CN105538621B - Injection (mo(u)lding) machine - Google Patents

Injection (mo(u)lding) machine Download PDF

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Publication number
CN105538621B
CN105538621B CN201510639507.6A CN201510639507A CN105538621B CN 105538621 B CN105538621 B CN 105538621B CN 201510639507 A CN201510639507 A CN 201510639507A CN 105538621 B CN105538621 B CN 105538621B
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CN
China
Prior art keywords
compression
control
injection
moulding
die
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.)
Active
Application number
CN201510639507.6A
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Chinese (zh)
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CN105538621A (en
Inventor
山口毅秀
柴田达也
中村彻
雷磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Heavy Industries Ltd
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Sumitomo Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to JP2014215728A priority Critical patent/JP6367079B2/en
Priority to JP2014-215728 priority
Application filed by Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Publication of CN105538621A publication Critical patent/CN105538621A/en
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Publication of CN105538621B publication Critical patent/CN105538621B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/64Mould opening, closing or clamping devices
    • B29C45/66Mould opening, closing or clamping devices mechanical
    • B29C45/661Mould opening, closing or clamping devices mechanical using a toggle mechanism for mould clamping
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • B29C45/4005Ejector constructions; Ejector operating mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/64Mould opening, closing or clamping devices
    • B29C45/66Mould opening, closing or clamping devices mechanical
    • B29C45/661Mould opening, closing or clamping devices mechanical using a toggle mechanism for mould clamping
    • B29C2045/662Mould opening, closing or clamping devices mechanical using a toggle mechanism for mould clamping using toggles directly connected or linked to the fixed platen and indirectly to the movable platen
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76498Pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76655Location of control
    • B29C2945/76702Closure or clamping device
    • B29C2945/76709Closure or clamping device clamping or closing drive means

Abstract

The present invention provides a kind of injection (mo(u)lding) machine for the stay in grade that can make molded product.The injection (mo(u)lding) machine of the present invention has:The driving device of compression member, the moulding material in the compression member compression mould device;And controller, the driving device is controlled, the control of the driving device is controlled in position and switched between pressure control in the compression travel midway for compressing the moulding material in the die device by the controller.

