve 47D is connected by an extrusion rod side chamber 29a and an extrusion rod side chamber piping 29ap. The extrusion side direction control valve 47D is connected to the extrusion head side chamber 29b and the extrusion head side chamber piping 29bp.

The mold-clamping side direction control valve 47A, the core-side direction control valve 47B, and the extrusion-side direction control valve 47D are configured so that the mold clamping piston rod 15r and the core piston rod 19r are switched by switching the piping into which hydraulic fluid flows. The operation of the extrusion piston rod 29r is controlled.
Specifically, the high-pressure hydraulic fluid supplied from the bed side hydraulic fluid supply pipe 200 is supplied to the mold clamping head side chamber 15b via the mold clamping head side chamber pipe 15bp, and in addition, the operation in the mold clamping rod side chamber 15a. The control valve of the mold clamping side direction control valve 47A is controlled so that the liquid is discharged to the bed side drain pipe 202 through the mold clamping rod side chamber pipe 15ap.
Thus, when the control valve of the mold clamping side direction control valve 47A is controlled, the mold clamping piston rod 15r moves in the mold clamping direction (rightward in FIG. 3).
Conversely, high-pressure hydraulic fluid supplied from the bed side hydraulic fluid supply pipe 200 is supplied to the mold clamping rod side chamber 15a via the mold clamping rod side chamber piping 15ap, and in addition, the hydraulic fluid in the mold clamping head side chamber 15b is supplied. The control valve of the mold clamping side direction control valve 47A is controlled so as to be discharged to the bed side drain pipe 202 via the mold clamping head side chamber pipe 15bp. As described above, when the control valve of the mold clamping side direction control valve 47A is controlled, the mold clamping piston rod 15r moves in the direction in which mold clamping is released (leftward in FIG. 3).
Further, the control valve of the mold clamping side direction control valve 47A is controlled so as to close the hydraulic fluid in the mold clamping head side chamber 15b and the mold clamping head side chamber piping 15bp. As described above, when the control valve of the mold clamping side direction control valve 47A is controlled, the mold clamping piston rod 15r is maintained in its position without power supply by the hydraulic fluid.
As described above, the mold clamping cylinder device 15 is controlled by the mold clamping side direction control valve 47A.
The core cylinder device 19 and the extrusion cylinder device 29 are similarly controlled by the core side direction control valve 47B and the extrusion side direction control valve 47D, and the method thereof is the same as that of the mold clamping side direction control valve 47A, and is omitted.
The mold clamping side direction control valve 47A, the core side direction control valve 47B, the extrusion side direction control valve 47D, and the injection side direction control valve 47C are constituted by, for example, four ports and a three-position switching valve.

  The mold clamping side direction control valve 47A, the core side direction control valve 47B, and the extrusion side direction control valve 47D have only an electromagnetic control mechanism as a control mechanism, and the injection side direction control valve 47C has an electromagnetic control mechanism. In addition, the control mechanism may be appropriately configured according to required performance, such as a control mechanism in which the hydraulic control mechanism sequentially operates.

  1 and 2, the bed portion side piping 160 includes a mold clamping rod side chamber piping 15ap, a mold clamping head side chamber piping 15bp, a core rod side chamber piping 19ap, a core head side chamber piping 19bp, an extrusion rod side chamber piping 29ap, and an extrusion head side chamber. It is comprised from the piping 29bp (refer FIG. 3).

  The injection cylinder device 25 is constituted by, for example, a direct-coupled pressure increasing cylinder, an injection piston rod 25r fixed to the injection plunger 23, an injection piston 25p fixed to the injection piston rod 25r, and an injection piston. The pressure-increasing piston 25pp is disposed behind 25p, and the injection piston 25p and the injection cylinder tube 25t that slidably accommodates the pressure-increasing piston 25pp are provided.

The injection piston rod 25r is connected to the injection plunger 23 coaxially via, for example, a coupling 31 (FIG. 1). The injection piston rod 25r may be fixed to the injection plunger 23 by being formed integrally with the injection plunger 23. The injection piston 25p is fixed to the rear end of the injection piston rod 25r.
The injection piston rod 25r and the injection piston 25p may be fixed by being integrally formed.

