CN108568956A - Injection (mo(u)lding) machine - Google Patents
Injection (mo(u)lding) machine Download PDFInfo
- Publication number
- CN108568956A CN108568956A CN201810187785.6A CN201810187785A CN108568956A CN 108568956 A CN108568956 A CN 108568956A CN 201810187785 A CN201810187785 A CN 201810187785A CN 108568956 A CN108568956 A CN 108568956A
- Authority
- CN
- China
- Prior art keywords
- pressure
- molded product
- control device
- knock
- injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/80—Measuring, controlling or regulating of relative position of mould parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76655—Location of control
- B29C2945/76732—Mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of injection (mo(u)lding) machine for the surface accuracy that can improve the compressed molded product being molded with.The injection (mo(u)lding) machine has the control device controlled the advance and retreat of the movable member of the moulding material for compressing the cavity space for being filled in die device, after the control device controls the compression of the moulding material by controlling before the movable member, 1 decompression and 2 decompressions are controlled：1 decompression reduces the pressure by the molding molded product of the compression with prescribed model；2 decompressions further decrease the pressure of the molded product to specified position by retreating the movable member after being depressurized at described 1 time.
Description
Technical field
It is excellent this application claims the Japanese patent application the 2017-043250th based on March 7th, 2017 in Japanese publication
First weigh.The entire content of this Japanese application is incorporated by reference in this manual.
The present invention relates to a kind of injection (mo(u)lding) machines.
Background technology
Injection (mo(u)lding) machine described in patent document 1, the ejection platen for ejecting axis by driving to move moulds, to press
The resin of miniature intracavitary.
Patent document 1：Japanese Unexamined Patent Publication 2014-237216 bulletins
Remaining residual stress is greatly in the compressed molded product being molded in the past and the surface accuracy of molded product is poor.
Invention content
The present invention is to complete in view of the above problems, and main purpose is that compressed molding can be improved by providing one kind
Made of molded product surface accuracy injection (mo(u)lding) machine.
To solve the above-mentioned problems, a mode according to the present invention provides a kind of following injection (mo(u)lding) machine：Has control dress
It sets, advance and retreat of the control device to the movable member of the moulding material for compressing the cavity space for being filled in die device
It is controlled, and after controlling the compression of the moulding material by controlling before the movable member, 1 time is subtracted
Pressure and 2 decompressions are controlled, and 1 decompression reduces the pressure by the molding molded product of the compression with prescribed model
Power；2 decompressions, are further decreased by making the movable member retreat after being depressurized at described 1 time to specified position
The pressure of the molded product.
Invention effect
A mode according to the present invention provides a kind of surface accuracy that can improve the compressed molded product being molded with
Injection (mo(u)lding) machine.
Description of the drawings
Fig. 1 is the figure of the state at the end of indicating the die sinking of injection (mo(u)lding) machine according to an embodiment.
Fig. 2 is the figure of state when indicating the molding of injection (mo(u)lding) machine according to an embodiment.
Fig. 3 is the partial enlarged view of Fig. 2, and indicate knock-pin compression position of readiness state figure.
Fig. 4 is to indicate that knock-pin advances to the figure of the state of compression position from compression position of readiness shown in Fig. 3.
Fig. 5 is to indicate that knock-pin retreats the figure of the state to compression position of readiness from compression position shown in Fig. 4.
Fig. 6 is to indicate that knock-pin advances to the figure of the state of ejection position from compression position of readiness shown in fig. 5.
Fig. 7 is the pressure reducing mode of the compressed molded product being molded with more according to the embodiment and the warp according to comparative example
The figure of the pressure reducing mode of molded product made of compression forming.
In figure：10- die devices, 11- cover half, 12- dynamic models, 14- cavity spaces, 15- movable members, 16- springs, 17-
Sprue, 18- runners, 19- cast gates, 21- ejection platens, 22- compression core pins, 23- knock pins, 31- flowpath pressure detectors,
32- cavity space pressure detectors, 33- compress core pins pressure detector, 34- knock-pin pressure detectors, 200- ejection dresses
It sets, 210- ejects motor, 220- movement conversion mechanisms, 230- knock-pins, 700- control devices.
Specific implementation mode
Hereinafter, description of specific embodiments of the present invention for refer to the attached drawing, but in the drawings, for identical or right
The structure answered assigns identical or corresponding symbol, and omits the description.
(injection (mo(u)lding) machine)
Fig. 1 is the figure of the state at the end of indicating the die sinking of injection (mo(u)lding) machine according to an embodiment.Fig. 2 is to indicate root
According to the injection (mo(u)lding) machine of an embodiment molding when state figure.As shown in Fig. 1~Fig. 2, injection (mo(u)lding) machine has molding
Device 100, liftout attachment 200, injection device 300, mobile device 400 and control device 700.Hereinafter, to injection (mo(u)lding) machine
Each constitutive requirements illustrate.
(mold closing mechanism)
In the explanation to mold closing mechanism 100, by moving direction of the movable pressure plate 120 in mold closing (in Fig. 1 and Fig. 2
Right direction) it is set as front, moving direction (left direction in Fig. 1 and Fig. 2) of the movable pressure plate 120 in die sinking is set as rear
It illustrates.
Mold closing mechanism 100 carries out mold closing to die device 10, molds, die sinking.Mold closing mechanism 100 is e.g. horizontal, mold
Opening and closing direction is horizontally oriented.Mold closing mechanism 100 has fixation clip 110, movable pressure plate 120, toggle holder (toggle
Support) 130, pull rod 140, toggle mechanism 150, molding motor 160, movement conversion mechanism 170 and mould thickness adjustment mechanism 180.
Fixation clip 110 is fixed on frame Fr.Cover half 11 is mounted in fixation clip 110 and 120 phase of movable pressure plate
To face.
Movable pressure plate 120 is set as, is moved freely on mold opening and closing direction relative to frame Fr.Guide movable pressure plate
120 guide part 101 is laid on frame Fr.Movable pressure plate 120 is mounted in movable pressure plate 120 and 110 phase of fixation clip
To face.
Movable pressure plate 120 is set to retreat relative to fixation clip 110, to carry out mold closing, molding and die sinking.Mold fills
10 are set to be made of cover half 11 and movable pressure plate 120.
Toggle holder 130 is connected with fixation clip 110 across interval, and movement carries freely on mold opening and closing direction
It is placed on frame Fr.In addition, toggle holder 130 can also be set as, moved freely along the guide part being laid on frame Fr.Toggle
The guide part of holder 130 can share the guide part 101 of movable pressure plate 120.
In addition, being set as in the present embodiment：Fixation clip 110 is fixed on frame Fr, and toggle holder 130 is relative to frame
Frame Fr is moved freely on mold opening and closing direction, but can also be set as：Toggle holder 130 is fixed on frame Fr, and fixed
Pressing plate 110 moves freely relative to frame Fr on mold opening and closing direction.
Pull rod 140 is on mold opening and closing direction across interval L connection fixation clips 110 and toggle holder 130.Pull rod 140
It can use multiple.Each pull rod 140 is parallel on mold opening and closing direction and is stretched according to mold clamping force.In at least one pull rod 140
On be provided with detection pull rod 140 deformation pull rod deformation detector 141.Pull rod deformation detector 141 will indicate the detection knot
The signal of fruit is sent to control device 700.The testing result of pull rod deformation detector 141 is used for the detection etc. of mold clamping force.
