CN109909476A - Squeeze pin control device and die casting machine with the squeeze pin control device - Google Patents
Squeeze pin control device and die casting machine with the squeeze pin control device Download PDFInfo
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- CN109909476A CN109909476A CN201811409102.3A CN201811409102A CN109909476A CN 109909476 A CN109909476 A CN 109909476A CN 201811409102 A CN201811409102 A CN 201811409102A CN 109909476 A CN109909476 A CN 109909476A
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Abstract
The present invention provides a kind of squeeze pin control device with easy loop structure and the die casting machine with the squeeze pin control device.Squeeze pin control device (30) has pressurized cylinder (40) and detection cylinder (50), pressurized cylinder accommodates the pressurizing piston (41) for making squeeze pin (42) to retreat, and detection cylinder has detection piston (51) and detects position by position sensor (52).In addition, pass through connection switching valve (60) and reversal valve (70), pressurized cylinder (40) and detection cylinder (50) is set to be switched to series connection and be connected in parallel, and it is positive (advance) and reversed (retrogressing) to be switched to the flow direction of working oil.
Description
Technical field
The present invention relates to a kind of squeeze pin control device and the die casting machine with the squeeze pin control device.
Background technique
Patent document 1 discloses the control dress that the melt intracavitary to the type of filling to mold carries out the loaded pins of pressurized
It sets.The control device has booster, supplies working oil in the cylinder which is provided with loaded pins to the front end in bar portion.Increase
Depressor is made of single-rod cylinder, and has charged piston.Control device detects pressurization by the sensor being arranged on booster
The position of piston, and confirm whether the bar portion of cylinder retreats based on the position of charged piston.
Existing technical literature
Patent document
Patent document 1: Japanese Patent No. 4520007
Summary of the invention
Problems to be solved by the invention
By above-mentioned control device, cylinder and booster return to origin at the end of movement respectively and prepare next time dynamic
Make.Therefore, booster and cylinder is connected in series, makes booster and cylinder when carrying out and returning to origin movement
It is connected in parallel.But in above-mentioned control device, multiple open and close valves for switching circuit are needed, loop structure is complicated.
Therefore, the purpose of the present invention is to provide a kind of squeeze pin control devices and tool with easy loop structure
There is the die casting machine of the squeeze pin control device.
The means used to solve the problem
In order to achieve the above object, the squeeze pin control device of one embodiment of the present invention, which is characterized in that
It includes
Pressurized cylinder accommodates the pressurizing piston for making squeeze pin retreat,
Cylinder is detected, detection piston is accommodated,
Position sensor detects the position of the detection piston,
Switching valve is connected, there is A interface, B interface, P interface and T interface, and at least there is A interface and T orifice
And B interface and P orifice be connected in parallel position and A interface with P orifice and B interface is connected with what T interface was cut off
Link position,
Reversal valve has A interface, B interface, P interface and T interface, and at least with A interface is with P orifice and B connects
Mouth is with the retrogressing flow locations and A interface and T orifice of T orifice and position is flowed in the advance of B interface and P orifice
It sets,
The rear grease chamber of the pressurized cylinder is connect by first flow path with the B interface of the reversal valve,
Second flow path connects the P interface of the preceding grease chamber of the pressurized cylinder and the connection switching valve,
Third flow path connects the A interface of the rear grease chamber of the detection cylinder and the connection switching valve,
4th flow path meets the A of the preceding grease chamber of the detection cylinder, the B interface of the connection switching valve and the reversal valve
Mouth connection,
Control unit；
The P interface of the reversal valve is connect with the pump of supply working oil,
The T interface of the reversal valve and the T interface of the connection switching valve are connect with the fuel tank for being discharged working oil,
The control unit
(1) when making the pressurizing piston advance, position is connected in series and makes described so that the connection switching valve is in
The mode that reversal valve is in advance flow locations is controlled,
(2) when retreating the pressurizing piston, position is connected in series and makes described so that the connection switching valve is in
The mode that reversal valve is in retrogressing flow locations is controlled,
(3) when making the pressurizing piston and the detection piston returns to origin, so that the connection switching valve is in simultaneously
Join link position and the mode for making the reversal valve be in retrogressing flow locations controlled,
(4) position based on the detection piston detected by the position sensor, moves the pressurizing piston
It is detected as state.