The injection cylinder tube 25t has a tube small-diameter portion 25ta on which the injection piston 25p slides, and a tube large-diameter portion 25tb that is continuous with the rear end of the tube small-diameter portion 25ta and has a larger diameter than the tube small-diameter portion 25ta. Yes.
The pressure-increasing piston 25pp has a piston small-diameter portion 25ppa that can slide the tube small-diameter portion 25ta and a piston large-diameter portion 25ppb that can slide the tube large-diameter portion 25tb.

The cylinder chamber formed inside the small tube diameter portion 25ta is partitioned by an injection piston 25p into an injection rod side chamber 25a on the injection piston rod 25r side and an injection head side chamber 25b on the opposite side.
The cylinder chamber formed inside the tube large diameter portion 25tb is divided into a front chamber 25c on the injection head side chamber 25b side and a rear chamber 25d on the opposite side by the piston large diameter portion 25ppb of the pressure increasing piston 25pp. Yes.

By supplying the working fluid to the injection head side chamber 25b, the injection piston 25p moves forward, and as a result, the injection plunger 23 moves forward toward the cavity Ca.
When the hydraulic fluid is supplied to the rear chamber 25d, the pressure of the hydraulic fluid in the rear chamber 25d depends on the ratio of the pressure receiving area of the piston large diameter portion 25ppb to the pressure receiving area of the piston small diameter portion 25ppa by the pressure increasing piston 25pp. The pressure is increased and transmitted to the injection head side chamber 25b, and the injection plunger 23 increases the pressure of the molten metal in the cavity Ca.

  The injection cylinder device side hydraulic circuit 182 further includes an accumulator 53 that holds the hydraulic fluid to which pressure is applied in order to supply the hydraulic fluid to the injection cylinder device 25.

The accumulator 53 is constituted by, for example, a gas pressure type piston accumulator, accumulates the working fluid, and applies the compressed gas pressure to the working fluid through the piston.
The accumulator 53 may be a gravity type that applies a weight load to the hydraulic fluid, may be a spring type that applies a restoring force of a spring to the hydraulic fluid, or operates with a gas. It may be of a diaphragm type that separates the liquid from a flexible diaphragm.

The injection cylinder device side hydraulic pressure circuit 182 has a first flow path 55 that connects the pump 33 and the accumulator 53, and allows the pump 33 to accumulate pressure in the accumulator 53.
In the first flow path 55, for example, a first check valve 57 and a second check valve that allow a flow from the pump 33 side to the accumulator 53 side but prohibit a flow from the accumulator 53 side to the pump 33 side. A valve 59 is provided. The second check valve 59 is provided closer to the accumulator 53 than the first check valve 57.

As described above, the injection cylinder device side hydraulic circuit 182 connects the pump 33 and the injection cylinder device 25, and enables the injection cylinder device 25 to be driven by the pump 33.
Specifically, the injection cylinder device side hydraulic circuit 182 includes a second flow path 61 connected to the pump 33, a third flow path 63 connected to the injection rod side chamber 25a of the injection cylinder device 25, and an injection cylinder. And a fourth flow path 65 connected to the ejection head side chamber 25b of the device 25.

For example, the second flow path 61 is branched from the first flow path 55 between the first check valve 57 and the second check valve 59 (a part of the first flow path 55 is made common). Connected to the pump 33.
The injection side direction control valve 47C switches the connection state between the second flow path 61 (pump 33), the third flow path 63 (injection rod side chamber 25a), and the fourth flow path 65 (injection head side chamber 25b). .

  The injection cylinder device side hydraulic circuit 182 connects the accumulator 53 and the injection cylinder device 25, and enables the injection cylinder device 25 to be driven by the accumulator 53. Specifically, it is as follows.

  The injection cylinder device side hydraulic circuit 182 is provided in the fifth flow channel 67 and the fifth flow channel 67 that connect the accumulator 53 and the injection head side chamber 25b of the injection cylinder device 25, and from the accumulator 53 to the injection head side chamber 25b. And a supply control valve 69 capable of permitting or prohibiting the flow.

For example, the fifth channel 67 is connected to the accumulator 53 by being connected to the first channel 55 on the accumulator 53 side of the second check valve 59.
Note that the fifth flow path 67 may be connected to the accumulator 53 separately from the first flow path 55 (the first flow path 55 may not be partially shared).

For example, the supply control valve 69 is closed when the pilot pressure is introduced, and allows the flow from the accumulator 53 side to the injection head side chamber 25b side when the pilot pressure is not introduced. It is composed of a pilot type check valve that prohibits the flow from the side chamber 25b side to the accumulator 53 side.
Accordingly, when the introduction of the pilot pressure to the supply control valve 69 is stopped, the working fluid is supplied from the accumulator 53 to the injection head side chamber 25b, and the injection piston 25p and the injection piston rod 25r move forward to the left side of the drawing.