In addition, in the present embodiment, being detected using pull rod deformation detector 141 as the mold clamping force of detection mold clamping force
Device, but the present invention is not limited thereto.Molding force detector is not limited to strain gage type, can also be piezoelectric type, condenser type, hydraulic pressure
Formula, electromagnetic type etc., and its installation site is also not necessarily limited to pull rod 140.
Toggle mechanism 150 is disposed between movable pressure plate 120 and toggle holder 130, and makes movable pressure plate 120 relative to elbow
Holder 130 is saved to move to mold opening and closing direction.Toggle mechanism 150 is made of crosshead 151, a pair of links group etc..Each connection rod set
With being connected to the 1st connecting rod 152 and the 2nd connecting rod 153 to bend and stretch the limbs freely by pin etc..1st connecting rod 152 by swings such as pins freely
Ground is mounted on movable pressure plate 120, and the 2nd connecting rod 153 is rotatably mounted on toggle holder 130 by pin etc..2nd connecting rod
153 are mounted on via the 3rd connecting rod 154 in crosshead 151.If crosshead 151 is made to retreat relative to toggle holder 130,
1st connecting rod 152 and the 2nd connecting rod 153 are bent and stretched, and movable pressure plate 120 is retreated relative to toggle holder 130.
In addition, the structure of toggle mechanism 150 is not limited to Fig. 1 and structure shown in Fig. 2.For example, in fig. 1 and 2, respectively connecting
The number of nodes of bar group is 5, but number of nodes can also be 4, and an end of the 3rd connecting rod 154 can be attached at the 1st company
Node between bar 152 and the 2nd connecting rod 153.
Molding motor 160 is mounted on toggle holder 130 and toggle mechanism 150 is made to work.Molding motor 160 makes crosshead
151 retreat relative to toggle holder 130, to make the 1st connecting rod 152 and the 2nd connecting rod 153 be bent and stretched, and make movable
Pressing plate 120 is retreated relative to toggle holder 130.Molding motor 160 is joined directly on movement conversion mechanism 170, but
It can be attached on movement conversion mechanism 170 via belt, belt wheel etc..
The rotary motion for molding motor 160 is converted into the linear motion of crosshead 151 by movement conversion mechanism 170.Movement
Switching mechanism 170 includes lead screw shaft 171 and the feed screw nut 172 screwed togather with lead screw shaft 171.Lead screw shaft 171 and feed screw nut 172
Between can configure sphere or rolling element.
Mold closing mechanism 100 carries out mold closing process, molding process and die sinking process etc. under the control of control device 700.
In mold closing process, driving molding motor 160 is so that crosshead 151 advances to mold closing stop bits with setting speed
It sets, to make movable pressure plate 120 advance, movable pressure plate 120 is made to contact cover half 11.For example, using the encoder of molding motor 160
161 etc. detect position or the speed of crosshead 151.The rotation of the detection molding motor 160 of encoder 161, and will indicate the inspection
The signal for surveying result is sent to control device 700.
In molding process, further driving molding motor 160 so that crosshead 151 from mold closing end position further to
Die-closed position advances, to generate mold clamping force.In molding, cavity space 14, note are formed between movable pressure plate 120 and cover half 11
Injection device 300 is to 14 liquid filling body moulding material of cavity space.Molded product is obtained by curing filled moulding material.Type
The quantity of cavity space 14 can be multiple, in such a case, it is possible to obtain multiple molded products simultaneously.
In molding process, driving molding motor 160 is so that crosshead 151 is retreated with setting speed to die sinking stop bits
It sets, to make movable pressure plate 120 retreat, and movable pressure plate 120 is made to be detached with cover half 11.Then, liftout attachment 200 is from can dynamic pressure
Plate 120 ejects molded product.
It is uniformly set using the setting condition in mold closing process and molding process as a series of setting condition.For example,
By mold closing process and molding process in crosshead 151 speed or position (including speed switching position, mold closing end position and
Die-closed position) it is uniformly set as a series of setting condition.It, can be in addition, instead of the speed of crosshead 151 or position etc.
Set speed or the position etc. of movable pressure plate 120.
Also, the driving force of the amplification molding motor 160 of toggle mechanism 150 is simultaneously transmitted to movable pressure plate 120.Its enlargement ratio
Also referred to as toggle multiplying power.The toggle multiplying power is with the 1st connecting rod 152 and 153 angulation θ of the 2nd connecting rod (hereinafter also referred to as " connecting rod
Angle, θ ") variation.Link angle θ is found out by the position of crosshead 151.When link angle θ is 180 °, toggle multiplying power becomes most
Greatly.
The thickness of die device 10 changes due tos replacing the temperature change etc. of die device 10 or die device 10
Shi Jinhang mould thickness adjusts, to obtain defined mold clamping force when molding.In the adjustment of mould thickness, such as adjustment 110 He of fixation clip
Interval L between toggle holder 130 makes toggle mechanism 150 to contact the mould time of contact of cover half 11 in movable pressure plate 120
Link angle θ becomes predetermined angular.
Mold closing mechanism 100 has thick to carry out mould by adjusting the interval L between fixation clip 110 and toggle holder 130
The mould thickness adjustment mechanism 180 of adjustment.Mould thickness adjustment mechanism 180 has the lead screw shaft 181 for the rear end for being formed in pull rod 140, quilt
The feed screw nut 182 and the feed screw nut screwed togather with lead screw shaft 181 182 is made to rotate that toggle holder 130 is rotatably freely kept
Mould thickness adjusts motor 183.
Lead screw shaft 181 and feed screw nut 182 are set on each pull rod 140.The rotation that mould thickness adjusts motor 183 can be through
Multiple feed screw nuts 182 are transmitted to by the rotation transfer part 185 being made of belt, belt wheel etc..Enable multiple feed screw nuts 182
Synchronous rotary.In addition, rotating the transmission path of transfer part 185 by change, the 182 each spinning of multiple feed screw nuts can be made.
In addition, rotation transfer part 185 can be made of gear etc. to replace belt, belt wheel etc..In this case, each
The periphery of feed screw nut 182 forms driven gear, the installation driving gear on the output shaft that mould thickness adjusts motor 183, and in elbow
The central portion of section holder 130 rotatably freely keeps the intermediate gear engaged with multiple driven gears and driving gear.
The action of mould thickness adjustment mechanism 180 is controlled by control device 700.Control device 700 drives mould thickness to adjust motor 183
With rotating threaded shaft nut 182, pressed relative to fixed so as to adjust the toggle holder 130 of feed screw nut 182 is rotatably freely kept
The position of plate 110, and adjust the interval L between fixation clip 110 and toggle holder 130.
In addition, in the present embodiment, feed screw nut 182 is rotatably freely kept relative to toggle holder 130, silk is formed
The pull rod 140 of thick stick axis 181 is fixed on fixation clip 110, however, the present invention is not limited thereto.
For example, feed screw nut 182 can rotatably freely be kept relative to fixation clip 110, and pull rod 140 can be fixed
On toggle holder 130.In this case, interval L can be adjusted by rotating threaded shaft nut 182.
Moreover, feed screw nut 182 can be fixed on toggle holder 130, and pull rod 140 can be relative to fixation clip
110 rotatably freely keep.In this case, interval L can be adjusted by rotating rod 140.
