JP2880072B2 - Gate cut and protrusion control device and actuator control device for injection molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method of operating one or a plurality of ejector pins by a hydraulic ejector provided in an injection molding machine to cut a gate in a mold and at least project a molded product from the mold. The present invention relates to a gate cut and protrusion control device for an injection molding machine and an actuator control device for controlling actuators other than a hydraulic ejector cylinder, which are attached to the injection molding machine.

[0002]

2. Description of the Related Art In general, an injection molding machine or the like that injection-molds a molten material such as a synthetic resin by hydraulic pressure is provided with a structure and a process for performing gate cutting and projecting a molded product.

[0003] In some cases, the gate cut and the protrusion of the molded product are performed by operating the same ejector pin by a hydraulic ejector. In this case, the gate cut is performed by the stroke operation at the preceding stage of the hydraulic ejector, and after the resin in the cavity is cooled, the hydraulic ejector is operated again to eject the molded product.

In another injection molding machine, a gate cut pin and an ejector pin are provided, and the gate is cut by operating the gate cut pin by a hydraulic ejector immediately after completion of filling of the resin or during the pressure holding. Return the cut pin to the initial position. Next, after the resin in the cavity is cooled, the gate cut pin and the eject pin are operated by the hydraulic ejector to eject the molded product.

[0005]

Since the hydraulic ejector of a general injection molding machine is used for ejecting a molded product, the hydraulic ejector is not operated except for the operation of ejecting the molded product. . for that reason,
In such an injection molding machine, when the gate cut and the ejection of the molded product are performed by the hydraulic ejector, the hydraulic pressure of the injection molding machine is controlled so as to perform the corresponding operation.
There is a problem in that the electric control device must be changed, and it takes time and effort for the modification.

[0006] In the case of performing the gate cutting and the ejection of the molded product by the hydraulic ejector, the gate cutting and the ejection by each pin are performed at the same speed (flow rate) and pressure in each case. For this reason, when a gate cut is performed according to a set speed and pressure for ejecting a molded product, which is usually set in an injection molding machine, the speed and pressure are too small to perform the gate cut. There are drawbacks in that the finished condition is not good, for example, a gate mark remains on the surface, and the cycle is long.

On the other hand, if the set values of the speed and the pressure for the operation of the hydraulic ejector are set to the speed and the pressure value which can improve the finished condition of the gate cut surface, the operation speed is set so that the molded product is ejected. Since the molded product is high, cracks and the like are generated in the molded product when the molded product is protruded, so that there is a problem that a good molded product cannot be obtained.

In general, in recent hydraulic injection molding machines, the speed (flow rate) and pressure of each actuator are controlled by one electromagnetic flow control valve and one electromagnetic pressure control valve. It is not possible to control the speed and pressure of multiple actuators at the same time. Therefore, when the gate is cut by the hydraulic ejector, the hydraulic ejector is operated immediately before the completion of filling at the time of injection of the resin, at the completion of the filling, or at a certain timing after the completion of the filling. When the injection or the metering is being performed, it is necessary to temporarily stop or delay the injection or the metering operation, and to perform a gate cut during that time. Therefore, also in this case, there is a disadvantage that the gate cut cycle becomes long.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is capable of performing a gate cut and a molded product ejection by a hydraulic ejector without performing a major modification of an injection molding machine. It is possible to control the actuators other than the hydraulic ejector cylinder without the gate cut and protrusion control device of the molding machine (hereinafter, simply referred to as the gate cut and protrusion control device) and the injection molding machine without major remodeling. An object of the present invention is to provide an actuator control device for an injection molding machine (hereinafter, simply referred to as an actuator control device).