The injection cylinder device side hydraulic circuit 182 has a meter-out circuit for controlling the injection cylinder device 25 when hydraulic fluid is supplied from the accumulator 53 to the injection head side chamber 25b.
Specifically, for example, the injection cylinder device side hydraulic circuit 182 includes an injection cylinder side drain pipe 204 that connects the injection rod side chamber 25a and the tank 39, and an injection side flow rate that controls the flow rate of the injection cylinder side drain pipe 204. And a control valve 73.

The injection-side flow rate control valve 73 is configured by, for example, a servo valve that is incorporated in a servo mechanism and can modulate the flow rate steplessly in accordance with an input signal.
The injection-side flow rate control valve 73 is configured to change the flow rate setting value by sequentially operating, for example, an electromagnetic control mechanism and a hydraulic control mechanism.

  The flow rate of the working fluid discharged from the injection rod side chamber 25a of the injection cylinder device 25 is controlled by the injection side flow rate control valve 73, whereby the speeds of the injection piston 25p and the injection piston rod 25r of the injection cylinder device 25 are controlled. Is done.

  The injection cylinder device side hydraulic pressure circuit 182 has a seventh flow path 75 that connects the accumulator 53 and the rear chamber 25d of the injection cylinder device 25, and a pressure increase side flow rate control valve 77 provided in the seventh flow path 75. is doing.

  For example, the seventh flow path 75 is connected to the accumulator 53 by being connected to the first flow path 55 on the accumulator 53 side of the second check valve 59. Note that the seventh flow path 75 may be connected to the accumulator 53 separately from the first flow path 55 (the first flow path 55 may not be partially shared).

The pressure-increasing side flow control valve 77 is configured by, for example, a servo valve that is incorporated in a servo mechanism and can modulate the flow rate steplessly according to an input signal.
The pressure-increasing side flow rate control valve 77 is configured to change the set value of the flow rate by sequentially operating, for example, an electromagnetic control mechanism and a hydraulic control mechanism.

  By supplying the working fluid from the accumulator 53 to the rear chamber 25d through the seventh flow path 75, the pressure in the ejection head side chamber 25b is increased through the pressure increasing piston 25pp. At this time, the speed of pressure increase is controlled by the pressure increase side flow control valve 77.

The injection cylinder device side hydraulic circuit 182 has an eighth flow path 79 that connects the front chamber 25c, the tank 39, and the pump 33.
For example, the eighth flow path 79 is connected to the third flow path 63 closer to the injection rod side chamber 25a than the injection side direction control valve 47C, and to the injection cylinder side drain pipe 204, for example. 73 is connected on the injection rod side chamber 25a side than 73.

Therefore, when the hydraulic fluid in the accumulator 53 is supplied to the rear chamber 25d and the pressure-increasing piston 25pp moves forward, the hydraulic fluid in the front chamber 25c is discharged to the tank 39 by opening the injection-side flow rate control valve 73.
Further, when the injection side direction control valve 47C is switched to the position on the left side in FIG. 3 and hydraulic fluid is supplied from the pump 33 to the injection rod side chamber 25a and the injection piston 25p moves backward, the pump 33 returns to the front chamber 25c. The hydraulic fluid is supplied, and the pressure-increasing piston 25pp also moves backward.

The injection cylinder device side hydraulic circuit 182 includes a ninth flow path 81 that connects the rear chamber 25 d and the tank 39, and a third check valve 82 provided in the ninth flow path 81.
For example, the ninth flow path 81 is connected to the fourth flow path 65 on the injection head side chamber 25b side with respect to the injection side direction control valve 47C.
The third check valve 82 is provided so as to allow a flow from the rear chamber 25d side to the injection side direction control valve 47C side, while prohibiting a flow from the injection side direction control valve 47C side to the rear chamber 25d side. It has been.

Therefore, when the injection side direction control valve 47C is switched to the position on the left side in FIG. 3 and hydraulic fluid is supplied from the pump 33 to the front chamber 25c, and the pressure increasing piston 25pp moves backward, the hydraulic fluid in the rear chamber 25d is It is discharged to the tank 39 through the nine flow paths 81.
On the other hand, when the injection side direction control valve 47C is switched to the position on the right side of FIG. 2 and hydraulic fluid is supplied from the pump 33 to the injection head side chamber 25b and the injection piston 25p moves forward, the third check The valve 82 prevents the flow from the pump 33 to the rear chamber 25d, and the pressure-increasing piston 25pp does not move forward.