In order to achieve the above object, the squeeze pin control device of another mode of the invention, which is characterized in that
It includes
Pressurized cylinder accommodates the pressurizing piston for making squeeze pin retreat,
Cylinder is detected, detection piston is accommodated,
Position sensor detects the position of the detection piston,
Switching valve is connected, there is A interface, B interface, P interface and T interface, and at least there is A interface and T orifice
And B interface and P orifice be connected in parallel position and A interface with P orifice and B interface is connected with what T interface was cut off
Link position,
Reversal valve has A interface, B interface, P interface and T interface, and at least with A interface is with P orifice and B connects
Mouth is with the retrogressing flow locations and A interface and T orifice of T orifice and position is flowed in the advance of B interface and P orifice
It sets,
The rear grease chamber of the detection cylinder is connect by first flow path with the B interface of the reversal valve,
Second flow path connects the P interface of the preceding grease chamber of the detection cylinder and the connection switching valve,
Third flow path connects the A interface of the rear grease chamber of the pressurized cylinder and the connection switching valve,
4th flow path meets the A of the preceding grease chamber of the pressurized cylinder, the B interface of the connection switching valve and the reversal valve
Mouth connection,
Control unit；
The P interface of the reversal valve is connect with the pump of supply working oil,
The T interface of the reversal valve and the T interface of the connection switching valve are connect with the fuel tank for being discharged working oil,
The control unit
(1) when making the pressurizing piston advance, position is connected in series and makes described so that the connection switching valve is in
The mode that reversal valve is in advance flow locations is controlled,
(2) when retreating the pressurizing piston, position is connected in series and makes described so that the connection switching valve is in
The mode that reversal valve is in retrogressing flow locations is controlled,
(3) when making the pressurizing piston and the detection piston returns to origin, so that the connection switching valve is in simultaneously
Join link position and the mode for making the reversal valve be in retrogressing flow locations controlled,
(4) position based on the detection piston detected by the position sensor, moves the pressurizing piston
It is detected as state.
In the present invention, it is preferred to the reversal valve has the flow adjustment portion being adjusted to the flow of the working oil,
The control unit detects the forward speed of the pressurizing piston as the action state of the pressurizing piston, so that before this
Into speed close to the mode of setting speed, feedback control is carried out to the flow adjustment portion of the reversal valve.
In the present invention, it is preferred to which the control unit is based on the past advance end position of the pressurizing piston to change
State setting speed.
In the present invention, it is preferred to which whether the control unit is in for each time the forward speed of the pressurizing piston
Or determined in the normal range (NR) of each position setting, when being not in normal range (NR), abnormal conditions are had occurred in notice.
In order to achieve the above object, the die casting machine of other modes of the invention, have make mold be opened and closed mold closing mechanism, to
By the injection device of the type intracavitary administration melt of the mold of the mold closing mechanism die closing and make squeeze pin relative to the mold
Type chamber retreat squeeze pin control device, which is characterized in that the squeeze pin control device is by above-mentioned squeeze pin control device
It constitutes.
The effect of invention
According to the present invention, by being respectively provided with the connection switching valve and reversal valve of 4 interfaces, pressurized cylinder and inspection can be made
It surveys cylinder to be switched to series connection and be connected in parallel, and it is positive (advance) and reversed to be switched to the flow direction of working oil
(retrogressing).Therefore, the structure for being able to detect the position of pressurizing piston can be realized by easy circuit.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the major part of the die casting machine of an embodiment of the invention.
Fig. 2A, Fig. 2 B are illustrated the cross-sectional view of the state in the type chamber of squeeze pin insertion mold in the die casting machine of Fig. 1.
Fig. 3 is the loop diagram (preparatory action) of the movement of the squeeze pin control device of the die casting machine of explanatory diagram 1.
Fig. 4 is the loop diagram (forward motion) of the movement of the squeeze pin control device of the die casting machine of explanatory diagram 1.
Fig. 5 is the loop diagram (backward movement) of the movement of the squeeze pin control device of the die casting machine of explanatory diagram 1.
Fig. 6 is the loop diagram (returning to origin movement) of the movement of the squeeze pin control device of the die casting machine of explanatory diagram 1.
Fig. 7 is the loop diagram (preparatory action) of the movement of the variation of the squeeze pin control device of the die casting machine of explanatory diagram 1.
Fig. 8 is the loop diagram (forward motion) of the movement of the variation of the squeeze pin control device of the die casting machine of explanatory diagram 1.