[0010]

According to a first aspect of the present invention, there is provided a gate cut and protrusion control apparatus, wherein one or a plurality of ejector pins are operated by a hydraulic ejector cylinder provided in an injection molding machine, and a mold is formed. A gate cut and ejection control device of an injection molding machine attached to an injection molding machine, wherein the gate is cut inside and at least a molded product is ejected from a mold, wherein the hydraulic ejector cylinder of the injection molding machine is driven. To control the existing hydraulic
Separately newly provided with electrical control device, gate cutting
To set the hydraulic ejector cylinder operating conditions at the time
A step and the hydraulic ejector syringe when the molded product is ejected.
Means for setting operating conditions of the injection
Detachable to the piping connected to the hydraulic ejector cylinder of the machine
A flexible coupler is provided and the injection molding machine
Hydraulic and electric control units are equipped with detachable electrical connectors
Connected to these couplers or electrical fittings
Couplers and electrical connectors are the gate couplers of the injection molding machine.
And the couplers
Or the hydraulic ejector cylinder through a connector and
Structured so that it can be detachably connected to hydraulic and electric control devices
It is characterized by having been done .

According to a second aspect of the present invention, there is provided the gate cut and protrusion control device according to the first aspect, wherein a case surrounding the outside is provided;
Moving means provided in the case.
And

An actuator system according to claim 3 of the present invention.
The control device is one or more than the ejector pins of the injection molding machine.
A number of components are mounted on the hydraulic ejector
Injection molding operated by actuators other than
Control device for injection molding machine attached to the machine
The actuator in the injection molding machine
New and separate from the existing hydraulic and electric control devices
And a pipe connected to the actuator
A removable coupler is provided and the injection
A detachable electrical connection is installed on the hydraulic and electric control unit of the machine.
Connected to these couplers or electrical fittings
The coupler and the electrical connection are the actuators of the injection molding machine.
These couplers or connectors are provided in the
To the actuator and hydraulic / electric control device via
It is configured to be detachably connected.
You .

[0013]

[0014]

[0015]

[0016]

According to the gate cut and protrusion control device of the first aspect of the present invention, the gate cut and protrusion control device is manufactured separately while the hydraulic and electric control device of the injection molding machine is kept as it is, and the injection molding is performed. Just connect it to the
Therefore, the modification of the injection molding machine can be minimized, and the labor involved in the modification can be greatly reduced.

Further, the operating conditions of the hydraulic ejector, can be varied in a time gate cut and at the time of protrusion of the molded article, the respective operating conditions can be optimized.

Further , the coupler provided in the pipe connected to the hydraulic ejector cylinder and the electrical connection provided in the hydraulic / electric control device are provided with a gate cut and protrusion control device, and the coupler and the electrical connection device provided therein. The gate cut and protrusion control device can be easily and quickly connected to the injection molding machine by detachably connecting to the hydraulic ejector cylinder and the electric control device via the The hydraulic ejector of the machine can be controlled.

According to the gate cut and protrusion control device of the second aspect of the present invention, when necessary, it can be moved near the injection molding machine by the moving means provided on the case surrounding the outside thereof. When unnecessary, it can be retracted to a position away from the injection molding machine.

According to the actuator control device of the third aspect of the present invention, the actuator control device may be manufactured separately and connected to the injection molding machine while keeping the hydraulic / electric control device on the injection molding machine side as it is. Therefore, the modification of the injection molding machine can be minimized, and the labor involved in the modification can be greatly reduced.

Further, couplers and provided in a pipe connected to the actuator other than the hydraulic ejector cylinder
The actuator control device can be easily and quickly ejected by detachably connecting the actuator control device to the actuator via the coupler and the electrical connection device provided on the hydraulic / electric control device. It can be connected to a molding machine, and this actuator control device can control the injection molding machine.

[0022]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an injection molding machine according to an embodiment of the present invention;

FIGS. 1 to 8 relate to a first embodiment of the present invention. 1 is a front view of a main part of an injection molding machine in a mold clamped state, FIG. 2 is a longitudinal sectional view of a mold part of FIG. 1, and FIG. 3 is a main part of a gate cut and protrusion control device of the injection molding machine according to the present embodiment. Hydraulic circuit, FIG. 4 is a block diagram of the control device of FIG. 3, FIG. 5 is a plan view showing a state of piping and wiring between the control device of FIG. 4 and the injection molding machine, and FIG. 6 and FIG. FIG. 8 is a control flowchart, and FIG. 8 is a view showing the appearance of the control device of FIG.