  FIG. 4 is an explanatory diagram for explaining the control system of the die casting machine 1 of the present invention.

FIG. 4 shows the operation panel 150 and the control panel 152.
The control panel 152 includes a control device 51, a transformer 178, and a switchboard 179.
The transformer 178 receives electric power from the external power system and converts it into a voltage required by the die casting machine 1.
Then, the transformed power is distributed to each device of the die casting machine 1 by the switchboard 179.
The power distributed by the switchboard 179 is also supplied to the control device 51, and the control device 51 is driven by this power.

As shown in FIG. 4, the control device 51 includes, for example, a CPU 83 and a memory 84 such as a ROM or a RAM.
The CPU 83 generates a control signal based on various electric signals input via the input circuit 85.
Then, the generated control signal is output to various devices via the output circuit 86.

The electrical signal input to the control device 51 includes, for example, the position sensors 87 (87A to 87D) that detect the positions of the clamping piston rod 15r, the core piston rod 19r, the injection piston rod 25r, and the extrusion piston rod 29r. Detection signals S1 to S4.
Moreover, the electrical signal input into the control apparatus 51 is the electrical signals P1-P3 from each pressure sensor 88A (88B, 88C) which detects the pressure of hydraulic fluid, for example.
Furthermore, the electrical signal input to the control device 51 is, for example, an operation signal corresponding to a user operation from the operation panel 150 that receives a user operation.
On the other hand, the electrical signal output from the control device 51 presents, for example, a command signal to the servo driver 45 of the motor 35, control signals to various valves such as the mold clamping side direction control valve 47A, and various information to the user. A command signal to the display unit 190 and a control output to other devices.

The operation panel 150 includes various input units 192 (such as various buttons) and a display unit 190 (such as a monitor display) that displays various conditions of the die casting machine 1.
In FIG. 4, various operations performed on the input unit 192 of the operation panel 150 are all input to the control device 51, but are not necessarily input to the control device 51. In other words, various devices of the die casting machine 1 may be directly driven.

  Here, the operation of the die casting machine 1 will be described. First, an outline of the operation of the die casting machine 1 will be described.

In the die casting machine 1, first, the core 107 is disposed on the front side of the moving mold 105 by the core cylinder device 19 in the mold open state (or the initial stage of mold closing).
Next, the mold clamping cylinder device 15 drives the movable die plate 12 toward the fixed die plate 11 to close the movable die 105 so that the movable die 105 contacts the fixed die 103. Clamping that increases the contact pressure of the fixed mold 103 is performed.
Thereafter, the injection plunger 23 is driven by the injection cylinder device 25, and the molten metal is injected and filled into the cavity Ca. When a certain time elapses (the molten metal is solidified to form a molded product), the movable die plate 12 is driven to the opposite side of the fixed die plate 11 by the mold clamping cylinder device 15 to open the mold.
At this time, the molded product moves together with the moving mold 105 and is released from the fixed mold 103. Then, the extrusion pin 27 is driven by the extrusion cylinder device 29, and the molded product is pushed out by the extrusion pin 27 and released from the moving mold 105.

  FIG. 5 is a drawing of the operation panel 150 viewed from the direction A of FIG.

As shown in FIG. 5, the operation panel 150 includes a display unit 190, an input unit 192, and an operation unit 194 in order from the top (see also FIG. 4).
The operation unit 194 is provided with a dial, a gauge, an emergency stop switch, operation keys, and the like.

  6 is a drawing of the valve unit 158 as seen from the direction B of FIG.

As shown in FIG. 6, the valve unit 158 includes a mold clamping side direction control valve 47A, a core side direction control valve 47B, an extrusion side direction control valve 47D, etc. (hereinafter, these are collectively referred to as “direction control valve 47”). Is used) (see also FIG. 3).
And the pressure gauge 195 which displays the pressure of each direction control valve 47 arrange | positioned at the valve | bulb arrangement | positioning part 196 is arrange | positioned.
In addition, a pipe connection portion 199 is disposed below the valve placement portion 196.
The pipe connection part 199 includes a mold clamping pipe connection part 199a that connects the mold clamping cylinder device 15 and the mold clamping side direction control valve 47A, and an extrusion pipe connection part 199b that connects the extrusion cylinder device 29 and the extrusion side direction control valve 47D. have.
In addition, the pipe connection portion 199 has a core pipe connection portion 199c that connects the plurality of core cylinder devices 19 and the core side direction control valve 47B.