Description

Injection (mo(u)lding) machine
Technical field
This application claims preferential based on Japanese patent application filed in 22 days October in 2014 the 2014-215728th Power.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
It is well known that there is a kind of injection of the driving device of the compression member with the moulding material in compression mould device Molding machine (such as referenced patent document 1).By making compression member compression forming material can get the molded product of thin-walled.
Patent document 1:Japanese Unexamined Patent Publication 2012-187769 bulletins
In the past, the quality deviation by molded product made of compression forming material is larger.
Invention content
The present invention is completed in view of the above subject, and main purpose is to provide a kind of quality that can make molded product Stable injection (mo(u)lding) machine.
In order to solve the above problems, according to an embodiment of the present invention, following injection (mo(u)lding) machine is provided, is had:Pressure The driving device of contracting component, the moulding material in the compression member compression mould device;And controller, control the driving dress It sets, the controller is in the compression travel midway for compressing the moulding material in the die device, by the control of the driving device System switches between position control and pressure control.
Invention effect
According to an embodiment of the present invention, a kind of injection (mo(u)lding) machine for the stay in grade that can make molded product is provided.
Description of the drawings
Fig. 1 is the figure for indicating the state when compression travel of the injection (mo(u)lding) machine of one embodiment of the present invention starts.
Fig. 2 be indicate one embodiment of the present invention injection (mo(u)lding) machine compression travel at the end of state figure.
Fig. 3 is the flow chart of the compression travel for the injection (mo(u)lding) machine for indicating one embodiment of the present invention.
In figure:30- die devices, 32- cover half, 33- dynamic models, 34- cavity spaces, 36- compression members, 40- injection devices, 42- moulding materials, 50- intermediate devices, 51- blocks, 60- liftout attachments, 61- eject motor, 61a- encoders, and 62- movements turn Converting mechanism, 63- knock-pins, 64- liftout plates, 65- position sensors, 66- pressure sensors, 70- controllers.
Specific implementation mode
Hereinafter, refer to the attached drawing illustrates mode for carrying out the present invention, in the drawings to identical or corresponding Structure marks identical or corresponding symbol, to omit the description.
Fig. 1 is the figure for indicating the state when compression travel of the injection (mo(u)lding) machine of one embodiment of the present invention starts.Fig. 2 The figure of the state at the end of compression travel to indicate the injection (mo(u)lding) machine of one embodiment of the present invention.Such as Fig. 1 and Fig. 2 institutes Show, injection (mo(u)lding) machine has frame Fr, mold closing mechanism 10, injection device 40, intermediate device 50, liftout attachment 60 and controller 70 Deng.
Mold closing mechanism 10 carries out mold closing, molding and the die sinking of die device 30.Die device 30 is by cover half 32 and dynamic model 33 It constitutes.Mold closing mechanism 10 has fixation clip 12, movable pressure plate 13, rear fender 15, connecting rod 16, toggle mechanism 20, molding horse Up to 21 and movement conversion mechanism 25.In illustrating below, the moving direction of the movable pressure plate 13 when by mold closing (is right in Fig. 1 and Fig. 2 Direction) be used as front, by the moving direction of the movable pressure plate 13 when molding (being left direction in Fig. 1 and Fig. 2) as rear come into Row explanation.
Fixation clip 12 is fixed on frame Fr.Cover half is installed on the face opposed with movable pressure plate 13 in fixation clip 12 32。
Movable pressure plate 13 is moved freely along the guiding piece (such as guide rail) 17 being layed on frame Fr, and relative to fixation Pressing plate 12 is free to advance or retreat.Dynamic model 33 is installed via intermediate device 50 on the face opposed with fixation clip 12 in movable pressure plate 13.
It the mold closing of die device 30 is carried out, molds and opens by making movable pressure plate 13 retreat relative to fixation clip 12 Mould.
Rear fender 15 links across interval and fixation clip 12, and movement is placed in frame freely on mould opening and closing direction On Fr.In addition, rear fender 15 can also be moved freely along the guiding piece being layed on frame Fr.The guiding piece of rear fender 15 is also It can be general with the guiding piece 17 of movable pressure plate 13.
In addition, in present embodiment, fixation clip 12 is fixed on frame Fr, and rear fender 15 is opened relative to frame Fr along mould It closes direction and moves freely and be fixed on frame Fr but it is also possible to be rear fender 15, fixation clip 12 is opened relative to frame Fr along mould Direction is closed to move freely.
Connecting rod 16 is across interval connection fixation clip 12 and rear fender 15.More connecting rods 16 can be used.Each connection Bar 16 is parallel with mould opening and closing direction, and is extended according to mold clamping force.It is equipped with molding force detector 18 at least 1 connecting rod 16. It can be strain gage type to mold force detector 18, and mold clamping force is detected by detecting the deformation of connecting rod 16.
In addition, molding force detector 18 is not limited to strain gage type, can also be piezoelectric type, condenser type, fluid pressure type, electricity Magnetic-type etc., and its installation site is also not limited to connecting rod 16.
Toggle mechanism 20 is configured between movable pressure plate 13 and rear fender 15.Toggle mechanism 20 is by crosshead 20a, Duo Gelian The compositions such as bar 20b, 20c.One of connecting rod 20b is rotatably installed on movable pressure plate 13, another connecting rod 20c is swung certainly Such as it is installed on rear fender 15.These connecting rods 20b, 20c is joined into capable of expansion and contraction by pin etc..By make crosshead 20a into It moves back, multiple connecting rod 20b, 20c stretch, and movable pressure plate 13 is thus made to retreat relative to rear fender 15.
Molding motor 21 is installed on rear fender 15, so that movable pressure plate 13 is retreated by making crosshead 20a retreat.It is molding It is equipped between motor 21 and crosshead 20a by the way that the rotary motion for molding motor 21 is converted into linear motion for delivery to cross The movement conversion mechanism 25 of head 20a.Movement conversion mechanism 25 is for example made of ball screw framework.
The action of mold closing mechanism 10 is controlled by controller 70.Controller 70 control mold closing process, molding process and Mold process etc..
In mold closing process, motor 21 is molded to make movable pressure plate 13 advance by driving, thus makes dynamic model 33 and cover half 32 Contact.It is equipped with compression member 36 in 33 side of dynamic model, cavity space 34 is formed between compression member 36 and cover half 32.Compression Component 36 is free to advance or retreat in die device 30.
It molds in process, mold clamping force is generated by further driving molding motor 21.When molding, injection device 40 is to type The moulding material 42 of 34 filling liquid of cavity space.Start that compression member 36 is made to move in die device 30 in the midway being filled It is dynamic, thus carry out the compression of moulding material 42.After filling work procedure, pressurize process and cooling process are carried out.In pressurize process, to Moulding material 42 in cavity space 34 applies pressure.In cooling process, the moulding material 42 in cavity space 34 it is cured and As molded product.
It molds in process, motor 21 is molded to make movable pressure plate 13 retreat by driving, thus makes dynamic model 33 and cover half 32 Separation.After molding process, liftout attachment 60 ejects molded product from die device 30.
Intermediate device 50 is disposed between dynamic model 33 and movable pressure plate 13.Intermediate device 50 is for example with block 51.Compression The rear end of component 36 is inserted in the inner space 51a of block 51.
Liftout attachment 60 ejects molded product after die sinking from die device 30.Liftout attachment 60 is for example with ejection motor 61, movement conversion mechanism 62, knock-pin 63.
Ejection motor 61 is installed on the rear surface of movable pressure plate 13.Ejecting motor 61 has encoder 61a.Encoder 61a The rotation angle of the output shaft of the ejection motor 61 is detected, and will indicate that the signal of the rotation angle is output to controller 70.