Fig. 9 is the loop diagram (backward movement) of the movement of the variation of the squeeze pin control device of the die casting machine of explanatory diagram 1.
Figure 10 is that the loop diagram of the movement of the variation of the squeeze pin control device of the die casting machine of explanatory diagram 1 (returns to origin
Movement).
Description of symbols
1 ... die casting machine, 10 ... mold closing mechanisms, 11 ... fixed forms, 12 ... moving die plates, 13 ... injection chambers, 14 ... injections
Mouth, 20 ... injection devices, 21 ... stopper heads, 22 ... injection rams, 30,30A ... squeeze pin control device, 40 ... pressurized cylinders,
41 ... pressurizing pistons, 42 ... squeeze pins, the front end of 42a ... squeeze pin, the rear grease chamber of 45 ... pressurized cylinders, 46 ... pressurized cylinders preceding oil
Room, 50 ... detection cylinders, 51 ... detection pistons, 52 ... position sensors, 55 ... detection cylinders rear grease chamber, 56 ... detection cylinders preceding oil
Room, 60 ... connection switching valves, 70 ... reversal valves, 81 ... pressure sensors, 82 ... pressure reducing valves, 83 ... motors, 84 ... pumps, 85 ... oil
Case, 90 ... control units, K1 ... fixing mould, K2 ... move moulds, C ... type chamber, M ... metal melt, R1 ... first flow path, R2 ...
Second flow path, R3 ... third flow path, the 4th flow path of R4 ..., the origin of O ... pressurizing piston, L ... pressurizing piston advance stop bits
It sets.
Specific embodiment
Hereinafter, referring to Fig.1~Fig. 3, is illustrated the die casting machine of an embodiment of the invention.
Fig. 1 is the cross-sectional view of the major part of the die casting machine of an embodiment of the invention.Fig. 2A, Fig. 2 B are to illustrate to incite somebody to action
Squeeze pin is inserted into the partial sectional view of the state in the type chamber of mold.Fig. 2A shows the state before insertion, after Fig. 2 B shows insertion
State.Fig. 3~Fig. 6 is movement (preparatory action, forward motion, backward movement and the return for illustrating squeeze pin control device
Origin movement) loop diagram.
The die casting machine 1 of present embodiment has mold closing mechanism 10, injection device 20, squeeze pin control device 30 and control
Portion 90.
Mold closing mechanism 10, which has, to be equipped with the fixed form 11 of fixing mould K1 and is equipped with the movement for the K2 that moves moulds
Template 12.Fixed form 11 has cylindric injection chamber 13.It is formed with inlet 14 on the top of injection chamber 13, by not scheming
The ladle injection metal melt M shown.Mold closing mechanism 10 makes fixing mould K1 and the K2 that moves moulds realizes die closing and die sinking.It is closing
The inside shape forming cavity C of the fixing mould K1 of mould and the K2 that moves moulds.
Injection device 20 includes injection ram 22, is equipped with stopper head 21 in its front end；Injection cylinder (not shown) makes to infuse
Penetrate the advance and retreat of piston 22.Stopper head 21 configures in injection chamber 13.Injection device 20 is by making injection ram 22 advance, by injection chamber
Metal melt M in 13 is injected and is filled into type chamber C.
Squeeze pin control device 30 has pressurized cylinder 40, detection cylinder 50, connection switching valve 60 and reversal valve 70.
Pressurized cylinder 40 is configured in the inside of fixing mould K1.Pressurized cylinder 40 accommodates pressurizing piston 41.In pressurizing piston 41
On be fixed with squeeze pin 42.If by the working oil supplied to pressurized cylinder 40 make pressurizing piston 41 retreat, squeeze pin 42 also into
It moves back.The front end 42a of squeeze pin 42 is moved between origin O (alphabetical O) and advance end position L, and insert type chamber C or therefrom
It extracts.
Detection cylinder 50 accommodates detection piston 51.Position sensor 52, position sensor 52 are set in detection cylinder 50
The linear encoder etc. detected including the position to detection piston 51.
Connection switching valve 60 is the solenoid valve for switching valve body position by electromagnetic component.Connection switching valve 60 connects with A
Mouth, B interface, P interface and T interface 4 interfaces.As valve body position, connecting switching valve 60, there is A interface and T interface to connect
The string for being connected in parallel position and A interface and P orifice and B interface and T interface are cut off of logical and B interface and P orifice
Join link position.Switching valve 60 is connected by switching valve position, pressurized cylinder 40 and detection cylinder 50 is made to be connected in parallel or connect
Connection.Connection switching valve 60 can have the neutral position that will be cut off between total interface, preferably at least has and is connected in parallel position
Set and be connected in series position.