Further, the valve unit 158 has a spare space 198.
With this spare space 198, even when the core cylinder device 19 is added, it is possible to simply attach a new directional control valve 47 to the valve unit 158.
Accordingly, even if the mold is changed, there is an effect that the valve unit 158 can be used as it is without having to be replaced.
Furthermore, since one type of valve unit portion 158 can be used for several types of die casting machines 1, it is possible to share parts. This makes it possible to reduce costs.

<Modification>
In the above embodiment, the invention relates to the pump unit unit 154, the valve unit unit 158, and the control panel 152 in the single die casting machine 1.
However, when the present invention is regarded as a superordinate concept, the pump 33 and the tank 39 are unitized, the plurality of directional control valves 47 are unitized, and the control panel 152 is disposed in the vicinity thereof.
When the present invention is thus regarded as a superordinate concept, more preferred embodiments will be described below.

  FIG. 7 is an explanatory diagram showing a modification of the present invention.

In FIG. 7, a plurality of die casting machines 1 are continuously arranged, and the pump unit 154 and the control panel 152 are shared. The die casting machine 1 is shown in a simplified manner.
FIG. 7 shows an example in which three die casting machines 1 are controlled by a single pump unit 154 and the first control panel 152A.
Further, the three die casting machines 1 are controlled by the second control panel 152B by the same method.
Here, the die casting machine 1 in FIG. 7 is distinguished as a first die casting machine 1A, a second die casting machine 1B, and a third die casting machine 1C.
The piping for supplying the hydraulic fluid to the injection cylinder device 25 of the first die casting machine 1A is the first injection cylinder side piping 162A, and the piping for supplying the hydraulic fluid to the mold clamping cylinder device or the like is the first bed portion side. Let it be piping 160A.
Further, a first valve unit portion 158A for controlling the working fluid flowing through the first bed portion side piping 160A is disposed.
The same applies to the second die casting machine 1B and the third die casting machine 1C.
The pump unit 154 may supply hydraulic fluid to the three die-casting machines 1 with a single motor 35 and pump 33, and each of the three die-casting machines 1 has a motor 35 and a pump 33. It may be.

The tank 39 and the cooler 49 and the filter 41 (not shown) are shared by the three die casting machines 1.
Thus, by sharing the tank 39, the cooler 49, and the filter 41, there is an effect that these parts can be reduced.

Thus, by sharing the pump unit unit 154 and the first control panel 152A, the number of parts can be reduced and the cost can be reduced.
Furthermore, a plurality of die casting machines 1 can be monitored by one control panel 152.
When the user performs the monitoring work, it is advantageous because the user can monitor as many as six die cast machines 1 only by moving from the first control panel 152A to the second control panel 152B in FIG.
Note that the number of objects to be monitored and controlled by the control panel 152A is not limited to three, and three or more can be monitored and controlled if possible.
Furthermore, it is also possible to supply hydraulic fluid to three or more die casting machines 1 for the pump unit 154 as well.

A die casting machine 1 according to the present invention includes a fixed die plate 11 that holds a fixed die 103 and a movable die plate 12 that holds a movable die 105 and is movable in the mold opening / closing direction with respect to the fixed die plate 11. .
The molding machine main body 112 includes an injection plunger 23 for extruding a molding material into a cavity Ca formed by the fixed mold 103 and the movable mold 105, and an injection cylinder device 25 for driving the injection plunger 23. .
Furthermore, it has the tank 39 which stores the hydraulic fluid, the pump 33 which can send out hydraulic fluid, and the pump unit part 154 containing the motor 35 which drives the pump 33.
The pump unit 154 is disposed separately from the molding machine main body 112.
Further, the pump unit portion 154 is disposed on the injection cylinder device 25 side of the fixed die plate 11.
Thus, the pump unit part 154 and the molding machine main body part 112 are configured separately and independently, whereby the pump unit part 154 can be made into one unit.
And by unitizing, only the pump unit part 154 can be produced separately.
In addition, it is not necessary to arrange each device constituting the pump unit portion 154 in the bed 110 portion as in the prior art.