Moreover, feed screw nut 182 can be fixed on fixation clip 110, and pull rod 140 can be relative to toggle holder
130 rotatably freely keep.In this case, interval L can be adjusted by rotating rod 140.
The 184 assay intervals L of encoder of motor 183 is adjusted using mould thickness.Encoder 184 detects mould thickness and adjusts motor 183
Rotation amount or direction of rotation, and will indicate that the signal of the testing result is sent to control device 700.The detection of encoder 184
As a result it is used to monitor or control position or the interval L of toggle holder 130.
Mould thickness adjustment mechanism 180 makes one in the lead screw shaft screwed togather each other 181 and feed screw nut 182 to rotate, to adjust
Whole interval L.Multiple mould thickness adjustment mechanisms 180 can be used, multiple mould thickness can also be used to adjust motor 183.
In addition, in order to adjust interval L, the mould thickness adjustment mechanism 180 of present embodiment has the leading screw for being formed in pull rod 140
Axis 181 and the feed screw nut 182 screwed togather with lead screw shaft 181, but the present invention is not limited thereto.
For example, mould thickness adjustment mechanism 180 can be with the pull rod thermoregulator of the temperature of adjusting yoke 140.Pull rod temperature
Degree adjuster is mounted on each pull rod 140 and combines the temperature for adjusting multiple pull rods 140.The temperature of pull rod 140 is higher,
More become larger every L.The temperature of multiple pull rods 140 also can be separately adjustable.
Pull rod thermoregulator includes the heater such as electric heater, by heating come the temperature of adjusting yoke 140.Pull rod
Thermoregulator may include the coolers such as water-cooling jacket, pass through the cooling temperature come adjusting yoke 140.Pull rod thermoregulator
May include both heater and cooler.
In addition, the mold closing mechanism 100 of present embodiment be mold opening and closing direction be horizontal direction it is horizontal but it is also possible to be
It is the vertical of upper and lower directions that mold, which is opened and closed direction,.Vertical mold closing mechanism includes lower platen, top board, toggle holder, pull rod, toggle
Mechanism and molding motor etc..Any of lower platen and top board are used as fixation clip, another is used as movable pressure plate.It will
Lower die is mounted on lower platen, and upper mold is mounted on top board.Die device is constituted by lower die and upper mold.Lower die can be via
Turntable is mounted on lower platen.Toggle holder is disposed in the lower section of lower platen.Toggle mechanism is disposed in toggle holder and lower platen
Between, carry out the lifting of movable pressure plate.Molding motor makes toggle mechanism work.Pull rod vertically extends, and runs through lower platen,
And link top board and toggle holder.When mold closing mechanism is vertical, the quantity of pull rod is typically three.In addition, the number of pull rod
Amount is not particularly limited.
In addition, there is the mold closing mechanism 100 of present embodiment molding motor 160 to be used as driving source, but there can also be liquid
Cylinder pressure come replace molding motor 160.In addition, mold closing mechanism 100 there can be die opening and closing line motor, and used with molding
Electromagnet.
(liftout attachment)
In the explanation of liftout attachment 200, identically as the explanation of mold closing mechanism 100, by movable pressure plate 120 in mold closing
Moving direction (right direction in Fig. 1 and Fig. 2) be set as front, by movable pressure plate 120 in die sinking moving direction (Fig. 1 and
Left direction in Fig. 2) rear is set as to illustrate.
Liftout attachment 200 ejects molded product from die device 10.Liftout attachment 200 has ejection motor 210, movement conversion
Mechanism 220 and knock-pin 230 etc..
Motor 210 is ejected to be mounted on movable pressure plate 120.Ejection motor 210 directly links with movement conversion mechanism 220,
But it can also link via belt, belt wheel etc. and movement conversion mechanism 220.
The rotary motion for ejecting motor 210 is converted into the linear motion of knock-pin 230 by movement conversion mechanism 220.Movement
Switching mechanism 220 includes lead screw shaft and the feed screw nut screwed togather with lead screw shaft.Place can be matched between lead screw shaft and feed screw nut
Body or rolling element.
Knock-pin 230 is set as free to advance or retreat in the through hole of movable pressure plate 120.The front end of knock-pin 230 and advance and retreat
The movable member 15 for being disposed in the inside of movable pressure plate 120 freely contacts.It the front end of knock-pin 230 can be with movable member
15 connections, but can not also link.
Liftout attachment 200 carries out ejection process under the control of control device 700.
In ejecting process, driving ejection motor 210 is so that knock-pin 230 is advanced with setting speed, to make movable part
Part 15 advances and ejects molded product.Then, driving ejection electro-motor 210 is so that knock-pin 230 is retreated with the speed of setting, from
And movable member 15 is made to back to initial position.For example, detecting knock-pin 230 using the encoder 211 of ejection motor 210
Position or speed.The rotation of the detection ejection motor 210 of encoder 211, and will indicate that the signal of the testing result is sent to control
Device 700.
(injection device)
In the explanation of injection device 300, it is different from the explanation of mold closing mechanism 100 or the explanation of liftout attachment 200, by silk
Moving direction (left direction in Fig. 1 and Fig. 2) of the thick stick 330 in filling is set as front, by mobile side of the leading screw 330 in metering
It is set as rear to (right direction in Fig. 1 and Fig. 2) to illustrate.
Injection device 300 is disposed relative on frame Fr glide bases 301 free to advance or retreat, and is set as relative to mold
Device 10 is free to advance or retreat.Injection device 300 is contacted with die device 10, and the cavity space 14 into die device 10 is filled into
Proximate matter material.Injection device 300 includes such as cylinder body 310, nozzle 320, leading screw 330, measure motor 340, injection motor 350 and pressure
Force detector 360 etc..
Cylinder body 310 heats the moulding material internally supplied from supply mouth 311.Supply mouth 311 is formed in cylinder body
310 rear portion.The periphery at the rear portion of cylinder body 310 is provided with the coolers such as water cooling cylinder 312.It is located further forward than cooler 312
The position of side, the heaters such as band-like electric heater 313 and temperature detector 314 are provided in the periphery of cylinder body 310.
Cylinder body 310 is divided into multiple regions in the axial direction (left and right directions in Fig. 1 and Fig. 2) of cylinder body 310.In each region
Having heaters 313 and temperature detector 314 are set.In each region, control device 700 controls heater 313, so that temperature is examined
Surveying the detection temperature of device 314 becomes set temperature.
Nozzle 320 is arranged in the front end of cylinder body 310, and is pressed relative to die device 10.In the periphery of nozzle 320
Heater 313 and temperature detector 314 are set.Control device 700 control heater 313 so that the detection temperature of nozzle 320 at
For set temperature.
Leading screw 330 is rotated freely and is movably disposed in cylinder body 310.If making leading screw 330 rotate, moulding material
It is delivered to front along the spiral groove of leading screw 330.Moulding material is while being delivered to front by the heat from cylinder body 310
Gradually melting.As liquid condition shaping material is transported to the front of leading screw 330 and is accumulated in the front of cylinder body 310, after leading screw 330
It moves back.If leading screw 330 is then made to advance, being accumulated in the liquid condition shaping material in 330 front of leading screw can inject from nozzle 320, and fill out
It is charged in die device 10.