Reversal valve 70 is the solenoid valve by electromagnetic component switching valve position.Reversal valve 70 has A interface, B interface, P
4 interfaces of interface and T interface.As valve body position, reversal valve 70 is with A interface is with P orifice and B interface connects with T
Advance flow locations of the retrogressings flow locations of mouthful connection, A interface and T orifice and B interface and P orifice and by institute
There is the neutral position cut off between interface.The flow direction switching of working oil is positive by reversal valve 70 by switching valve position
To (squeeze pin advance) or reversed (squeeze pin retrogressing).It is preferred that reversal valve 70, which at least has, retreats flow locations and flowing of advancing
Position.
Reversal valve 70 has flow adjustment portion, and the flow adjustment portion is according to input current to the working oil in internal flow
Flow is adjusted.
The rear grease chamber 45 of pressurized cylinder 40 is connect with the B interface of reversal valve 70 by first flow path R1.The preceding oil of pressurized cylinder 40
Room 46 is connected with the P interface for connecting switching valve 60 by second flow path R2.Detect cylinder 50 rear grease chamber 55 with connect switching valve 60
A interface pass through third flow path R3 connection.It detects the preceding grease chamber 56 of cylinder 50, connect the B interface of switching valve 60 and the A of reversal valve 70
Interface passes through the 4th flow path R4 connection.The pressure that the pressure of working oil for the rear grease chamber 45 to pressurized cylinder 40 is detected passes
Sensor 81 is arranged on first flow path R1.
The P interface of reversal valve 70 is connect via pressure reducing valve 82 with the pump 84 driven by motor 83.Pressure reducing valve 82 is according to input
Current convection is limited to the pressure of the working oil of the P interface of reversal valve 70.Connect the T interface and reversal valve of switching valve 60
70 T interface is connect with the fuel tank 85 for being discharged working oil.
Die casting machine 1 has the control unit 90 for being responsible for whole movement.Control unit 90 has the microcomputer of embedded device
Calculation machine, the microcomputer of the embedded device is for example with CPU, ROM, RAM, EEPROM and various I/O interfaces etc..Control
Portion 90 processed is by controlling various driving portions possessed by each device, Lai Zhihang die closing process, casting process, injection work
Sequence, pressurization process (pressure maintaining and cooling process), die sinking process and product ejection process etc..
In a series of actions of product shaping, firstly, die casting machine 1 keeps moving die plate 12 mobile to make fixing mould K1
And the K2 molding (die closing process) that moves moulds.Then, metal melt M (casting is injected into the injection chamber 13 of fixed form 11
Process).Then, so that injection ram 22 is advanced, the metal melt M in injection chamber 13 is injected by stopper head 21 and is filled to type
In chamber C (injection process).In turn, (pressurization process) is pushed in metal melt M and push-in type chamber C by stopper head 21.Hereafter, it beats
Mold (die sinking process), from type chamber ejecting product (product ejection process).In addition, die casting machine 1 concurrently leads to pressurization process
It crosses squeeze pin and carries out pressurized (pressurized process).
In the present embodiment, the connection switching valve 60 of control unit 90 and squeeze pin control device 30, reversal valve 70, decompression
Valve 82 and motor 83 connect, and send control signal to them to control.Control unit 90 and position sensor 52 and pressure
Sensor 81 connects, and receives detection signal from them, and come the position and speed to detection piston and add based on detection signal
The pressure of the rear grease chamber 45 of cylinder pressure 40 is detected.
Then, referring to table 1 and Fig. 3~Fig. 6, illustrate in the control unit 90 of the die casting machine 1 of above-mentioned present embodiment
One example of pressurized processing (pressurized process) of the invention.In the various figures, the block arrow of grey is schematically shown
The flow direction of working oil out.Under the original state of pressurized processing, the front end 42a of squeeze pin 42 is located at origin O.