The injection cylinder device 25 is a side injection, and the pump unit 154 is disposed at a position in the side surface direction of the injection cylinder device 25.
With such a configuration, the pump unit portion 154 that supplies the hydraulic fluid to the injection cylinder device 25 can be disposed in the vicinity of the injection cylinder device 25. Therefore, the pressure pulsation of the hydraulic fluid supplied to the injection cylinder device 25 It becomes possible to perform precise control while preventing the above-mentioned problem.

A mold clamping cylinder device 15 for driving the movable die plate 12, a bed portion side pipe 160 for coupling the mold clamping cylinder device 15 and the pump unit portion 154, and an injection cylinder for coupling the injection cylinder device 25 and the pump unit portion 154. Side piping 162.
And the length of the bed part side piping 160 is formed longer than the length of the injection cylinder side piping 162.
With such a configuration, the working fluid can be reliably supplied to the injection cylinder device 25 that requires a large amount of working fluid in a short time without pulsation or flow path loss.

The bed section side pipe 160 has a mold clamping side direction control valve 47A for controlling the hydraulic fluid supplied to the mold clamping cylinder device 15, and the injection cylinder side pipe 162 supplies the hydraulic fluid supplied to the injection cylinder device 25. It has an injection side direction control valve 47C for controlling.
Further, the mold clamping side direction control valve 47A is disposed in a valve unit portion 158 that is configured separately from the pump unit portion 154 and the molding machine main body portion 112, and the injection side direction control valve 47C is positioned on the side surface of the injection cylinder device 25. Is arranged.
With such a configuration, it is possible to perform precise control while preventing pressure pulsation of the hydraulic fluid supplied to the injection cylinder device 25.

The valve unit 158 is disposed adjacent to the pump unit 154 between the pump unit 154 and the molding machine main body 112.
With such a configuration, the valve unit 158 can also be unitized.
Furthermore, since the valve unit 158 is disposed between the mold clamping cylinder device 15 and the like disposed in the molding machine main body 112, the pipe line can be configured to be short.

An extrusion cylinder device 29 disposed in the molding machine main body 112 and a core cylinder device 19 disposed in the molding machine main body 112 are provided.
Further, an extrusion side direction control valve 47D disposed in a pipe connecting the extrusion cylinder device 29 and the pump 33, and a core side direction control valve disposed in a pipe connecting the core cylinder device 19 and the pump 33. 47B.
The extrusion side direction control valve 47D and the core side direction control valve 47B are arranged in the valve unit portion 158.
With such a configuration, the mold clamping side direction control valve 47A of the mold clamping cylinder device 15, the core side direction control valve 47B of the core cylinder device 19 and the extrusion side direction control valve 47D of the extrusion cylinder device 29 are unitized. Can do.
And by unitizing, it becomes possible to facilitate production and cost reduction by dividing the production, and to facilitate transportation and assembly.

The control panel 152 includes a control device 51 that controls the transformer 178, the switchboard 179, the mold clamping side direction control valve 47A, and the injection side direction control valve 47C.
The control panel 152 is disposed at a position opposite to the molding machine main body 112 of the pump unit 154.
With such a configuration, the user can easily look around when a plurality of die casting machines 1 must be monitored.

The pump unit 154 supplies hydraulic fluid to a plurality of molding machines 1, and the control panel 152 has a control device 51 for the plurality of molding machines 1.
With such a configuration, the user can easily look around when a plurality of die casting machines 1 must be monitored.
In addition, since the pump unit 154 and the control panel 152 can be unitized, it is possible to facilitate production and cost reduction, and facilitate conveyance and assembly by dividing production.

In the above embodiment, the die casting machine 1 and the like are examples of the molding machine of the present invention, and the metal material is an example of the molding material of the present invention.
The mold clamping side direction control valve 47A is an example of the first control valve in the present invention, the core side direction control valve 47B is an example of the fourth control valve in the present invention, and the injection side direction control valve 47C. Is an example of the second control valve in the present invention, and the extrusion side direction control valve 47D is an example of the third control valve in the present invention.
Furthermore, the bed portion side piping 160 is an example of the first piping in the present invention, and the injection cylinder side piping 162 is an example of the second piping in the present invention.

  The present invention is not limited to the above embodiment, and may be implemented in various aspects.

  The molding machine is not limited to the die casting machine 1. In other words, the molding material is not limited to a metal material. For example, the molding machine may be an injection molding machine that injects a resin as a molding material. The hydraulic fluid is not limited to oil. For example, the hydraulic fluid may be water.