The injection molding machine shown in FIG. 1 is, for example, a horizontal injection molding machine of an in-line screw type. On a machine frame 1, an injection device 2, a mold device 3, and a mold clamping device 4 are provided. ing. The injection device 2 mainly includes an injection cylinder 5 and a heating cylinder 6, and the mold device 3 includes two opposed dies 7, 8 attached to a fixed platen 9 and a movable platen 10, respectively. The mold clamping device 4 includes a mold clamping hydraulic cylinder 11 and a toggle mechanism 12,
The movable platen 10 is moved relative to the fixed platen 9 to perform mold clamping and mold opening.

The hydraulic cylinder 11 and the toggle mechanism 12
Is provided on the end plate 13. The end plate 13 is connected to the fixed plate 9 via a plurality of tie rods (not shown).
0 is slidably mounted. The movable platen 10 is provided with a hydraulic ejector cylinder 15.
The zero mold 8 is provided with ejector pins 25 and 27 (see FIG. 2) that are operated by the hydraulic ejector cylinder 15.

FIG. 2 is a longitudinal sectional view of a mold portion shown in FIG.
A cavity 17 is formed in the two molds 7 and 8 in the mold-clamped state, and the cavity 17 is connected to a sprue 19 of one mold 7 via a gate 18, and a sprue 1 is formed.
9 is connected to the tip nozzle 20 of the heating cylinder 6 from which the molten resin is injected. On the other hand, the hydraulic ejector 15a of the hydraulic ejector cylinder 15 is connected to the first eject plate 21 in the other mold 8, and the first eject plate 21
The gate cut pin 22 implanted in the second through-hole 23a of the second eject plate 23 penetrates the
You can move in and out.

The second eject plate 23 is connected with a first eject pin 25 for projecting the molded product 24 and a second eject pin 27 for projecting the sprue runner 26.

When the gate is cut, the hydraulic ejector 15a moves the first eject plate 21 until it comes into contact with the second eject plate 23, so that the tip of the gate cut pin 22 is moved from the outer wall surface of the gate 18 to the gate 18.
Is located on the surface of the cavity 17 for cutting.

When the molded product is ejected, the first eject plate 21 pushes the second eject plate 23 by the hydraulic ejector 15a, and the gate cut pin 22, the first eject pin 25, and the second eject pin 27 The molded product 24 and the sprue runner 26 are respectively protruded and operated until they are separated from the mold 8.

Next, a hydraulic circuit of the gate cut and protrusion control device 48 of this embodiment will be described with reference to FIG.

That is, the hydraulic circuit includes the hydraulic pump 2
9 is supplied to the gate cut solenoid valve 36.
After branching to the molded product ejecting electromagnetic valve 37, the fluid flows through the ejecting port 40 and the return port 41 connected to the hydraulic ejector cylinder 15 of the injection molding machine 49, merges again, and is returned to the oil tank. It has a configuration. In the figure, 30 is a pump load solenoid valve that operates as a pump load, and 34 and 35 are manual pressure regulating valves,
Reference numerals 2a, 32b, 33a, and 33b denote manual flow control valves. These manual pressure regulating valves 34, 35 and manual flow rate regulating valves 32a, 32b, 33a, 33b make the operating speed of the gate cut hydraulic ejector 15a faster than the operating speed of the molded product ejecting hydraulic ejector 15a. Is set so that no gate mark remains when the gate is cut. The operating speed for projecting the molded product is set to a low speed that does not cause cracks or the like in the molded product.