(1) as shown in figure 3, before injection process terminates, as preparatory action, control unit 90 makes to connect switching valve 60
Valve body position is in and is connected in parallel position, and the valve body position of reversal valve 70 is made to be in neutral position.Then, control unit 90 is to subtracting
Pressure valve 82 sets the pressure upper limit for flowing to the working oil of P interface of reversal valve 70.Control unit 90 makes the dynamic of the motor 83 of working oil
Make to start simultaneously transfer tube 84.Working oil flow to the P interface of reversal valve 70 by pressure reducing valve 82 from fuel tank 85 as a result, but front because
Circuit is cut off and limits flowing.
(2) as shown in figure 4, if injection process terminates and starts to carry out pressurization process, forward motion, control unit 90 are used as
It is in the valve body position for connecting switching valve 60 and position is connected in series, and the valve body position of reversal valve 70 is made to be in flowing position of advancing
It sets.
Working oil flows into the rear oil of pressurized cylinder 40 by the P interface and B interface and first flow path R1 of reversal valve 70 as a result,
Room 45 makes pressurizing piston 41 advance (mobile to the left direction of figure).By the advance of pressurizing piston 41, before making pressurized cylinder 40
Working oil in grease chamber 46 flows into inspection by second flow path R2, the P interface of connection switching valve 60 and A interface and third flow path R3
The rear grease chamber 55 for surveying cylinder 50 makes to detect the advance of piston 51.By the advance of detection piston 51, make to detect in the preceding grease chamber 56 of cylinder 50
Working oil by the 4th flow path R4, reversal valve 70 A interface and T interface, be finally expelled to fuel tank 85.By the stream of working oil
It is dynamic, so that pressurizing piston 41 is moved to advance end position L from origin O, and the state is kept for the defined time.
At this point, control unit 90 based on the detection signal of position sensor 52 to the action state as pressurizing piston 41 before
Detected into speed, and by make the forward speed close to setting speed in a manner of, the flow adjustment portion of reversal valve 70 is carried out
Feedback control (PID control), to be adjusted to the flow for the working oil for flowing through reversal valve 70.In the present embodiment, it presses
Setting speed is set according to each position of pressurizing piston 41.Alternatively, can be according to the advance sart point in time of self-pressurization piston 41
The each time risen sets setting speed.In addition, control unit 90 is by ± 10% range using centered on setting speed as just
Normal range, and whether the forward speed of pressurizing piston 41 is in the normal range (NR) of each position or each time and is sentenced
It is fixed, when being not in normal range (NR), in a manner of alarming by buzzer etc. etc. notify that abnormal conditions have occurred.Control unit 90
It when the forward speed that repeated detection goes out pressurizing piston 41 is not in normal range (NR) can notify that abnormal conditions have occurred.
In addition, control unit 90 can also detect signal to the pressure of the rear grease chamber of pressurized cylinder 40 based on pressure sensor 81
Detected, it is identical as forward speed, by make the pressure close to setting pressure in a manner of, to the flow adjustment portion of reversal valve 70 into
Row feedback control, to be adjusted to the flow for the working oil for flowing through reversal valve 70.It is identical as setting speed, it can also be according to
Setting of each time setting pressure that each position of pressurizing piston 41 or the advance time started of self-pressurization piston 41 light.Separately
Outside, control unit 90 can be by ± 10% range centered on setting pressure as normal range (NR), after pressurizing piston 41
Whether the pressure of grease chamber 45, which is in the normal range (NR) of each position or each time, is determined, is being not in normal range (NR)
When, in a manner of alarming by buzzer etc. etc. notify that abnormal conditions have occurred.
(3) as shown in figure 5, if forward motion terminates, it is used as backward movement, control unit 90 makes the valve for connecting switching valve 60
It is constant that body position is in series connection position, and makes the valve body position of reversal valve 70 in retrogressing flow locations.
Working oil flows into the preceding oil of detection cylinder 50 by the P interface and A interface of reversal valve 70 and the 4th flow path R4 as a result,
Room 56 makes to detect the retrogressing of piston 51 (mobile to the right direction of figure).By the retrogressing of detection piston 51, make after detecting cylinder 50
The working oil of grease chamber 55 is flowed into and is added by third flow path R3, the A interface of connection switching valve 60 and P interface and second flow path R2
The preceding grease chamber 46 of cylinder pressure 40, so that pressurizing piston 41 be made to retreat.By the retrogressing of pressurizing piston 41, make the rear grease chamber of pressurized cylinder 40
45 working oil is by first flow path R1, the B interface of reversal valve 70 and T interface, to finally be expelled to fuel tank 85.By work
The flowing of oil keeps pressurizing piston 41 mobile from advance end position L towards origin O.At this point, because of pressurized cylinder 40 and detection cylinder 50
Construction difference or the leakage of working oil etc., pressurizing piston 41 can not accurately return to origin O sometimes, but it is attached to be parked in origin
The position of nearly O '.