The rotary motion for ejecting motor 61 is converted into the linear motion of knock-pin 63 by movement conversion mechanism 62.Movement conversion Mechanism 62 by ball screw framework such as constituting.
Knock-pin 63 is free to advance or retreat in the through hole of movable pressure plate 13.Behind the front end of knock-pin 63 and liftout plate 64 End face contacts.
Liftout plate 64 is free to advance or retreat in the inner space 51a of block 51.The front end face of liftout plate 64 and compression member 36 Rear end contacts.
Motor 61 is ejected to make knock-pin 63 advance by driving, and compression member 36 is thus made to advance.Also, pass through driving Motor 61 is ejected to make knock-pin 63 retreat, thus retreats compression member 36.
Liftout attachment 60 plays the function of the driving device of compression member 36.Compression member 36 is both used for (1) compression mould Moulding material in device 30 is also used for (2) and ejects molded product from die device 30.
Controller 70 has CPU (Central Processing Unit) storage mediums such as 71 and memory 72.Controller 70 make CPU71 execute the program being stored in storage medium 72, thus control mold closing mechanism 10, injection device 40 and liftout attachment 60 etc..
The compression travel of moulding material 42 of the controller 70 in compression cavity space 34 is halfway by the control of liftout attachment 60 System switches between position control and pressure control.Both it can carry out controlling the switching controlled to pressure from position, also might be used To carry out controlling the switching controlled to position from pressure.
In the control of the position of liftout attachment 60, ejection motor 61 be controlled so as to make compression member 36 or with compression member 36 The position of the component moved together becomes setting position.The control can be any of feedback control or feedforward control.Also Setting position can continuously or intermittently be changed with time going by.For example may be used as the component moved together with compression member 36 Enumerate knock-pin 63, liftout plate 64.
It is detected by position sensor 65 position of compression member 36 or the component moved together with compression member 36.Position It sets sensor 65 to be installed on the component (such as being the block 51 of intermediate device 50 in Fig. 1 and Fig. 2) of affixed side, but can also pacify On component loaded on drawer at movable side.In addition, the encoder 61a of ejection motor 61 also can be used as position sensor 65.
On the other hand, it is to make in cavity space 34 by the ejection control of motor 61 in the control of the pressure of liftout attachment 60 The pressure of moulding material 42 becomes setting pressure.The control can be any of feedback control or feedforward control.It can also be with The process for the time continuously or intermittently changes setting pressure.
The pressure of moulding material 42 in cavity space 34 is detected by pressure sensor 66.Pressure sensor 66 is installed In on the component (such as in Fig. 1 and Fig. 2 be compression member 36) of drawer at movable side, but can also be installed on affixed side component (such as Cover half 32) on.Also, pressure sensor 66 can also by detect liftout attachment 60 component parts deformation or intermediate device 50 component parts deforms to detect the pressure of the moulding material 42 in cavity space 34.
According to the present embodiment, the switching of position control and pressure control is carried out in compression travel midway.Therefore, it is possible to reality The filling situation for granting the moulding material 42 in cavity space 34 controls accordingly, and can make the stay in grade of molded product.Pressure Indention journey is divided into multiple processes by the switching of position control and pressure control.
For example, at least one of the initial process and last process of controller 70 in multiple processes process into Line position sets control.
By the progress position control in initial process, compression member 36 can be made reliably to advance to setting position, And make the front surface extruded material 42 of compression member 36.In addition, when starting compression travel, the forming material in cavity space 34 The pressure transient of material 42.Make the stay in grade of molded product by carrying out position control in initial process.
By carrying out pressure control in the process of midway, moulding material 42 is made fully to press the wall in cavity space 34 Face, to improve replicability.Also, due to the pressure stability of moulding material 42, moulding material 42 it is density stabilized.
By carrying out position control in last process, the final size and shape of cavity space 34 becomes stable, at The size and shape of type product becomes stable.By making compression member 36 advance in last process so that in cavity space 34 Full of moulding material 42, terminate the filling of moulding material 42.Pressurize process and cooling process are carried out after filling work procedure.
After compression travel terminates, position control can also be continued in pressurize process and cooling process, to prevent The size of cavity space 34 changes.In the control of the position, compression member 36 is forbidden to move.Position control can also carry out Start to die sinking process.
As shown in figure 3, controller 70 carries out position control in initial process and last process the two processes, Pressure control can be carried out in the process between these processes.In addition, in Fig. 3, successively into line position in compression travel Control S11, pressure control S12 and position control S13 are set, but switching times and sequence are not particularly limited.For example, controller 70, which can not also control pressure S12, is switched to position control S13 and is terminated with pressure control S12.I.e. can also successively only into Line position sets control S11 and pressure control S12.Also, controller 70 can not also carry out position control S11 and be controlled from pressure S12 starts.Pressure control S12 and position control S13 can also be only carried out successively.As long as compression travel is by 2 or more works Sequence is constituted, such as can also be made of 4 or more processes.
More than, the embodiment etc. of injection (mo(u)lding) machine is illustrated, but the present invention is not limited to above-mentioned embodiment party Formula etc. in the range of spirit of the invention recorded in claim, can be subject to various modifications and improvement.
For example, in the above embodiment, compression member 36 had both been used for the moulding material in (1) compression mould device 30, Molded product is ejected from die device 30 for (2), but (1) compression can also be only used for, rather than (2) ejection.At this point, ejection It is independently disposed in die device 30 with component and compression member 36.
When ejection component is independently arranged with compression member 36, liftout attachment 60 can both play independent driving ejection portion The function of the driving device of part and compression member 36 can also play the function of the only driving device of driving ejection component. Under latter case, the driving device of driving compression member 36 is separately set.Such as the hydraulic cylinder as intermediate device 50 is used as driving The driving device of compression member 36.
The compression member 36 of the above embodiment is disposed in 33 side of dynamic model, but can also be disposed in 32 side of cover half.In at this point, Between device 50 can be disposed between cover half 32 and fixation clip 12.In addition, compression member 36 can also be separately equipped in dynamic model 33 and this both sides of cover half 32.
The midway for filling molding material 42 is carved at the beginning of the compression travel of the above embodiment, but there is no especially limits It is fixed, such as can both be carried out before starting filling, it can also be carried out while with filling is started.
The finish time of the compression travel of the above embodiment substantially with terminate moulding material 42 filling at the time of it is identical, But it is not particularly limited, such as both can be after end-of-fill, it can also be before end-of-fill.
The mold closing mechanism 10 of the above embodiment has molding motor 21 as driving source, but can also have hydraulic cylinder, To replace molding motor 21.Also, mold closing mechanism 10 can also have linear motor to be opened and closed for mould, have electromagnet for closing Mould.