Normally, the hydraulic ejector cylinder 15 is configured to perform a molded product ejecting or ejecting operation by a hydraulic ejector solenoid valve 45 of an injection molding machine 49. That is, the protrusion of the molded product is determined by the injection molding machine 4.
The molded product ejecting solenoid valve 45a is turned on by a control signal from a control device 50 provided on the 9th side, oil flows into the hydraulic ejector cylinder 15 to push the hydraulic ejector 15a, and then the ejecting return is similarly performed. The electromagnetic valve 45b for ejecting and returning the molded product is turned on and the hydraulic ejector 15a
It is a hydraulic circuit that returns. In this hydraulic circuit, a detachable coupler 40 is provided in the middle of the pipes 42 and 43 connected to the hydraulic ejector cylinder 15.
a, 41a (see FIG. 5). When the control is performed by the gate cut and protrusion control device 48 of the present embodiment, the pipes 42 and 43 are removed by a coupler portion, and this portion is formed as a block (closed with a blind plug or the like). The cylinder 15 is connected via the ports 40 and 41.

FIG. 4 is a block diagram of the gate cut and protrusion control device 48 of this embodiment. This control device 48
The CPU 51 is provided with a CPU 51 for performing overall control, a gate cut start timing timer 60 for measuring a time for starting a gate cut, and a gate cut time timer 61 for measuring a time for performing a gate cut.
The CPU 51 receives signal lines from a control device 50 of the injection molding machine 49, such as a mold clamping signal 52, an injection signal 53, an ejector retreat completion signal 54, an ejector advance signal 55, an ejector retreat signal 56, and a mold opening interlock signal 57. Is to be entered via These connections are connected via an electric connector 59a (see FIG. 5).

The gate cut and protrusion control device 48 outputs a gate cut advance solenoid valve 36a, a gate cut retreat solenoid valve 36b, and a molded product protrusion solenoid valve 3a.
7a, a signal can be transmitted to the electromagnetic valve 37b for projecting and returning the molded product. Furthermore, a manual pressure regulating valve 3
4, 35, manual flow control valves 32a, 32b, 33a,
33b can be easily adjusted from outside,
Therefore, the adjustment of the flow rate and the pressure can be easily set.

The gate cut and protrusion control device 48 is housed in a box-shaped case 48c, as shown in FIG. 8, and a wheel (moving means) 48a is attached to a lower portion of the case 48c. A handle 48b for pushing the case 48c to run on the wheels 48a is attached to a side portion of the case 48c.

Next, the operation of the gate cut and protrusion control device 48 of this embodiment will be described with reference to the control flowcharts shown in FIGS.

First, in the case where the gate cut and protrusion control device 48 of this embodiment is not used, in step 1 (referred to as S1 in the figure, the same applies hereinafter), the power supply and the pump of the injection molding machine 49 are turned on. . Next, when the automatic mode is selected in step 2, the mold closing operation is started in step 3, and the mold closing operation is continued until it is detected in step 4 that the mold clamping is completed. And when the mold clamping is completed,
In step 5, resin injection is performed. When the injection-side operation is completed in step 6, the mold is opened in step 7.
Next, in step 8, an ejector advance command is issued to the hydraulic ejector cylinder 15, and the hydraulic ejector cylinder 15 starts to advance. Then, the hydraulic ejector 15a is advanced in step 19, and the operation of projecting the molded product is performed until the advance is confirmed in step 20. And
When the protrusion is completed, an ejector retreat command is issued to the hydraulic ejector cylinder 15 in step 9 to start retreating the hydraulic ejector 15a. Then, in step 22, the hydraulic ejector 15a is retracted, and in step 23
Until the retraction is confirmed in the above, the molded product is pushed back. Thereafter, when retreat is confirmed in step 23, one cycle of the injection molding process ends in step 10.

Next, a control procedure by the gate cut and protrusion control device 48 of this embodiment will be described.

First, in step 11, the power supply and the pump of the control device 48 are turned on.

Next, the mold clamping completion signal 52 and the injection signal 53 from the control device 50 of the injection molding machine 49 are transmitted to the control device 48.
On the condition that the input has been input to the CPU 51, the time measurement by the gate cut start timing timer 60 in the control device 48 is started in step 12, and the measured time is sequentially counted up in step 13,
When the predetermined time has elapsed, measurement of the gate cut time timer 61 is started in step 14. At the same time, in step 16, the gate cut advance solenoid valve 36 a is turned on by a signal from the CPU 51, and the hydraulic ejector 15
a is advanced to perform gate cutting.