In addition, control unit 90 detects the position of pressurizing piston 41 based on the detection signal of position sensor 52, from
And determine whether pressurizing piston 41 retreats.Control unit 90, if it is determined that pressurizing piston 41 does not retreat, then notice has occurred
Abnormal conditions.
(4) as shown in fig. 6, if backward movement terminates, as origin movement is returned, control unit 90 makes to connect switching valve 60
Valve body position be in be connected in parallel position, and make reversal valve 70 valve body position be in retreat flow locations it is constant.
Working oil is by the P interface and A interface of reversal valve 70 and the 4th flow path R4 as a result, before flowing into pressurized cylinder 40
Grease chamber 46 and the preceding grease chamber 56 for detecting cylinder 50 retreat pressurizing piston 41 and detection piston 51.In addition, by pressurizing piston
41 retrogressing makes the working oil of the rear grease chamber 45 of pressurized cylinder 40 by first flow path R1, the B interface of reversal valve 70 and T interface, most
It is expelled to fuel tank 85 eventually.In addition, making the working oil for the rear grease chamber 55 for detecting cylinder 50 pass through third by the retrogressing of detection piston 51
Flow path R3, the A interface and T interface for connecting switching valve 60, are finally expelled to fuel tank 85.By the flowing of working oil, pressurization is made to live
Plug 41 and detection piston 51 retreat, until bumping against with stop part (not shown), the position of pressurizing piston 41 returns to origin O.Together
The position of sample, detection piston 51 also returns to origin.
In table 1, each valve body position for acting and connecting switching valve 60 and reversal valve 70 in pressurized processing is shown
Relationship between setting.
[table 1]
| (1) preparatory action | (2) forward motion | (3) backward movement | (4) origin movement is returned | |
| Connect switching valve | It is connected in parallel position | Position is connected in series | Position is connected in series | It is connected in parallel position |
| Reversal valve | Advance flow locations | Advance flow locations | Retreat flow locations | Retreat flow locations |
More than, die casting machine 1 according to the present embodiment, squeeze pin control device 30 passes through connection switching valve 60 and commutation
Pressurized cylinder 40 and detection cylinder 50 can be switched to series connection and be connected in parallel by valve 70, and by the flow direction of working oil
It is switched to positive (advance) and reversed (retrogressing).It therefore, can be by the way that only there are two the easy circuits of switching valve to realize energy
Enough structures that the position of pressurizing piston 41 is detected.
In addition, reversal valve 70 has the flow adjustment portion being adjusted to the flow of working oil, 90 pairs of pressurizations of control unit are lived
The forward speed of plug 41 is detected, by make the forward speed close to setting speed in a manner of, the flow of reversal valve 70 is adjusted
Portion carries out feedback control.Therefore, more effectively forward speed can be made close to setting speed, and can accurately controls extruding
Pin.
In addition, whether control unit 90 is in for each time or the setting of each position the forward speed of pressurizing piston 41
Normal range (NR) in determined, when being not in normal range (NR), notice abnormal conditions have occurred.Therefore, it can examine in early days
The product quality problem measuring the remarkable action of device and being induced by it.
The structure of the die casting machine 1 of above embodiment has squeeze pin control device 30, which exists
When pressurized cylinder 40 and detection cylinder 50 is connected in series, the rear grease chamber 55 of the preceding grease chamber 46 of pressurized cylinder 40 and detection cylinder 50 is connected.But
It is that the present invention is not limited to the structures.For example, it is also possible to be the structure with squeeze pin control device 30A, such as Fig. 7~figure
Shown in 10, squeeze pin control device 30A will test the preceding grease chamber of cylinder 50 when pressurized cylinder 40 and detection cylinder 50 is connected in series
56 and pressurized cylinder 40 rear grease chamber 45 connect.Squeeze pin control device 30A is in addition to exchanging and inciting somebody to action pressurized cylinder 40 and detection cylinder 50
Other than pressure sensor 81 is set on third flow path R3, there is structure identical with squeeze pin control device 30.In addition, squeezing
Control device 30A is sold, identical as squeeze pin control device 30, in pressurized processing, above-mentioned (1)~(4) of progress are moved
Make, therefore detailed description will be omitted.Die casting machine with squeeze pin control device 30A is also realized and the die casting of above embodiment
The identical effect of machine 1.