Non-return ring 331 is movably installed in the front of leading screw 330 and is used as check-valves, the check-valves is by leading screw
330 when promoting forwards, prevents moulding material from the front of leading screw 330 towards rear adverse current.
When making leading screw 330 advance, non-return ring 331 is pushed to rear because of the pressure of the moulding material in 330 front of leading screw,
And the occlusion locations of the flow path retreated to closing moulding material (with reference to figure 2).Prevent from being accumulated in as a result, 330 front of leading screw at
Proximate matter material rearward adverse current.
On the other hand, when making leading screw 330 rotate, non-return ring 331 along the spiral groove of leading screw 330 because being delivered to front
Moulding material pressure and be pushed to front, and advance to the release position of the flow path of open moulding material (with reference to figure 1).By
This, moulding material is transported to the front of leading screw 330.
Non-return ring 331 can be the corotation type rotated together with leading screw 330 and the non-corotation that is not rotated together with leading screw 330
Any of type.
Non-return ring 331 is set to retreat between release position and occlusion locations in addition, injection device 300 can have
Driving source.
Measure motor 340 makes leading screw 330 rotate.The driving source that leading screw 330 rotates is set to be not limited to measure motor 340, such as
It can also be hydraulic pump etc..
Injection motor 350 makes leading screw 330 retreat.Setting will inject motor between injection motor 350 and leading screw 330
350 rotary motion is converted into the movement conversion mechanism etc. of the linear motion of leading screw 330.Movement conversion mechanism has such as leading screw
Axis and the feed screw nut screwed togather with lead screw shaft.Sphere or rolling element can be configured between lead screw shaft and feed screw nut.Make leading screw 330
The driving source retreated is not limited to injection motor 350, such as can also be hydraulic cylinder etc..
The pressure transmitted between the detection of pressure detector 360 injection motor 350 and leading screw 330.Pressure detector 360 is arranged
On pressure transmission path between injection motor 350 and leading screw 330, and detect the pressure for acting on pressure detector 360.
Pressure detector 360 will indicate that the signal of the testing result is sent to control device 700.Pressure detector 360
Testing result is used to control or monitor the pressure that leading screw 330 receives from moulding material, to the back pressure of leading screw 330 and by leading screw 330
Act on the pressure etc. of moulding material.
Injection device 300 is filled process, pressurize process and measurement process etc. under the control of control device 700.
In filling work procedure, driving injection motor 350 is so that leading screw 330 is advanced with setting speed, and to die device 10
Interior cavity space 14 fills the liquid condition shaping material for being accumulated in 330 front of leading screw.Such as the encoder using injection motor 350
The position of 351 detection leading screws 330 or speed.The rotation of the detection injection motor 350 of encoder 351, and will indicate the testing result
Signal be sent to control device 700.If the detected value of pressure detector 360 reaches specified value, carry out from filling work procedure to
The switching (so-called V/P switchings) of pressurize process.In addition, V/P switchings can also reach setting position in the position of leading screw 330
Shi Jinhang.The position for carrying out V/P switchings is also referred to as V/P switching positions.The setting speed of leading screw 330 can be according to leading screw 330
Position or time etc. and change.
In addition, in filling work procedure, can in the position make when the detected value of pressure detector 360 reaches specified value
Leading screw 330 carries out V/P switchings after temporarily ceasing.Before V/P switchings are tight, after dead slow ahead or dead slow speed that leading screw 330 can be carried out
It moves back to replace the stopping of leading screw 330.
In pressurize process, driving injection motor 350 with propulsion lead screw 330 forwards, by the front end of leading screw 330 at
The pressure (hereinafter also referred to " keeping pressure ") of proximate matter material is maintained at setting pressure, and will remain in the forming material in cylinder body 310
Material pushes die device 10 to.Insufficient moulding material can be supplemented by the cooling meat in die device 10.For example, using pressure
The detection of force detector 360 keeps pressure.Pressure detector 360 will indicate that the signal of the testing result is sent to control device 700.
Keep the setting value of pressure that can be changed according to elapsed time etc. from pressurize process.
In pressurize process, the moulding material of the cavity space 14 in die device 10 gradually cools down, in pressurize process knot
Shu Shi, the moulding material that the entrance of cavity space 14 is cured are closed.The state is referred to as gate seal, prevents empty from cavity
Between 14 moulding material adverse current.After pressurize process, process is begun to cool.In cooling process, it carries out in cavity space 14
Moulding material solidification.In order to shorten molding cycle, measurement process can be carried out in cooling process.
In measurement process, driving measure motor 340 is so that leading screw 330 is rotated with setting speed, and by moulding material edge
The spiral groove for leading screw 330 is fed forward.With as it does so, moulding material gradually melts.As liquid molding material is transported to
The front of leading screw 330 and the front for being accumulated in cylinder body 310, leading screw 330 retreat.For example, using the encoder of measure motor 340
341 detect the rotating speed of leading screw 330.Encoder 341 will indicate that the signal of the testing result is sent to control device 700.
In measurement process, in order to limit the rapidly retrogressing of leading screw 330, injection motor 350 can be driven with to leading screw 330
Apply the back pressure of setting.For example, using the detection of pressure detector 360 to the back pressure of leading screw 330.Pressure detector 360 will indicate
The signal of the testing result is sent to control device 700.If leading screw 330 is retreated to metering end position, and before leading screw 330
The moulding material of side's accumulation specified amount, then terminate measurement process.
In addition, the injection device 300 of present embodiment is coaxial screw but it is also possible to be preformed formula.Preformed formula is injected
In device, the moulding material melted in plasticizing cylinder is supplied to injection cylinder, and is injection moulded from injection cylinder into die device
Material.It rotates freely or rotates freely in plasticizing cylinder and leading screw is movably arranged, movably match in injection cylinder
If plunger.
(mobile device)
In the explanation of mobile device 400, identically as the explanation of injection device 300, by shifting of the leading screw 330 in filling
Dynamic direction (left direction in Fig. 1 and Fig. 2) is set as front, by the moving direction (right side in Fig. 1 and Fig. 2 of the leading screw 330 in metering
Direction) rear is set as to illustrate.
Mobile device 400 makes injection device 300 retreat relative to die device 10.Moreover, mobile device 400 will spray
Mouth 320 is pressed into die device 10 to generate nozzle contact.Mobile device 400 includes hydraulic pump 410, as driving source
Motor 420 and hydraulic cylinder 430 etc. as hydraulic actuator.
Hydraulic pump 410 has the 1st port 411 and the 2nd port 412.Hydraulic pump 410 is the pump for capableing of bidirectional rotation, is passed through
The direction of rotation of switching motor 420, simultaneously from either one sucking working solution (such as oil) in the 1st port 411 and the 2nd port 412
It is discharged from another party and generates hydraulic pressure.In addition, hydraulic pump 410 can be after the sucking working solution of tank 413 from the 1st port 411 and the 2nd
Either one discharge working solution in port 412.
Motor 420 makes hydraulic pump 410 work.Motor 420 is revolved using corresponding with the control signal of self-control device 700 is carried out
Turn direction and rotation torque to drive hydraulic pump 410.Motor 420 can be electro-motor, can also be electric servomotor.
Hydraulic cylinder 430 has main body cylinder block 431, piston 432 and piston rod 433.Main body cylinder block 431 is fixed on injection device
On 300.Piston 432 by the inside division of main body cylinder block 431 at as Room the 1st cup 435 and as the rear chamber 436 of Room the 2nd.