  The pump 33 may not continue supplying the hydraulic fluid to the mold clamping cylinder device 15 after the mold clamping force is obtained. For example, after the mold clamping, the mold clamping force can be maintained by providing a stopper for holding the moving die plate 12, the tie bar 14, or the piston of the mold clamping cylinder device 15 at a fixed position.

The hydraulic circuit may not be configured to be able to supply hydraulic fluid directly from the pump 33 to the injection cylinder device 15. For example, the injection cylinder device 25 may be driven only by the accumulator 53.
However, as in the embodiment, when the hydraulic fluid is supplied to the injection cylinder device 25 by the pump 33 in a part of the advancement process of the injection plunger 23, the accumulator 53 can be reduced in size by effectively using the pump 33.

The hydraulic circuit and the control device may be configured to perform pressure increase by the pump 33.
For example, in FIG. 3, a valve that allows or prohibits flow (for example, when pilot pressure is introduced, is closed to the accumulator 53 side of the first flow path 55 from the position where the seventh flow path 75 branches, When the pilot pressure is not introduced, a pilot check valve that allows the flow from the pump 33 to the accumulator 53 while prohibiting the flow from the accumulator 53 to the pump 33 is provided. The pressure increase side flow control valve 77 is closed, and the pilot pressure is not introduced into the check valve. When the pressure is increased, the pressure increase side flow control valve 77 is opened, and the pilot pressure is introduced into the check valve and closed. The hydraulic circuit and control device 51 may be configured to drive the pump 33.
In this case, since the pressure at the time of pressure increase can be controlled by controlling the number of rotations of the pump 33 and / or the discharge amount per cycle of the pump 33, the pressure increase side flow control valve 77 has a flow control function. There may be no valve.

  The specific configuration of the hydraulic circuit and the specific control by the control device 51 can be various in addition to the above-described embodiment. For example, by providing a directional control valve 47 that switches the supply destination of the hydraulic fluid from the pump 33 between the accumulator 53 and the cylinder device, the pump accumulates pressure in the accumulator 53 and drives the cylinder device. It is possible.

  The injection cylinder device 25 is not limited to the pressure increasing type, and may be a single acting type. Further, the pressure increasing type cylinder device is not limited to a direct connection type in which the tube large diameter portion 25tb is coaxially directly connected to the tube small diameter portion 25ta. For example, the tube small diameter portion 25ta and an extrusion cylinder for pressure increase The tube 29t may be a separated type connected by a flow path formed by a hose or the like.