In addition, control unit 90 can also be according to the past advance of pressurizing piston 41 in the die casting machine 1 of above embodiment
End position L changes the setting speed of pressurizing piston 41.The advance end position L of pressurizing piston 41 can be because of various condition (seasons
Section, period, the time from device starting, the variation for generating pump delivery or valve flow because of aging, working oil mistake
The blocking etc. of filter) and generate deviation.Thus, for example, control unit 90 is to past first time to advance end position L for several times
It is stored, and detecting variation tendency (is tendency of the advance end position L close to origin O, or inclining far from origin O
To).In addition, advance end position L next time is predicted according to tendency is changed, so that pressurizing piston 41 is parked in the advance and terminates
The mode of position L is adjusted setting speed or setting pressure.For example, increase and decrease is for each of pressurizing piston 41 on the whole
The setting speed of position setting, or is only increased and decreased the setting speed of partial section, or to acceleration area and constant speed section
Ratio changes.In such manner, it is possible to inhibit the deviation of advance end position L.Alternatively, it is also possible to chronically store advance stop bits
It sets L and learns variation tendency, setting speed or setting pressure are adjusted according to learning outcome.
In addition, die casting machine 1 for the above embodiment carries out repeatedly after equipment just starts for making motion stability
Preliminary forming movement (examination casting shaping actions).In the shaping actions of the preparation property, control unit 90 can start according to equipment
The length of preceding equipment dwell time gradually changes the advance end position L of squeeze pin 42, squeeze pin 42 is thus gradually increased
Pressure effect.Specifically, equipment dwell time is longer, then make the variable quantity of advance end position L smaller, when equipment stops
Between it is shorter, then make the variable quantity of advance end position L bigger.In such manner, it is possible to effectively operating stably, so as to inhibit to have matter
The generation of the product of amount problem.
It this concludes the description of embodiments of the present invention, but the present invention is not restricted to these example.The ordinary skill people of this field
Member is suitably additional to above-mentioned embodiment, delete constituent element, is designed change is formed by embodiment, or to reality
The technical characteristic for applying mode carries out embodiment that is appropriately combined and being formed and is included in this hair as long as meeting present inventive concept
In bright range.
Claims (6)
1. a kind of squeeze pin control device, which is characterized in that
It includes
Pressurized cylinder accommodates the pressurizing piston for making squeeze pin retreat,
Cylinder is detected, detection piston is accommodated,
Position sensor detects the position of the detection piston,
Switching valve is connected, there is A interface, B interface, P interface and T interface, and at least with A interface is with T orifice and B connects
Mouth is connected in parallel position and A interface and P orifice and the series connection position of B interface and the cutting of T interface with P orifice
It sets,
Reversal valve has A interface, B interface, P interface and T interface, and at least there is A interface and P orifice and B interface with
The retrogressing flow locations and A interface and T orifice of T orifice and the advance flow locations of B interface and P orifice,
The rear grease chamber of the pressurized cylinder is connect by first flow path with the B interface of the reversal valve,
Second flow path connects the P interface of the preceding grease chamber of the pressurized cylinder and the connection switching valve,
Third flow path connects the A interface of the rear grease chamber of the detection cylinder and the connection switching valve,
4th flow path connects the A interface of the preceding grease chamber of the detection cylinder, the B interface of the connection switching valve and the reversal valve
It connects,
Control unit；
The P interface of the reversal valve is connect with the pump of supply working oil,
The T interface of the reversal valve and the T interface of the connection switching valve are connect with the fuel tank for being discharged working oil,
The control unit
(1) when making the pressurizing piston advance, position is connected in series and makes the commutation so that the connection switching valve is in
The mode that valve is in advance flow locations is controlled,
(2) when retreating the pressurizing piston, position is connected in series and makes the commutation so that the connection switching valve is in
The mode that valve is in retrogressing flow locations is controlled,
(3) when making the pressurizing piston and the detection piston returns to origin, connect so that the connection switching valve is in parallel
It connects position and the mode for making the reversal valve be in retrogressing flow locations is controlled,
(4) position based on the detection piston detected by the position sensor, to the movement shape of the pressurizing piston
State is detected.