Piston rod 433 is fixed on fixation clip 110.Piston rod 433 runs through cup 435, therefore the sectional area of cup 435 is less than rear chamber
436 sectional area.
The cup 435 of hydraulic cylinder 430 is connect via the 1st flow path 401 with the 1st port 411 of hydraulic pump 410.From the 1st port
The working solution of 411 discharges is supplied to cup 435 via the 1st flow path 401, to which injection device 300 is pushed to front.Injection dress
300 advances are set, nozzle 320 is pressed against cover half 11.Pressure of the cup 435 as the working solution by being supplied from hydraulic pump 410
And the balancing gate pit for making the nozzle contact of nozzle 320 generate functions.
On the other hand, the rear chamber 436 of hydraulic cylinder 430 is connect via the 2nd flow path 402 with the 2nd port 412 of hydraulic pump 410.
The working solution being discharged from the 2nd port 412 is supplied to the rear chamber 436 of hydraulic cylinder 430 via the 2nd flow path 402, to injection device
300 are pushed to rear.Injection device 300 retreats, and nozzle 320 is detached with cover half 11.
When pressure in the 1st flow path 401 is more than setting value, the 1st pressure reducing valve 441 is opened, and make in the 1st flow path 401
Extra working solution returns to tank 413, to which the pressure in the 1st flow path 401 is maintained at setting value or less.
When pressure in the 2nd flow path 402 is more than setting value, the 2nd pressure reducing valve 442 is opened, and make in the 2nd flow path 402
Extra working solution returns to tank 413, to which the pressure in the 2nd flow path 402 is maintained at setting value or less.
Overflow valve 443 is the working solution generated due to adjusting the difference of the sectional area because of the sectional area of cup 435 and rear chamber 436
The valve of the surplus and deficiency of internal circulating load as depicted in figs. 1 and 2, such as is made of 3-position 4-way guiding valve.
When pressure in the 1st flow path 401 is less than the pressure in tank 413, the 1st check valve 451 is opened, from tank 413 to the 1st
Flow path 401 supplies working solution.
When pressure in the 2nd flow path 402 is less than the pressure in tank 413, the 2nd check valve 452 is opened, from tank 413 to the 2nd
Flow path 402 supplies working solution.
Electromagnetic switching valve 453 is the work between the cup 435 and the 1st port 411 of hydraulic pump 410 for controlling hydraulic cylinder 430
Make the control valve of the flowing of liquid.Electromagnetic switching valve 453, such as be arranged in the midway of the 1st flow path 401, it controls in the 1st flow path 401
Working solution flowing.
As depicted in figs. 1 and 2, electromagnetic switching valve 453 is for example made of bi-bit bi-pass guiding valve.It is located at the 1st position in guiding valve
In the case of (position in Fig. 1 and the left side in Fig. 2), allow the two-way flow between cup 435 and the 1st port 411.Another party
Face, in the case where guiding valve is located at the 2nd position (position on the right side in Fig. 1 and Fig. 2), from cup 435 to the 1st port 411
Flowing is restricted.In this case, unrestricted from the 1st port 411 to the flowing of cup 435, but can also make its by
To limitation.
1st pressure detector 455 detects the hydraulic pressure of cup 435.Nozzle contact is generated by the hydraulic pressure of cup 435,
Therefore the 1st pressure detector 455 can be used to detect nozzle contact.1st pressure detector 455, such as be arranged in the 1st stream
The midway on road 401, and be arranged in the position of 435 side of cup on the basis of electromagnetic switching valve 453.With the shape of electromagnetic switching valve 453
State can independently detect nozzle contact.
2nd pressure detector 456 is arranged in the midway of the 1st flow path 401, and setting exists on the basis of electromagnetic switching valve 453
The position of 1st port, 411 side.2nd pressure detector 456 detects the hydraulic pressure between electromagnetic switching valve 453 and the 1st port 411.
In the state that electromagnetic switching valve 453 allows the two-way flow between the 1st port 411 and cup 435, the 1st port 411 and electromagnetism are cut
The hydraulic pressure changed between the hydraulic pressure between valve 453 and electromagnetic switching valve 453 and cup 435 is identical.Therefore, in this state, can
Nozzle contact is detected using the 2nd pressure detector 456.
In addition, in the present embodiment, nozzle is detected using the pressure detector being arranged in the midway of the 1st flow path 401
Contact, but can also be such as detecting nozzle contact using the load cell for being set to nozzle 320.Detect
The pressure detector of nozzle contact can be arranged in any of mobile device 400, injection device 300.
In addition, in the present embodiment, hydraulic cylinder 430 is used as mobile device 400, but the present invention is not limited thereto.
(control device)
As shown in Fig. 1~Fig. 2, control device 700 has CPU (Central Processing Unit, central processing unit)
701, the storage mediums such as memory 702, input interface 703 and output interface 704.Control device 700 is by making CPU701 execute
The program in storage medium 702 is stored in carry out various controls.Moreover, control device 700 by input interface 703 receive come
From external signal, and by output interface 704 signal is sent to outside.
Control device 700 is connect with operating device 750 or display device 760.Operating device 750 receives the input behaviour of user
Make, and signal corresponding with input operation is output to control device 700.Control of the display device 760 in control device 700
Under, show operation screen corresponding with the input operation in operating device 750.Operation screen is used for the setting of injection (mo(u)lding) machine
Deng.Prepare multiple operation screens to switch over display or overlapping display.The operation that user is shown in observation by display device 760
Operating device 750, the setting (input for including setting value) etc. to carry out injection (mo(u)lding) machine are operated while picture.Operation dress
750 and display device 760 are set, such as can be made of touch panel, and integration.In addition, in the present embodiment, operation dress
Set 750 and display device 760 be set as integration, but can also be separately provided.Moreover, operating device 750 can be arranged it is multiple.
(compression forming)
The knock-pin 230 of liftout attachment 200 be used for will be filled in die device 10 cavity space 14 moulding material into
Row compression and will be by the molding molded product (hereinafter also referred to as " the compressed molded product being molded with ") of the compression from mold
Both ejections of device 10.Being compressed in before moulding material is fully cured for moulding material carries out.
Knock-pin 230 is will be free to advance or retreat in movable pressure plate 120 in the longitudinal direction perforative through hole.Knock-pin 230
Front end contacted with the movable member 15 being movably disposed in inside dynamic model 12.
As shown in Fig. 3~Fig. 6, movable member 15 have the plate vertical relative to front-rear direction ejection platen 21, from
The rodlike compression core pins 22 and the rodlike ejection extended forwards from ejection platen 21 that ejection platen 21 extends forwards
Pin 23.
By configuring in front of the knock-pin 230 of the position more more rearward than ejection platen 21 pushes ejection platen 21 to.And
And push rear to by platen 21 is ejected in the spring 16 than ejection platen 21 position closer to the front by configuring.
Compression core pins 22 extend through dynamic model 12 forwards from ejection platen 21.Compress core pins 22 front end face at
For a part for the wall surface of cavity space 14.Compression core pins 22 are retreated together with ejection platen 21, and carry out moulding material 2
Compression, the decompression of the compressed molded product being molded with and the ejection of the molded product through decompression.