When the time measured by the gate cut timer 61 reaches a predetermined time in step 15, the gate cut retreat solenoid valve 36b is turned on by a signal from the CPU 51 in step 17, and the hydraulic ejector 15a is turned on. And the gate cut operation is terminated.

When the mold opening command is issued in step 7, the mold is opened, and in steps 18 to 23, the molded product is ejected.

That is, in step 8, the injection molding machine 4
When the ejector advance signal 55 is input to the CPU 51 of the gate cut and eject control device 48 from step 9, the molded article eject forward electromagnetic valve 37a is turned on by the signal from the CPU 51 in step 18, and the hydraulic ejector 15a moves forward. start. Then, the forward movement of the hydraulic ejector 15a is continued in step 19, and the molded product ejecting operation is performed until the forward movement is confirmed in step 20.

When the molded article ejection operation is completed, the ejector retreat signal 56 is input from the injection molding machine 49 to the CPU 51 of the gate cut and ejection control device 48 in step 9, and the CPU proceeds to step 21.
The electromagnetic valve 37 for projecting and returning the molded product by a signal from 51
b is turned on, and the hydraulic ejector 15a starts to retreat. Then, at step 22, the hydraulic ejector 1
The retraction of 5a is continued, and the molded product is ejected and returned until the retraction is confirmed in step 23. And
If retraction is confirmed in step 23, one cycle of the injection molding process ends in step 10.

As described above, according to the gate cut and protrusion control device 48 of this embodiment, the gate cut and protrusion control device 48 is manufactured separately while the hydraulic and electric control device on the side of the injection molding machine 49 is left as it is. , Injection molding machine 4
9, the modification of the injection molding machine 49 can be minimized, and the labor involved in the modification can be greatly reduced.

Further, according to the gate cut and protrusion control device 48 of the present embodiment, the operating conditions of the hydraulic ejector 15a can be changed between the time of gate cut and the time of protrusion of the molded product, and the respective operating conditions can be optimized. It can be.

That is, the operating speed of the hydraulic ejector 15a at the time of gate cutting, that is, the speed (flow rate) and pressure of the hydraulic circuit of the hydraulic ejector cylinder 15 is different from that at the time when the molded product 24 and the sprue runner 26 protrude. The speed (flow rate) and the pressure can be set, the gate cut pin 22 can be operated at a high speed according to the gate cut at the time of gate cut, and no gate mark or the like remains on the cut surface of the gate cut. Can be shortened.
At the same time, when the molded product 24 or the like is protruded, the pins 22, 25, and 27 can be operated at a correspondingly low speed.
There are no cracks in the molded product.

Further, according to the gate cut and protrusion control device 48 of this embodiment, the hydraulic ejector cylinder 15
The gate cut and protrusion control device 48 is connected to the couplers 40a and 4 provided on the couplers provided on the pipes connected to the electric control device and the electric connection device provided on the electric control device.
By removably connecting the hydraulic ejector cylinder 15 and the electric control device of the injection molding machine 49 via the electrical connection device 1a and the electric connection device 59a, the control device 48 can be easily and quickly connected to the injection molding machine 49. .

Further, according to the gate cut and protrusion control device 48 of the present embodiment, the case 4
The wheels 48a provided on the 8c can be moved near the injection molding machine 49 when necessary, and can be retreated to a position away from the injection molding machine 49 when unnecessary.

In the above embodiment, the gate cut and protrusion control device 48 for controlling an actuator such as a hydraulic ejector has been described. However, as the actuator, the hydraulic ejector of the injection molding machine 49 (for example, a coring cylinder for performing coring) ) Can be applied.

In this case, the hydraulic pressure on the injection molding machine 49 side
With the electric control device as it is, a separate actuator control device may be manufactured and connected to the injection molding machine 49 in the same manner as in the above-described embodiment. Therefore, the modification of the injection molding machine 49 can be minimized, The labor involved in remodeling can be greatly reduced.