DESCRIPTION OF SYMBOLS 1 ... Die casting machine, 3 ... Clamping device, 5 ... Core extraction device, 7 ... Injection device, 9 ... Extrusion device, 11 ... Fixed die plate, 12 ... Moving die plate, 13 ... Link housing, 14 ... Tie bar,
DESCRIPTION OF SYMBOLS 15 ... Clamping cylinder apparatus, 15a ... Clamping rod side chamber, 15ap ... Clamping rod side chamber piping, 15b ... Clamping head side chamber, 15bp ... Clamping head side chamber piping, 15p ... Clamping piston, 15r ... Clamping piston rod, 15t ... Clamping cylinder tube,
17 ... Toggle mechanism,
DESCRIPTION OF SYMBOLS 19 ... Core cylinder apparatus, 19a ... Core rod side chamber, 19ap ... Core rod side chamber piping, 19b ... Core head core side chamber, 19bp ... Core head side chamber piping, 19p ... Core piston, 19r ... Core piston Rod, 19t ... Core cylinder tube,
21 ... Sleeve, 23 ... Injection plunger,
25 ... Injection cylinder device, 25a ... Injection rod side chamber, 25b ... Injection head side chamber, 25c ... Front side chamber, 25d ... Rear side chamber, 25p ... Piston for injection, 25pp ... Piston for pressure increase, 25ppa ... Piston small diameter part, 25ppb ... Piston large Diameter portion, 25r ... Injection piston rod, 25t ... Injection cylinder tube, 25ta ... Small tube diameter portion, 25tb ... Large tube diameter portion, 27 ... Extrusion pin,
29 ... Extrusion cylinder device, 29a ... Extrusion rod side chamber, 29ap ... Extrusion rod side chamber piping, 29b ... Extrusion head side chamber, 29bp ... Extrusion head side chamber piping, 29p ... Extrusion piston, 29r ... Extrusion piston rod, 29t ... Extrusion cylinder tube,
31 ... Coupling, 33 ... Pump, 35 ... Motor, 39 ... Tank, 41 ... Filter, 43 ... Motor sensor, 45 ... Servo driver,
47 ... Direction control valve, 47A ... Mold clamping side direction control valve (first control valve), 47B ... Core side direction control valve (fourth control valve), 47C ... Injection side direction control valve (second control) Valve), 47D ... extrusion side direction control valve (third control valve), 49 ... cooler, 51 ... control device, 53 ... accumulator,
55 ... 1st flow path, 57 ... 1st check valve, 59 ... 2nd check valve, 61 ... 2nd flow path, 63 ... 3rd flow path, 65 ... 4th flow path, 67 ... 5th flow path 69 ... Supply control valve, 73 ... Injection side flow control valve, 75 ... Seventh flow path, 77 ... Pressure increase side flow control valve, 79 ... 8th flow path, 81 ... 9th flow path, 82 ... 3rd check Valve, 83 ... CPU, 84 ... memory, 85 ... input circuit, 86 ... output circuit, 87 ... position sensor, 88 ... pressure sensor, 101 ... main mold, 103 ... fixed mold, 105 ... moving mold, 107 ... medium 110, bed, 112, molding machine main body, 150, operation panel, 152, control panel, 154, pump unit, 156, terminal box, 158, valve unit, 159, injection valve device, 160, bed Side piping (first piping), 162 ... Injection cylinder side piping (second piping), 164 ... Electric cable 178 ... transformer, 179 ... distribution panel, 180 ... main body side hydraulic circuit, 182 ... injection cylinder device side hydraulic circuit, 190 ... display unit, 192 ... input unit, 194 ... operating unit, 195 ... pressure gauge, 196: Valve arrangement part, 198: Preliminary space, 199 ... Pipe connection part, 199a ... Clamping pipe connection part, 199b ... Extrusion pipe connection part, 199c ... Core pipe connection part, 200 ... Bed side hydraulic fluid supply pipe, 202 ... Bed side drain piping, 204 ... Injection cylinder side drain piping

Claims (8)

A fixed die plate that holds the fixed die, a movable die plate that holds the movable die and is movable in the mold opening / closing direction with respect to the fixed die plate, and extrudes the molding material into a cavity formed by the fixed die and the movable die A molding machine body including an injection plunger and an injection cylinder device for driving the injection plunger;
A pump unit that includes a tank that stores hydraulic fluid, a pump capable of delivering the hydraulic fluid, and a motor that drives the pump;
Have
The pump unit is disposed separately from the molding machine main body,
The pump unit is disposed on the injection cylinder device side of the fixed die plate. The injection cylinder device is a horizontal injection,
The molding machine according to claim 1, wherein the pump unit is disposed at a position in a side surface direction of the injection cylinder device in the previous period. A clamping cylinder device for driving the movable die plate;
A first pipe connecting the mold clamping cylinder device and the pump unit part;
A second pipe connecting the injection cylinder device and the pump unit part;
Have
The molding machine according to claim 1, wherein a length of the first pipe is longer than a length of the second pipe. The first pipe has a first control valve for controlling the hydraulic fluid supplied to the mold clamping cylinder device,
The second pipe has a second control valve for controlling the hydraulic fluid supplied to the injection cylinder device,
The first control valve is disposed in a valve unit part configured separately from the pump unit part and the molding machine main body part,
The molding machine according to claim 3, wherein the second control valve is disposed at a side surface position of the injection cylinder device. The molding machine according to claim 4, wherein the valve unit part is disposed adjacent to the pump unit part between the pump unit part and the molding machine main body part. An extrusion cylinder device disposed in the molding machine main body,
A core cylinder device disposed in the molding machine body,
A third control valve disposed in a pipe connecting the extrusion cylinder device and the pump;
A fourth control valve disposed in a pipe connecting the core cylinder device and the pump;
The molding machine according to claim 4 or 5, wherein the third control valve and the fourth control valve are arranged in the valve unit portion. A control panel including a transformer, a switchboard, a control device for controlling the first control valve and the second control valve;
The molding machine according to any one of claims 1 to 6, wherein the control panel is disposed at a position opposite to the molding machine main body of the pump unit. The pump unit section supplies hydraulic fluid to a plurality of molding machines,
The molding machine according to claim 7, wherein the control panel includes a control device for a plurality of molding machines.

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