Knock pin 23 extends through dynamic model 12 forwards from ejection platen 21.By flow through runner 18 shown in Fig. 3 at
Proximate matter material 2 encases the front end of knock pin 23.The moulding material 2 encased is closely sealed with the front end of knock pin 23 by curing.Top
Go out pin 23 for eject in runner 18 cured moulding material 2.
The front end of knock-pin 230 does not link with movable member 15, but can link with movable member 15.In addition, ejection
It, can be without aftermentioned spring 16 when the front end of bar 230 links with movable member 15.
If driving ejection motor 210 is so that knock-pin 230 advances, movable member 15 advances, to carry out moulding material 2
Compress, the ejection of the compressed molded product being molded with.
On the other hand, if driving knock-pin 230 so that knock-pin 230 retreat, can by the elastic restoring force of spring 16
Dynamic component 15 is ejected while bar 230 pushes and retreats, to carry out the decompression of molded product.Molded product through decompression passes through ejection
The preceding and then driven mould 12 of bar 230 is ejected.
Control device 700 passes through by coming in control the compression of moulding material 2 before controlling knock-pin 230 and controls ejection
Bar 230 retreats to control the decompression of molded product, by the top for coming in control the molded product through decompression before control knock-pin 230
Go out.
Hereinafter, being illustrated to the action of knock-pin 230 with reference to 3~Fig. 6 of figure.Fig. 3 is the partial enlarged view of Fig. 2, and table
Show knock-pin compression position of readiness state figure.Fig. 4 is to indicate that knock-pin is advanced to from compression position of readiness shown in Fig. 3
The figure of the state of compression position.Fig. 5 is to indicate that knock-pin is retreated from compression position shown in Fig. 4 to the state of compression position of readiness
Figure.Fig. 6 is to indicate that knock-pin advances to the figure of the state of ejection position from compression position of readiness shown in fig. 5.
Control device 700 is starting filling work procedure to during terminating pressurize process, makes knock-pin 230 from pressure shown in Fig. 3
Contracting position of readiness advances to compression position shown in Fig. 4.Movable member 15 is set to advance as a result, compression is filled in cavity space
14 moulding material 2.In addition, in figure 3, knock-pin 230 is not contacted with movable member 15 when compressing position of readiness, but
It can be contacted with movable member 15.In the case of the latter, knock-pin 230 can link with movable member 15.
The advance of knock-pin 230 can start in the midway of filling work procedure, can also be in the flow front of moulding material 2
Start before reaching the terminal of flow path.Moreover, the advance of knock-pin 230 substantially can simultaneously terminate with filling work procedure,
The time of the terminal of flow path can be reached with the flow front of moulding material 2 substantially simultaneously.It is preferred that before knock-pin 230 starts
Into time and moulding material 2 flow front reach flow path terminal time substantially simultaneously.
As long as in addition, the advance of knock-pin 230 starts after starting filling work procedure, before terminating pressurize process, also may be used
To start after starting pressurize process.Similarly, as long as the advance of knock-pin 230 terminates after starting filling work procedure, terminates to protect
Press process before carry out, can the flow front of moulding material 2 reach flow path terminal before carry out, can also at
It is carried out after the terminal of the flow front arrival flow path of proximate matter material 2.
Moreover, inside die device 10, moulding material 2 is by being formed in the sprue 17 of cover half 11, in sprue 17
Terminal part bifurcated runner 18 and be set to runner 18 terminal part cast gate 19 reach cavity space 14.
In order to detect the flowing of the moulding material 2 inside die device 10, runner is internally provided in die device 10
The pressure detectors such as pressure detector 31, cavity space pressure detector 32.Flowpath pressure detector 31 is for example arranged in runner
18 terminal part, the pressure that detection passes through the moulding material 2 of runner 18.Moreover, cavity space pressure detector 32 is arranged in shape
It is molded the back side of the core pins of the wall surface of cavity space 14, detection is filled in the pressure of the moulding material 2 of cavity space 14.In Fig. 3
In~Fig. 6, flowpath pressure detector 31, cavity space pressure detector 32 are arranged in cover half 11, but can also be arranged dynamic
In mould 12.
If moulding material 2 reaches the installation position for the pressure detector being arranged inside die device 10, moulding material 2
Pressure act on pressure detector, therefore the detected value of pressure detector rises.It can be from the detected value of pressure detector
Rise detection moulding material 2 reaches specified position.Such as the detected value of pressure detector be more than setting value when, be set as forming material
Material 2 reaches the installation position of pressure detector.Or the time diffusion value of the detected value of pressure detector has been more than setting value
When, it is set as the installation position that moulding material 2 reaches pressure detector.
Control device 700 starts knock-pin according to the testing result for the pressure detector being arranged inside die device 10
230 advance.It can correspondingly be adjusted with the filling situation of the moulding material 2 in die device 10 before starting knock-pin 230
Into the time, it is capable of the quality of stable molding product.
For example, control device 700 detects forming material according to the testing result of the pressure detectors such as flowpath pressure detector 31
Material 2 reaches specified position, when elapsed time has reached the preset compressed action time started from the arrival time,
Start the advance of knock-pin 230.The variation that moulding material 2 reaches the time of specified position can be absorbed, peak pressure can be absorbed
It changes.
Moreover, control device 700 detects forming material according to the testing result of the pressure detectors such as flowpath pressure detector 31
The flow front position of material 2, and can start to eject when the test position reaches preset compressed action starting position
The advance of bar 230.The detection of the flow front position of moulding material 2, such as predetermined bits can be reached by measuring moulding material 2
It is carried out by the time at the time of setting.Longer by the time, the flow front position of moulding material 2 is closer to flow path
Terminal.
In addition, inspection of the control device 700 of present embodiment according to the pressure detector being arranged inside die device 10
The advance that result starts knock-pin 230 is surveyed, but the present invention is not limited thereto.
For example, control device 700 can be opened according to the testing result for the temperature detector being arranged inside die device 10
The advance of beginning knock-pin 230.Moulding material 2 reach temperature detector installation position or its near when, the temperature of moulding material 2
Than 10 higher of die device, therefore the measured value of temperature detector rises.It can be examined from the rising of the measured value of temperature detector
It surveys moulding material 2 and reaches specified position.Such as the measured value of temperature detector be more than setting value when, be set as moulding material 2 and arrive
Reached temperature detector installation position or its near.Or the time diffusion value of the measured value of temperature detector is more than setting value
When, be set as moulding material 2 reach temperature detector installation position or its near.
Moreover, control device 700 can also act on the compression core pins pressure of the pressure of compression core pins 22 according to detection
The testing result of force detector 33 starts the advance of knock-pin 230.If this is because moulding material 2 reach cavity space 14,
Compression core pins 22 are pressed.If in addition, the feelings that knock-pin 230 is contacted with movable member 15 when knock-pin 230 starts to advance
Under condition, moulding material 2 reaches cavity space 14, then is not only movable member 15, knock-pin 230 is also pressed.Thus, it is also possible to
The knock-pin pressure detector 34 of pressure etc. of knock-pin 230 is acted on using detection.
Control device 700 can retreat after so that knock-pin 230 is advanced to compression position shown in Fig. 4, from compression position
Before, it is made to stop the stipulated time in compression position.Moulding material 2 is fully pressed in the wall surface of cavity space 14, and transferability obtains
It improves.