Further, the coupler provided on the pipe connected to the actuator (coring cylinder) other than the hydraulic ejector cylinder and the electric connector provided on the electric control device are connected to the coupler provided on the coupler and the electric connector provided on the electric control device. If the actuator control device is detachably connected to the actuator via the electric connection tool, the actuator control device can be easily and quickly connected to the injection molding machine 49,
Thus, the injection molding machine 49 can be controlled by the actuator control device.

[0053]

As described above, according to the first aspect of the present invention,
According to the gate cut and protrusion control device described, 1
Alternatively, injection molding is performed by operating a plurality of ejector pins by a hydraulic ejector provided in the injection molding machine to cut the gate in the mold and to attach at least the molded product to the injection molding machine. A gate cut and protrusion control device for an injection molding machine,
A new gate cut and protrusion control device is manufactured separately while maintaining the hydraulic and electric control device on the injection molding machine side, separately from the existing hydraulic and electric control device that drives and controls the hydraulic ejector. Then, it suffices to connect to the injection molding machine, so that the modification of the injection molding machine can be minimized, and the labor involved in the modification can be greatly reduced.

[0054] Further, a setting means for setting a hydraulic ejector operating conditions at the time of gate cutting, separately Bei and means for setting the hydraulic ejector operating conditions at the time of protrusion of the molded article
Therefore , the operating conditions of the hydraulic ejector can be changed between when the gate is cut and when the molded product is protruded, and the respective operating conditions can be optimized.

[0055] Further, the movable coupler is provided detachably in a pipe connected to the hydraulic ejector cylinder of the injection molding machine, capable electrical connector is provided detachably to the hydraulic and electrical control unit of the injection molding machine, In addition, the couplers and the electric connectors connected to these couplers or the electric connectors are used for the gate cut and the protrusion control of the injection molding machine.
The hydraulic ejector and the hydraulic / electric control device are detachably connected to the hydraulic ejector and the hydraulic / electric control device through these couplers or connectors. And by connecting the gate cut and protrusion control device to the hydraulic ejector cylinder and the hydraulic and electric control device via the coupler and the electric connection device provided in the electric connection device in a detachable manner. The gate cut and protrusion control device can be easily and quickly connected to the injection molding machine, so that the gate cut and protrusion control device can control the injection molding machine.

According to the gate cut and protrusion control device of the second aspect of the present invention, in the gate cut and protrusion control device of the injection molding machine according to the first aspect , the case surrounding the outside and the case are provided in this case. And a moving means provided in a case surrounding the outside, so that the moving means can be moved to a position near the injection molding machine when necessary, and evacuated to a position distant from the injection molding machine when unnecessary. be able to.

According to the actuator control device of the third aspect of the present invention, one of the components other than the ejector pins of the injection molding machine is used.
Or an actuator control device that operates a plurality of members by an actuator other than a hydraulic ejector cylinder provided in the injection molding machine, separately from an existing hydraulic / electric control device that drives and controls the actuator in the injection molding machine. Since it is newly provided, it is only necessary to manufacture the actuator control device separately and connect it to the injection molding machine while keeping the hydraulic and electric control device on the injection molding machine side as it is, so that the modification of the injection molding machine is minimized. And the labor involved in the remodeling can be greatly reduced.

[0058] Further, the actuator freely couplers detachably attached to the pipe to be connected is provided with Rutotomoni, the injection molding machine hydraulic and electric control device detachably electrical connector is provided for, these couplers or electrical connection The couplers and electrical connectors connected to the injection molding machine
The actuator and the hydraulic / electric control device are provided in the actuator control device through these couplers or connectors.
The actuator control device is connected to a coupler provided in a pipe connected to an actuator other than the hydraulic ejector cylinder and an electric connector provided in the hydraulic / electric control device. The actuator control device can be easily and quickly connected to the injection molding machine by being detachably connected to the actuator and the hydraulic / electric control device via the coupler and the electric connection device provided in the control device. The device can control the injection molding machine.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of a general injection molding machine in a mold clamping state.

FIG. 2 is a longitudinal sectional view of a mold part of FIG.

FIG. 3 is a main part of a hydraulic circuit of a gate cut and protrusion control device according to an embodiment of the present invention.

FIG. 4 is a block diagram of the control device of FIG. 3;

5 is a plan view showing a state of piping and wiring between the control device of FIG. 4 and an injection molding machine.

FIG. 6 is a flowchart illustrating a control procedure of the control device of FIG. 4;

FIG. 7 is a flowchart showing a control procedure of the control device of FIG. 4;

FIG. 8 is a diagram showing the appearance of the control device of FIG. 4;

[Explanation of symbols]

 7, 8 Mold 15 Hydraulic ejector cylinder 15a Hydraulic ejector 17 Cavity 18 Gate 19 Spool 20 Nozzle 21 First eject plate 22 Gate cut pin 23 Second eject plate 24 Molded product 25 First eject pin 26 Spool runner 27 Second eject pin 29 Hydraulic Pump 30 Pump Load Solenoid Valve 32a, 32b, 33a, 33b Manual Flow Control Valve 36 Gate Cut Solenoid Valve 36a Gate Cut Advance Solenoid Valve 36b Gate Cut Retraction Solenoid Valve 37 Molded Product Protruding Solenoid Valve 37a Molding Electromagnetic valve for projecting and protruding 37b Solenoid valve for projecting and returning molded product 40 Projection side port 41 Return side port 40a, 41a Coupler 48 Gate cut and projection control device 48a Wheel (moving means) 48c Case 49 Injection Forms machine 51 CPU 59a electrically connecting device 60 gate cut start timing timer 61 gates cut time timer

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Toshio Inage 384-1, Shichitakeyama, Niigata City, Niigata Prefecture Niigata Iron Works Niigata Branch (56) References JP 1-222525 (JP, A) JP Hei 4-47914 (JP, A) JP-A-57-167233 (JP, A) JP-A-7-108570 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B29C 45 / 26-45/44 B29C 45/76-45/82

Claims (3)

(57) [Claims] Injection molding wherein one or a plurality of ejector pins are operated by a hydraulic ejector cylinder provided in an injection molding machine to cut a gate in a mold and at least project a molded product from the mold. a gate cutting and protruding controller of the injection molding machine is attached to the machine, separately newly provided with the injection molding machine of the hydraulic ejector existing hydraulic and electric control unit for driving and controlling the cylinder, gate cut Operating conditions for the hydraulic ejector cylinder
Setting means for setting, and the hydraulic edge when the molded product is ejected.
And means for setting operating conditions of the ejector cylinder are provided separately.
For example, it is connected to the hydraulic ejector cylinder of the injection molding machine
A detachable coupler is provided in the piping, and the
Removable electrical connection to hydraulic and electrical control devices of injection molding machines
Fittings and these couplers or electrical connectors
The coupler and the electrical connector connected to the injection molding machine
Provided in the gate cut and protrusion control device of the hydraulic ejector through these couplers or connectors.
It can be connected to the cylinder and hydraulic / electrical control unit detachably.
A gate cut and protrusion control device for an injection molding machine, characterized in that the control device is configured to be able to control the gate cut and protrusion. 2. The apparatus according to claim 1, further comprising a case surrounding the outside, and moving means provided in the case.
2. A gate cut and protrusion control device of the injection molding machine according to 1 . 3. An actuator control device for an injection molding machine, which is attached to an injection molding machine that operates one or more members other than an ejector pin of the injection molding machine by an actuator other than a hydraulic ejector cylinder provided in the injection molding machine. A newly provided cap, which is newly provided separately from an existing hydraulic and electric control device for drivingly controlling the actuator in the injection molding machine, and which is detachably mounted on a pipe connected to the actuator.
And the hydraulic and electric power of the injection molding machine.
The air control device is provided with a detachable electric connector , and these couplers or couplers connected to the electric connector
And the electric connection device controls the actuator of the injection molding machine.
Device, and the actuator is connected to the
So that it can be detachably connected to the
Actuation of an injection molding machine characterized by comprising
Data controller.