Claims (4)

1. a kind of injection (mo(u)lding) machine, has:
Mold closing mechanism carries out mold closing, molding and the die sinking of die device;
The driving device of compression member, the moulding material in the compression member compression mould device;And
Controller controls the driving device,
The driving device is the liftout attachment for ejecting molded product from the die device,
When being molded by the mold closing mechanism, the controller is in the pressure for compressing the moulding material in the die device Indention journey midway, the control of the driving device is controlled in position and is switched between pressure control,
After the compression section terminates, the position control based on the liftout attachment proceeds to the mold closing mechanism Until die sinking process starts,
The compression travel controls the switching between pressure control by the position by is divided into multiple processes,
Institute's rheme is carried out in initial process of the controller in the multiple process and last process the two processes Set control.
2. injection (mo(u)lding) machine according to claim 1, wherein
The controller carries out the pressure control in the process between the initial process and the last process.
3. injection (mo(u)lding) machine according to claim 1, wherein
The compression member is used to eject molded product from the die device.
4. injection (mo(u)lding) machine according to claim 1, wherein
The compression travel for compressing the moulding material in the die device carries out in the filling work procedure of moulding material.
CN201510639507.6A 2014-10-22 2015-09-30 Injection (mo(u)lding) machine Active CN105538621B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2014215728A JP6367079B2 (en) 2014-10-22 2014-10-22 Injection molding machine
JP2014-215728 2014-10-22

Publications (2)

Publication Number Publication Date
CN105538621A CN105538621A (en) 2016-05-04
CN105538621B true CN105538621B (en) 2018-09-07

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JP6797723B2 (en) * 2017-03-07 2020-12-09 住友重機械工業株式会社 Injection molding machine
JP2019177535A (en) 2018-03-30 2019-10-17 住友重機械工業株式会社 Injection molding machine
CN110696315A (en) * 2019-09-24 2020-01-17 青岛海尔电冰箱有限公司 Method and device for generating injection molding ejection time

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TWI654067B (en) 2019-03-21
CN105538621A (en) 2016-05-04
JP6367079B2 (en) 2018-08-01
TW201615380A (en) 2016-05-01
JP2016083776A (en) 2016-05-19

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