Control device 700 makes knock-pin 230 be retreated from compression position shown in Fig. 4 to compression position of readiness shown in fig. 5.
As a result, retreat movable member 15, the compressed molded product being molded with depressurizes in cavity space 14.
In addition, the position of the knock-pin 230 at the end of decompression can be the position different from compression position of readiness shown in fig. 5
It sets, can be than compression position of readiness position closer to the front, can also be the position more more rearward than compression position of readiness.
Control device 700 controls 1 decompression and 2 decompressions：It is described 1 time decompression moulding material 2 compression it
Afterwards, before the ejection of the compressed molded product being molded with, the pressure of molded product is reduced with prescribed model；2 decompressions are logical
Crossing at 1 time retreats after decompression knock-pin 230 further decreases the pressure of molded product to specified position.In being depressurized at 1 time,
Inhibit the shape of the compressed molded product being molded with, size it is bad, while compressed be molded with is made with prescribed model
The pressure of molded product slowly reduces.
Fig. 7 is the pressure reducing mode of the compressed molded product being molded with more according to the embodiment and the warp according to comparative example
The figure of the pressure reducing mode of molded product made of compression forming.Fig. 7 (a) is to indicate to be molded with according to the 1st the compressed of embodiment
Molded product pressure reducing mode figure.Fig. 7 (b) is the decompression mould according to the compressed molded product being molded with of the 2nd embodiment
The figure of formula.Fig. 7 (c) is the figure according to the pressure reducing mode of the compressed molded product being molded with of the 3rd embodiment.Fig. 7 (d) is root
According to the figure of the pressure reducing mode of the compressed molded product being molded with of comparative example.
In the comparative example of Fig. 7 (d), after compression forming material 2, knock-pin 230 is made to retreat to specified position, made through pressure
Shortening the pressure of molded product made of type into discontinuously reduces, until being reduced to zero.Therefore, it is generated in molded product after decompression
Big residual stress, and because the variation of the surface shape of residual stress generation is big, the surface accuracy of molded product is poor.
In contrast, in 1 decompression of the 1st embodiment of Fig. 7 (a), make the pressure of the compressed molded product being molded with
The process of power at any time continuously reduces.In 1 decompression of the 2nd embodiment of Fig. 7 (b), make the compressed molding being molded with
The pressure of product is maintained to a certain degree after continuously reducing.In 1 decompression of the 3rd embodiment of Fig. 7 (c), make compressed molding
Made of molded product pressure stage property reduce.In the embodiment of 1st embodiment~the 3rd, in being depressurized at 2 times, make compressed molding
Made of 1 decompression of pressure ratio of molded product rapidly reduce.In being depressurized at 2 times, make the pressure of the compressed molded product being molded with
Power is reduced to essentially a zero.
According to the embodiment of the 1st embodiment~the 3rd, after compression forming material 2, the compressed molded product being molded with
1 decompression and 2 decompressions are carried out before ejection, so as to inhibit the shape of the compressed molded product being molded with, size
It is bad, while reducing the pressure of the compressed molded product being molded with and reducing the residual stress of molded product.As a result, it is possible to press down
The variation because of the surface shape that residual stress generates is made, therefore the surface accuracy of molded product can be improved.The result is in molded product
In have thickness thin part and thick part (such as lens etc.) in the case of especially significantly.This is because compression forming material 2
Stress be easy to concentrate on the thin part of thickness.
In being depressurized at 1 time, the pressure of the compressed molded product being molded with can be detected, can not also be detected.The latter's
In the case of, the relationship between the position of knock-pin 230 and the pressure of the compressed molded product being molded with is found out by experiment etc.,
It is stored in advance in storage medium 702.According to the data stored, the position for knock-pin 230 of controlling by time variable, so as to rule
Mould-fixed reduces the pressure of the compressed molded product being molded with.
In being depressurized at 1 time, control device 700 can detect the pressure of the compressed molded product being molded with, and according to this
Testing result controls the retrogressing of knock-pin 230.Such as detect compressed be molded with using cavity space pressure detector 32
The pressure of molded product.It, can be good with prescribed model precision by detecting the actual pressure of the compressed molded product being molded with
Ground reduces actual pressure.
For example, in being depressurized at 1 time, control device 700 detects the pressure of the compressed molded product being molded with, control ejection
The retrogressing of bar 230 is so that the deviation between the detected value and desired value becomes zero.In the control using such as PI (proportional integration,
Proportional Integral) operation, PID (proportional integral differential, Proportional Integral Derivative)
Operation etc..
In addition, in being depressurized at 1 time, the compressed molded product being molded with can be also detected by flowpath pressure detector 31
Pressure.This is because cavity space 14 is connected with runner 18.
Moreover, in being depressurized at 1 time, it also can be by compressing core pins pressure detector 33, knock-pin pressure detector 34
Detect the pressure of the compressed molded product being molded with.This is because the pressure of the compressed molded product being molded with acts on pressure
Miniature core pin 22, knock-pin 230.
On the other hand, in being depressurized at 2 times, control device 700 can be with the pressure of the compressed molded product being molded with
Detected value independently controls the retrogressing of knock-pin 230.Such as in being depressurized at 2 times, control device 700 makes knock-pin 230 with advance
The speed of setting is retreated to preset position.The top that the astern speed of the knock-pin 230 of 2 decompressions can be depressurized than 1 time
The astern speed of rod 230 is big.
Control device 700 can terminate pressurize process advance pass through molded product made of compression forming decompression beginning
That is the beginning of the retrogressing of knock-pin 230.Before terminating pressurize process, since the compressed molded product being molded with is not completely solid
Change, therefore be easily reduced the pressure of the compressed molded product being molded with, is easily reduced the residual stress of molded product.
Control device 700 before terminating pressurize process, can carry out the knot of the decompression of the compressed molded product being molded with
The end of the retrogressing of beam, that is, knock-pin 230.Before terminating pressurize process, since the compressed molded product being molded with is not completely solid
Change, therefore be easily reduced the pressure of the compressed molded product being molded with, is easily reduced the residual stress of molded product.
In addition, the compressed molded product being molded with is fully cured at the end of cooling process.Therefore, control device 700
As long as the retrogressing for starting the retrogressing of knock-pin 230 before cooling process terminates, terminating knock-pin 230.
(deformation and improvement)
Embodiment of injection (mo(u)lding) machine etc. is illustrated above, but present invention is not limited to the embodiments described above
Deng various deformations and improvements can be carried out in the range of the purport of claims of the present invention.
For example, the movable member 15 of the above embodiment for (1) compression be filled in cavity space 14 moulding material 2,
(2) ejection both cured molded products in cavity space 14, but (1) compression rather than (2) ejection can be only used for.This
When, ejection component and movable member 15 are separately disposed in die device 10.
When ejection component is respectively set with movable member 15, liftout attachment 200 can be used as individually driving ejection
Functioned with the driving device of component and movable member 15, can also be used as only driving ejection component driving device and
It functions.In the case of the latter, as the driving device of driving movable member 15, in addition it is arranged such as hydraulic cylinder.
The movable member 15 of the above embodiment is disposed in 120 side of movable pressure plate, but can be disposed in 11 side of cover half.Separately
Outside, movable member 15 can also be separately equipped in the both sides of movable pressure plate 120 and cover half 11.It is corresponding to the configuration of movable member 15
Ground selects the configuration of liftout attachment 200.