2. a kind of squeeze pin control device, which is characterized in that
It includes
Pressurized cylinder accommodates the pressurizing piston for making squeeze pin retreat,
Cylinder is detected, detection piston is accommodated,
Position sensor detects the position of the detection piston,
Switching valve is connected, there is A interface, B interface, P interface and T interface, and at least with A interface is with T orifice and B connects
Mouth is connected in parallel position and A interface and P orifice and the series connection position of B interface and the cutting of T interface with P orifice
It sets,
Reversal valve has A interface, B interface, P interface and T interface, and at least there is A interface and P orifice and B interface with
The retrogressing flow locations and A interface and T orifice of T orifice and the advance flow locations of B interface and P orifice,
The rear grease chamber of the detection cylinder is connect by first flow path with the B interface of the reversal valve,
Second flow path connects the P interface of the preceding grease chamber of the detection cylinder and the connection switching valve,
Third flow path connects the A interface of the rear grease chamber of the pressurized cylinder and the connection switching valve,
4th flow path connects the A interface of the preceding grease chamber of the pressurized cylinder, the B interface of the connection switching valve and the reversal valve
It connects,
Control unit；
The P interface of the reversal valve is connect with the pump of supply working oil,
The T interface of the reversal valve and the T interface of the connection switching valve are connect with the fuel tank for being discharged working oil,
The control unit
(1) when making the pressurizing piston advance, position is connected in series and makes the commutation so that the connection switching valve is in
The mode that valve is in advance flow locations is controlled,
(2) when retreating the pressurizing piston, position is connected in series and makes the commutation so that the connection switching valve is in
The mode that valve is in retrogressing flow locations is controlled,
(3) when making the pressurizing piston and the detection piston returns to origin, connect so that the connection switching valve is in parallel
It connects position and the mode for making the reversal valve be in retrogressing flow locations is controlled,
(4) position based on the detection piston detected by the position sensor, to the movement shape of the pressurizing piston
State is detected.
3. squeeze pin control device according to claim 1 or 2, which is characterized in that
The reversal valve has the flow adjustment portion being adjusted to the flow of the working oil,
The control unit detects the forward speed of the pressurizing piston as the action state of the pressurizing piston, so that
The forward speed carries out feedback control to the flow adjustment portion of the reversal valve close to the mode of setting speed.
4. squeeze pin control device according to claim 3, which is characterized in that
The control unit changes the setting speed based on the past advance end position of the pressurizing piston.
5. squeeze pin control device according to claim 3, which is characterized in that
The control unit is set just to whether the forward speed of the pressurizing piston is in for each time or each position
Determined in normal range, when being not in normal range (NR), abnormal conditions are had occurred in notice.
6. a kind of die casting machine, there is the mold closing mechanism for being opened and closed mold, to intracavitary by the type of the mold of the mold closing mechanism die closing
The squeeze pin control device injected the injection device of melt and squeeze pin is made to retreat relative to the type chamber of the mold, feature
It is,
The squeeze pin control device is made of squeeze pin control device according to any one of claims 1 to 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017225886A JP6909714B2 (en) | 2017-11-24 | 2017-11-24 | Squeeze pin controller and die casting machine with it |
| JP2017-225886 | 2017-11-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109909476A true CN109909476A (en) | 2019-06-21 |
| CN109909476B CN109909476B (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811409102.3A Active CN109909476B (en) | 2017-11-24 | 2018-11-23 | Extrusion pin control device and die casting machine having the same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6909714B2 (en) |
| CN (1) | CN109909476B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151723A (en) * | 2020-01-06 | 2020-05-15 | 肇庆谊龙科技有限公司 | Local pressurization system |
| CN114101623A (en) * | 2021-11-26 | 2022-03-01 | 广东鸿图科技股份有限公司 | Local pressurizing device for die casting |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110548854B (en) * | 2019-10-23 | 2021-12-10 | 广东宝洋科技有限公司 | Forging control method for metal product |
| CN112872322A (en) * | 2021-02-23 | 2021-06-01 | 广州和德轻量化成型技术有限公司 | Local extrusion device of indirect extrusion casting die and preparation method thereof |
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| CN114101623A (en) * | 2021-11-26 | 2022-03-01 | 广东鸿图科技股份有限公司 | Local pressurizing device for die casting |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6909714B2 (en) | 2021-07-28 |
| JP2019093427A (en) | 2019-06-20 |
| CN109909476B (en) | 2021-07-06 |
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