Claims (5)
1. a kind of injection (mo(u)lding) machine, has：
Control device, the control device are movable to the moulding material for compressing the cavity space for being filled in die device
The advance and retreat of component are controlled,
The control device controls the compression of the moulding material later to 1 by controlling before the movable member
Secondary decompression and 2 decompressions are controlled：1 decompression passes through the molding molded product of the compression with prescribed model reduction
Pressure；2 decompressions, by making the movable member retreat to specified position come further after being depressurized at described 1 time
Reduce the pressure of the molded product.
2. injection (mo(u)lding) machine according to claim 1, wherein
The control device detects the pressure of the molded product in being depressurized at described 1 time, and based on the testing result make it is described can
Dynamic component retreats.
3. injection (mo(u)lding) machine according to claim 1 or 2, wherein
The control device starts the decompression of the molded product before pressurize process terminates.
4. injection (mo(u)lding) machine described in any one of claim 1 to 3, wherein
The control device completes the decompression of the molded product before pressurize process terminates.
5. injection (mo(u)lding) machine according to any one of claims 1 to 4, wherein
The movable member is knock-pin, and the knock-pin is used to be filled in the described of the cavity space of the die device
The compression of moulding material and by the compression the molding molded product from both ejections of the die device,
The control device controls described 1 time decompression and 2 decompressions after the compression, before the ejection
System：1 decompression, the pressure of the molded product is reduced with prescribed model；2 decompressions, by depressurizing it at described 1 time
The knock-pin is set to retreat the pressure for further decreasing the molded product to specified position afterwards.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-043250 | 2017-03-07 | ||
| JP2017043250A JP6797723B2 (en) | 2017-03-07 | 2017-03-07 | Injection molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108568956A true CN108568956A (en) | 2018-09-25 |
| CN108568956B CN108568956B (en) | 2021-04-09 |
Family
ID=63576787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810187785.6A Active CN108568956B (en) | 2017-03-07 | 2018-03-07 | Injection molding machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6797723B2 (en) |
| CN (1) | CN108568956B (en) |
| TW (1) | TWI733004B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112873752A (en) * | 2019-11-29 | 2021-06-01 | 住友重机械工业株式会社 | Injection molding machine |
| CN115003433A (en) * | 2019-03-26 | 2022-09-02 | 高董瑾 | Material forming device and method |
| CN115195066A (en) * | 2021-04-02 | 2022-10-18 | 住友重机械工业株式会社 | Control device for injection molding machine, injection molding system, and control method for injection molding machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI674959B (en) * | 2018-11-30 | 2019-10-21 | 財團法人金屬工業研究發展中心 | Pressure and temperature sensing device in the mold |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012144042A (en) * | 2010-12-20 | 2012-08-02 | Japan Steel Works Ltd:The | Forming method of thin-walled molded product |
| CN103857516A (en) * | 2011-10-04 | 2014-06-11 | 东洋机械金属株式会社 | Method of controlling pressure-maintaining step for injection-molding machine |
| CN103895193A (en) * | 2012-12-25 | 2014-07-02 | 住友重机械工业株式会社 | Injection molding machine with an ejector unit |
| CN105538621A (en) * | 2014-10-22 | 2016-05-04 | 住友重机械工业株式会社 | Injection forming machine |
| CN105690693A (en) * | 2014-12-12 | 2016-06-22 | 发那科株式会社 | Ejection controller and ejection control method for injection molding machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI535550B (en) * | 2012-11-15 | 2016-06-01 | 寶鹼公司 | Method for injection molding at low, substantially constant pressure |
| JP5731577B2 (en) * | 2013-06-07 | 2015-06-10 | ファナック株式会社 | Control device for injection molding machine having cavity compression function |
-
2017
- 2017-03-07 JP JP2017043250A patent/JP6797723B2/en active Active
-
2018
- 2018-03-07 CN CN201810187785.6A patent/CN108568956B/en active Active
- 2018-03-07 TW TW107107546A patent/TWI733004B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012144042A (en) * | 2010-12-20 | 2012-08-02 | Japan Steel Works Ltd:The | Forming method of thin-walled molded product |
| CN103857516A (en) * | 2011-10-04 | 2014-06-11 | 东洋机械金属株式会社 | Method of controlling pressure-maintaining step for injection-molding machine |
| CN103895193A (en) * | 2012-12-25 | 2014-07-02 | 住友重机械工业株式会社 | Injection molding machine with an ejector unit |
| CN105538621A (en) * | 2014-10-22 | 2016-05-04 | 住友重机械工业株式会社 | Injection forming machine |
| CN105690693A (en) * | 2014-12-12 | 2016-06-22 | 发那科株式会社 | Ejection controller and ejection control method for injection molding machine |
Non-Patent Citations (1)
| Title |
|---|
| 张玉龙等: "《功能塑料制品配方设计与加工实例》", 31 January 2006, 国防工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115003433A (en) * | 2019-03-26 | 2022-09-02 | 高董瑾 | Material forming device and method |
| CN112873752A (en) * | 2019-11-29 | 2021-06-01 | 住友重机械工业株式会社 | Injection molding machine |
| CN115195066A (en) * | 2021-04-02 | 2022-10-18 | 住友重机械工业株式会社 | Control device for injection molding machine, injection molding system, and control method for injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108568956B (en) | 2021-04-09 |
| TWI733004B (en) | 2021-07-11 |
| JP6797723B2 (en) | 2020-12-09 |
| TW201832901A (en) | 2018-09-16 |
| JP2018144398A (en) | 2018-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108568956A (en) | Injection (mo(u)lding) machine | |
| CN110366483B (en) | Calibration device, injection molding system and calibration method | |
| CN103895193B (en) | Injection (mo(u)lding) machine | |
| CN108568953A (en) | Injection (mo(u)lding) machine | |
| CN108688102A (en) | Injection (mo(u)lding) machine | |
| CN108688109B (en) | Injection molding machine and information processing device for injection molding | |
| CN108688098A (en) | Molding machine screw rod | |
| CN108568933A (en) | Injection (mo(u)lding) machine | |
| US20070184140A1 (en) | Injection molding machine | |
| CN108790010A (en) | Injection (mo(u)lding) machine | |
| CN107225742A (en) | Injection (mo(u)lding) machine | |
| CN103358498B (en) | Injection (mo(u)lding) machine | |
| CN110234487A (en) | Injection (mo(u)lding) machine | |
| CN110352122B (en) | Injection molding machine and injection molding method | |
| CN110315694A (en) | Injection (mo(u)lding) machine | |
| CN105818317A (en) | Injection molding machine | |
| CN110315718B (en) | Data management device for injection molding and injection molding machine | |
| EP3778182A1 (en) | Mold system | |
| CN108688116A (en) | Injection device and reversal valve | |
| CN103358497A (en) | Injection moulding machine | |
| CN105666781B (en) | Injection (mo(u)lding) machine | |
| JP7315441B2 (en) | Injection molding machine | |
| CN106903854A (en) | Injection (mo(u)lding) machine | |
| US20240300154A1 (en) | Control device of injection molding machine, injection molding machine, method of controlling injection molding machine | |
| CN110315707A (en) | The knock-pin method of adjustment of injection (mo(u)lding) machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |